Contacting device for battery cells

Abstract

The invention relates to a contacting device (10) for battery cells (12), in particular pouch cells (14). These can be placed against the contacting device (10) by means of a pressing device (22). At least one pouch cell (14) is electrically contacted. The contacting device (10) is essentially designed as a flat printed circuit board (36) and comprises at least one temperature measuring surface (40) and a temperature sensor (42) located opposite said surface(s). Furthermore, the invention relates to a workpiece carrier (16) for receiving the contacting device (10) and the pouch cell (14), further to a forming unit (18) comprising power electronics (50), to a method for contacting battery cells (12), in particular pouch cells (14), with a liquid or solid electrolyte, and to the use of the contacting device (10).

Description

Technical FieldThe invention relates to a contacting device for battery cells, in particular pouch cells, which can be adjusted to the contacting device by means of a pressing device, wherein the workpiece carrier and at least one pouch cell are electrically contacted. The invention furthermore relates to a workpiece carrier for receiving battery cells, in particular pouch cells, and also to a forming unit having at least one power electronics and at least one workpiece carrier electrically connected to the latter, and to a method for contacting battery cells, in particular pouch cells, with a liquid or solid electrolyte. The invention further relates to the use of the contacting device for detecting parameters of a battery cell.Prior ArtDE 10 2014 208 225 A1 relates to a formation of battery cells. A device for forming battery cells is proposed, having a forming stage or forming electronics unit which comprises power electronics which set a regulated output voltage or a regulated output current.WO 2018 / 162719 A1 relates to a forming plant for forming battery cells, having a forming chamber in which a contacting unit for contacting the battery cells for forming is arranged, and having a feed device with which battery cells arranged on a workpiece carrier can be inserted and extended from outside the forming chamber into the free space of the forming chamber.WO 2020 / 239927 A1 relates to a product carrier system having a product carrier and having cell carriers for forming battery cells, wherein the product carrier has a guide device for receiving the cell carriers, wherein the cell carriers have contact elements for contacting an inserted battery cell and the cell carriers can be clamped in the product carrier and terminals for contacting the cell carriers are joined together centrally on the product carrier to form electrical terminals.Disclosure of the InventionAccording to the invention, a contacting device for battery cells, in particular pouch cells, is proposed, which can be adjusted to the contacting device by means of a pressing device and at least one pouch cell is electrically contacted. The proposed contacting device is substantially designed as a flat circuit board, which has at least one temperature measuring surface and at least one temperature sensor opposite the latter.By means of the very flat contacting device, a pouch cell inserted into a compartment of a workpiece carrier in the upright position, for example, can be contacted on its active surface and, when a pressure application to the pressing device, which is effected pneumatically, for example, a plurality of measured values can be recorded at different points of the pouch cell and transmitted to power electronics, for example a forming unit.The contacting device proposed according to the invention is designed such that it has at least one temperature measuring surface within a support region for the pouch cell on a first side of the contacting device. This allows a very flat construction of the contacting device to be achieved.In an advantageous development of the contacting device proposed according to the invention, the at least one temperature sensor assigned to the at least one temperature measuring surface is arranged on a second side, in particular on the rear side of the contacting device. This arrangement possibility of the temperature sensor on the rear side of each temperature measuring surface contributes to the space-saving removal, in particular to the flat construction of the contacting device proposed according to the invention.The contacting device is advantageously designed such that the at least one temperature sensor is designed as a PT100, PT1000 or also as an NTC temperature sensor, preferably in an SMD (surface mounted device) design.In the contacting device proposed according to the invention, the support area for the pouch cell on the first side preferably corresponds to the dimensions of the pouch cell. This optimally achieves a matching of the contact area to the surface of the pouch cell on which the parameters are to be detected.In the contacting device proposed according to the invention, edge regions are formed on both sides of the support regions, within which contact surfaces and / or plug connections extend. In the inserted state into a compartment of the workpiece carrier, which is effected, for example, in the upright position, electrical contacting of the contact surfaces and / or of the plug connections can be achieved in an advantageous manner by contacting the edge regions.In the contacting device proposed according to the invention, this can be electrically contacted on a contact surface protruding from the workpiece carrier and / or a plug connection in the state inserted into the workpiece carrier. This enables a very space-saving contacting as well as the possibility of electrically connecting a plurality of contacting devices accommodated in the workpiece carrier.In an advantageous development of the contacting device proposed according to the invention, contact lamellae which are assigned to the bearing region of the pouch cell and contact at least one contact lug of the pouch cell are arranged on the first side of the contacting device.The contacting device proposed according to the invention advantageously comprises at least one temperature measuring surface which contains copper or gold and / or is provided with a coating of aluminum or an aluminum alloy.The contacting device proposed according to the invention is preferably designed as a thin, multilayer printed circuit board or PCB (printed circuit board), as a result of which a high current capacity without significant temperature rise is ensured.In addition, the invention relates to a workpiece carrier for receiving battery cells, in particular pouch cells, having a number of compartments into which a pouch cell can be inserted in each case, wherein the compartments each have a pressing surface and a pneumatic pressing device opposite the latter, wherein the pneumatic pressing device is designed in particular as a pneumatic cushion. By providing a pneumatic pressing device, a gentle handling of the pouch cells inserted into the individual compartments of the workpiece carrier, preferably in the upright position, can be achieved. If these are filled with a liquid electrolyte, a uniform pressure distribution onto the active surface, which is to be sensed by the at least one temperature sensor, can be achieved.The workpiece carrier is advantageously designed such that a contacting device and a pouch cell are inserted in each of the compartments in the upright position. Such an arrangement enables the accommodation of a plurality of pouch cells to be tested or to be formed within the workpiece carrier, the space available of which can be almost completely exploited.In the workpiece carrier proposed according to the invention, it is provided that in the state set in a compartment, an active surface of the pouch cell and the first side of the contacting device having the at least one temperature measuring surface are arranged facing each other. This allows a substantially planar, planar contact to be achieved between the at least one temperature measuring surface and the pouch cell, which enables reliable and meaningful measurement values to be detected.The workpiece carrier proposed according to the invention is designed in such a way that, in the inserted state, the pouch cell and the contacting device are placed against one another by means of the pneumatic pressing device. As a result, a planar contact can be achieved in a uniform manner without damaging the pouch cell.In the workpiece carrier proposed according to the invention, it is furthermore provided that the pressing bodies assigned to each of the compartments are spring-mounted and firmly guided. The contact lugs of pouch cells are pressed against the contact lamellae, which is ensured by a resiliently mounted contact-pressure body. The respective battery cell and also the piston to which the pressing bodies are fastened operate during charging and during discharging of the battery.The workpiece carrier is advantageously designed in such a way that at least two battery cells designed as pouch cells can be accommodated and contact pressures of up to 100 bar can be applied to the active surface.Furthermore, the invention relates to a forming unit having at least one power electronics and a workpiece carrier electrically connected thereto, wherein a number of pouch cells are accommodated in the workpiece carrier, which pouch cells are each contacted via a contacting device.The invention furthermore relates to a method for contacting battery cells, in particular pouch cells, with a liquid or solid electrolyte by means of a contacting device and a workpiece carrier, wherein the following method steps are carried out: a) inserting a contacting device and a pouch cell in the upright position into a compartment of the workpiece carrier, b) establishing a contact between an active side of the pouch cell and at least one temperature measuring surface of the contacting device by pneumatic application of a pressing device, c) detecting pressure and / or further parameters on the active side of the pouch cell, and d) transmitting the detected measured values via an electrical connection by means of at least one fork connector or plug connector to a mainboard or power electronics of a forming unit.In addition, the method proposed according to the invention is designed in such a way that the temperature of the pouch cells can be determined at a plurality of points thereof, corresponding to the number of temperature measurement surfaces present on the contacting device. A temperature profile of the active side of a pouch cell to be contacted can thus be reliably determined.Finally, the invention relates to the use of the contacting device for detecting parameters of a battery cell, in particular pouch cells, and transmitting the measured parameters to power electronics of a forming unit.Advantages of the InventionBy configuring the contacting device proposed according to the invention, simple contacting of battery cells, in particular pouch cells, which are filled with a liquid electrolyte or a solid electrolyte, can be achieved. If the flat contacting devices, preferably constructed as printed circuit boards, are inserted in the upright position with a pouch cell to be contacted into compartments of a workpiece carrier, reliable contacting on the one hand and an extremely space-saving arrangement on the other hand can be achieved. To establish contact between the pouch cells having flexibility, a pneumatically acted upon pressing device designed as a pneumatic cushion is advantageously used. This makes it possible to compensate for unevennesses, and furthermore damage-free contacting of the pouch cells to be contacted is possible. Furthermore, the contacting device proposed according to the invention can achieve the result that, corresponding to the number of temperature measuring surfaces, temperature and pressure values can be recorded at a plurality of points on the active side of the pouch cell, for example, which enables a reliable statement about the state of the pouch cell to be contacted. The contacting device proposed according to the invention is advantageously designed as a flat circuit board and, with regard to its bearing region, is dimensioned in a size which preferably corresponds to the dimensions of the active side of the pouch cell to be tested. The solution proposed according to the invention enables simple contacting between the contacting device on the one hand and the power electronics of a forming unit on the other hand, for which purpose, for example, a fork connector can be advantageously used.The contacting device proposed according to the invention, which is designed in the form of a printed circuit board, makes it possible to measure the temperature precisely at a plurality of points of the pouch cell. Maintenance or replacement can be carried out very easily since a contacting device with a pouch cell is inserted into a compartment of the workpiece carrier, which preferably takes place in an upright position along a longitudinal side of the two components. Furthermore, the contacting device proposed according to the invention can be easily integrated with additional sensors, such as a pressure sensor and further temperature sensors.Furthermore, the very flat contacting device is suitable for high pressures, which may be required in the context of contacting solid-state batteries.The contacting device proposed according to the invention has on its rear side, i.e. at the respective locations at which the temperature measuring surfaces lie on the first side of the contacting device, temperature sensors which can be designed, for example, as a PT1000 temperature sensor or the like. In the contacting device proposed according to the invention, the one or preferably a plurality of temperature measuring surfaces are advantageously manufactured from gold or provided with coated copper or also configured as an aluminum coating. The temperature measuring surfaces are preferably incorporated, in particular embedded, into the first side of the contacting device in order to ensure a contact surface that is as homogeneous and planar as possible.The workpiece carrier is preferably designed such that a plurality of compartments are provided which are situated next to one another and into which the individual pairs of contacting devices and pouch cells can be inserted. By means of the pneumatic pressure device assigned to each compartment, a uniform and planar installation for improving the measurement results between the at least one temperature measuring surface of the contacting device and the active side of the pouch cell can be achieved. The workpiece carriers accommodate a plurality of compartments, wherein preferably in the state of contacting device and pouch cell inserted in the upright position an edge region protrudes freely beyond the upper side of the workpiece carrier, which can be connected, for example, via the fork connectors to corresponding connecting lines of power electronics in a forming unit.The invention enables testing of a plurality of pouch cells arranged in a workpiece carrier, for example on a first tray, in each case in contact via the flat contacting device and their connection to power electronics arranged in the forming unit in a level lying above it.Brief Description of the DrawingsEmbodiments of the invention are explained in more detail on the basis of the drawings and the following description.The following are shown: FIG. 1 is a side view of a workpiece carrier with inserted contacting device, FIG. 2 is a plan view of a workpiece carrier with several compartments as well as pneumatically activated pressing devices, FIG. 3 shows a schematically indicated battery cell located outside the workpiece carrier, designed as a pouch cell, FIG. 4 is a top view of a first side of the flat contacting device according to the invention, FIG. 5 shows a sectional view of the contacting device according to FIG. 4, FIG. 5.1 shows a detail of a temperature measuring surface of the contacting device with a temperature sensor arranged at the rear, FIG. 6 shows a perspective view of pouch cells to be contacted with contact lugs, FIG. 7 shows a schematic arrangement of the workpiece carrier with pouch cells and contacting devices located thereon, coupled to power electronics of a forming unit, FIG. 8 shows a schematic illustration of a fitted forming unit, and FIGS. 9.1-9.4 show contacting of one or more pouch cells with only one contacting device (PCB).Embodiments of the InventionIn the following description of the embodiments of the invention, identical or similar elements are denoted by identical reference symbols, wherein a repeated description of these elements is omitted in individual cases. The figures only schematically represent the subject matter of the invention.FIG. 1 shows, by way of example, a workpiece carrier 16, which is reproduced here in a side view. A contacting device 10 is inserted into a compartment of the workpiece carrier 16 according to FIG. 1 in the upright position 88. It can be seen from FIG. 1 that in the inserted state 86 contact surfaces 46 and / or plug connections 48 protrude beyond the workpiece carrier 16.FIG. 2 shows the top view of the workpiece carrier 16, which is shown in FIG. 1 in a side view. It can be seen from the plan view according to FIG. 2 that a first compartment 24, a second compartment 26 and a third compartment 28 are formed in the workpiece carrier 16, so that a plurality of battery cells 12 can be electrically contacted. Battery cells 12, which are designed in particular as pouch cells 14, are inserted into the compartments 24, 26, 28 in the upright position 88, i.e. perpendicular to the plane of the drawing according to FIG. 2. Pouch cells 14 are flexible and comprise either a liquid electrolyte or a solid electrolyte. In the individual compartments 24, 26, 28 of the workpiece carrier 16, pressing bodies 32 are formed on one side, which can be spring-mounted or firmly guided, for example, as plastic components. Located opposite these are pneumatically actuatable pressing devices 22 in the individual compartments 24, 26, 28, which are designed, for example, as pneumatic cushions 23. By means of the pressing devices 22 designed as pneumatic cushions 23, the deformable pouch cells 14 likewise inserted into the individual compartments 24, 26, 28 in the upright position 88 are pressed against the pressing body 32, for example, as shown in connection with the first compartment 24 and the second compartment 26. This results in a particularly uniform, planar contact between a first side 80 (cf. illustration according to FIG. 4 ) of the contacting device 10 on the one hand and an active surface 20 of the pouch cells 14 on the other hand.FIG. 3 shows a battery cell 12 which has not yet been inserted in the form of a pouch cell 14. In the upright position 88, the pouch cell 14 according to FIG. 3 has a relatively flat profile. The pouch cell 14 extends perpendicularly into the plane of the drawing (cf. also illustration of the pouch cells 14 in FIG. 6 ).FIG. 4 shows the top view of a first side 80 of the contacting device 10 according to the invention, which is proposed according to the invention and is embodied very flat in the form of a printed circuit board 36. On the first side, the contacting device 10 has a support surface 38. The support surface 38 is formed with a length 52 corresponding to the length of the pouch cell 14 and a width 54 corresponding to the width of a pouch cell 14, as also shown in FIG. 6. Within the contact surface 38 against which the active surface 20 of the pouch cell 14 abuts in the inserted state 86 of the contacting device 10, a number of temperature measuring surfaces 40 are arranged lying one above the other. Each of the temperature measuring surfaces 40 is embedded in the first side 80 of the contacting device 10 according to the illustration in FIG. 4, so that a surface which is as homogeneous and planar as possible is formed on the first side 80. Above and below the support surface 38 contact lamellae 30 are provided with which contact tabs 34 of the pouch cells 14 are contacted. In one of the edge regions 84 which run next to the contact surface 38, the contact surfaces 46 or plug connections 48 indicated in FIG. 1 are illustrated. In the inserted state 86 of the contacting device 10, namely when it contacts the pouch cell 14 in one of the compartments 24, 26, 28 of the workpiece carrier 16, as shown in FIG. 1, they protrude beyond the workpiece carrier 16.FIG. 5 shows a sectional profile of the contacting device 10 according to the illustration in FIG. 4. As can be seen from FIG. 5, each of the temperature measuring surfaces 40 is provided on its rear side with a temperature sensor 42, for example a PT1000 temperature sensor 40. This is embedded in the material of the contacting device 10, in each case, and lies on the second side 82, i.e. on the rear side of the contacting device 10 designed as a PCB, so that a planar contact surface is established on a boundary wall of the compartment 24, 26, 28 of the workpiece carrier 16.The illustration according to FIG. 5.1 shows a detail of a temperature measuring surface 40, on the rear side of which a temperature sensor 42 is accommodated, which can be a PT1000 temperature sensor 44, for example.The illustration according to FIG. 6 shows perspective views of pouch cells 14. The pouch cells 14 shown in FIG. 6 and shown in a perspective view have the active surface 20 which comes to bear against the first side 80 of the contacting device 10 according to FIG. 4 as soon as both components in one of the compartments 24, 26, 28 are inserted into the workpiece carrier 16 in the upright position 88. Along the width 54 of the pouch cells 14, these have contact lugs 34 which are connected to the contact blades 30 on the first side 80 of the contacting device 10 according to FIG. 4 as soon as the pressing device 22, in particular designed as pneumatic separators 23, is activated. The pouch cells 14 illustrated in a perspective view in FIG. 6 can have a solid electrolyte or else a liquid electrolyte and have limited flexibility. By means of the pressing device 22, preferably designed as a pneumatic cushion 23, uniform contacting of the active surfaces 20 of the pouch cells 14 over as large a surface as possible can be achieved in the inserted state 86.FIG. 7 shows a schematic illustration of the arrangement of a workpiece carrier 16 equipped with a number of battery cells 12 designed as pouch cells 14; these are not illustrated in FIG. 7, but only one of the contacting devices 10 inserted into one of the compartments 24, 26, 28 in the upright position 88, and this is electrically connected to power electronics 50 at the contact surfaces 46 and / or plug connections 48 formed in one of the edge regions 84 via connections formed here as fork connectors 66. The power electronics 50 only indicated in FIG. 7 are located above a carrier plate 58, and the carrier plate 58 delimits a chamber of the forming unit 18, in which said power electronics 50 are located. Below the carrier plate 58 is the workpiece carrier 16 with pairs of pouch cells 14 to be contacted received in its compartments 24, 26, 28 and individual contacting devices 10 assigned to them. According to a travel path 60 in the Z direction and a travel path 62 in the X direction, the workpiece carrier 16 is moved relative to the fork connectors 66 and connected to corresponding connections of the power electronics 50 via power lines and sensor system 64. A mainboard 68 is located in the transmission path of the measured variables. The mainboard combines the forming electronics, the communication and the high-voltage supply. The main board 68 is connected via an external plug connection.FIG. 8 shows a perspective view of a fitted forming unit 18. The drawer or carrier plate 70 is removable from the upper chamber of the forming unit 18. The same applies to a workpiece carrier 72 which is arranged below the drawer or carrier plate 70. The workpiece carrier 72 is provided with a number of battery cells 12 into which individual pairs of contacting devices 10 and pouch cells 14 to be contacted are inserted. These respective pairs of contacting devices 10 and pouch cells 14 are electrically connected via electrical contacts 74 to the power electronics 50 located above them, which are accommodated in the drawer or carrier plate 70. The workpiece carrier 72 with the battery cells 12 is lowered and pulled out. The opening 78 is provided for maintenance of safety technology and the like. The power electronics 50 provided for forming together with the mainboard 68 and the drawer or carrier plate 70 are likewise pushed out directly. The forming unit 18 according to the schematic illustration in FIG. 8 accordingly comprises power electronics 50 accommodated on the drawer or carrier plate 70 and pouch cells 14 electrically connected to each of the power electronics 50 and contact-making devices 10.The method proposed according to the invention for contacting battery cells 12, in particular pouch cells 14, which contain a liquid or solid electrolyte and are contacted by means of the contacting device 10, comprises the following method steps: a) inserting a contacting device 10 and a pouch cell 14 in each case in the upright position 88 into a compartment 24, 26, 28 of the workpiece carrier 16, b) producing a contact between the active side 20 of the pouch cell 14 and at least one temperature measuring surface 40 of the contacting device 10 by pneumatic application of a pressing device 22 which is accommodated in each of the compartments 24, 26, 28, c) Sensing pressure and / or temperature on the active side 20 of the pouch cells 14 and d) Transmitting the sensed measured variables via an electrical contact 74 by means of at least one fork connector 66 or a plug connector to a main board 68 of the power electronics 50 of the forming unit 18.By means of the method proposed according to the invention, the temperature of the pouch cells 14 can be determined at a plurality of points, corresponding to the number of temperature measurement surfaces 40 present on the contacting device 10.The invention furthermore relates to the use of the contacting device 10 for detecting parameters, such as the temperature or pressure of a battery cell 12, in particular a pouch cell 14, and for transmitting the parameters to a power electronics 50.FIGS. 9.1 to 9.4 show contacting of one or more pouch cells 14 with only one contacting device 10 (PCB).It can be seen from the sequence of figures of FIGS. 9.1 to 9.4 that two battery cells 12 designed as pouch cells 14 can be contacted, for example, on their first side 80 with the contacting device 10 designed as a PCB proposed according to the invention. The respective contact lugs 34 of the two pouch cells 14 applied to the first side 80 of the contacting device 10 are contacted via contacting lamellae 30 covered by the latter. Said contact surfaces 46 and plug connections 48 are laterally located on the first side 80 of the contacting device 10, so that the contacting device 10 can be electrically contacted by the fork connectors 66 in its edgewise position 88 (cf. illustration according to FIG. 7 ). FIG. 9.2 shows the top view of the contacting device 10, which substantially corresponds to the representation of the contacting device 10 according to FIG. 4. In the illustration according to FIG. 9.3, a battery cell 12 designed as a pouch cell 14 is applied to the first side 80 of the contacting device 10 designed as a PCB. Their contact lugs 34 contact the contact blades 30 of the contact device 10 shown in FIG. 9.2, and it can be seen from the illustration according to FIG. 9.4 that a battery cell 12 designed as a pouch cell 14 can be contacted on its first side 80 and its second side 82 by means of the same contact device 10 designed as a PCB. This enables simultaneous contacting of a plurality of pouch cells 14, for example of smaller design, according to FIG. 9.1 and thus further cost and space savings, since two pouch cells 14 per compartment 24, 26, 28 (cf. illustration according to FIG. 2 ) can be contacted simultaneously.The invention is not limited to the exemplary embodiments described here and the aspects emphasized therein. Rather, within the scope of the claims, a variety of modifications are possible, which are within the scope of specialist activity.References included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 10 2014 208 225 A1

[0002] WO 2018 / 162719 A1

[0003] WO 2020 / 239927 A1

[0004]

Claims

Contacting device (10) for battery cells (12), in particular pouch cells (14), which can be placed against the contacting device (10) by means of a pressing device (22) and at least one pouch cell (14) is electrically contacted, characterized in that the contacting device (10) is substantially designed as a flat printed circuit board (36) and which has at least one temperature measuring surface (40) and at least one temperature sensor (42) opposite the latter.Contacting device (10) according to claim 1, characterised in that the at least one temperature measuring surface (40) is embedded within a support region (38) for the pouch cell (14) in a first side (80) of the contacting device (10).Contacting device (10) according to claims 1 and 2, characterized in that the at least one temperature sensor (42) associated with the at least one temperature measuring surface (40) is arranged on a second side (82) of the contacting device (10).Contacting device (10) according to claims 1 to 3, characterised in that the at least one temperature sensor (42) is designed as a PT100, PT1000 or as an NTC temperature sensor (44).Contacting device (10) according to claims 1 to 4, characterised in that the support region (38) on the first side (80) of the contacting device (10) corresponds to dimensions (52, 54) of the pouch cell (14).Contacting device (10) according to claims 1 to 5, characterised in that edge regions (84) run on both sides of the support region (38), within which contact surfaces (46) and / or plug connections (48) are arranged.Contacting device (10) according to claims 1 to 6, characterised in that the contacting device (10) inserted into the workpiece carrier (16) can be electrically contacted via contact surfaces (46) or plug connections (48) protruding from the workpiece carrier (16).Contacting device (10) according to claims 1 to 7, characterised in that contact lamellae (30) assigned to the support region (38) of the pouch cell (14) are arranged on the first side (80) of the contacting device (10), which contact at least one contact lug (34) of the pouch cell (14).Contacting device (10) according to claims 1 to 8, characterised in that the at least one temperature measuring surface (40) contains copper or gold and / or comprises a coating of aluminium.Workpiece carrier (16) for receiving battery cells (12), in particular pouch cells (14), having a number of compartments (24, 26, 28) into which a pouch cell (14) can be inserted in each case, characterized in that the compartments (24, 26, 28) each have a pressing surface (32) and, opposite the latter, a pneumatic pressing device (22), in particular designed as a pneumatic cushion (23).Workpiece carrier (16) according to claim 10, characterised in that a contacting device (10) and a pouch cell (14) are inserted on edge into each of the compartments (24, 26, 28).Workpiece carrier (16) according to claims 10 and 11, characterised in that in the state (86) inserted into a compartment (24, 26, 28) an active surface (20) of the pouch cell (14) and the first side (80) of the contacting device (10) comprising the at least one temperature measuring surface (40) face each other.Workpiece carrier (16) according to claims 10 to 12, characterised in that in the inserted state (86) the pouch cell (14) and the contacting device (10) are set against each other by means of the pneumatic pressing device (22).Workpiece carrier (16) according to claims 10 to 13, characterised in that the pressing bodies (32) assigned to each of the compartments (24, 26, 28) are spring-mounted therein and are firmly guided.Forming unit (18) having at least one power electronics (50) and at least one workpiece carrier (16) according to claims 11 to 14 electrically connected thereto, in which a number of pouch cells (14) are accommodated, which are each contacted via a contacting device (10) according to one of claims 1 to 9.Method for contacting battery cells (12), in particular pouch cells (14), with a liquid or solid electrolyte by means of a contacting device (10) according to one of Claims 1 to 9 and a workpiece carrier (16) according to one of Claims 10 to 14, having the following method steps: a) inserting a contacting device (10) and a pouch cell (14) in the upright position (88) into a compartment (24, 26, 28) of the workpiece carrier (16), b) producing a contact between an active side (20) of the pouch cell (14) and at least one temperature measuring surface (40) of the contacting device (10) by pneumatic application of a pressing device (22), c) detecting pressure and / or temperature on the active side (20) of the pouch cell (14), d) Transmission of the detected measured variables via an electrical contact (74) by means of at least one fork connector (66) or plug connector to a main board (68) of a power electronics (50).Method according to claim 16, characterised in that the temperature of the pouch cells (14) is determined at a plurality of points in accordance with the number of temperature measurement surfaces (40) present on the contacting device (10).Use of the contacting device (10) according to claims 1 to 9 for detecting parameters of a battery cell (12), in particular a pouch cell (14), and transmitting the parameters to power electronics (50) of a forming unit (18).

Images