Method for producing a battery or a battery module, battery or battery module, and motor vehicle comprising the battery or the battery module

Abstract

A method for producing a battery or a battery module, comprising the following steps: providing a battery housing or a battery module housing; providing a battery cell having a battery cell housing; introducing the battery cell into the battery housing or into the battery module housing; applying a first adhesive, in particular a first adhesive layer, to the battery cell housing in such a way that the first adhesive is connected, in particular integrally bonded, to the battery cell housing; applying an intermediate piece, in particular a small plate, to the first adhesive in such a way that the intermediate piece is connected, in particular integrally bonded, to the first adhesive; and applying a foam or a second adhesive, in particular a second adhesive layer, to the intermediate piece in such a way that the foam or the second adhesive is connected to the battery housing or the battery module housing, in particular to a side of a battery housing cover of the battery housing facing the battery cell housing or to a side of a battery module housing cover of the battery module housing facing the battery cell housing, and to the intermediate piece, in particular with an integral bond and / or form fit.

Description

[0001] METHOD FOR MANUFACTURING A BATTERY OR BATTERY MODULE, BATTERY OR BATTERY MODULE AND MOTOR VEHICLE WITH THE BATTERY OR BATTERY MODULE

[0002] The present invention relates to a method for manufacturing a battery or battery module, a battery or battery module and a motor vehicle with the battery or battery module.

[0003] Batteries or battery modules, for example for use in electric vehicles to supply an electric drive motor of the electric vehicle with electrical energy, have one or more battery cells, in particular cylindrical cells or prismatic cells, which are contained in a battery housing or battery module housing.

[0004] To minimize the risk of damage to individual battery cells, the cells are mounted in the battery housing or battery module housing in such a way that tipping over or any other change in position relative to the housing, or impact on the cells, for example as a result of acceleration, particularly in a vehicle accident, is largely prevented. This increases vehicle safety, as damage to even a single battery cell can negatively affect the performance and safety of the battery or battery module, for example, if a battery cell propagates, i.e.,A short circuit occurs, causing the cell to heat up and build up pressure. This pressure can lead to the cell bursting and a violent reaction among the cell components, potentially triggering a chain reaction in which neighboring cells also overheat. The goal is to prevent this, and if it cannot be avoided, to at least allow the occupants sufficient time to recognize the problem and safely exit the vehicle.

[0005] In cases where the batteries or battery modules are designed as load-bearing components of the vehicle, the batteries, in particular the battery housings, or the battery modules, in particular the battery module housings, must be able to withstand specified tensile forces, especially in the longitudinal direction of the battery cells, in order to largely prevent the battery or battery module from opening as a result of these tensile forces and to improve the vehicle's stability. This further enhances the vehicle's safety and improves its performance.

[0006] The battery cells, or a component thereof, in particular a housing cover, are usually mechanically connected to a battery housing cover or a battery module housing cover, for example by using foam or adhesive or by screwing, in order to prevent the battery cells from tipping over and the risk of damage to the battery cells.

[0007] Foams are preferred in the context of battery manufacturing in the mobility industry, with its associated technical requirements of propagation prevention, flame retardancy, lightweight construction, electrical and thermal insulation, and mechanical challenges, due to the lower weight of foams compared to solid materials.

[0008] The battery cells often have a nickel-plated housing because this material has high electrical conductivity and is extremely corrosion-resistant. However, in this case, the nickel-plated surface of the battery cell housing makes direct mechanical connection to load-introducing or load-transferring components of the vehicle via adhesive or foaming techniques costly or difficult, while mechanical connection via screws requires additional installation space, which is a disadvantage.

[0009] One object of the present invention is to improve a battery or battery module, particularly for use in a motor vehicle to supply an electric drive motor of the motor vehicle with electrical energy. This object is achieved by the features of the independent claims. Further preferred embodiments of the invention are the subject of the dependent claims.

[0010] According to a first aspect of the present invention, a method for manufacturing a battery or battery module comprises the following steps:

[0011] Providing a battery housing (of the battery) or a battery module housing (of the battery module);

[0012] Providing a battery cell with a battery cell housing;

[0013] Inserting the battery cell into the battery housing or inserting the battery cell into the battery module housing;

[0014] Applying a first adhesive, or in some embodiments a first adhesive layer, to the battery cell housing in such a way that the first adhesive is bonded to the battery cell housing, in some embodiments by a material bond;

[0015] Applying an intermediate piece, in some embodiments a plate, to the first adhesive in such a way that the intermediate piece is bonded to the first adhesive, in some embodiments by a material bond; and

[0016] Applying a foam or a second adhesive, in some embodiments a second layer of adhesive, to the intermediate piece in such a way that the foam or the second adhesive is bonded to the battery housing or the battery module housing, in some embodiments to a side of a battery housing cover of the battery housing facing the battery cell housing or to a side of a battery module housing cover of the battery module housing facing the battery cell housing, and to the intermediate piece, in some embodiments by a material bond and / or a form-fit bond.

[0017] This allows, in some designs, a connection—in some designs a mechanical connection—of the battery cell housing to the battery housing or battery module housing in a small installation space, and enables the transfer of high (tensile) forces between the battery cell housing and the battery housing or battery module housing, since the foam or the second adhesive is not directly bonded to the battery cell housing, but indirectly. Furthermore, in some designs, the manufacturing costs for the battery or battery module can be reduced, as only a small amount of the potentially expensive first adhesive is required, especially compared to when the connection of the battery cell housing to the battery housing or battery module housing is direct, i.e., solely via the first adhesive.

[0018] The battery or battery module can also contain several battery cells that are electrically connected to each other. Furthermore, the battery cell can be directly or indirectly mechanically connected to the base of the battery housing or the base of the battery module housing, for example, by gluing.

[0019] A battery cell, as used here, can have an electrically conductive housing with a housing part that is cylindrical in the case of a cylindrical cell or rectangular in the case of a prismatic cell, as well as a lid and a base that are fluid-tightly connected to the cylindrical or rectangular housing part. The housing contains an electrolyte and one or more electrode assemblies, each comprising an electrode (in some embodiments with an active material, for example, a cathode active material) and a current collector (for example, a cathode collector), and another electrode (in some embodiments with another active material, for example, an anode active material) and another current collector (for example, an anode collector), arranged in a layered configuration with a separator and another separator between them.the additional current collector is electrically connected to a (first) terminal or a further (second) terminal of the battery cell.

[0020] The intermediate piece, which can also be called an adhesion bridge spacer, can be in the form of a plate, especially if the second adhesive is applied to it. However, the intermediate piece can also be a component that provides a larger surface area than a plate, particularly if the foam is applied to it.

[0021] Preferably, one surface of the intermediate piece facing the battery cell is flat or substantially flat to enable good adhesion of the intermediate piece to the battery cell housing by means of the first adhesive.

[0022] In the case where the second adhesive is applied to the intermediate piece, a surface of the intermediate piece facing the battery housing or battery module housing is preferably flat or substantially flat to enable good bonding of the intermediate piece to the battery housing or battery module housing by means of the second adhesive.

[0023] The intermediate piece can have a more complex geometry, especially in the case where the foam is applied to the intermediate piece, since the foam is liquid in the injection and can therefore flow around an intermediate piece with a more complex geometry than the plate and accordingly introduce a load over a larger area, which the intermediate piece then transfers to the battery cell via the adhesive surface.

[0024] In addition to its function as an adhesive bridge, the intermediate piece, like many plastic components, can have other functionalities. For example, it can be used as a positioning aid for contact components or similar items.

[0025] The first and second adhesives, as well as the foam, each create a material-bonded connection between the respective components.

[0026] The foam allows for the creation of positive-locking connections between the respective components, depending on the geometries of the intermediate piece and / or the battery cell housing and / or the battery module housing, particularly through overmolding and / or back-foaming. When attaching an intermediate plate with a more complex geometry or larger surface area, a hook-and-loop fastener can be incorporated into the first or second adhesive and / or the foam. The first or second adhesive or the foam can generate the necessary strength through adhesion and cohesion, and the positive-locking connection is achieved through the geometric shape (the first or second adhesive or foam flows around the fibers / nubs of the hook-and-loop fastener).

[0027] Preferred embodiments of the invention and their further developments are described below, each of which, unless expressly excluded, can be combined arbitrarily with each other as well as with the second aspect of the invention and the third aspect of the invention described below.

[0028] In some versions, the provision of the battery cell with a battery cell housing involves the provision of a battery cell, in some versions a cylindrical cell or a prismatic cell, with a battery cell housing made of nickel-plated steel.

[0029] In some designs, this can improve the electrically conductive connection of the battery cell housing to the (electrically conductive) battery housing or the (electrically conductive) battery module housing.

[0030] In some versions, the application of the first adhesive to the battery cell casing involves the application of a two-component acrylate adhesive and / or a two-component methyl acrylate adhesive and / or a two-component methyl methacrylate adhesive. In some versions, the first adhesive may be an adhesive with the brand name EV Bond 420, manufactured by H.

[0031] B. Fuller Company, or an adhesive with the brand name AT 6060, manufactured by the HB Fuller Company.

[0032] In some designs, this can improve the mechanical bond between the battery cell casing and the first adhesive, as these (first) adhesives can form a strong mechanical bond with surfaces that are difficult to bond and contain nickel. In some designs, the application of the first adhesive to the battery cell casing involves applying a first layer of adhesive containing the first adhesive, with a thickness ranging from 0.1 mm to 0.3 mm.

[0033] In some designs, this can significantly reduce the manufacturing costs for the battery or battery module due to the small amount of initial adhesive required.

[0034] In some embodiments, the application of the spacer to the first adhesive involves the application of an spacer comprising acrylonitrile butadiene styrene copolymers and / or acrylonitrile styrene acrylate copolymers and / or styrene acrylonitrile copolymers. In some embodiments, the spacer may be manufactured using a product with the brand name ER400, manufactured by LG Chem Ltd.

[0035] In some designs, this can improve the mechanical connection of the intermediate piece to the first adhesive and / or the foam or the second adhesive.

[0036] In some versions, the application of the foam to the intermediate piece involves applying a foam based on epoxies or other plastics with elastic and structural properties to the intermediate piece.

[0037] In some versions, the application of the foam to the intermediate piece involves applying a two-component polyurethane foam. This foam can have a tensile strength greater than 3.5 MPa.

[0038] In some designs, this can improve the mechanical connection of the foam to the intermediate piece and / or the battery housing or the battery module housing.

[0039] In some designs, foams may be used which, if applied directly to the nickel-plated surface of the battery cell housing, would not have sufficient adhesion properties to the surface of the battery cell housing, so that only slight to no tensile forces could be transferred between the battery cell housing and the battery housing or the battery module housing.

[0040] The intermediate piece compensates for this weakness—namely, the insufficient adhesion of the foam to nickel—by providing better adhesion to the nickel-containing surface of the battery cell casing through the superior adhesion of the first adhesive, in some formulations of the two-component acrylate adhesive and / or the two-component methyl acrylate adhesive and / or the two-component methyl methacrylate adhesive. Accordingly, depending on the material combination, higher tensile forces, potentially corresponding to the maximum adhesive strength of the two-component acrylate adhesive and / or the two-component methyl acrylate adhesive and / or the two-component methyl methacrylate adhesive, can be transmitted. In some designs, the tensile force that can be transmitted between the battery cell housing and the battery housing or the battery module housing can be increased by a large surface area or by increasing the areas of the intermediate piece that are in contact with the foam.

[0041] In some embodiments, prior to the application of the first adhesive to the battery cell housing, a surface of the battery cell housing is cleaned by means of a plasma cleaning process and / or by means of a laser cleaning process and / or using isopropanol, wherein the first adhesive is applied to the cleaned surface of the battery cell housing, in some embodiments directly to the cleaned surface of the battery cell housing.

[0042] In some designs, this can further improve the mechanical bonding of the first adhesive to the battery cell housing.

[0043] In some embodiments, before applying the intermediate piece to the first adhesive, the surface of the first adhesive is cleaned using a laser cleaning process and / or isopropanol, with the intermediate piece then being applied to the cleaned surface of the first adhesive, or in some embodiments, directly to the cleaned surface of the first adhesive. This can further improve the mechanical bond between the intermediate piece and the first adhesive in some embodiments.

[0044] In some versions, before applying the foam or the second adhesive to the intermediate piece, a surface of the intermediate piece is cleaned by means of a laser cleaning process and / or using isopropanol, wherein the foam or the second adhesive is applied to the cleaned surface of the intermediate piece, in some versions directly to the cleaned surface of the intermediate piece.

[0045] In some designs, this can further improve the chemical and / or physical bond between the foam or the second adhesive and the intermediate piece.

[0046] In some embodiments, the battery cell housing has a lid on which a first terminal of the battery cell is provided, which extends at least section by section in a direction away from the battery cell housing, wherein a first section of an outer surface of the lid, which in some embodiments is exposed, forms a second terminal of the battery cell or is electrically connected to the second terminal of the battery cell, and the application of the first adhesive to the battery cell housing comprises the application of the first adhesive to a second section of the surface of the lid which does not include the first section of the surface of the lid.

[0047] In some embodiments, the application of the first adhesive involves applying a bead of adhesive containing the first adhesive to a subsection of the second section of the lid's surface and pressing the bead of adhesive to apply the first adhesive to the second section of the lid's surface.

[0048] In some designs, the foam or the second adhesive is applied to the intermediate piece in such a way that the foam or the second adhesive surrounds the first terminal pole section by section laterally, and optionally surrounds the second terminal pole section by section laterally, and in some designs is in contact with a lateral surface of the first terminal pole and / or a lateral surface of the second terminal pole.

[0049] In some versions, the height of the first terminal and, if applicable, the height of the second terminal (measured from the outer surface of the cover to a respective surface of the first or second terminal facing away from the outer surface of the cover) is less than the sum of the thicknesses of the first adhesive layer and the intermediate piece.

[0050] In some designs, this ensures that several of the battery cells in a battery or battery module can be electrically connected to each other via the respective first and second terminals, for example by means of a cell contacting system (CCS), (functionally) to the battery or battery module.

[0051] A second aspect of the present invention relates to a battery or battery module which is manufactured according to a method for manufacturing a battery or battery module described above and / or comprises: a battery housing or battery module housing; a battery cell with a battery cell housing which is inserted into the battery housing or battery module housing; a first adhesive, in some embodiments a first adhesive layer, which is applied to the battery cell housing and is bonded to the battery cell housing, in some embodiments by a material bond; an intermediate piece, in particular a plate, which is applied to the first adhesive and is bonded to the first adhesive, in some embodiments by a material bond;and a foam or a second adhesive, in some embodiments a second adhesive layer, which is applied to the intermediate piece and is connected to the battery housing or the battery module housing, in some embodiments to a side of a battery housing cover of the battery housing facing the battery cell housing or to a side of a battery module housing cover of the battery module housing facing the battery cell housing, and to the intermediate piece, in some embodiments by a material bond and / or a form-fit bond.

[0052] According to a third aspect of the present invention, a motor vehicle comprises a battery or battery module according to the second aspect and an electric drive motor, wherein the battery or battery module is configured to supply the electric drive motor with electrical energy and, optionally, the motor vehicle with electrical energy and / or thermal energy (waste heat).

[0053] The features and advantages described in relation to the first aspect of the invention and its advantageous embodiment also apply, at least where technically appropriate, to the second aspect of the invention and the third aspect of the invention and their advantageous embodiments, and vice versa.

[0054] Further advantageous developments result from the following description of preferred embodiments. This is shown, in part schematically:

[0055] Fig. 1 shows a battery module according to one embodiment,

[0056] Fig. 2 shows a battery according to one embodiment,

[0057] Fig. 3 shows an example of a battery cell for the battery module shown in Fig. 1 or the battery shown in Fig. 2.

[0058] Fig. 4 shows a motor vehicle with a battery or battery module according to one embodiment,

[0059] Fig. 5 is a flowchart illustrating a method for manufacturing a battery or battery module according to one embodiment; Fig. 6 is a top view of a cover of the example battery cell illustrated in Fig. 3 to illustrate a step of the method for manufacturing a battery or battery module according to one embodiment.

[0060] Fig. 7 shows a top view of the lid of the example battery cell illustrated in Fig. 3 to illustrate another step of the method for manufacturing a battery or battery module according to one embodiment, and

[0061] Fig. 8 shows a top view of an intermediate part of the battery or battery module according to one embodiment.

[0062] Fig. 1 schematically shows a battery module according to one embodiment, Fig. 2 schematically shows a battery according to one embodiment, and Fig. 3 shows an exemplary battery cell 10 for the battery module shown in Fig. 1 or the battery shown in Fig. 2, which is designed as a cylindrical cell. In other embodiments not shown, the battery cell 10 can also be designed as a prismatic cell.

[0063] With reference to Fig. 1, the battery module 100 comprises a battery module housing 110 and a battery cell 10, in some embodiments a cylindrical cell or a prismatic cell, with a battery cell housing 11 made of nickel-plated steel, which is inserted into the battery module housing 110.

[0064] With reference to Fig. 2, the battery 300 has a battery housing 310 and a battery cell 10, in some embodiments a cylindrical cell or a prismatic cell, with a battery cell housing 11 made of nickel-plated steel, which is inserted into the battery housing 310.

[0065] The battery cell 10 can, for example, be arranged on a base of the battery module housing 110 or on a base of the battery housing 310, and optionally be bonded to it, and (additionally) be secured against lateral slippage by appropriate (retaining) devices not shown. Although not shown in the figures, a battery module 100 of one embodiment can have several of the battery cells 10, which are inserted into the battery module housing 110 and electrically connected to one another.

[0066] Although not shown in the figures, a battery 300 of one version can have several of the battery cells 10 which are placed in the battery housing 310 and are electrically interconnected.

[0067] The battery cell housing 11 has a cover 13 on which a first terminal pole 12 of the battery cell 10 is provided, which extends at least sectionally parallel to or along a longitudinal axis of the battery cell 10 in a direction away from the battery cell housing 11.

[0068] A first section of an exposed outer surface 14 of the lid 13 forms a second terminal 15 of the battery cell 10 or is electrically connected to the second terminal 15 of the battery cell 10.

[0069] The battery module 100 and the battery 300 each further comprise a first adhesive 20, or in some embodiments a first adhesive layer 20, which is applied to the battery cell housing 11 and bonded to the battery cell housing 11, in some embodiments by a material bond. The first adhesive 20 can, for example, be a two-component acrylate adhesive and / or a two-component methyl acrylate adhesive and / or a two-component methyl methacrylate adhesive, wherein the thickness of the first adhesive layer can be in the range of 0.1 mm to 0.3 mm.

[0070] In this case, the first adhesive 20 can be applied to a second section of the surface 14 of the lid 13 that does not contain the first section of the surface of the lid 13.

[0071] The battery module 100 and the battery each further comprise an intermediate piece 30, in some embodiments a plate, which is applied to the first adhesive 20 and bonded to the first adhesive 20, in some embodiments by a material bond. The intermediate piece 30 can, for example, comprise acrylonitrile-butadiene-styrene copolymers and / or acrylonitrile-styrene-acrylate copolymers and / or styrene-acrylonitrile copolymers.

[0072] The battery module 100 further comprises a foam 40 or a second adhesive 41, which is applied to the intermediate piece 30 and is connected to the battery module housing 110, in some embodiments to a side of a battery module housing cover 111 of the battery module housing 110 facing the battery cell housing 11, and to the intermediate piece 30, in some embodiments in a material-bonded and / or form-bonded manner.

[0073] The battery 300 further comprises a foam 40 or a second adhesive 41, which is applied to the intermediate piece 30 and is connected to the battery housing 310, in some embodiments to a side of a battery housing cover 311 of the battery housing 310 facing the battery cell housing 11, and to the intermediate piece 30, in some embodiments in a material-bonded and / or form-bonded manner.

[0074] The foam could, for example, be a 2-component PU foam.

[0075] In this case, the foam 40 or the second adhesive 41 can be applied to the intermediate piece 30 in such a way that the foam 40 or the second adhesive 41 surrounds the first terminal pole 12 laterally in sections, and optionally surrounds the second terminal pole 15 laterally in sections, and in some embodiments is in contact with a lateral surface 16 of the first terminal pole 12 and / or a lateral surface of the second terminal pole 15.

[0076] In some embodiments, the height of the first terminal pole 12 and, if applicable, the height of the second terminal pole 15 (measured from the outer surface 14 of the cover 13 to a respective surface of the first or second terminal pole 12, 15 facing away from the outer surface 14 of the cover 13) is less than the sum of the thicknesses of the first adhesive layer 20 and the intermediate piece 30.

[0077] Fig. 4 shows a motor vehicle 200 with a battery module 100 or a battery 300 according to one embodiment and an electric drive motor 201. Here, the battery module 100 or the battery 300 is configured to supply the electric drive motor 201 with electrical energy and, optionally, the motor vehicle 200 with electrical energy and / or thermal energy.

[0078] Fig. 5 shows a flowchart illustrating a method for manufacturing a battery 300 or a battery module 100 according to one embodiment; Fig. 6 shows a top view of a lid of the example battery cell illustrated in Fig. 3 to illustrate one step of the method for manufacturing a battery 300 or a battery module 100 according to one embodiment; Fig. 7 shows a top view of the lid of the example battery cell illustrated in Fig. 3 to illustrate another step of the method for manufacturing a battery 300 or a battery module 100 according to one embodiment; and Fig. 8 shows a top view of an intermediate piece of the battery 300 or the battery module 100 according to one embodiment.

[0079] In step S10 of the procedure, a battery housing 310,311 or a battery module housing 110, 111 is provided.

[0080] In step S20 of the process, a battery cell 10 with a battery cell housing 11 is provided. The provision of the battery cell 10 can involve providing a battery cell 10, in some versions a cylindrical cell or a prismatic cell, with a battery cell housing 11 made of nickel-plated steel.

[0081] In step S30 of the process, the battery cell 10 is inserted into the battery housing 310, 311 or the battery cell 10 is inserted into the battery module housing 110, 111. The battery cell 10 can be connected to a base of the battery housing 110 or the battery module housing 310, for example by gluing.

[0082] In step S40 of the process, a first adhesive 20, or in some embodiments a first adhesive layer 20, is applied to the battery cell housing 11 such that the first adhesive 20 is bonded to the battery cell housing 11, in some embodiments by a material bond. The application of the first adhesive 20 to the battery cell housing 11 can involve the application of a two-component acrylate adhesive and / or a two-component methyl acrylate adhesive and / or a two-component methyl methacrylate adhesive. Furthermore, the application of the first adhesive 20 to the battery cell housing 11 can involve the application of a first adhesive layer 20 containing the first adhesive 20, with a thickness in the range of 0.1 mm to 0.3 mm.

[0083] In step S50 of the process, an intermediate piece 30, in some embodiments a plate, is applied to the first adhesive 20 such that the intermediate piece 30 is bonded to the first adhesive 20, in some embodiments by a material bond. The application of the intermediate piece 30 to the first adhesive 20 may involve the application of an intermediate piece 30 which comprises acrylonitrile-butadiene-styrene copolymers and / or acrylonitrile-styrene-acrylate copolymers and / or styrene-acrylonitrile copolymers.

[0084] In step S60 of the process, a foam 40 or a second adhesive 41, in some embodiments a second adhesive layer 41, is applied to the intermediate piece 30 such that the foam 40 or the second adhesive 41 is bonded to the battery housing 310, 311 or the battery module housing 110, 111, in some embodiments to a side of a battery housing cover 311 of the battery housing 310 facing the battery cell housing 11 or to a side of a battery module housing cover 111 of the battery module housing 110 facing the battery cell housing 11, and to the intermediate piece 30, in some embodiments in a material-bonded and / or form-fit manner. The application of the foam 40 to the intermediate piece 30 may involve the application of a two-component polyurethane foam to the intermediate piece 30.

[0085] In some embodiments of the method, prior to step S40, i.e., prior to the application of the first adhesive 20 to the battery cell housing 11, a surface of the battery cell housing 11 can be cleaned by a plasma cleaning process and / or by a laser cleaning process and / or using isopropanol, wherein the first adhesive 20 is then applied, i.e., after the cleaning, to the cleaned surface of the battery cell housing 11, in some embodiments directly to the cleaned surface of the battery cell housing 11. In some embodiments of the method, prior to step S50, i.e., prior to the application of the intermediate piece 30 to the first adhesive 20, a surface of the first adhesive 20 can be cleaned by a laser cleaning process and / or using isopropanol, wherein the intermediate piece 30 is then applied, i.e.,after cleaning, it is applied to the cleaned surface of the first adhesive 20, in some versions directly to the cleaned surface of the first adhesive 20.

[0086] In some embodiments of the process, prior to step S60, i.e., prior to the application of the foam 40 or the second adhesive 41 to the intermediate 30, a surface of the intermediate 30 can be cleaned by means of a laser cleaning process and / or using isopropanol, wherein the foam 40 or the second adhesive 41 is applied to the cleaned surface of the intermediate 30, in some embodiments directly to the cleaned surface of the intermediate 30.

[0087] In some embodiments of the method, the battery cell housing 11 may have a lid 13 on which a first terminal 12 of the battery cell 10 is provided, which extends at least section by section in the direction away from the battery cell housing 11, wherein a first section of an outer surface 14 of the lid 13, which in some embodiments is exposed, forms a second terminal 15 of the battery cell 10 or is electrically conductively connected to the second terminal 15 of the battery cell 10, and the application of the first adhesive 20 to the battery cell housing 11 comprises the application of the first adhesive 20 to a second section of the surface 14 of the lid 13 which does not contain the first section of the surface of the lid 13 (and the first terminal 12).

[0088] In particular with reference to Figures 6 and 7, the application of the first adhesive 20 can comprise applying a bead of adhesive 21 containing the first adhesive 20 to a partial section of the second section of the surface 14 of the cover 13 and pressing the bead of adhesive 21 to apply the first adhesive 20 to the second section of the surface of the cover 13. Furthermore, the foam 40 or the second adhesive 41 can be applied to the intermediate piece 30 such that the foam 40 or the second adhesive 41 laterally surrounds the first terminal 12 section by section, and optionally laterally surrounds the second terminal 15 section by section, and in some embodiments is in contact with a lateral surface 16 of the first terminal 12 and / or a lateral surface of the second terminal 15.

[0089] With reference to Fig. 8, in step S50 of the method an intermediate piece 30 with a recess 31 can be applied, wherein the recess 31 is adapted to the shape and position of the first terminal pole 12 and the second terminal pole 15 such that sections of the intermediate piece 30 adjacent to the recess 31 laterally surround the first terminal pole 12 and the second terminal pole 15.

Claims

REQUIREMENTS 1. Method for manufacturing a battery (300) or a battery module (100), comprising the following steps: Providing a battery enclosure (310) or a battery module enclosure (110); Providing a battery cell (10) with a battery cell housing (11); Inserting the battery cell (10) into the battery housing (310) or inserting the battery cell (10) into the battery module housing (110); Applying a first adhesive (20), in particular a first adhesive layer (20), to the battery cell housing (11) such that the first adhesive (20) is bonded to the battery cell housing (11), in particular by a material bond; Applying an intermediate piece (30), in particular a plate, to the first adhesive (20) such that the intermediate piece (30) is bonded to the first adhesive (20), in particular by a material bond; and Applying a foam (40) or a second adhesive (41), in particular a second adhesive layer (41), to the intermediate piece (30) such that the foam (40) or the second adhesive (41) is connected to the battery housing (310, 311) or the battery module housing (110, 111), in particular to a side of a battery housing cover (311) of the battery housing (310) facing the battery cell housing (11) or to a side of a battery module housing cover (111) of the battery module housing (110) facing the battery cell housing (11), and to the intermediate piece (30), in particular by a material bond and / or a form-fit bond.

2. Method according to claim 1, wherein the provision of the battery cell (10) with a battery cell housing (11) comprises the provision of a battery cell (10), in particular a cylindrical cell or a prismatic cell, with a battery cell housing (11) comprising nickel-plated steel.

3. Method according to one of the preceding claims, wherein the application of the first adhesive (20) to the battery cell housing (11) comprises the application of a 2-component acrylate adhesive and / or a 2-component methyl acrylate adhesive and / or a 2-component methyl methacrylate adhesive.

4. Method according to one of the preceding claims, wherein the application of the first adhesive (20) to the battery cell housing (11) comprises the application of a first adhesive layer (20) containing the first adhesive (20) with a thickness in the range of 0.1 mm to 0.3 mm.

5. Method according to any of the preceding claims, wherein the application of the intermediate (30) to the first adhesive (20) comprises the application of an intermediate (30) comprising acrylonitrile butadiene styrene copolymers and / or acrylonitrile styrene acrylate copolymers and / or styrene acrylonitrile copolymers.

6. Method according to one of the preceding claims, wherein the application of the foam (40) to the intermediate piece (30) comprises the application of a 2-component PU foam to the intermediate piece (30).

7. Method according to one of the preceding claims, wherein, prior to applying the first adhesive (20) to the battery cell housing (11), a surface of the battery cell housing (11) is cleaned by means of a plasma cleaning process and / or by means of a laser cleaning process and / or using isopropanol, and the first adhesive (20) is applied to the cleaned surface of the battery cell housing (11), in particular directly to the cleaned surface of the battery cell housing (11).

8. Method according to one of the preceding claims, wherein, prior to applying the intermediate piece (30) to the first adhesive (20), a surface of the first adhesive (20) is cleaned by means of a laser cleaning process and / or using isopropanol, and the intermediate piece (30) is applied to the cleaned surface of the first adhesive (20), in particular directly to the cleaned surface of the first adhesive (20).

9. Method according to one of the preceding claims, wherein, prior to the application of the foam (40) or the second adhesive (41) to the intermediate (30), a surface of the intermediate (30) is cleaned by means of a laser cleaning process and / or using isopropanol, and the foam (40) or the second adhesive (41) is applied to the cleaned surface of the intermediate (30), in particular directly to the cleaned surface of the intermediate (30).

10. Method according to one of the preceding claims, wherein the battery cell housing (11) has a cover (13) to which a first terminal pole is attached. (12) of the battery cell (10) is provided, which extends at least section by section in the direction away from the battery cell housing (11), a first section of a, in particular exposed, outer surface (14) of the cover (13) forms a second terminal (15) of the battery cell (10) or is electrically connected to the second terminal (15) of the battery cell (10), and the application of the first adhesive (20) to the battery cell housing (11) is an application of the first adhesive (20) to a second section of the surface (14) of the cover that does not include the first section of the surface of the cover (13). (13) exhibits.

11. Method according to the preceding claim, wherein the application of the first adhesive (20) comprises applying a bead of adhesive (21) containing the first adhesive (20) to a partial section of the second section of the surface (14) of the lid (13) and pressing the bead of adhesive (21) to apply the first adhesive (20) to the second section of the surface of the lid (13).

12. Method according to claim 10 or 11, wherein the foam (40) or the second adhesive (41) is applied to the intermediate piece (30) such that the foam (40) or the second adhesive (41) surrounds the first terminal pole (12) laterally in sections, and optionally surrounds the second terminal pole (15) laterally in sections, and is in particular in contact with a lateral surface (16) of the first terminal pole (12) and / or a lateral surface of the second terminal pole (15).

13. Battery (300) or battery module (100), manufactured according to a method according to one of the preceding claims and / or comprising: a battery housing (310, 311) or a battery module housing (110, 111); a battery cell (10) with a battery cell housing (11) which is inserted into the battery housing (310, 311) or into the battery module housing (110, 110); a first adhesive (20), in particular a first adhesive layer (20), which is applied to the battery cell housing (11) and is bonded to the battery cell housing (11), in particular by a material bond; an intermediate piece (30), in particular a plate, which is applied to the first adhesive (20) and is bonded to the first adhesive (20), in particular by a material bond;and a foam (40) or a second adhesive (41) which is applied to the intermediate piece (30) and is connected to the battery housing (310, 311) or the battery module housing (110, 111), in particular to a side of a battery housing cover (311) of the battery housing (310, 311) facing the battery cell housing (11) or to a side of a battery module housing cover (111) of the battery module housing (110, 111) facing the battery cell housing (11), and to the intermediate piece (30), in particular by a material bond and / or a form-fit bond.

14. Motor vehicle (200) comprising a battery (300) or a battery module (100) according to claim 13 and an electric drive motor (201), wherein the battery or battery module (100) is configured to supply the electric drive motor (201) with electrical energy and, optionally, the motor vehicle (200) with electrical energy and / or thermal energy.

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