DE102017212258A1 - Battery cell assembly - Google Patents

Abstract

The invention relates to a battery cell arrangement (1) with a plurality of individual cells (2), in particular with a plurality of pouch cells. In this case, the plurality of individual cells (2) in a stacking direction (3) are arranged adjacent to each other to a stack (4) and current conductors (6a, 6b) of electrical poles of the plurality of individual cells (2) extend perpendicular to the stacking direction (3). Furthermore, the current conductors (6a, 6b) each have an under 90 ° angled contacting region (7a, 7b). The current conductors (6a, 6b) of the plurality of individual cells (2) are electrically conductively connected to the respective contacting region (7a, 7b) on each pole side at least one contacting plate (8, 8a, 8b) arranged along the stacking direction (3).
According to the invention, the contacting regions (7a, 7b) of the current conductors (6a, 6b) fixed on the respective contacting plate (8, 8a, 8b) are angled in an identical bending direction (9a, 9b).
The invention also relates to a method for producing the battery cell arrangement (1).

Description

The invention relates to a battery cell arrangement with a plurality of individual cells and in particular with a plurality of pouch cells according to the preamble of claim 1. The invention also relates to a method for producing the battery cell arrangement.

A pouch cell does not have a fixed housing compared to other battery cells, whereby the weight of a battery cell assembly can be reduced with the Pouch cells and the dimensions can be varied within a wide range. In a battery cell arrangement with a plurality of pouch cells, these are arranged adjacent to one another in a stack and connected in parallel and / or in series with one another by current conductors.

Some methods for contacting the individual pouch cells with one another are already known from the prior art. For example, describes DE 10 2008 034 867 A1 a battery cell assembly having a plurality of pouch cells contacted with each other. The pouch cells are alternately arranged rotated in the stack by 180 ° to each other, so that the respective adjacent current conductors of the pouch cells are poled differently. The current conductors are then threaded through slot-shaped recesses of a holding frame and angled by 90 ° and directed in pairs to each other. Subsequently, the current conductors are also welded together in pairs and contacted in this way.

DE 10 2010 013 023 A1 describes a further solution for contacting the individual pouch cells, in which the current conductors of the adjacent pouch cells are angled at 90 ° and directed in pairs to each other and fixed in pairs by means of a clamping device to each other electrically conductive. In DE 10 2010 050 993 A1 a similar method of contacting is described. Here, the current conductors of the adjacent Pouch cells are clamped together in pairs by a respective clamping device and so electrically interconnected, but the current conductors are not angled.

In the conventional methods, either a complicated threading through the current conductor by a holding frame or a complex pairwise jamming of the current collector must be made together. Conventional contacting of the pouch cells is thus very complex and time consuming.

The object of the invention is therefore to provide an improved or at least alternative embodiment for a battery cell arrangement of the generic type, in which a Kontaktierungsaufwand is reduced. Another object of the invention is to provide an improved or at least alternative method of contacting.

This object is achieved by the subject matter of the independent claims. Advantageous embodiments are the subject of the dependent claims.

The present invention is based on the general idea of first producing a same contacting situation for each of the several individual cells in a battery cell arrangement having a plurality of individual cells and in particular having a plurality of pouch cells and thereby reducing the contacting effort in the battery cell arrangement. In the battery cell assembly having a plurality of single cells, these are arranged in a stacking direction adjacent to each other to form a stack. Current conductors of the electric poles of the plurality of individual cells extend perpendicular to the stacking direction and each have an angled under 90 ° contact area. The current conductors of the plurality of individual cells are electrically conductively fixed to the pole side of the respective contacting region on at least one contacting plate arranged along the stacking direction. According to the invention, the contacting regions of the current conductors fixed on the respective contacting plate are angled in an identical bending direction.

By the same Abwinklungsrichtung a similar Kontaktierungssituation is prepared on the respective contact plate for each of the individual cells, so that the contacting effort is significantly reduced. The current conductors which are angled in the same bending direction form a planar contacting area which is parallel to the stacking direction and bears against the respective contacting plate. The individual contacting regions can also be arranged on the contacting surface not overlapping, wherein the contacting plate is then suitably electrically conductive and consists for example of copper or aluminum or of an aluminum alloy or of another electrically conductive material. The individual current conductors on the respective electrically conductive contacting plate are consequently electrically interconnected by the contacting plate.

In the battery cell arrangement according to the invention, for example, the differently polarized current conductors of two individual cells adjacent to each other in the stack can be fixed on the respective contacting plate. In this way, the two single cells are connected in series with each other. Advantageously, the single cells in the inventive Battery cell arrangement not only in pairs, but also reduced in single cell groups of several parallel interconnected individual cells and simplified interconnected. Thus, two individual cell groups - for example, each of three individual cells - can be set on the respective contacting plate. If the individual cells of the respective single cell group with the same-polarity current conductors and the two single cell groups with the differently polarized current conductors are fixed on the contacting plate, then the individual cells in the respective single cell group are parallel and the two single cell groups are connected in series with each other. Advantageously, the contacting effort remains constant regardless of the number of individual cells in the individual cell groups, since a same contacting situation is established for each of the individual cells.

Overall, in the battery cell arrangement according to the invention, the contacting of the individual cells can be simplified and reduced in terms of expenditure. Furthermore, the individual cells in the stack can also be connected in series and / or in parallel without an additional contacting effort being required.

In an advantageous development of the battery cell arrangement according to the invention, it is provided that the current conductors are fixed in a material-locking manner on a connection side of the respective contacting plate facing the stack. In this way, the individual cells of the battery cell arrangement can be connected to one another in a simplified and reduced manner with each other in series and / or in parallel. In particular, this eliminates a conventionally necessary complex threading of the current collector through the contacting plate and the contacting effort is considerably reduced. The current collector can be determined for example by ultrasonic welding or by laser welding on the contacting plate. In particular, the contact resistance between the current conductor and the contacting plate can be reduced and a permanent connection can be achieved by the cohesive setting of the current conductor on the contacting plate.

In order to simplify the cohesive fixing of the current conductors on the contacting plate and thereby reduce the contacting effort, it is advantageously provided that the respective contacting plate has at least one adhesion layer on the connection side and that at least one of the current conductors on the adhesion layer is fixed cohesively. The adhesive layer is suitably made of a material that can be permanently and easily connected to the material of the current conductor. Advantageously, the contacting regions of the individual current conductors fixed on the respective contacting plate do not overlap and the material of the adhesion layer can be adapted to the usually different material of the differently polarized current conductors. In order to prevent corrosion of the adhesion layer, a protective layer may advantageously be arranged on the adhesion layer.

It is advantageously provided that the adhesion layer and the at least one current conductor fixed on the adhesion layer consist of the same material. In this way, a permanent and secure connection of the current collector with the adhesion layer and consequently with the contacting plate can be achieved. Furthermore, it can also reduce the contact resistance between the adhesion layer and the current conductor. Thus, for example, the adhesion layer for the respective current conductor of the negative pole - usually of copper - made of copper and the adhesion layer for the respective current conductor of the positive pole - usually made of graphite - consist of graphite. Alternatively or additionally, it is provided that a thickness of the adhesion layer is substantially equal to a thickness of the at least one current conductor. This is to be understood that the thickness of the adhesion layer is of the same order of magnitude as the thickness of the at least one current conductor. As a result, the cohesive fixing of the current conductor on the adhesion layer can be simplified.

In a particularly advantageous development of the battery cell arrangement according to the invention, provision is made for the contacting plate to have at least one penetrating fixing opening, on which the at least one contacting region contacting the contacting plate is arranged. In this case, the at least one current conductor is fixed cohesively on the adhesion layer by the at least one fixing opening. In this case, the adhesion layer expediently covers the continuous fixing opening, so that the contacting region of the respective current conductor resting on the adhesion layer is fixed by the continuous fixing opening in the contacting plate, for example by ultrasonic welding or by laser welding. This eliminates a conventionally necessary complex threading of the current collector through the contacting plate and the current collector can be reduced effort on the connection side of the contacting plate and easily fixed cohesively. Furthermore, the respective contacting regions can be fixed by a support side of the contacting plate which is opposite the connection side, whereby the contacting effort can be considerably reduced and the individual cells of the battery cell arrangement can be protected in the cohesive fixing.

Advantageously, it is further provided that the contacting plate has a plurality of Festlegöffnungen which are arranged along the at least one voltage applied to the contacting plate contacting region. In this way, the respective current conductor can be fixed in several places on the contacting plate, whereby the contact resistance between the current collector and the adhesion layer can be reduced. The respective Festlegöffnungen can arbitrarily - for example, elongated, circular or slit - be configured. Alternatively or additionally, the at least one fixing opening can extend along the at least one contact region which bears against the contacting plate. The respective current conductor is then firmly bonded along the entire contact area and the contact resistance between the current conductor and the adhesion layer is advantageously reduced. It is also possible for a plurality of fixing openings to extend along the individual contacting region, so that the respective current conductor is fixed at several locations on the adhesion layer. Again, the respective Festlegöffnungen can arbitrarily - for example, elongated or slit - be configured.

In order to be able to support the stack-in particular from flexible pouch cells-in the battery cell arrangement, it is advantageously provided that a support arrangement is arranged between the stack and the respective contacting plate against the stack and against the contacting plate. The support arrangement in this case has a plurality of individual support units, which are elongated and arranged between the adjacent current conductors perpendicular to the stacking direction on the respective contacting plate. The support arrangement can be designed in one piece as well as in several parts. In the one-piece support arrangement, the individual support units are fixed on one or both sides on a support side unit or formed integrally thereon and thus form a support surface with a plurality of slots for the respective current conductor. Alternatively, in the multi-part support arrangement, the support units can be individually fixed, for example, on the contacting plate or on a frame. By means of the support arrangement, the stack can be supported in the battery cell arrangement, so that the individual cells in the stack are better protected from mechanical damage.

In a further embodiment of the support arrangement is advantageously provided that the support arrangement has at least one and preferably elastic molding, which corresponds to the respective Festlegöffnung in the contacting plate. The preferred elastic formation is suitably applied to the contacting region of the respective current conductor and compresses the adhesion layer and the current conductor at the Festlegöffnung in the contacting plate. In this way, in the cohesive setting of the current collector on the adhesion layer through the Festlegöffnung through a contact of the current conductor are provided with the adhesion layer secures and a permanent and secure connection of the current conductor are achieved with the adhesion layer.

It is advantageously provided that the support arrangement has a channel arrangement with at least one cooling channel through which a coolant can flow. The cooling channels can be arranged, for example, in the support units of the support arrangement and the heat generated at the current conductors can be dissipated by the support arrangement. Advantageously, this allows the battery cell arrangement to be cooled better and also made more compact.

In order to improve the current carrying capacity of the battery cell arrangement, it is advantageously provided that at least one electrically conductive additional layer is fixed on the support side of the contacting plate opposite the connection side. The material and the dimensions of the at least one additional layer are adapted to the desired current carrying capacity of the contacting plate and the contact resistance between the additional layer and the contacting plate as well as multiple layers even under the individual additional layers remains low. The material and the dimensions of the one or more additional layers may be adapted to the desired current carrying capacity of the contacting plate. Thus, for example, with a small current flowing in the battery cell arrangement, the number of additional layers and / or their dimensions can be reduced. With a high current flowing in the battery cell arrangement, the number of additional layers and / or the dimensions of the additional layers can be increased. In this way, the material can be saved in the battery cell assembly and thereby the cost of the battery cell assembly can be reduced. The contact resistance between the individual additional layers and between the additional layers and the contacting plate is low in order to reduce unwanted heat development in the at least one additional layer and in the contacting plate.

Advantageously, it is further provided that an electrically conductive connecting layer is fixed on the support sides of the respective two pole side adjacent contacting plates, which connects the adjacent contacting plates electrically conductive. Through the connection layer are the individual contacting plates pole side electrically connected to each other and the individual cells in the battery cell array connected in parallel and / or series electrically. The material and the dimensions of the connection layer are adapted to the current carrying capacity of the battery cell assembly. The material of the connecting layer is chosen so that the contact resistance remains low and the unwanted heat development in the connecting layer and in the contacting plate is reduced.

In order to facilitate the simplified contacting of the respective current conductors with the adhesion layer, it is advantageously provided that the additional layer and / or the connection layer each have at least one continuous additional opening which corresponds to the at least one fixing opening in the contacting plate. Thus, the voltage applied to the adhesion layer contacting region of the respective current conductor can be defined by the continuous Festlegöffnung in the contacting plate and by an additional opening or through a plurality of additional openings therethrough.

For stiffening the battery cell arrangement, in particular from flexible pouch cells, it is provided that the contacting plates are each arranged in a frame on the pole side. The respective frame is preferably made of a plastic and is electrically insulating. Through the respective frame, the contacting plates to the outside and the pole side adjacent contacting plates can also be electrically insulated from each other. The contacting plates can be non-positively fixed in the respective frame - for example, clamped - or form-fitting - for example, by molding.

In a development of the battery cell arrangement, it is provided that a heat dissipation arrangement is arranged on the support side of the respective contacting plate. The heat dissipation arrangement can, for example, be a plate or a heat dissipation structure made of a heat-conducting material or, preferably, a cooling arrangement with at least one cooling channel through which a coolant can flow. The heat dissipation arrangement can be arranged on the support side of the contacting plate or on the frame of the battery cell assembly adjacent and thermally conductive.

Overall, in the battery cell arrangement according to the invention a similar contacting situation is established for each of the several individual cells, thereby significantly reducing the contacting effort at first. By further advantageous embodiments of the battery cell arrangement, the contacting of the individual cells in the battery cell arrangement is significantly simplified and the contacting effort is further reduced.

The invention also relates to a method for producing a battery cell arrangement described above. Generically, a plurality of individual cells are first arranged adjacent to one another in a stack. Thereafter, or before, the respective current conductor is angled at 90 ° and formed along the stacking direction extending contacting region of the respective Stromableiters. The respective current conductors are then electrically connected to the respective contact areas on each pole on at least one contacting plate arranged along the stacking direction. According to the invention, the contacting regions of the current conductors fixed on the respective contacting plate are angled in a same bending direction. In this way, a similar contacting situation is produced in the battery cell arrangement on the respective contacting plate for each of the individual cells, thereby considerably reducing the contacting effort.

Advantageously, it is provided that the current conductors are fixed cohesively on a connecting side of the contacting plate facing the stack. In this case, in particular, a conventionally necessary complicated threading of the current collector through the contacting plate, whereby the contacting effort is considerably reduced.

In order to simplify the setting of the respective current conductors on the connection side of the contacting plate, it is provided that at least one adhesion layer is applied to the connection side of the respective contacting plate and that at least one of the contacting regions is firmly bonded on the adhesion layer. The adhesion layer and the respective current conductor may be made of a same material having the same thickness.

In a particularly advantageous development of the method according to the invention, it is provided that at least one penetrating fixing opening is arranged on the contacting plate on the at least one contacting region contacting the contacting plate and that the respective current conductor on the adhesion layer is cohesively fixed by the at least one fastening opening. In this case, the current conductor on the adhesion layer is preferably determined by ultrasonic welding or by laser welding. In this way, the contacting can be made through the Festlegöffnung, which advantageously the contacting effort is significantly reduced. The each Festlegöffnung can arbitrarily - for example, elongated, circular or slit - be configured. Advantageously, a plurality of fixing openings can be arranged along the contacting region of the respective current collector or, however, a single fixing opening can extend along the contacting region, for example like a slit. In particular, the contact area on the adhesion layer can thereby be determined more securely and permanently.

Furthermore, it is advantageously provided that a support arrangement with at least one and preferably elastic molding is arranged at the corresponding fixing opening and that the contacting region of the respective current conductor is thereby printed together with the adhesion layer. As a result, a contact between the contacting region and the adhesion layer can be secured during the cohesive setting and a secure and permanent connection between the current conductor and the adhesion layer can be achieved.

Overall, the Kontaktierungsaufwand in the method according to the invention and thereby the overall cost of the battery cell assembly are significantly reduced.

Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

• 1 und 2 Ansichten einer erfindungsgemäßen Batteriezellenanordnung mit mehreren auf einer Kontaktierungsplatte festgelegten Einzelzellen;
• 3 und 4 Ansichten einer erfindungsgemäßen Batteriezellenanordnung, bei der zwei benachbarte Kontaktierungsplatten durch eine Verbindungsschicht elektrisch leitend verbunden sind;
• 5 und 6 Ansichten einer erfindungsgemäßen Batteriezellenanordnung mit einer Kanalanordnung und mit einer Wärmeableitungsanordnung;
• 7 und 8 Ansichten einer erfindungsgemäßen Batteriezellenanordnung in Rahmen.

It show, each schematically

• 1 and 2 Views of a battery cell arrangement according to the invention with a plurality of individual cells fixed on a contacting plate;
• 3 and 4 Views of a battery cell arrangement according to the invention, in which two adjacent contacting plates are electrically connected by a connecting layer;
• 5 and 6 View of a battery cell arrangement according to the invention with a channel arrangement and with a heat dissipation arrangement;
• 7 and 8th Views of a battery cell assembly according to the invention in frame.

1 and 2 each show a plan view and a side view of a battery cell arrangement according to the invention 1 , The battery cell assembly 1 has several single cells 2 up in a stacking direction 3 abutting each other to a pile 4 arranged and in the stacking direction 3 each through an insulating layer 5 are electrically isolated from each other. Each of the single cells 2 in the pile 4 each has a negative pole current conductor 6a and a positive-pole current collector 6b on, which are perpendicular to the stacking direction 3 extend. The current collector 6a and 6b of the single cells 2 each have an under 90 ° angled contacting area 7a and 7b on and are with the appropriate contact area 7a or 7b on a contacting plate 8th set electrically conductive. The contacting plate 8th is along the stacking direction 3 arranged and the respective contacting areas 7a and 7b are pole side in a common Anwinklungsrichtung 9a or 9b angled. For each of the single cells 2 on the contacting plate 8th As a result, a same contacting situation is produced and the contacting effort is considerably reduced.

The individual contact areas 7a and 7b on the contacting plate 8th do not overlap and are through the electrically conductive contacting plate 8th electrically connected to each other. In this embodiment, the single cells are 2 on the contacting plate 8th into a first single cell group 10a and into a second single cell group 10b divided. The single cells 2 the first single cell group 10a are with the negative pole current conductors 6a and the single cells 2 the second single cell group 10b are with the positive-pole current conductors 6b at the contacting plate 8th established. In this way, through the contacting plate 8th the single cells 2 in the two single cell groups 10a and 10b parallel and the two single cell groups 10a and 10b be connected in series with each other.

The current collector 6a and 6b are on a pile 4 facing connection side 11 the contacting plate 8th cohesively determined. In this way, a conventionally necessary threading through the current conductor 6a and 6b through the contacting plate 8th avoided and reduced the Kontaktierungsaufwand. The contacting plate 8th has a negative pole connection layer 12a and a positive connection layer 12b on which, accordingly, the negative-pole current collector 6a and the positive-pole current collector 6b are fixed. The layers of liability 12a and 12b consist of a same material with the negative pole current conductors 6a or with the positive-pole current conductors 6b , In this way, a permanent and safe connection of the current collector 6a and 6b with the respective layer of liability 12a and 12b be achieved. Furthermore, thereby also the contact resistance between the respective adhesion layer 12a and 12b and the respective current conductor 6a or 6b be reduced. The layers of liability 12a and 12b as well as the current collector 6a and 6b are also the same thickness, so that the cohesive fixing of the respective Stromableiters 6a or 6b on the adhesion layer 12a or 12b is simplified.

The contacting plate 8th also has several fixing openings 13 on, like in 2 you can see. The layers of liability bridge over 12a and 12b the fixing openings 13 so that the contacting areas 7a and 7b the respective current conductor 6a and 6b through the fixing holes 13 can be determined by ultrasonic welding or by laser welding. In this way, the current collector 6a and 6b at the contacting plate 8th Reduced effort and time-saving. In this embodiment, more of the Festlegöffnungen 13 in each case along the respective contacting region 7a or 7b arranged so that the respective current conductor 6a or 6b in several places on the contacting plate 8th can be determined. This allows the contact resistance between the current conductor 6a or 6b and the corresponding layer of adhesion 12a or 12b be reduced.

To the pile 4 in the battery cell assembly 1 is between the pile 4 and the contacting plate 8th a support arrangement 14 arranged. The support arrangement 14 lies on one side of the stack 4 and on the other side of the contacting plate 8th at. The support arrangement 14 has several individual support units 14a on that between the neighboring current conductors 6a and 6b perpendicular to the stacking direction 3 are arranged. The support arrangement 14 supports the pile 4 in the battery cell assembly 1 and protects the individual cells 2 of mechanical damage. The support arrangement 14 also has several elastic shapes 14b on that with the fixing holes 13 in the contacting plate 8th correspond. In the cohesive setting press the elastic formations 14b the current conductor 6a or 6b to the adhesion layer 12a or 12b at the respective Festlegöffnung 13 so that a contact of the current conductor 6a or 6b with the adhesion layer 12a or 12b is secured. In this advantageous manner, contacting errors can be avoided.

For stiffening the battery cell assembly 1 this also has a frame 15 on, on one of the connecting side opposite support side 16 the contacting plate 8th is arranged. The frame 15 consists of a plastic material and insulates the contacting plate 8th electrically outward. The contacting plate 8th can in the frame 15 for example, be clamped or determined by overmolding. On the frame 15 is also a heat dissipation structure 17 with a cooling arrangement 17a arranged through which the in the contacting plate 8th generated heat can be dissipated.

3 and 4 each show a plan view and a side view of the battery cell arrangement according to the invention 1 with the two pole side adjacent contacting plates 8a and 8b , On the contacting plate 8a are the negative pole current conductors 6a and on the contacting plate 8b are the positive-pole current conductors 6b established. The two contacting plates 8a and 8b each have an additional layer 18a and 18b on, by the current carrying capacity of the battery cell assembly 1 is improved. The material as well as the dimensions of the additional layers 18a and 18b are to the desired current carrying capacity of the contacting plate 1 customized. In addition, the contact resistance between the additional layers 18a and 18b and the corresponding contacting plate 8a or 8b kept low. The contacting plates 8a and 8b are at the extra layers 18a and 18b by means of a bonding layer 19 electrically connected to each other, so that the contacting plates 8a and 8b together one of the contacting plate 8th in 1 and in 2 have identical mode of action. Furthermore, both the additional layers 18a and 18b as well as the connection layer 19 several with the fixing holes 13 in the contacting plate 8th corresponding additional openings 20 on, like in 4 you can see. So can the respective contact area 7a or 7b of the respective current conductor 6a or 6b through the continuous fixing openings 13 and through the additional openings 20 for example, by ultrasonic welding or laser welding on the respective adhesion layer 12a or 12b be determined.

5 and 6 each show a plan view and a side view of the battery cell arrangement according to the invention 1 with the heat dissipation arrangement 17 , The heat dissipation arrangement 17 has a heat dissipation structure in this embodiment 17b on, on the support side 16 the contacting plate 8th is applied. By the heat dissipation arrangement 17 may be advantageous in the contacting plate 8th , in the additional layers 18a and 18b as well as in the tie layer 19 generated heat to be dissipated. In addition, the support arrangement 14 a channel arrangement 21 with several through a coolant flow-through cooling channels 21a on that in the support units 14a the support arrangement 14 are arranged.

7 and 8th each show a plan view and a side view of the battery cell arrangement according to the invention 1 with the several contacting plates 8th , The contacting plates 8th are pole side respectively in the frame 15 arranged and the battery cell assembly 1 stiffened by it. At the respective frame 15 is in each case the cooling arrangement 17a arranged. Through the several contacting plates 8th are the single cells 2 the battery cell assembly 1 in the respective single cell groups 10a or 10b parallel and the respective single cell groups 10a and 10b connected in series with each other. The current collector 6a and 6b of the single cells 2 are pole-side in the same direction of bending 9a or 9b angled so that for each of the single cells 2 pole side a same Kontaktierungssituation is made and the Kontaktierungsaufwand is significantly reduced.

Overall, in the battery cell arrangement according to the invention 1 for each of the several single cells 2 made a same Kontaktierungssituation and significantly reduces the Kontaktierungsaufwand. Further advantageous embodiments of the battery cell arrangement 1 allow a simplified and time-reduced contacting of the individual cells 2 in the battery cell assembly 1 ,

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008034867 A1 [0003]
• DE 102010013023 A1 [0004]
• DE 102010050993 A1 [0004]

Claims (20)

Battery cell arrangement (1) with a plurality of individual cells (2), in particular with a plurality of pouch cells, - wherein the plurality of individual cells (2) in a stacking direction (3) adjacent to a stack (4) are arranged, - wherein current conductor (6a, 6b ) electrical poles of the plurality of individual cells (2) extend perpendicular to the stacking direction (3), - wherein the current conductors (6a, 6b) each have a 90 ° angled contacting region (7a, 7b), - wherein the current conductors (6a, 6b) the plurality of individual cells (2) with the corresponding contacting region (7a, 7b) are each electrically conductively connected to at least one contacting plate (8, 8a, 8b) arranged along the stacking direction (3), characterized in that - the contacting regions (7a, 7b) of the on the respective contacting plate (8, 8a, 8b) fixed current conductor (6a, 6b) are angled in a same bending direction (9a, 9b). Battery cell arrangement according to Claim 1 , characterized in that the current conductors (6a, 6b) on a stack (4) facing the connecting side (11) of the respective contacting plate (8, 8a, 8b) are fixed cohesively. Battery cell arrangement according to Claim 2 in that - the respective contacting plate (8, 8a, 8b) has at least one adhesion layer (12a, 12b) on the connection side (11), and - at least one of the current conductors (6a, 6b) on the adhesion layer (12a, 12b) is fixed cohesively. Battery cell arrangement according to Claim 3 , characterized in that a protective layer is arranged on the adhesion layer (12a, 12b). Battery cell arrangement according to Claim 3 or 4 in that - the adhesion layer (12a, 12b) and the at least one current conductor (6a, 6b) fixed on the adhesion layer (12a, 12b) consist of a same material, and / or - that a thickness of the adhesion layer (12a, 12b) is substantially the same thickness of the at least one Stromableiters (6a, 6b) is equal. Battery cell arrangement according to one of Claims 3 to 5 in that - the contacting plate (8, 8a, 8b) has at least one penetrating fixing opening (12) on which the at least one contacting region (7a, 7b) resting against the contacting plate (8, 8a, 8b) is arranged, and - That the at least one current collector (6a, 6b) on the adhesion layer (12a, 12b) by the at least one Festlegöffnung (13) is fixed cohesively. Battery cell arrangement according to Claim 6 in that - the contacting plate (8, 8a, 8b) has a plurality of fixing openings (13) which are arranged along the at least one contact region (7a, 7b) resting against the contacting plate (8, 8a, 8b), and / or - That the at least one Festlegöffnung (13) along the at least one of the contacting plate (8, 8a, 8b) adjacent contacting region (7a, 7b) extends. Battery cell arrangement according to one of the preceding claims, characterized in that a support arrangement (14) between the stack (4) and the respective contacting plate (8, 8a, 8b) on the stack (4) and on the contacting plate (8, 8a, 8b) is arranged adjacent. Battery cell arrangement according to Claim 8 , characterized in that the supporting arrangement (14) has at least one and preferably elastic formation (14b) which corresponds to the respective fixing opening (13) in the contacting plate (8, 8a, 8b). Battery cell arrangement according to Claim 8 or 9 , characterized in that the support arrangement (14) has a channel arrangement (21) with at least one cooling channel (21a) through which a coolant can flow. Battery cell arrangement according to one of the preceding claims, characterized in that at least one electrically conductive additional layer (18a, 18b) is fixed on one of the connecting side (11) opposite support side (16) of the contacting plate (8, 8a, 8b). Battery cell arrangement according to one of the preceding claims, characterized in that on the support sides (16) of each two pole side adjacent contacting plates (8, 8a, 8b) an electrically conductive connection layer (19) is fixed, the adjacent contacting plates (8a, 8b) electrically conductively connects. Battery cell arrangement according to Claim 11 or 12 , characterized in that the additional layer (18a, 18b) and / or the connecting layer (19) in each case at least one continuous additional opening (20), with the at least a Festlegöffnung (13) in the contacting plate (8, 8a, 8b) corresponds. Battery cell arrangement according to one of the preceding claims, characterized in that the contacting plates (8, 8a, 8b) on the pole side in each case in a frame (15), preferably made of a plastic, are arranged. Battery cell arrangement according to one of the preceding claims, characterized in that a heat dissipation arrangement (17), preferably with a cooling arrangement (17a), is arranged on the support side (16) of the respective contacting plate (8, 8a, 8b). Method for producing a battery cell arrangement according to one of Claims 1 to 15 - wherein a plurality of individual cells (2) are arranged adjacent to one another to a stack (4), - wherein the respective current conductors (6a, 6b) are each angled at 90 ° and so along the stacking direction (3) extending contacting region (7a, 7b) of the respective current conductor (6a, 6b), wherein the respective current conductors (6a, 6b) with the corresponding contacting regions (7a, 7b) on the pole side respectively on at least one along the stacking direction (3) arranged contacting plate (8, 8a, 8b) are fixed in an electrically conductive manner, characterized in that - the contacting regions (7a, 7b) of the current conductors (6a, 6b) fixed on the respective contacting plate (8, 8a, 8b) are angled in an identical bending direction (9a, 9b). Method according to Claim 16 , characterized in that the current conductors (6a, 6b) on a stack (4) facing the connecting side (11) of the contacting plate (8, 8a, 8b) are fixed cohesively. Method according to Claim 17 in that - at least one adhesion layer (12a, 12b) is applied to the connection side (11) of the respective contacting plate (8, 8a, 8b), and - at least one of the contacting regions (7a, 7b) on the adhesion layer (12a, 12b) is fixed cohesively. Method according to Claim 18 in that - at least one penetrating fixing opening (13) is arranged on the contacting plate (8, 8a, 8b) on the at least one contacting area (7a, 7b) resting against the contacting plate (8, 8a, 8b); respective current conductor (6a, 6b) on the adhesion layer (12a, 12b) by the at least one Festlegöffnung (13) through a material fit, preferably by ultrasonic welding or by laser welding, is set. Method according to Claim 19 , characterized in that - a support arrangement (14) with at least one and preferably elastic formation (14b) is arranged on the corresponding fixing opening (13) and - that the contacting region (7a, 7b) of the respective current collector (6a, 6b) thereby the adhesion layer (12a, 12b) is printed together.

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