Method for manufacturing a power battery for a motor vehicle and corresponding manufacturing device

Abstract

The invention relates to a method for manufacturing a power battery (2) for a motor vehicle, wherein a battery housing (3) of the power battery (2) has a receiving chamber (4) for receiving a cell module (5). It is provided that during the manufacturing of the power battery (2), a heat conductor (13) located between the cell module (5) and a wall (6) of the battery housing (3) which delimits the receiving chamber (4) is vibrated at least temporarily. The invention also relates to a manufacturing device (1) for manufacturing a power battery (2) for a motor vehicle.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a power battery for a motor vehicle, wherein a battery housing of the power battery has a receiving chamber for receiving a single cell module. The present invention also relates to a manufacturing device for manufacturing a power battery for a motor vehicle. Background Art

[0002] The prior art discloses, for example, document DE 10 2017 128 529 A1. It describes a motor vehicle battery, i.e., a motor vehicle power battery, having: a battery housing having a housing interior space partially bounded by a housing frame and a housing bottom plate; a plurality of battery modules arranged in the housing interior space; and at least one first cooling channel formed in the housing bottom plate region for cooling the battery module from a first side. The housing interior space is bounded by a housing top or a housing cover opposite the housing bottom plate, wherein at least one second cooling channel is provided in the region of the housing top or the housing cover for cooling the battery module from a second side.

[0003] Furthermore, document DE 103 20 186 A1 discloses a thermally conductive paste for thermally coupling a power semiconductor component to a cooling body. Here, the thermally conductive paste comprises a base material and at least one filler. The individual components have the following properties: the dynamic viscosity of the base material is between 25 mPa / s and 500 mPa / s; at least one filler is composed of metal particles with a particle size of less than 20 μm; the thermally conductive paste has a filler filling degree between 20% and 70%. This results in a thermally conductive paste with a resistivity of less than 100 Ωm and a thermal resistance of 3.4 W / (K·m).

[0004] Furthermore, the documents EP 3 584 876 A1 and US 2017 / 0241507 A1 are known from the prior art. Summary of the invention

[0005] The object of the present invention is to provide a method for producing a traction battery for a motor vehicle which has advantages over known methods and in particular allows rapid and process-reliable assembly of the cell modules in the receiving chamber.

[0006] This object is achieved according to the invention by a method for producing a motor vehicle traction battery having the features of claim 1. It is provided that during the production of the traction battery, a heat conducting medium between the cell modules and a wall of the battery housing delimiting the receiving chamber is vibrated at least temporarily / briefly.

[0007] The method is used to produce a traction battery which is preferably installed as a component of a motor vehicle, but can also be separated from the motor vehicle. The traction battery is used to temporarily store electrical energy, which is used in particular for operating a drive unit or a power unit of a motor vehicle and is therefore ultimately used to drive the motor vehicle. The electrical energy stored in the traction battery is used to provide a drive torque for driving the motor vehicle by means of the drive unit or the power unit.

[0008] The power battery has a battery housing and at least one single cell module. The single cell module is used to temporarily store electrical energy. For this purpose, it has at least one battery cell, preferably a plurality of battery cells electrically connected to each other. A receiving chamber is designed in the battery housing, which is arranged and designed to receive the single cell module. During the manufacturing process of the power battery, the single cell module is loaded into the receiving chamber. Preferably, not only one single cell module is arranged in the battery housing, but a plurality of single cell modules are loaded into the battery housing.

[0009] In this embodiment, the battery housing has a receiving chamber for receiving a plurality of single cell modules. When manufacturing the battery, it is preferred not only to arrange one or more single cell modules in one or more receiving chambers, but also to electrically connect one or more single cell modules. The receiving chamber is at least partially bounded by the wall of the battery housing. The wall is, for example, the bottom plate of the battery housing or the side wall of the battery housing. Preferably, the receiving chamber is surrounded by a plurality of walls, wherein one of the walls is, for example, configured as a bottom plate and the other walls are configured as side walls. Particularly preferably, the battery housing also has a bottom plate and a plurality of side walls extending from the bottom plate.

[0010] The side walls preferably surround the receiving chamber continuously and completely when viewed in cross section. The side walls thus enclose the receiving chamber between one another. The side walls each extend from the base plate and in a direction opposite to the base plate. Two of the side walls preferably directly adjoin one another. If a wall is mentioned within the scope of this description, this is preferably the base plate, unless otherwise specified. Alternatively, however, it is of course also conceivable to use one of the side walls as the wall.

[0011] As an alternative to the embodiment of the battery housing with a receiving chamber in which exactly one or more cell modules are arranged, the battery housing can have a plurality of receiving chambers, for example as many receiving chambers as cell modules, wherein each of the receiving chambers is respectively bounded by a wall of the battery housing, in particular a floor of the battery housing. It can be provided that the receiving chambers are separated from one another by partitions of the battery housing. That is, one of the partitions of the battery housing is provided between every two of the receiving chambers. In principle, reference is made to the above description with regard to this embodiment.

[0012] It can be provided that supporting surfaces are formed on the walls, in particular the side walls, which are used to support or fasten the cell modules according to the arrangement of the cell modules in the receiving chamber. For example, the supporting surfaces are arranged in such a way that the cell modules are spaced apart from the walls, in particular the base plate, of the battery housing while being supported on the supporting surfaces according to the arrangement of the cell modules in the receiving chamber. In this way, tolerances in the dimensions of the cell modules and the battery housing can be compensated. It can be provided that the cell modules are directly supported on the supporting surfaces. However, it can also be provided that a tolerance compensation element is arranged between the cell modules and the supporting surfaces, by which manufacturing tolerances of the cell modules and / or the battery housing can be compensated.

[0013] The support surface, if present, is located, for example, on a fastening element which projects from at least one or more walls of the battery housing. The fastening element is preferably connected to the one or more walls in a materially locked manner, for example, adhesively bonded or welded thereto. The cell module can have a counterpart support surface opposite thereto, which, depending on the arrangement of the cell module in the receiving chamber, rests on the support surface, in particular flatly or in a planar manner, so that the cell module is supported in the receiving chamber at a distance from the wall, in particular the base plate. The cell module in this respect does not contact or only partially contacts the wall or base plate.

[0014] During the operation of the power battery, in particular during the charging or discharging of the power battery, heat is generated at or in the cell module, and the heat must be discharged at least temporarily to prevent the cell module from overheating. For this purpose, the battery housing is preferably cooled passively or actively. Within the scope of passive cooling, at least one cooling body is arranged on the battery housing or the battery housing itself is locally configured as a cooling body. Within the scope of active cooling, it can be provided that the battery housing has at least one coolant channel, which is at least temporarily flowed by a coolant during the operation of the power battery.

[0015] In order to effectively cool the cell module, it is necessary to establish a thermal connection between the cell module and the battery housing. For this purpose, during the manufacture of the power battery, a heat conductor is introduced into the receiving chamber, that is, applied to the wall, in particular the bottom plate. After the cell module is installed in the receiving chamber, the heat conductor is therefore attached to the cell module on the one hand and to the battery housing on the other hand, and thermally connects them to each other.

[0016] It can be provided that the cell modules are inserted into the receiving chamber in such a way that the cell modules are either directly supported on the support surface or only indirectly supported on the support surface, for example via tolerance compensation elements. The insertion is carried out in such a way that the cell modules do not touch the wall or the base plate or only touch it partially. In any case, the heat conductor is at least partially or continuously present between the wall of the battery housing and the cell module, so that the cell module is mostly indirectly connected to the wall, that is, via the heat conductor.

[0017] In other words, when the cell module is inserted into the battery housing, an intermediate space is formed which is at least partially filled with a heat conductor and is bounded on the one hand by the wall of the battery housing and on the other hand by the cell module. It can be provided that the intermediate space away from the wall and the cell module is at least partially closed by means of a sealing element in order to prevent the heat conductor from escaping from the intermediate space. However, this sealing element is purely optional.

[0018] As a heat conductor, for example, a multi-component heat conductor is used, which in this respect comprises at least a first component and a second component. Here, for example, the first component is a carrier material and the second component is a filler, wherein the thermal conductivity of the heat conductor is mainly achieved by means of the filler. For this purpose, the filler preferably has a higher thermal conductivity than the carrier material.

[0019] The heat conducting agent is, for example, in liquid or paste form. The latter is to be understood as a solid-liquid mixture, wherein, for example, the first component is in liquid form and the second component is in solid form. The second component preferably contains metal particles or consists of metal particles. The proportion of the second component in the heat conducting agent is particularly preferably at least 50%, at least 60%, at least 70% or at least 80%, that is to say, in particular between 50% and 80% - including these values. As a result, particularly good heat conduction is achieved with the heat conducting agent.

[0020] For example, when manufacturing a power battery, it is provided that a heat conductor is first applied to a wall, in particular a bottom plate, which delimits a receiving chamber. Then, a cell module is installed in the receiving chamber using a mounting device, wherein the cell module is pressed onto the heat conductor or pressed into the heat conductor. The cell module is pressed onto the heat conductor by a pressing force acting on the mounting device or exerted on the cell module by the mounting device.

[0021] The amount of heat-conducting agent to be applied to the wall is determined based on the distance between the wall and the cell module and based on the area of ​​the wall. This distance is usually determined based on the maximum gap between the cell module and the wall, which is determined with the aid of a tolerance chain analysis. One goal here is to achieve sufficient and process-reliable wetting of the thermally active surfaces or reliable filling of the gaps after the cell module has been installed and fastened in the receiving chamber.

[0022] Alternatively, it can be provided that the cell module is first installed in the receiving chamber so that there is an intermediate space between the cell module and the wall. Then, that is to say, after the cell module has been installed in the receiving chamber, a heat conductor is introduced into the intermediate space. For example, the cell module is arranged in the receiving chamber at least partially spaced apart from the wall while forming an intermediate space. This is done in particular in the following way: the cell module is supported directly or indirectly on a supporting surface. The cell module is preferably fastened to the battery housing, in particular to the supporting surface. The heat conductor is then introduced into the intermediate space.

[0023] Due to the usual consistency or viscosity of the thermal conductor, the cell module must be pressed onto the thermal conductor or pressed into the thermal conductor with a certain pressing force or the thermal conductor must be introduced into the intermediate space with a certain introduction pressure. The pressing force must be high so that the distance between the cell module and the wall is as small as possible. Alternatively, the introduction pressure must be high so that the intermediate space between the cell module and the wall is reliably filled with thermal conductor. In order to prevent damage to the battery housing and the cell module, complex equipment and / or procedures are therefore usually required.

[0024] In order to be able to manufacture the power battery as simply as possible and still process reliably, it is therefore provided according to the invention that during the production of the power battery, the heat conducting medium is intentionally caused to vibrate at least temporarily. In particular, the heat conducting medium should be caused to vibrate when the cell modules are inserted into the receiving chamber or pressed onto or into the heat conducting medium, or - alternatively - when the heat conducting medium is introduced into the intermediate space.

[0025] In particular, the heat conductor should be vibrated in such a way that when the cell module is installed in the receiving chamber or the heat conductor is introduced into the intermediate space, the rheological stress of the heat conductor is reduced, thereby correspondingly also reducing the reaction force caused by the heat conductor and acting against the pressing force or the introduction pressure. Thus, by vibrating the heat conductor, the installation of the cell module in the receiving chamber or the introduction of the heat conductor into the intermediate space is simplified in a manner that the rheological stress of the heat conductor is reduced.

[0026] Making the heat conductor vibrate is in particular equivalent to a trembling relaxation of the heat conductor, which can also be called a "vibration". Accordingly, due to the pressing of the single module onto the heat conductor or due to the introduction of the heat conductor, the distribution of the heat conductor in the intermediate space is significantly simplified, in particular the necessary pressing force or the necessary introduction pressure is reduced. For example, the vibration is caused by a corresponding actuator, which acts directly or indirectly on the heat conductor. In the first case, the actuator is designed as an internal vibrator, for example, in the latter case, the actuator acts on the heat conductor, in particular through the wall and / or the single module. As a result, the production of the power battery can be completed at a lower cost than usual, but still with high process reliability.

[0027] A refinement of the invention provides that the heat conductor is first applied to the wall and then the cell modules are installed in the receiving chamber, wherein the cell modules are pressed against the vibrating heat conductor. As already explained, the heat conductor is first applied to the wall. The cell modules are then installed in the receiving chamber and pressed against the heat conductor, i.e. a pressing force is applied. While the cell modules are pressed against the heat conductor, the heat conductor is vibrated, in particular so that the rheological stress of the heat conductor is reduced during the pressing process. The process of installing the cell modules in the receiving chamber is thus significantly simplified in the manner described.

[0028] A refinement of the invention provides that the battery housing is arranged on a supporting element of the bracket supporting the wall, and then the cell module is pressed against the heat conductor by means of the mounting device when it is inserted into the receiving chamber. The bracket serves to support the wall during the insertion of the cell module into the receiving chamber. For example, it is provided that the battery housing is first arranged on the bracket or on at least one supporting element of the bracket so that the wall of the battery housing, in particular the bottom plate of the battery, is supported thereon. The bracket or the supporting element of the bracket supports the wall on the side facing away from the mounting device or the cell module. In other words, the supporting element is arranged on the side of the wall facing away from the cell module and the mounting device and rests against the wall there.

[0029] The thermal conductor is then applied to the wall, and the cell module is then again inserted into the receiving chamber and pressed onto the thermal conductor. The use of a bracket or a supporting element prevents excessive deformation of the wall and accordingly ensures that the battery housing is not damaged during the insertion of the cell module into the receiving chamber. Alternatively, a bracket or a supporting element can be used to support the wall even when the thermal conductor is introduced into the intermediate space.

[0030] One refinement of the invention provides that the heat conducting medium is vibrated by means of a bracket and / or a mounting device. The bracket or mounting device has a corresponding design or has suitable means for vibrating the heat conducting medium. The advantage of using a bracket or mounting device to vibrate the heat conducting medium is that no additional equipment is required for this purpose.

[0031] A refinement of the invention provides that the bracket and / or the mounting device has at least one vibration drive, in particular at least one linear vibrator. A vibration drive, which can also be referred to as an actuator, is understood to be a vibration generator, which is used to put the heat conductor into a vibrating state. The vibration drive can be operated, for example, electrically, pneumatically or hydraulically. The vibration drive has, for example, an eccentric wheel to generate vibrations. However, the vibration drive is particularly preferably in the form of a linear vibrator, which, for example, causes vibrations only in one direction or in the direction of the axis.

[0032] The linear vibrator is, for example, a magnetic linear vibrator and therefore has at least one excitation coil and a permanent magnet. The vibration drive is operated, for example, such that the vibration has a frequency of at least 100 Hz, at least 200 Hz, at least 300 Hz, at least 400 Hz or at least 500 Hz. By using the vibration drive, the heat conductor can be reliably vibrated, so that in particular the rheological stresses of the heat conductor can be reliably reduced.

[0033] A further development of the invention provides that the mounting device has a mounting fixture acting on the cell module, via which a pressing force is applied on the one hand and a vibrating movement is applied to the cell module on the other hand. The mounting fixture is used to grip the cell module. The mounting fixture preferably acts directly on the cell module. Both the pressing force and the vibrating movement are applied to the cell module via the mounting fixture, i.e., only via the mounting fixture. This means that the pressing force and the vibrating movement are applied to the mounting fixture away from the cell module and are transmitted to the cell module via the mounting fixture.

[0034] For example, it is provided that the pressing force is applied to the mounting fixture at a distance from the vibration movement. The pressing force is preferably applied to the cell module by means of an actuator, in particular by means of a push rod. In this respect, the pressing force can be applied to the mounting fixture by means of the push rod and transmitted to the cell module via the mounting fixture by means of the actuator. The vibration movement is preferably transmitted to the mounting fixture at a distance from the pressing force. For example, the vibration drive acts on the mounting fixture at a distance from the push rod or the actuator for this purpose. The described process has the advantage of high process reliability when manufacturing power batteries.

[0035] One refinement of the invention provides that the support element has a vibration drive and applies the vibration movement to the battery housing, in particular to the wall of the battery housing. In other words, the vibration movement is applied to the heat conducting medium via the wall, preferably only via the wall, in order to cause it to vibrate. The design of the support element with the vibration drive is easy to implement, so that a production device for producing power batteries with a bracket can be implemented particularly easily and cost-effectively.

[0036] A refinement of the present invention provides that the pressing force acting on the mounting device is adjusted and the force acting on the support element is determined, and if the force exceeds a threshold value, the support element is displaced during the pressing to reduce the force. In order to minimize the amount of heat conductor required during the production of the power battery, it is desirable to increase the pressing force, that is, to use the mounting device to press the cell module more strongly against the heat conductor, so that a uniform distribution of the heat conductor between the cell module and the wall of the battery housing is achieved even when a thinner heat conductor layer is used.

[0037] However, this increase in the pressing force can lead to mechanical damage to the cell module or the battery housing. This is particularly because the cell module and the battery housing are manufactured with large dimensional tolerances, and the thermal conductor is used to compensate for these manufacturing tolerances. It is in the cell module area where the thermal conductor layer is thinner than in other areas that an unacceptable high force is applied to the wall and / or the cell module. Therefore, for example, it can be provided that the pressing force acting on the mounting device is measured and reduced when the pressing force exceeds a threshold value. In particular, in the case of fluctuations in the layer thickness of the thermal conductor between the cell module and the wall, local overload of the cell module may still occur.

[0038] Therefore, it is provided that during the insertion of the cell module into the receiving chamber or during the pressing of the cell module onto the heat conducting medium, the force acting on the support element is determined. If the determined force exceeds a threshold value, the force is reduced by correspondingly moving the support element, i.e. moving the support element in a direction away from the mounting device. In the manner described, the wall can be protected from inadmissibly large forces, which could lead to damage to the wall or the battery housing. Damage to the cell module due to excessive forces acting between the wall and the mounting device via the cell module can also be effectively prevented.

[0039] One refinement of the invention provides that the vibration drive applies the vibration movement to the battery housing, in particular to the wall of the battery housing, via the support element. The vibration drive is therefore not assigned to the support element itself, but only to the carrier. The vibration drive acts on the battery housing or on the wall of the battery housing via the support element. This makes the design of the production device particularly simple.

[0040] The invention also relates to a manufacturing device for manufacturing a power battery for a motor vehicle, in particular for carrying out a method according to an embodiment within the scope of this description, wherein the battery housing of the power battery has a receiving chamber for receiving a cell module. It is provided that the manufacturing device is arranged and designed to vibrate a heat conductor present between the cell module and a wall of the battery housing that delimits the receiving chamber during the manufacturing of the power battery at least temporarily.

[0041] For the advantages of such an embodiment of the manufacturing device or such a process, please refer to the already described content. Both the manufacturing device and the method for operating the manufacturing device can be improved according to the embodiments within the scope of this description, so in this regard, reference can be made to the relevant content. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention is described in detail below based on the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. It is shown here:

[0043] Figure 1 A schematic diagram showing a first embodiment of a manufacturing device for manufacturing a power battery for a motor vehicle, and

[0044] Figure 2 A schematic diagram showing a second embodiment of the production apparatus. DETAILED DESCRIPTION

[0045] Figure 1A schematic diagram of a first embodiment of a manufacturing device 1 for manufacturing a power battery 2 and a portion of the power battery 2 are shown. A battery housing 3 having a receiving chamber 4 for receiving a single cell module 5 and the single cell module 5 are also shown for the power battery 2. The receiving chamber 4 is bounded by a wall 6, i.e. a base plate, of the battery housing 3. A fastening element 7 is fastened to the base plate 6 or, alternatively, to a wall not shown here, on which a tolerance compensation element 8 can be arranged. The single cell module 5 can be fastened to the fastening element 7 by means of the tolerance compensation element 8. Preferably, the height of the tolerance compensation element 8 is adjustable.

[0046] The battery module 5 is installed in the receiving chamber 4 by means of a mounting device 9. The mounting device has a mounting fixture 10, on which at least one holding element 11 is arranged, and in the embodiment shown here, a plurality of holding elements 11 are arranged. If the holding element 11 is mentioned within the scope of this specification, the corresponding implementation scheme can always be transferred to each of the plurality of holding elements 11. The mounting fixture 10 acts on the cell module 5 via the holding element 11. The mounting fixture 10 is coupled to an actuator, for example, via a push rod 12. With the aid of the actuator, a pressing force can be applied to the mounting fixture 10 via the push rod 12, and the pressing force is transmitted to the cell module 5 via the holding element 11.

[0047] By means of the mounting device 9, the cell module 5 can be inserted into the receiving chamber 4 on the one hand, and the cell module can be pressed against the heat conductor 13, which is arranged between the wall 6 and the cell module 5. As the heat conductor 13, a multi-component heat conductor is preferably used, which in this respect comprises at least a first component and a second component. The first component is, for example, a carrier material and the second component is a filler, wherein the thermal conductivity of the heat conductor 13 is mainly achieved by means of the filler. For this purpose, the filler has a higher thermal conductivity than the carrier material.

[0048] During the insertion of the cell module 5 into the receiving chamber 4 or the pressing of the cell module 5 onto the heat conducting medium 13, the battery housing 3 is arranged on a bracket 14, by means of which the wall 6 is supported. The bracket 14 is preferably a flexible bracket. It has a plurality of supporting elements 15, which are arranged displaceably on or on a carrier 16. The bracket 14 is designed in such a way that it can locally deflect the wall 6 in a direction away from the mounting device 9, in particular elastically.

[0049] It is provided that during the pressing of the cell module 5 onto the heat conductor 13, the heat conductor 13 is vibrated. In the first embodiment shown here, this is achieved by means of a mounting device 9. For this purpose, the mounting device 9 has a vibration drive 17, which has, for example, a plurality of linear vibrators 18. The vibration drive 17 acts on the mounting fixture 10, so that the vibration movement generated by the vibration drive 17 affects the cell module 5 only via the mounting fixture 10 and the holding element 11, and via the cell module affects the heat conductor 13. The vibration of the heat conductor 13 reduces its rheological stress, so that the cell module 5 can be pressed with a smaller pressing force by means of the mounting device 9.

[0050] Figure 2 A schematic diagram of a second embodiment of the production device 1 is shown. It is similar to the first embodiment, so reference is made to the above description here, and only the differences are discussed below. The difference is that the vibration drive 17 does not belong to the mounting device 9, but to the bracket 14. As shown, the vibration drive 17 acts on the carrier 16, so that the vibration movement caused by the vibration drive 17 is transmitted via the carrier 16 to the support element 15 and via the support element to the wall and finally to the heat conducting medium 13. For this purpose, the linear vibrators 18 act on the carrier 16 at a distance from each other and are connected to the support element 15 only via the carrier 16.

[0051] The above-described embodiment of the manufacturing device 1, whether in its first embodiment or its second embodiment, achieves a significant reduction in the rheological stress of the heat conductor 13. As a result, the cell module 5 can be pressed onto the heat conductor 13 with a smaller pressing force, thereby reliably avoiding damage to the battery housing 3 and / or the cell module 5.

[0052] List of reference numerals:

[0053] 1 Manufacturing equipment

[0054] 2 Power battery

[0055] 3 Battery housing

[0056] 4. Holding Room

[0057] 5 Monomer modules

[0058] 6 walls

[0059] 7 Fastening elements

[0060] 8 Tolerance compensation elements

[0061] 9 Installing the equipment

[0062] 10. Install the fixture

[0063] 11. Holding element

[0064] 12 Putter

[0065] 13 Thermal Conductivity

[0066] 14 Bracket

[0067] 15 Support element

[0068] 16 Bearing

[0069] 17 Vibration Driver

[0070] 18 Linear vibrator

Claims

1. A method for manufacturing a power battery (2) for a motor vehicle, wherein: A battery housing (3) of a power battery (2) has a receiving chamber (4) for receiving a cell module (5), characterized in that during the production of the power battery (2), a heat conductor (13) located between the cell module (5) and a wall (6) of the battery housing (3) which delimits the receiving chamber (4) is at least temporarily vibrated, wherein the battery housing (3) is arranged on a supporting element (15) of a bracket (14) which supports the wall (6), and then when inserted into the receiving chamber (4), the cell module (5) is pressed against the cell module (5) by means of a mounting device (9). On the thermal conductor (13), the pressing force acting on the mounting device (9) is adjusted and the force acting on the supporting element (15) is determined, and if the force exceeds a threshold value, the supporting element (15) is displaced during pressing to reduce the force, wherein supporting surfaces are formed on the wall, which are used to support or fasten the cell modules according to the arrangement scheme of the cell modules in the receiving chamber, and the supporting surfaces are arranged in such a way that the cell modules are spaced from the walls of the battery housing while being supported on the supporting surfaces according to the arrangement scheme of the cell modules in the receiving chamber.

2. The method according to claim 1, characterized in that First, a heat-conducting agent (13) is applied to the wall (6), and then the cell module (5) is inserted into the receiving chamber (4), wherein the cell module (5) is pressed against the vibrating heat-conducting agent (13).

3. The method according to claim 1 or 2, characterized in that: The heat conducting medium (13) is vibrated by means of the support (14) and / or the mounting device (9).

4. The method according to claim 1 or 2, characterized in that: The carrier (14) and / or the mounting device (9) has at least one vibration drive (17).

5. The method according to claim 1 or 2, characterized in that: The mounting device (9) has a mounting fixture (10) which acts on the cell module (5) and via which a pressing force is exerted on the one hand and a vibrating movement is imparted to the cell module (5) on the other hand.

6. The method according to claim 1 or 2, characterized in that: The support element (15) has a vibration drive (17) and exerts a vibration movement on the battery housing (3).

7. The method according to claim 4, characterized in that The vibration drive (17) exerts a vibration movement on the battery housing (3) via the support element (15).

8. A manufacturing device (1) for carrying out the method as claimed in any one of the preceding claims to manufacture a power battery (2) for a motor vehicle, wherein: The battery housing (3) of a power battery (2) has a receiving chamber (4) for receiving a single cell module (5), characterized in that the manufacturing device (1) is arranged and designed to cause a thermal conductor (13) present between the single cell module (5) and a wall (6) of the battery housing (3) which defines the receiving chamber (4) to vibrate at least temporarily during the manufacturing process of the power battery (2), wherein the battery housing (3) is arranged on a supporting element (15) of a bracket (14) supporting the wall (6), and then, when loaded into the receiving chamber (4), the single cell module (5) is pressed against the thermal conductor (13) by means of a mounting device (9), the pressing force acting on the mounting device (9) is adjusted and the force acting on the supporting element (15) is determined, and if the force exceeds a threshold value, the supporting element (15) is displaced during the pressing to reduce the force.

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