Battery arrangement for a pedal-powered vehicle and pedal-powered vehicle with battery arrangement

Abstract

The invention relates to a battery arrangement (10) for a pedal-driven vehicle (50), comprising at least one battery module (11), the battery module (11) comprising a plurality of battery cell packs (12), wherein the battery cell packs (12) are arranged in series along a longitudinal axis (L), wherein at least one battery cell pack (12) comprises at least one cell holder (13) and a plurality of battery cells (14), wherein the battery cells (14) are arranged on the cell holder (13) such that a cavity (15) is formed between the battery cells (14), wherein the cavity (15) is limited with respect to its circumference, at least partially, by the cell holder (13) and / or the battery cells (14).

Description

State of the art

[0001] Battery systems for pedal-powered vehicles typically use multiple battery cells. To achieve the most advantageous integration of the battery system into a vehicle, especially a bicycle, a compact arrangement of the battery cells is desirable. Regarding the arrangement of the battery cells, the aim is to achieve not only the most compact overall dimensions but also sufficient installation space for other functional components of the battery system and to ensure safe operation. Disclosure of the invention

[0002] The present invention relates to a battery arrangement for a pedal-powered vehicle and to a pedal-powered vehicle with such a battery arrangement. Further features and details of the invention will become apparent from the dependent claims, the description, and the drawings. Features and details described in connection with the battery arrangement according to the invention naturally also apply in connection with the pedal-powered vehicle according to the invention, and vice versa, so that the disclosure regarding the individual aspects of the invention always refers, or can refer, to each other.

[0003] The present invention serves in particular to enable a safe and advantageous arrangement of battery cells within a battery assembly.

[0004] According to a first aspect, the present invention relates to a battery arrangement for a pedal-driven vehicle, in particular an electric bicycle. The battery arrangement comprises at least one battery module, the battery module comprising a plurality of battery cell packs, wherein the battery cell packs are arranged in series along a longitudinal axis.

[0005] At least one battery cell pack comprises at least one cell holder and a plurality of battery cells. In particular, it can be provided that at least one battery cell pack comprises at least two or exactly two, at least four or exactly four, at least six or exactly six, or at least eight or exactly eight battery cells. With regard to the present invention, the use of four battery cells has proven to be particularly advantageous.

[0006] According to the invention, the battery cells are arranged on the cell holder such that a cavity is formed between the battery cells, the cavity being limited, at least partially, by the cell holder and / or the battery cells with respect to its circumference. It is also possible, according to the present invention, for the cavity to be completely limited by the cell holder and / or the battery cells with respect to its circumference.

[0007] In other words, a battery arrangement for a pedal-powered vehicle, in particular an electric bicycle or pedelec, is proposed. The battery arrangement comprises at least one battery module, wherein the battery module in turn comprises a plurality of battery cell packs. The battery cell packs are arranged in a row or adjacent to each other along a longitudinal axis.

[0008] At least one battery cell pack comprises a cell holder and at least two or more than two battery cells. According to the invention, the battery cells are arranged on the cell holder such that a cavity is formed between the battery cells. This cavity is limited, at least partially, by the cell holder and / or the battery cells with respect to its circumference. The limitation can, in particular, be effected, at least partially, by a side wall of the battery cells.

[0009] A battery arrangement according to the invention offers the advantage that the cavity provided between the battery cells can be used to arrange further functional elements of the battery arrangement. In particular, the cavity can be used to arrange sensors for operational monitoring and / or cable routing. Relocating these functional elements, at least partially, into the cavity makes it possible to achieve an overall compact design for the battery arrangement. At the same time, the respective functional elements are protected from external influences within the cavity, thus supporting safe and reliable operation of the battery arrangement.

[0010] It may be provided that the features and functions described for a battery cell pack and / or a battery cell and / or a separator and / or a cell holder are implemented identically or at least partially in further battery cell packs and / or battery cells and / or separators and / or cell holders. In particular, at least two battery cell packs and / or battery cells and / or separators and / or cell holders may have an identical or substantially identical structure.

[0011] With regard to the present invention, it can be advantageously provided that the battery cells are arranged on the cell holder such that the centers of the surfaces of the battery cells form a trapezoid in cross-section, in particular an isosceles trapezoid. In particular, the centers of the surfaces can form the vertices of the trapezoid and / or lie on sides of the trapezoid. The cross-sectional plane underlying the cross-section is preferably a cross-sectional plane oriented orthogonally to the longitudinal axis or a cross-sectional plane defined by a transverse axis and a vertical axis, wherein the transverse axis and the vertical axis are oriented orthogonally to each other and orthogonally to the longitudinal axis. In other words, it can be preferably provided that at least one battery cell pack comprises at least four battery cells.In particular, it is conceivable that two of the four battery cells form a first pair and the remaining two battery cells a second pair, with the battery cells of each pair arranged at the same position or height with respect to a vertical axis. Furthermore, it is preferable that the battery cells of the first pair have a smaller spacing with respect to a transverse axis than the battery cells of the second pair. The vertical axis and the transverse axis are each oriented orthogonally to the longitudinal axis and orthogonally to each other. Such an arrangement of the battery cells in at least one battery cell pack has proven advantageous with regard to a compact overall design of the battery arrangement or battery cell pack, as well as a generous dimensioning of the cavity.

[0012] Advantageously, according to the present invention, at least one battery cell can be cylindrical and, in particular, the cavity can have a maximum width of at least 50%, more preferably at least 55% or at least 60%, of the diameter of the battery cell. The maximum width here refers to the maximum extent of the cavity along a transverse axis, wherein the transverse axis is oriented orthogonally to the longitudinal axis and / or orthogonally to a vertical axis. In particular, the maximum width of the cavity can be at least 8 mm, preferably at least 10 mm, and most preferably at least 12 mm or at least 14 mm.

[0013] Additionally or alternatively, the cavity can have a maximum depth of at least 80%, in particular at least 85% or at least 90% of the diameter of the battery cell. In this context, the maximum depth refers to the maximum extent of the cavity along the longitudinal axis. In particular, the depth of the cavity can be at least 15 mm, in particular at least 18 mm, and most preferably between 18 mm and 20 mm.

[0014] Additionally or alternatively, the cavity may have a maximum height that is less than the diameter of the battery cell. In this context, the maximum height refers to the maximum extent of the cavity along a vertical axis, where the vertical axis is oriented orthogonally to the longitudinal axis and / or orthogonally to a transverse axis. In particular, the height of the cavity may be a maximum of 21 mm, more specifically a maximum of 18 mm, preferably between 5 mm and 20 mm or between 8 mm and 18 mm.

[0015] Dimensioning the cavity according to one or more of the above specifications has proven advantageous with regard to a sufficient construction space formed by the cavity.

[0016] It can also be advantageously provided that the center of gravity of at least one battery cell pack lies within the cavity in cross-section. The cross-sectional plane underlying the cross-section is preferably a cross-sectional plane oriented orthogonally to the longitudinal axis or a cross-sectional plane defined by a transverse axis and a vertical axis, wherein the transverse axis and the vertical axis are orthogonal to each other and orthogonal to the longitudinal axis. In other words, it can be provided that, in at least one battery cell pack, at least the cell holder (or several cell holders) and the battery cells are positioned and designed such that a center of gravity, in particular the center of mass, of the battery cell pack lies within the cavity with respect to a positioning of the center of gravity along a vertical and a transverse axis.Additionally or alternatively, it may be provided that the cavity is positioned centrally or substantially centrally with respect to the extension of the battery cell pack along the longitudinal axis.

[0017] For the present invention, it can be advantageous if a separating element is arranged on at least one end face of at least one battery cell pack, particularly along the longitudinal axis, wherein the separating element preferably delimits the cavity with respect to its extension along the longitudinal axis, particularly on one side. The separating element can preferably form an end cap of the battery cell pack. Additionally or alternatively, the extension of the cavity along the longitudinal axis, particularly on a side of the cavity opposite the separating element, can be delimited by the cell holder. In this context, it is particularly conceivable that the cavity is delimited, completely or substantially completely, by the cell holder, the battery cells, and the separating element.

[0018] With reference to the present invention, it can further be provided that the separating element comprises at least one protective rib for at least partially shielding the cavity from hot gas escaping from an end face of a battery cell. In particular, it is conceivable that the protective rib demarcates the cavity from the battery cell, at least section by section, and / or forms a collar on the battery cell that projects beyond the end face. Thermal runaway can occur in battery cells, in which hot gases can escape from the battery cell, particularly from the end face. Contact of these hot gases with other battery cells can damage them and cause further malfunctions. The protective rib can reduce the flow of hot gas into the cavity and thus to other battery cells, thereby improving the safety of the battery assembly.

[0019] At least one protective rib can be arranged, at least partially, in conjunction with at least one or exactly one battery cell, or directly adjacent to the battery cell(s). Additionally or alternatively, at least one protective rib can be formed, at least partially, complementary to the circumference of at least one battery cell. This allows the protective rib to follow the contour of the battery cell and adhere to it, resulting in improved protection.

[0020] It may be provided that at least one separating element comprises a plurality of protective ribs. In particular, the number of protective ribs may correspond to the number of battery cells in the battery cell pack in question, with each protective rib being assigned to one battery cell. At least two protective ribs may be identical or substantially identical in design.

[0021] Additionally or alternatively, it can advantageously be provided that the separating element comprises at least one centering rib for centering the separating element on the cell holder, wherein the centering rib is preferably arranged, at least partially, in contact with the cell holder. The use of a centering rib offers the advantage of simplified assembly of the separating element on the cell holder. Furthermore, assembly errors in the form of incorrect positioning of the separating element relative to the cell holder can be easily and effectively avoided.

[0022] Preferably, at least one protective rib and at least one centering rib, and in particular all protective ribs and all centering ribs, can be designed as a continuous rib contour or a single continuous rib. In other words, it can be provided that at least one protective rib and one centering rib are not designed as separate ribs, but are formed jointly by a rib element or a single rib. This results in a simplified design of the separating element and further advantages in terms of simpler and more cost-effective manufacturing.

[0023] With respect to at least one rib contour, it can be provided that at least one centering rib, in particular all centering ribs, is / are arranged between two protective ribs. Additionally or alternatively, it is conceivable that at least one protective rib and / or centering rib engages in the cavity, at least partially, in particular in a form-fitting manner.

[0024] With regard to the present invention, it may further be advantageous if at least one cell holder comprises centering means for centering on an adjacent cell holder, wherein the centering means comprise at least one centering recess for receiving, in particular in a form-fitting manner, a centering extension and / or at least one centering extension for insertion into a centering recess.

[0025] To center two cell holders relative to each other, it can be provided that a first cell holder comprises centering means and a second cell holder comprises complementary centering means. For example, the first cell holder can comprise exclusively centering recesses for receiving centering extensions of the second cell holder, and the second cell holder can comprise exclusively centering extensions for insertion into the centering recesses of the first cell holder. Alternatively, it can be provided that at least one cell holder comprises both at least one centering recess and at least one centering extension. In particular, a combined arrangement of at least one centering recess and at least one centering extension in at least one cell holder has proven advantageous with regard to the present invention.

[0026] The use of centering elements enables precise and reliable positioning of the cell holders relative to each other. In particular, it can be provided that at least one additional cell holder includes complementary or identical centering elements. This allows the respective centering projections of the cell holders to be inserted into the recess of the other cell holder for centering.

[0027] Preferably, at least one battery cell pack comprises at least two cell holders, wherein the cell holders are centered relative to each other or connected to each other via the centering means. Additionally or alternatively, at least two cell holders of adjacent battery cell packs can be centered relative to each other or connected to each other via the centering means.

[0028] Advantageously, at least one centering projection, particularly in a first cell holder, and at least one centering recess, particularly in a second cell holder, can be designed such that the fit between the centering projection, particularly of the first cell holder, and the centering recess, particularly of the second cell holder, is an interference fit. In other words, the centering projection can be larger than the centering recess with respect to each tolerance position. This allows for a backlash-free, self-locking, and therefore particularly secure connection between two cell holders via the centering means.

[0029] With regard to the present invention, it has proven particularly advantageous if at least one centering extension is formed by at least two spring segments. For example, at least one centering extension can be formed as a hollow cylinder, wherein a shell of the hollow cylinder is divided into at least two segments, in particular spring segments, by at least two recesses. The recesses reduce the stiffness of the shell in the remaining segments, thus enabling a spring function. This allows for a simplified connection of cell holders via the centering means. At least one centering extension can be formed by more than two spring segments. In particular, forming at least one centering extension by at least three or exactly three spring segments has proven advantageous in this case.

[0030] Additionally or alternatively, it is conceivable that at least one centering extension is formed as an integral component, in particular of a single material and / or in one piece, with the cell holder, and / or that at least one centering chamfer is formed on the centering extension, in particular on an end facing away from the cell holder. In particular, such a centering chamfer can be formed on each spring segment. This facilitates the insertion of the centering extension into a centering recess.

[0031] Furthermore, it can be provided that the material thickness of the cell holder is reduced, at least partially, at an end facing the cell holder of at least one centering extension or at least one spring segment. For example, a groove following the outer circumference of the centering extension or spring segment, particularly directly adjacent to the centering extension or spring segment, can be formed for this purpose. This can further reduce the stiffness of the centering extension or the spring element in question and improve the spring function.

[0032] Furthermore, with regard to the present invention, it is conceivable that the cell holder comprises at least one, in particular primary, spring element for securing a battery cell to the cell holder, wherein the, in particular primary, spring element can be pre-tensioned against the battery cell by arranging the battery cell on the cell holder. This allows for reliable and positionally stable securing of the battery cell to the cell holder.

[0033] Preferably, in relation to the present invention, at least one, in particular a primary, spring element may form a boundary of the cavity. In particular, it may be provided that the spring element limits the cavity with respect to its circumference, at least partially. This results in a particularly compact design of the battery assembly, since the spring element is arranged in a particularly space-saving manner within the battery assembly. Furthermore, this arrangement allows for greater design freedom with respect to at least one, in particular a primary, spring element. Thus, larger dimensions of the spring element and therefore higher preload forces can be achieved in the area of ​​the cavity.

[0034] Furthermore, with regard to the invention, it is conceivable that the battery arrangement includes a housing for receiving the at least one battery cell pack, wherein the cell holder includes at least one, in particular secondary, spring element for securing the cell holder in the housing, wherein the, in particular secondary, spring element can be biased against the housing by an arrangement of the battery cell pack in the housing.

[0035] At least one spring element, in particular a primary or secondary element, can be designed as a leaf spring. Additionally or alternatively, at least one spring element, in particular a primary or secondary element, can be designed as an integral part of a cell holder or be monolithic and / or made of the same material as the cell holder. Additionally or alternatively, it can be provided that at least one cell holder has at least one receiving section, in particular a cylindrical section, for the at least partial, positive-locking reception of at least one battery cell. In this context, it can be provided that at least one spring element, in particular a primary or secondary element, forms a wall of the receiving section, at least partially.

[0036] Within the scope of the invention, it may be provided that at least one spring element, in particular a primary or secondary element, has a length of at least 8 mm, in particular at least 9.5 mm, preferably at least 10 mm, and particularly preferably between 10 mm and 11 mm, with respect to the longitudinal axis. Additionally or alternatively, at least one spring element, in particular a primary or secondary element, may have a material thickness of at least 1 mm, in particular at least 1.5 mm or at least 1.8 mm, in particular between 1.5 mm and 2.5 mm. Additionally or alternatively, at least one spring element, in particular a primary or secondary element, may have a width of at least 3 mm, in particular at least 4 mm, and preferably at least 5 mm.

[0037] Advantageously, at least one, in particular a primary, spring element can be designed such that, by arranging a battery cell on the cell holder, the spring element, in particular the primary element, can be pre-tensioned by a spring travel of at least 0.2 mm, in particular at least 0.3 mm or at least 0.4 mm. Additionally or alternatively, it is conceivable that at least one, in particular a secondary, spring element can be designed such that, by arranging the cell holder in the housing, the spring element, in particular the secondary element, can be pre-tensioned by a spring travel of at least 0.2 mm, in particular at least 0.3 mm or at least 0.4 mm. The spring travel preferably refers to an exposed end of the spring element.

[0038] According to a second aspect, the present invention further relates to a pedal-driven vehicle, wherein the pedal-driven vehicle comprises at least one battery arrangement according to the invention, in particular at least one battery arrangement according to any one of claims 1 to 14. With respect to a pedal-driven vehicle, the same advantages arise as those described with respect to a battery arrangement according to the invention. Preferably, the pedal-driven vehicle can be designed as a bicycle or electric bicycle, in particular a pedelec.

[0039] Further advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination.

[0040] Each schematically illustrates: Fig. 1. A view of a battery arrangement, Fig. 2 a view of a battery arrangement, Fig. 3 a view of a battery cell pack, Fig. 4 a view of a battery cell pack, Fig. 5 a view of a battery arrangement, Fig. 6 a view of a battery arrangement and Fig. 7 a view of a cell holder.

[0041] The Fig. Figure 1 shows a schematic view of a battery arrangement 10 for a pedal-powered vehicle 50. The battery arrangement comprises a housing 25, a charge level indicator 31, an electrical interface 32 for supplying electrical energy to the battery arrangement or for supplying electrical energy from the battery arrangement, and a mechanical mounting interface 33 for attaching the battery arrangement to a pedal-powered vehicle 50.

[0042] Fig. Figure 2 shows a schematic view of part of the interior of the Fig. 1. Battery arrangement shown 10. It is made from Fig. 2 can be seen that the battery arrangement 10 comprises a battery module 11, wherein the battery module 11 in turn comprises a plurality of battery cell packs 12 arranged in a row along a longitudinal axis L.

[0043] Fig. 3 and Fig. Figure 4 shows schematic views of a battery cell pack 12, wherein the battery cell pack 12 is in Fig. 3 is shown in an isometric view and in Fig. 4 in a top view looking at one end face, with the viewing direction along the longitudinal axis L. Furthermore, in Fig. 4 also shows a transverse axis Q and a vertical axis H, wherein the transverse axis Q and the vertical axis H are orthogonal to each other and each is orthogonal to the longitudinal axis L.

[0044] It will be made from Fig. 3 and Fig. 4. It is evident that the battery cell pack 12 comprises at least one cell holder 13 and a plurality of battery cells 14. In the present case, the battery cell pack 12 comprises two cell holders 13, which are arranged adjacent to each other and are, in particular, identical or substantially identical in design.

[0045] The battery cells 14 are arranged on the cell holder 13 such that a cavity 15 is formed between the battery cells 14, wherein the cavity 15 is limited, at least partially, by the cell holder 13 and / or the battery cells 14 with respect to its circumference.

[0046] This involves... Fig. 4 further shows that the battery cells 14 are arranged on the cell holder 13 such that the centers of the surfaces M of the battery cells 14 form the vertices of an isosceles trapezoid in cross-section.

[0047] The battery cells are cylindrical in design. The battery cells and the cell holder are designed and positioned relative to each other such that the center of mass SP of the battery cell pack 12 lies within the cavity 15 in cross-section.

[0048] Fig. Figure 5 illustrates the structure of the in Fig. 2 shows a partial exploded view of the battery arrangement 10. It can be seen that a separating element 16 is arranged on at least one end face along the longitudinal axis L of at least one battery cell pack 12, wherein the separating element 16 limits the cavity 15 with respect to its extent along the longitudinal axis L. In particular, it can be provided that separating elements 16 are arranged on both sides of the end faces along the longitudinal axis of at least one battery cell pack 12, as shown in Fig. 5 shown. The two in Fig. The 5 separating elements 16 shown are identically designed.

[0049] Out of Fig. As can be seen in Figure 5, each separating element 16 comprises at least one protective rib 17 for at least partially shielding the cavity 15 from hot gas escaping from an end face 18 of a battery cell 14. Furthermore, each separating element 16 comprises at least one centering rib 19 for centering the separating element 16 on the cell holder 13. The centering ribs 19 and the protective ribs 17 form a continuous rib contour. The described rib contour is present in the Fig. The separating elements 16 shown in the diagram are formed in an identical manner on both opposite sides of the separating elements 16.

[0050] The function of the protective or centering ribs is described in Fig. 6 clarifies, whereby in Fig. 6. The representation of the separating element 16 was essentially limited to the corresponding rib elements 17, 19 and their interaction with the cell holder 13. It is derived from Fig. It is evident from Figure 6 that the protective ribs 17 delimit the cavity 15 from the battery cell 14, at least in sections, and form a collar 40 on the battery cell 14 that projects beyond the end face 18 of the battery cell 14. It is also evident that the centering ribs 19 are arranged, at least in sections, in contact with the cell holder 13.

[0051] Fig. Figure 7 further shows a schematic view of a cell holder 13, the view directed towards one side of the cell holder 13 which is in Fig. 3 is oriented towards the adjacent cell holder 13. It is evident that the cell holder comprises centering means 20 for centering on the adjacent cell holder 13. The centering means 20 comprise at least one centering recess 21 for receiving, in particular in a form-fitting manner, a centering process 22, and at least one centering process 22 for insertion into a centering recess 21.

[0052] It will be made from Fig. 7 further shows that the centering process 22 is formed by three spring segments 23. At the ends of the spring segments 23 facing the cell holder 13, the material thickness of the cell holder 13 is locally reduced by grooves 41 in order to decrease the stiffness of the spring segments 23.

[0053] Fig. Figure 8 further shows a schematic view of a cell holder 13. It can be seen that the cell holder 13 comprises at least one primary spring element 24 for securing a battery cell 14 to the cell holder 13, wherein the primary spring element 24 can be biased against the battery cell 14 by an arrangement of the battery cell 14 on the cell holder 13.

[0054] Furthermore, it is derived from Fig. 8 shows that the cell holder 13 has at least one secondary spring element 26 for securing the cell holder 13 in the housing 25 (cf. Fig. 1) comprising, wherein the secondary spring element 26 can be biased against the housing by an arrangement of the battery cell pack 12 in the housing 25.

[0055] In the present case, several primary and secondary spring elements 24, 26 are each encompassed by the cell holder 13, the spring elements being designed as leaf springs. Cylindrical receiving sections 43 for receiving the battery cells 14 are formed on the cell holder 13, the primary and secondary spring elements 24, 26 each forming a wall of a receiving section 43, at least partially.

[0056] Furthermore, it is derived from Fig. 8 can be seen that the primary spring elements 24 limit the cavity 15, at least sectionally, with respect to its circumference.

[0057] Fig. Figure 9 also shows a schematic view of a pedal-driven vehicle 50, which includes at least one battery arrangement 10.

[0058] The preceding explanation of the embodiments describes the present invention solely by way of examples. Naturally, individual features of the embodiments can be freely combined with one another, provided this is technically feasible, without departing from the scope of the present invention.

Claims

[1] Battery arrangement (10) for a pedal-powered vehicle (50), comprising at least one battery module (11), the battery module (11) comprising a plurality of battery cell packs (12), wherein the battery cell packs (12) are arranged in series along a longitudinal axis (L), wherein at least one battery cell pack (12) comprises at least one cell holder (13) and a plurality of battery cells (14), wherein the battery cells (14) are arranged on the cell holder (13) such that a cavity (15) is formed between the battery cells (14), wherein the cavity (15) is limited in respect of its circumference, at least partially, by the cell holder (13) and / or the battery cells (14). [2] Battery arrangement (10) according to claim 1, characterized by , that the battery cells (14) are arranged on the cell holder (13) such that the centers of the surfaces (M) of the battery cells (14) form a trapezoid in cross-section, in particular an isosceles. [3] Battery arrangement (10) according to any one of the preceding claims, characterized by , that at least one battery cell (14) is cylindrical and the cavity has a maximum width of at least 50% of the diameter (D) of the battery cell (14) and / or the cavity (15) has a maximum depth of at least 85% of the diameter (D) of the battery cell (14) and / or the cavity (15) has a maximum height that is less than the diameter (D) of the battery cell (14). [4] Battery arrangement (10) according to any of the preceding claims, characterized by , that a center of gravity of at least one battery cell pack (12) lies within the cavity (15) in cross-section. [5] Battery arrangement (10) according to any of the preceding claims, characterized by, that a separating element (16) is arranged on at least one end face of the at least one battery cell pack (12), wherein the separating element (16) limits the cavity (15) with respect to an extension along the longitudinal axis (L). [6] Battery arrangement (10) according to claim 5, characterized by , that the separating element (16) comprises at least one protective rib (17) for at least partial shielding of the cavity (15) from a hot gas escaping from an end face (18) of a battery cell (14), wherein the protective rib (17) demarcates the cavity (15) from the battery cell (14), at least section by section, and forms a collar (40) on the battery cell (14) projecting beyond the end face (18) of the battery cell (14). [7] Battery arrangement (10) according to claim 5 or 6, characterized by, that the separating element (16) comprises at least one centering rib (19) for centering the separating element (16) on the cell holder (13), wherein the centering rib (19) is arranged, at least section by section, in contact with the cell holder (13). [8] Battery arrangement (10) according to claims 6 and 7, characterized by , that at least one protective rib (17) and at least one centering rib (19) are formed as a continuous rib contour. [9] Battery arrangement (10) according to any of the preceding claims, characterized by , that the cell holder (13) comprises centering means (20) for centering on an adjacent cell holder (13), wherein the centering means (20) comprise at least one centering recess (21) for receiving, in particular in a form-fitting manner, a centering process (22) and at least one centering process (22) for insertion into a centering recess (21). [10] Battery arrangement (10) according to claim 9, characterized by, that at least one centering process (22) is formed by at least two spring segments (23). [11] Battery arrangement (10) according to claim 10, characterized by , that at an end of at least one spring segment facing the cell holder (13) the material thickness of the cell holder (13) is reduced, at least section by section. [12] Battery arrangement (10) according to any of the preceding claims, characterized by , that the cell holder (13) comprises at least one spring element (24) for securing a battery cell (14) to the cell holder (13), wherein the spring element (24) can be biased against the battery cell (14) by an arrangement of the battery cell (14) on the cell holder (13). [13] Battery arrangement (10) according to claim 11, characterized by , that the spring element (24) limits the cavity (15), at least sectionally, with respect to its circumference. [14] Battery arrangement (10) according to any of the preceding claims, characterized by, furthermore, a housing (25) for receiving the at least one battery cell pack (12) is included, wherein the cell holder (13) includes at least one spring element (26) for securing the cell holder (13) in the housing (25), wherein the spring element (26) can be biased against the housing by an arrangement of the battery cell pack (12) in the housing (25). [15] Pedal-driven vehicle (50), in particular electric bicycle, comprising at least one battery arrangement (10) according to one of the preceding claims.

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