Process arrangement for assembling a battery system

Abstract

Process arrangement for assembling a battery system consisting of battery modules (7) inserted into a battery housing (1), each of which battery module (7) can be inserted into the battery housing (1) in a module insertion process, in which in one placement step the respective battery module (7) can be inserted into the battery housing (1), and In an application step preceding the setting step, an application unit (19) applies at least one thermal paste bead (17) to a housing base (11) to fill a gap between the battery module (7) and the housing base (11), wherein the application unit (19) is integrated into a control loop (R) in which an electronic control unit (21) adjusts the thermal paste flow rate applied by the application unit (19) as a function of a setpoint, thereby forming a thermal paste layer (13) on the housing base (11), characterized in that the control loop (R) has an air inclusion sensor (43) which, after the setting step, detects the size and / or position of air inclusions (15) between the battery module (7) or housing base (11) and the thermal paste layer (13) as an actual air inclusion value (z3(x,y)), and that the control loop (R) adjusts the thermal paste flow rate applied by the application unit (19) on the basis of the actual air inclusion value (z3(x,y)).

Description

[0001] The invention relates to a process arrangement for assembling a battery system for an electrically powered vehicle according to the preamble of claim 1.

[0002] The high-voltage battery of an electric vehicle comprises battery modules arranged within a battery housing. Typical battery assembly takes place in a production facility where an industrial robot, operating in a fully automated process chain, first provides an empty battery housing that is open at the top. The interior of the housing is divided into compartments by partitions, each containing a battery module.

[0003] Subsequently, a module placement process is carried out in which, in a placement step, the battery modules are inserted into a battery housing in a placement direction with an insertion movement until a mounting position is reached in which the respective battery module rests correctly on a housing-side system contour.

[0004] Before the insertion step, an application process is carried out in which a highly viscous thermal paste is applied to the housing base to prevent a heat-insulating air gap between the battery module and the housing base during assembly. After the thermal paste application, the battery module is pressed against the thermal paste with a specific pressure during the module insertion process.

[0005] For optimal heat dissipation, it is crucial that the gap between the battery module and the housing base is almost completely filled with thermal paste to prevent air pockets. Therefore, a known application step involves applying an excess of thermal paste to the housing base, significantly exceeding the required amount. This results in excessive consumption of the expensive thermal paste, an excessive weight for the high-voltage battery, and necessitates high pressing forces to seat the battery module in the thermal paste.

[0006] From DE 10 2021 105 355 A1 a detection device and a method for applying a thermally conductive compound to a cooling base of a battery housing are known.

[0007] A method for determining heat transfer is known from DE 10 2019 005 453 A1. A method for manufacturing a battery is known from US 2019 / 0 181 514 A1. A method for thermally connecting a heat source of a battery system to a heat sink of a battery system is known from DE 10 2019 102 003 B4. A method for manufacturing an electrical energy storage device is known from DE 10 2022 002 416 A1. A battery arrangement for a vehicle is known from DE 10 2018 208 027 A1. A method for manufacturing a battery module is known from DE 10 2013 220 690 A1.

[0008] The object of the invention is to provide a process arrangement for the assembly of a battery system for an electrically powered vehicle in which the use of thermal paste can be reduced compared to the prior art while otherwise maintaining the same heat dissipation performance.

[0009] The problem is solved according to the invention by a process arrangement having the features of claim 1. Preferred embodiments of the invention are disclosed in the dependent claims.

[0010] The invention relates to a process arrangement for assembling a battery system for an electrically powered vehicle. The battery system consists of battery modules inserted into a battery housing. Each battery module is inserted into the battery housing in a module insertion process. This process includes an insertion step in which the respective battery module is inserted into the battery housing until it reaches a mounting position. This insertion step is preceded by an application step in which an application unit applies at least one bead of thermal paste to the bottom of the housing to fill a gap between the battery module and the housing base.

[0011] The application unit is integrated into a control loop in which an electronic control unit, depending on a setpoint, adjusts the flow rate of thermal paste dispensed by the application unit, thereby forming a thermal paste layer on the housing base. According to the characterizing part of claim 1, the control loop includes an air inclusion sensor that detects the size and / or position of air inclusions between the battery module / housing base and the thermal paste layer as an actual air inclusion value. Based on this actual air inclusion value, the control loop adjusts the flow rate of thermal paste applied by the application unit. This ensures that air inclusions between the contact surface of the battery module base and the thermal paste layer cover as little of the contact area as possible.For example, the control system according to the invention achieves a 90% surface contact of the thermal paste layer to the battery module contact surface, so that the contact surface area covered by the remaining air inclusions is 10%.

[0012] The process arrangement can be a self-learning system with which at least one teach-in module setting process can be carried out based on a teach-in target value. For this purpose, the process arrangement can include a correction module that allows the teach-in target value to be corrected to a correction target value during the teach-in module setting process. A subsequent module setting process following the teach-in module setting process can therefore be optimized based on the correction target value. In the subsequent module setting process following the teach-in module setting process, the control unit no longer adjusts the thermal paste flow rate based on the original teach-in target value, but rather based on the correction target value generated in the preceding teach-in module setting process.The correction is made depending on an actual value of the thermal paste layer, in particular an actual layer thickness, which is detected by sensors at the end of the application step and / or after completion of the setting process.

[0013] In a concrete implementation, the correction module can be connected to a layer testing unit via a signal path. After the application step is complete, the layer testing unit can perform a layer testing process in which a sensor detects an actual value, specifically the actual layer thickness, of the thermal paste layer. The layer testing unit also includes a comparator module that calculates a difference value by comparing the actual value with a stored target value. Based on this difference value, the correction module generates the target correction value, which then serves as the basis for the subsequent module setting process following the initial learning process.

[0014] The determined correction target value can be read into and stored in a database that is part of the control loop. This makes the correction target value available for the application step of the subsequent module setting process.

[0015] It is preferred if the testing process of the layer testing unit can be carried out before the setting step, i.e., with the thermal paste layer still unpressed.

[0016] Alternatively and / or additionally to the layer inspection unit, the correction module can be connected to at least one air inclusion inspection unit. After completion of the setting step, this unit can perform an air inclusion test in which the air inclusion sensor detects the actual air inclusion value of the thermal paste layer. The air inclusion inspection unit can also include a comparator module that determines a difference value by comparing the actual air inclusion value with a target air inclusion value. Based on this difference value, the correction module can generate the target correction value. Preferably, both the layer inspection unit and the air inclusion inspection unit can be provided. In this case, the target correction value is generated based on the difference value determined by both the layer inspection unit and the air inclusion inspection unit.The differential values ​​generated by the layer testing unit and the air inclusion testing unit reflect different information content: In the layer testing unit, the actual value is recorded with the thermal paste layer still uncompressed, while in the air inclusion testing unit, the actual value is recorded with the thermal paste layer pressed.

[0017] Alternatively and / or additionally, the control loop can include a setting force test unit with a setting force sensor. The setting force sensor detects an actual setting force value during the setting step, based on which the control loop can be adjusted. In particular, the correction module can generate the target correction value based on the detected actual setting force value.

[0018] In a preferred embodiment, the control loop can incorporate a sensor for detecting the amount of thermal paste applied or a correlated parameter, such as the actual profile height of the thermal paste bead applied by the application unit. The electronic control unit of the control loop can include a comparator module that determines a difference value by comparing the actual profile height with the learning / correction target value. Based on this difference value, the electronic control unit controls the application unit.

[0019] The control loop can also include a compensation unit with a sensor that detects unevenness on the housing base surface. The compensation unit can have a comparator module that calculates a difference between the actual surface profile and a stored reference value. Based on this difference, the learning / correction target value can be adjusted depending on the detected surface profile of the housing base.

[0020] In a technical implementation, the sensor for the layer inspection unit can be a linear scanner that optically detects the surface of the uncompressed thermal paste layer. The sensor for the air inclusion inspection unit, on the other hand, can be an X-ray device that performs an X-ray inspection of the contact surfaces of the thermal paste layer with the battery module and the housing base. The sensor for detecting the thermal paste fill quantity can be a photo-optical sensor, which, for example, can detect the cross-section of the application unit's outlet through which the thermal paste bead emerges. Alternatively and / or additionally, the sensor for detecting the actual surface profile of the housing base can also be a linear scanner that optically captures the housing base surface.

[0021] By adjusting the geometry of the uncompressed thermal paste layer, it is ensured that after the setting process the proportion of air inclusions in the gap between the battery module and the housing base is reduced, compared to a thermal paste layer with a consistently constant layer thickness.

[0022] According to a first embodiment, the thermal paste layer, in its uncompressed state (i.e., before the insertion step), can be divided into a material layer body and a material dome. The material layer body preferably covers the housing base completely, with a constant layer thickness and / or preferably with a substantially flat surface. The material dome projects from the flat surface of the layer by a certain amount. Preferably, the material dome is offset inwards from the outer edge of the material layer body by a certain amount, so that the material dome is completely enclosed by the flat surface of the layer in the circumferential direction.

[0023] With the thermal paste layer geometry described above, the setting process proceeds as follows: During the setting process, the battery module initially comes into contact with the material dome. As the setting process continues, the material dome is compressed, utilizing the excess material, so that its material is pushed in a wave-like motion, specifically a circular wave, towards the edge of the thermal paste layer. This occurs while displacing air inclusions from the gap between the battery module and the housing base. It is important to emphasize that the circular wave, or material wave, acts three-dimensionally on the thermal paste layer. The pressure exerted by the material wave on the thermal paste therefore acts across the entire thickness of the thermal paste layer. Consequently, not only are the air inclusions at the contact surface with the battery module base displaced, but also those at the contact surface with the housing base.

[0024] In a first design variant, the battery module base is aligned parallel to the flat layer surface during the placement step. In this case, the material dome is positioned centrally within the material layer. The battery module base initially comes into contact with the apex of the material dome. As the placement step progresses, the material dome is compressed, using up the excess material. Its material is thus pushed towards the edge of the thermal paste layer in the form of a circular wave. This outward-moving circular wave forces air inclusions out of the forming contact area between the battery module and the thermal paste layer. Due to the parallel alignment of the battery module base to the flat layer surface, the material dome can be positioned centrally within the material layer.This allows the circular wave to spread evenly across the entire contact surface, starting from the center of the surface.

[0025] In a second embodiment, the battery module base is no longer aligned parallel to the flat layer surface, but rather at an acute angle. To achieve a substantially uniform propagation of the circular wave across the entire contact area despite the tilted battery module, the material dome is preferably no longer positioned in the center of the surface, but offset laterally from the center of the material layer body towards the apex of the tilt angle.

[0026] An embodiment of the invention is described below with reference to the accompanying figures.

[0027] They show: Fig. Figures 1 to 11 are different illustrations that demonstrate the process arrangement for assembling a battery system.

[0028] In the Fig. Figure 1 shows a partial sectional view of an assembled high-voltage battery system for an electric vehicle. The battery system comprises a battery housing 1 with a housing cover 2. The interior of the housing is divided into chambers 5 by partitions 3, each containing a battery module 7. Of the chambers 5, the Fig. Figure 1 shows only a chamber 5 with a battery module 7 positioned therein. The battery module 7 is designed according to the Fig. 1 supported on a housing-side support contour 9. To reduce heat-insulating air inclusions 15 ( Fig. 4) between the battery module and the housing base 11, the gap between the battery module 7 and the housing base 11 is largely completely filled with a thermal paste layer 13.

[0029] The thermal paste layer 13 consists according to the Fig. 4 consisting of adjacent thermal paste beads 17, which have an oval cross-section. This results in the following: Fig. The four indicated air inclusions 15 are located between the contact surface 12 of the battery module base or the housing base 11 and the thermal paste layer 13. The aim is for the air inclusions 15 to cover only the smallest possible area of ​​the contact surfaces 12. For example, a 90% contact area between the thermal paste layer 13 and the contact surfaces 6 might be desired, so that the contact area covered by the air inclusions 15 would be 10%.

[0030] During battery assembly, each of the battery modules 7 is positioned in the assigned chamber 5 of the battery housing 1 in a module placement process. The module placement process comprises an application step and a placement step. In the placement step, the respective battery module 7 is placed in a placement direction with a placement force F ( Fig. 2b) into chamber 5 until reaching the system contour 9. The setting step is preceded by the application step, in which an application unit 19 ( Fig. 5) The thermal paste beads 17 were applied to the housing base 11 to fill the gap between the battery module 7 and the housing base 11.

[0031] In the module placement process, it is important to apply the thermal paste fill quantity precisely and without excess material to the housing base 11. This saves thermal paste material; in addition, the placement force F required during the placement step ( Fig. 2b), with which the battery module 7 is pressed onto the thermal paste layer 13, can be reduced. For this purpose, according to the Fig. 2a and Fig. 2b a process arrangement with a control loop R, a compensation unit 29, a layer testing unit 35, an air inclusion testing unit 41 and a setting force testing unit 47 ( Fig. 2b) provided, with which the module setting process in a way that is in the Fig. The process sequence indicated in 2a is feasible. For the sake of clarity, the following is included in the Fig. 2a and Fig. Figure 2b does not show the entire battery housing 1 to be fitted with the battery modules 7, but only the base 11 of a single chamber 5 of the battery housing 1. The base 11 is in the Fig. 2a and Fig. 2b indicated at different process times t1 to t4 of the process sequence.

[0032] A key aspect of the invention is that the battery assembly involves at least one or more learning module placement processes ( Fig. 2a and Fig. 2b) and subsequent module setting processes ( Fig. 7) is subdivided. In the learning module placement process ( Fig. 2) The control loop R is extended by the three test units 35, 41, 47, the correction module 27 and the target setpoint unit 14 to provide a learning target setpoint z. S (x,y) of the control loop R directed towards a correction target value z SK (x,y) to optimize. The subsequent module placement process ( Fig. 7) no longer takes place using the original learning target specification z S (x,y), but using the already optimized correction target value z SK (x,y) instead, so that the above components (i.e., test units 35, 41, 47, correction module 27, target setpoint unit 14) are in the Fig. 7 are omitted.

[0033] The control loop R consists of the learning module placement process according to the Fig. 2a and Fig. 2b consisting of an electronic control unit 21, the application unit 19, a sensor 23 and the setpoint unit 14, which provides the learning setpoint z S (x,y) for the control loop R. In the signal path from the setpoint unit 14 to the control unit 21, the correction module 27 and a database 26 are interposed. In the teach-in module setting process ( Fig. 2a and Fig. 2b) Correction module 27 corrects a learning target value z read from the target setpoint unit 14. S (x,y) to the correction target specification z SK (x,y). This is read into database 26 and stored there. In the subsequent module setting process that takes place after the initial module setting process ( Fig. 7) A correction target value is generated from database 26 – that is, no longer from the target unit 14. SK(x,y) read in the direction of control unit 21. Based on the correction target value z SK (x,y) During the application step, the control unit 21 sets an optimized thermal paste flow rate, which is applied by the application unit 19 as a thermal paste bead 17 onto the housing base 11. The sensor 23 detects the applied thermal paste quantity or a correlated parameter, such as the actual bead height z1(x,y). The control unit 21 determines the correction value z by comparing the actual bead height z1(x,y) with the target correction value z. SK (x,y) a difference value Δz1(x,y). Based on the difference value Δz1(x,y), the electronic control unit 21 controls the application unit 19.

[0034] In the process arrangement according to the invention, both the initial module setting process and the subsequent module setting process are carried out taking into account any existing floor irregularities t ( Fig. 3) carried out in the housing base 11. For this purpose, the compensation unit 29 has a sensor 31 which measures an actual surface profile t(x,y) ( Fig. 3) of the housing base 11. In addition, the compensation unit 29 has a comparator module 33, which consists of the actual surface profile t(x,y) and a stored reference value t. ref (x,y) determines a difference value Δt(x,y), which is used in a summing block of the correction target specification z SK (x,y) is added together.

[0035] The one in the Fig. 2a and Fig. The teaching-in module placement process outlined in section 2b takes place, for example, at the beginning of battery module assembly or after a tool change. Accordingly, at process time t1, the still unpopulated housing base 11 is provided. Using the compensation unit 29, the actual surface profile t(x,y) is recorded, and the difference value Δt(x,y) is calculated from this. In the further course of the process, at process time t2, the application step takes place, in which the application unit 19 applies the thermal paste beads 17 to the housing base 11.

[0036] After completion of the application step, at process time t3 the still uncompressed thermal paste layer 13 is formed on the housing base 11. At process time t3, the layer inspection unit 35 starts a layer inspection process in which a sensor 37 detects an actual layer value z2(x,y) of the thermal paste layer 13. A comparator module 39 of the layer inspection unit 35 determines a difference value Δz2(x,y) by comparing the actual layer value z2(x,y) with a stored target value z. S2 (x,y). The difference value Δz2(x,y) is passed to correction module 27.

[0037] Subsequently, at process time t4, the insertion step takes place, in which the thermal paste layer 13 is pressed between the battery module 7 and the housing base 11 with the insertion force F. After completion of the insertion step, the air inclusion testing unit 41 starts an air inclusion testing process. During the air inclusion testing process, an air inclusion sensor 43 detects the size and / or position of the air inclusions 15 as an actual air inclusion value z3(x,y) of the pressed thermal paste layer 13. A comparator module 45 determines the target value z by comparing the actual air inclusion value z3(x,y) with a target value z. S3 (x,y) a difference value Δz3(x,y). This is also passed to correction block 27. In correction block 27, the learning target value z is determined based on the two difference values ​​Δz2(x,y) and Δz3(x,y). S (x,y) into the correction target specification z SK (x,y) corrected.

[0038] The setting force test unit 47 is used during the setting step: This unit has a setting force sensor 49 that records an actual setting force value during the setting step. Based on the recorded actual setting force value, the correction module 27 generates the target correction value z. SK (x,y).

[0039] With the help of the three test units 35, 41, 47, the target specification unit 14 and the correction module 27, a self-learning system is provided that works as follows: The teaching-in module setting process is based on the teaching-in target specification stored in the target specification unit 14. S (x,y) is performed. During the learning module setting process, the correction block 27 automatically corrects the learning target value z. S (x,y) directed towards the target correction value z SK (x,y), which is stored in database 26. The target correction value z SK (x,y) is then available for the subsequent module setting process.

[0040] In at least one of the learning module setting processes, the correction block 27 is used to self-learn from the learning target specification. S (x,y), which forms a starting point, the target correction value z SK (y,x) is determined. This is read into database 26 and stored there. The subsequent module placement process ( Fig. 7) is based on the correction target specification stored in database 26 z SK (y,x) feasible.

[0041] The application unit 19 is according to the Fig. 5. A conveying device whose conveying housing includes a screw conveyor for conveying thermal paste. The screw conveyor is mounted longitudinally displaceable within the housing to adjust the flow rate, thereby allowing adjustment of the outlet nozzle cross-section between the outlet nozzle and the screw conveyor and thus the flow rate of thermal paste exiting the housing. The flow rate of thermal paste or a correlated parameter can be detected by means of sensor 23. For example, sensor 23 can be a photo-optical sensor that detects the longitudinal displacement of the conveying screw conveyor.

[0042] The air inclusion sensor 43 used in the air inclusion test unit 41 is a radiometric device as described in the Fig. 6a is indicated. This has an X-ray or gamma radiation source 42 that generates X-rays or gamma radiation and an imaging detector 44, wherein the X-rays or gamma radiation are emitted as reflected X-rays in the Fig. 6a is directed towards the underside of the housing. For example, the imaging detector 44 can produce an X-ray image according to the Fig. 6b determine the air inclusions 15 located in the contact surface 12 between the battery module 7 and the thermal paste layer 13. Based on the size and / or position of the air inclusions 15, the radiometry device determines the actual air inclusion value z3(x,y).

[0043] The setpoint stored in the air inclusion test unit 41 z S3 (x,y) is preferably a maximum air inclusion value, which specifies the maximum permissible contact area fraction that can be covered by the air inclusions 15. For example, the maximum value can be 10% of the contact area 12 of the thermal paste layer 13 to the battery module 7, so that the permissible area coverage fraction of the contact area 12 is at least 90%.

[0044] The Fig. Figures 8 to 11 relate to design variants, each exhibiting different geometries of the thermal paste layer 13 applied to the housing base 11 in its uncompressed state. These geometries ensure that, after the setting process, the proportion of air inclusions 15 between the contact surface 12 of the battery module base and the thermal paste layer 13 is reduced, compared to a thermal paste layer 13 with a consistently constant thickness.

[0045] As from the Fig. As can be seen from Figure 8, the thermal paste layer 13, in its uncompressed state, is divided into a material layer body 10 and a material dome 8. The material layer body 10 covers the housing base 11 completely, with a constant layer thickness and a substantially flat surface 6. The material dome 8 projects upwards from the flat surface 6 by an allowance a. Furthermore, the material dome 8 is offset inwards from the outer edge of the material layer body 10 by an offset v, so that the material dome 8 is completely enclosed by the flat surface 6 in the circumferential direction. Fig. The material dome 8 has a circular base with a spherically rounded top.

[0046] Based on the Fig. 8 and Fig. Section 9 describes the setting step: Accordingly, the battery module 7, which moves downwards in the setting direction, is in the Fig. 8 with its battery module base aligned parallel to the flat layer surface 6. The battery module base initially comes into contact with the apex of the material dome 8. In the subsequent setting steps, the material dome 8 is compressed, consuming the excess material a. Its material is therefore considered to be in the Fig. The circular wave 51, indicated in 9, is pushed towards the edge of the thermal paste layer 13. By means of the outwardly moving circular wave 51, the air inclusions 15 are displaced outwards from the forming contact surface 12 between the battery module 7 and the thermal paste layer 13.

[0047] Due to the plane-parallel alignment of the battery module base to the flat layer surface 6, the material dome 8 is positioned centrally within the material layer body 10. This enables a uniform propagation of the circular wave 51 from the center of the surface across the entire contact area 12.

[0048] Unlike the Fig. 8 indicates in the Fig. 10 The material dome 8 has a polygonal base, from which the material dome 8 is raised pyramidally by an allowance a.

[0049] In the view of Fig. 11 is - as in the Fig. 9 - a setting step is indicated in which the battery module base is no longer aligned parallel to the flat layer surface 6, but in a tilted orientation with an acute tilt angle α. In order to achieve a substantially uniform propagation of the circular wave 51 over the entire contact area 12 despite the tilted battery module 7, the following is shown in the Fig. 11 the material dome 8 is no longer arranged in the center of the surface, but offset laterally from the center of the surface of the material layer body 10 in the direction of the apex of the tilt angle α. Reference symbol list 1 battery case 2 housing covers 3 partition walls 5 chambers 6 flat layer surface 7 Battery module 8 Material Dome 9 Investment contour 10 material layer bodies 11 Case bottom 12 Contact area between thermal paste layer and battery module / housing base 13 Thermal paste layer 14 Target unit 15 air inclusions 17 Thermal paste bead 19 application units 21 Control unit 23 Sensor 26 database 27 Correction module 29 Compensation unit 31 Sensor 33 Comparator module 35-layer test unit 37 Sensor 39 Comparator module 41 Air inclusion test unit 42 X-ray or gamma radiation source 43 Air inclusion sensor 44 imaging detector 45 Comparator module 47 Setting force test unit 49 Setting force sensor 51 circular wave R control loop F setting force α Tilt angle v Offset dimension a measurement t unevenness of the ground t(x,y) Actual surface profile t ref (x,y) reference value Δt(x,y) difference value t1 - t4 Process time z1(x,y) Actual profile height Δz1(x,y) difference value z2(x,y) layer actual value z S2 (x,y) Setpoint Δz2(x,y) difference value z3(x,y) Actual value of air inclusion z S3 (x,y) Setpoint Δz3(x,y) difference value z S (x,y) Learning target value z SK (x,y) Correction target value

Claims

[1] Process arrangement for assembling a battery system consisting of battery modules (7) inserted into a battery housing (1), each of which can be inserted into the battery housing (1) in a module insertion process, in which in one placement step the respective battery module (7) can be inserted into the battery housing (1), and In an application step preceding the setting step, an application unit (19) applies at least one thermal paste bead (17) to a housing base (11) to fill a gap between the battery module (7) and the housing base (11), wherein the application unit (19) is integrated into a control loop (R) in which an electronic control unit (21) adjusts the thermal paste flow rate applied by the application unit (19) as a function of a setpoint, thereby forming a thermal paste layer (13) on the housing base (11), characterized by, that the control loop (R) has an air inclusion sensor (43) which, after the setting step, detects the size and / or position of air inclusions (15) between the battery module (7) or housing base (11) and the thermal paste layer (13) as an air inclusion actual value (z3(x,y)), and that the control loop (R) adjusts the thermal paste flow rate applied by the application unit (19) on the basis of the air inclusion actual value (z3(x,y)). [2] Process arrangement according to claim 1, characterized by that the process arrangement is a self-learning system with which at least one training module setting process is based on a training target specification (e.g. S (x,y)) is feasible, and that the process arrangement includes a correction block (27) with which the learning target specification (z S (x,y)) during the learning module setting process into a target correction value (z SK(x,y)) is correctable, so that a subsequent module setting process based on the correction target specification (z SK (x,y)) is feasible. [3] Process arrangement according to claim 2, characterized by , that the control loop (R) is in signal communication with at least one air inclusion test unit (41) which performs an air inclusion test of the thermal paste layer (13) after completion of the setting step, and that the control loop (R) is adjustable on the basis of the air inclusion test result, and that, in particular, the correction module (27) sets the correction target value (z) on the basis of the air inclusion test result SK (x,y)) is generated, and / or that, in particular, during the air inclusion testing process, a comparator module (45) generates a difference value (Δz3(x,y)) from a comparison of the actual air inclusion value (z3(x,y)) and a target value (z S3(x,y)) determined, and in particular the correction block (27) determines the correction target value (z) on the basis of the difference value (Δz3(x,y)). SK (x,y)) is generated. [4] Process arrangement according to one of the preceding claims, characterized by , that the thermal paste layer (13) in the uncompressed state, i.e. before the setting step, is divided into a material layer body (10) which preferably covers the housing base (11) in a closed surface, preferably with a constant layer thickness and / or preferably with a flat layer surface (6), and into a material dome (8) which projects from the flat layer surface (6) by an allowance (a), and that in particular the material dome (8) is offset inwards from the outer edge of the material layer body (10) by an offset dimension (v), so that the material dome (8) is completely enclosed in the circumferential direction by the flat layer surface (6). [5] Process arrangement according to one of the preceding claims, characterized by , that in the setting step the battery module (7) first comes into contact with the material dome (8) and in the further course of the setting step the material dome (8) is compressed while using up the excess material (a), so that its material is pushed in a wave-like manner, in particular in the manner of a circular wave, towards the edge of the thermal paste layer (13), namely under Displacement of air inclusions (15) from the gap between battery module (7) and housing base (11). [6] Process arrangement according to claim 5, characterized by , that in the setting step a battery module base is aligned parallel to the flat layer surface (6), and that the material dome (8) is positioned in the center of the material layer body (10), or that In the setting step the battery module (7) is slightly tilted, so that the battery module base with the flat layer surface (6) forms an acute tilt angle (α), and that the material dome (8) is laterally offset from the center of the surface of the material layer body (10) towards the apex of the tilt angle (α). [7] Process arrangement according to any one of claims 2 to 6, characterized by , that the control loop (R) has a setting force test unit (47) with a setting force sensor (49) which detects an actual setting force value during the setting step, and that the control loop (R) is adjustable on the basis of the detected actual setting force value, and that, in particular, the correction module (27) sets the correction target value (z) on the basis of the detected actual setting force value SK (x,y)) is generated. [8] Process arrangement according to any one of claims 2 to 7, characterized by, that the correction module (27) is in signal communication with at least one layer testing unit (35) which, after completion of the application step, performs a layer testing process of the still uncompressed thermal paste layer (13), and that, based on the test result, the correction module (27) determines the target correction value (z SK (x,y)) is generated, and that in particular during the layer testing process a sensor (37) detects an actual layer value (z2(x,y)), in particular the actual layer thickness, of the thermal paste layer (13), and a comparator module (39) calculates a difference value (Δz2(x,y)) from a comparison of the actual value (z2(x,y)) and a stored target value (z s2 (x,y)) determined, and that the correction block (27) determines the correction target value (z) based on the difference value (Δz2(x,y)). SK (x,y)) is generated. [9] Process arrangement according to any one of claims 2 to 8, characterized by, that the control loop (R) has a database (26) in which the correction target specification (z SK (x,y)) is readable and storable, and that in the subsequent module setting process the application step is based on the correction target specification (z SK (x,y)) is feasible. [10] Process arrangement according to any one of the preceding claims, characterized by , that in the control loop (R) a sensor (23) is integrated to detect the applied actual amount of thermal paste or a correlated parameter, in particular an actual profile height (z1(x,y)) of the applied thermal paste bead (17), and that the electronic control unit (21) determines a difference value (Δz1(x,y)) from a comparison of the actual amount of thermal paste with a learning target value (zS(x,y)) or correction target value (zSK(x,y)), and that the electronic control unit (21) controls the application unit (19) on the basis of the difference value (Δz1(x,y)).

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