Battery housing for receiving a multiplicity of battery components, battery comprising a battery housing, and motor vehicle comprising a battery

Abstract

The invention discloses a battery housing (1) for receiving a multiplicity of battery components (3), having a first battery housing component (10), a second battery housing component (20), and a battery component holder (30) with a multiplicity of receiving devices (41, 42) for holding the multiplicity of battery components (3), wherein the battery component holder (30) is sandwiched between the first battery housing component (10) and the second battery housing component (20) and is connected to both. The battery housing (1) has at least one electrical connection device (70) for electrically connecting at least three battery components (3) which are held by three directly adjacent receiving devices (41, 42) of the battery component holder (30). The electrical connection device (70) is geometrically designed in such a way that symmetry points (SP) between at least three directly adjacent receiving devices (41, 42) are not covered by the electrical connection device (70) and so the battery component holder (30) is connected to the first battery housing component (10) and / or the second battery housing component (20) via connection devices (36) arranged in the regions of the symmetry points (SP).

Description

[0001] Battery housing for accommodating a variety of battery components, battery with a battery housing, motor vehicle with a battery

[0002] The present invention relates to a battery housing for accommodating a variety of battery components. Furthermore, the present invention relates to a battery with a battery housing and a motor vehicle with a battery.

[0003] Battery components, such as battery cells and / or battery modules, are electrically connected in batteries for motor vehicles, also known as traction batteries. The individual battery cells provide a predetermined nominal voltage and can be charged at this voltage. During the charging process of a traction battery, a charging infrastructure, such as a charging station, provides significantly higher voltages than the nominal voltage of the individual battery cells. Common charging stations provide a charging voltage of up to 800 volts. Even higher voltages will be available in the future. The electrical consumers supplied with power by the traction battery, such as electric motors, also typically require a higher voltage than the nominal voltage of the individual battery cells.Therefore, the battery cells are partially connected in series. Furthermore, the charging infrastructure provides charging currents that are higher than the currents required to charge the individual battery cells without damage. Therefore, the battery cells are partially connected in parallel.

[0004] To achieve the necessary parallel and series electrical connections between the battery cells, electrical connection devices known from the prior art have a complex geometry. This is particularly true for battery cells whose anode and cathode are located on one side of the cell for increased operational safety (keyword: controlled blow-out in the event of thermal runaway on one side). These electrical connection devices are attached to battery components located within a battery housing and electrically connected to them. Subsequently, the space between the battery components and the battery housing is filled with a hardening potting compound, thus securely holding the battery components within the housing against vibration.

[0005] To increase energy density, new generation batteries are often built according to the "cell-to-pack" principle. This means that the battery cells are not installed in individual battery modules within the battery housing. As described above, the battery cells are instead integrated directly into the battery housing. This is typically achieved by bonding the battery cells across their entire surface or by completely embedding them in potting compounds. Medium-density polyurethane foams are typically used as potting compounds, bonding to the battery cells and the battery housing through adhesion. The potting compound acts as an electrical and thermal insulator between the battery cells and ensures sufficient torsional and flexural rigidity of the battery.This allows the battery to be smaller than a conventional battery with battery modules for a given capacity.

[0006] However, batteries designed in this way have the disadvantage that a technologically difficult-to-control and slow process of potting and curing the potting compound must be carried out. This can lead to potting compound getting into unintended areas within the battery casing. Furthermore, these batteries have the problem that the potting compound does not completely fill the areas within the battery casing intended for filling, which can potentially impair the mechanical and thermal performance of the battery. Additionally, the cured potting compound can have an inhomogeneously distributed density. Another disadvantage is the poor recyclability of the battery casing, which is primarily due to the complex separation of the battery casing materials.

[0007] These disadvantages are particularly pronounced in battery casings made of plastic or fiber-reinforced plastic. The plastic surfaces of the battery casing require extensive pretreatment to achieve sufficient adhesion between the potting compound and the casing. Furthermore, subsequent separation of the potting compound and a plastic or fiber-reinforced plastic battery casing for recycling is even more difficult than with a metal battery casing.

[0008] Replacing the potting compound described above with a battery component holder positioned between two battery housing shells and made, for example, of a solid material (e.g., a solid plastic), into which the battery cells are inserted in receiving devices of the battery component holder, is also not a viable solution. This is because the battery component holder must be connected to the two battery housing shells to achieve a predetermined battery rigidity.In a top view of such a battery, it is evident that the intermediate area between the receiving devices, which has the greatest material thickness, is covered by the electrical connection device. Therefore, the connection between the battery component holder and the battery shells must be made at the points on the battery component holder with the smaller material thickness, and not at the points where the battery component holder has the greatest material thickness. In a top view, i.e., viewed parallel to a longitudinal direction of the receiving devices, the battery component holder has the greatest material thickness at points of symmetry located between three or four receiving devices.

[0009] The present invention is based on the objective of providing a battery housing for receiving battery cells which has improved torsional and flexural stiffness and at the same time excellent recyclability and which is easier to manufacture within a shortened cycle time.

[0010] The problems underlying this invention are solved by a battery housing with the features of claim 1. Advantageous embodiments of the battery housing are described in the dependent claims.

[0011] More precisely, the problem underlying the invention is solved by a battery housing for receiving a plurality of battery components, wherein the battery housing comprises a first battery housing component, a second battery housing component and a battery component holding device with a plurality of receiving devices for holding the plurality of battery components, wherein the battery component holding device is arranged sandwich-like between the first battery housing component and the second battery housing component and is connected to them.The battery housing according to the invention has at least one electrical connection device for electrically connecting at least three battery components which are held by three directly adjacent receiving devices of the battery component holder, wherein the electrical connection device is arranged at a first end of the battery component holder facing the first battery housing component or at a second end of the battery component holder facing the second battery housing component.The electrical connection device has at least a first connecting arm and a second connecting arm which is electrically connected to the first connecting arm, wherein, in a top view of the battery component holder, the respective first connecting arms extend from a center point of a first receiving device to a center point of another first receiving device and the respective second connecting arms extend from the center point of a first receiving device to an edge point of a second receiving device.The respective first connecting arms bridge the respective first receiving devices to adjacent further first receiving devices at the smallest possible distance between the respective first receiving devices, and the respective second connecting arms bridge a first receiving device to an adjacent second receiving device at the smallest possible distance between the respective first receiving device and the respective second receiving device. The battery housing according to the invention has the advantage that it has improved recyclability. Because a complex potting compound is omitted from the battery housing, recycling of the battery housing is possible without complex separation processes for separating the potting compound from the battery housing components.Since, in a top view of the battery component holder, the connecting arms of the electrical connection device between the individual receiving devices extend over narrow sections of the battery component holder, i.e., over areas of the battery component holder that have a small or minimal material thickness in a top view, the areas of the battery component holder that are arranged at symmetry points between the adjacent receiving devices are free for connection to a first and / or second battery housing component. Thus, the battery housing according to the invention has the advantage of improved torsional and bending stiffness.Because the battery component holder can be connected to the first battery housing component and / or the second battery housing component in the areas described above, the battery housing can better absorb shear and bending forces.

[0012] The feature according to which the battery component holder is arranged sandwich-like between the first battery housing component and the second battery housing component can also be expressed as the battery component holder being arranged as a sandwich core between the first battery housing component and the second battery housing component. Consequently, the battery component holder can also be referred to as a sandwich core. The first battery housing component is preferably designed as a battery housing shell. The first battery housing component can also be referred to as a battery housing lower shell or, more generally, as a lower shell. The first battery housing component preferably comprises or is formed from plastic, more preferably a fiber-reinforced plastic.

[0013] The second battery housing component is preferably designed as a battery housing shell or a battery housing cover, the battery housing cover also being designed as a battery housing shell. The second battery housing component can also be referred to as the battery housing upper shell or, more generally, as the upper shell. The second battery housing component preferably comprises or is formed from plastic, more preferably a fiber-reinforced plastic.

[0014] The receiving devices of the battery component holder are designed as receiving recesses and / or as through-openings in the battery component holder.

[0015] A battery housing designed in this way has the advantage that the battery components can be more easily inserted into the receiving devices of the battery component holder of the battery housing.

[0016] The battery components are preferably designed as battery cells. The battery cells are preferably designed as cylindrical battery cells. The anode and the cathode of the respective battery cells are preferably located on one side of the respective battery cells. Furthermore, it is also possible that the battery components are designed as battery modules. Preferably, the battery housing is designed as a traction battery housing for a traction battery of an electrically powered motor vehicle.

[0017] Preferably, the traction battery housing can be mounted on the body of a motor vehicle.

[0018] Preferably, the receiving devices of the battery component holder have a receiving volume. The receiving volume is preferably at least partially limited by an inner wall of the receiving device.

[0019] Preferably, the receiving devices of the battery component holder have a first receiving opening and / or a second receiving opening. The first receiving opening is preferably arranged opposite a base surface of the first battery housing component. The second receiving opening is preferably arranged opposite a base surface of the second battery housing component. A battery component can be inserted into the receiving device through either the first receiving opening or the second receiving opening.

[0020] The receiving devices of the battery component holder can also be referred to as receiving cavities.

[0021] Preferably, the receiving devices of the battery component holder have a free cross-section that is semi-circular or circular in shape.

[0022] Preferably, the receiving devices of the battery component holder have a free cross-section that essentially corresponds to the cross-section of a battery component to be received in the battery housing. A battery housing designed in this way has the advantage that the battery components can be received more easily in the receiving devices of the battery component holder of the battery housing.

[0023] The electrical connection device is preferably made of a metal or at least has metal in the contact areas. The metal can be selected from the group consisting of iron, steel, copper, aluminum, brass, or mixtures of these metals.

[0024] The electrical connection device is preferably monolithic. Consequently, the connecting arms of the electrical connection arms are formed in one piece.

[0025] The electrical connection device preferably has a smaller thickness than its longitudinal and lateral dimensions. The thickness of the electrical connection device is preferably less than 10 mm, more preferably less than 5 mm, more preferably less than 3 mm, more preferably less than 2 mm, and most preferably less than 1 mm. In the assembled state of the electrical connection device, its thickness extends along a direct line connecting the first battery housing component and the second battery housing component.

[0026] The connecting lines between the centers of the at least three receiving devices of the battery component holder preferably form pairs with an angle of 60° and / or 90° and / or 120°. Consequently, these connecting lines form an equilateral triangle. The electrical connection device can be designed such that all first and second connecting arms are integrally formed, preferably monolithically.

[0027] Preferably the electrical connection device(s) is partially enclosed by a plastic body, wherein contact areas of the first and second connection arms remain accessible for electrical contacting.

[0028] The recording devices can also be arranged such that the connecting lines from the first recording device to the second and to the third recording device form an angle of 90°, and that the connecting line from the second recording device to the third recording device to the connecting lines which form an angle of 90° with each other form two angles of 45° each.

[0029] The top view of the battery component holder is a view along a viewing direction parallel to a longitudinal direction or axis of symmetry of the receiving devices.

[0030] The feature, according to which the second connecting arm of the electrical connecting device extends to an edge point of a second receiving device, means that the second connecting arm does not extend to the center point of the second receiving device but ends before it.

[0031] Preferably, the first connecting arm and / or the second connecting arm extend in a straight line in relation to the electrical connecting device.

[0032] The battery component holder can be designed as a single piece or in multiple parts. Preferably, the battery housing is designed such that a first subgroup of the receiving devices is arranged in rows and a second subgroup of the receiving devices is arranged in columns. The electrical connection device has at least two second connecting arms, wherein, in a top view of the battery component holder, the first connecting arm extends from a first receiving device arranged in a first column to a first receiving device arranged in a second column, and wherein, in a top view of the battery component holder, the respective second connecting arms extend from a first receiving device arranged in a first row to a second receiving device arranged in a second row.

[0033] The appropriately designed battery housing offers the advantage that the number of battery components can be increased. Furthermore, the mounting devices are arranged regularly, thus simplifying the geometric design of the electrical connection. Additionally, the appropriately designed battery housing enables improved series connection of the battery components.

[0034] The rows and / or columns can be straight. It is also possible for the rows and / or columns to have a regular undulating pattern (zigzag).

[0035] Further preferably, the battery housing is designed such that the electrical connection device has at least two first connecting arms, wherein, in a top view of the battery component holder, a first connecting arm extends from a first receiving device arranged in a first column to a first receiving device arranged in a second column, and another first connecting arm extends from the first receiving device arranged in the second column to a first receiving device arranged in a third column.

[0036] The appropriately designed battery housing enables improved electrical parallel connection of the increasing number of battery components.

[0037] Preferably, the battery housing is designed such that a first subgroup of the receiving devices is arranged in rows and a second subgroup of the receiving devices is arranged in columns. The electrical connection device has at least two second connecting arms, wherein, in a top view of the battery component holder, the first connecting arm extends from a first receiving device arranged in a first row to a first receiving device arranged in a second row, and wherein, in a top view of the battery component holder, the respective second connecting arms extend from a first receiving device arranged in a first column to a second receiving device arranged in a second column.

[0038] The appropriately designed battery housing offers the advantage that the number of battery components can be increased. Furthermore, the mounting devices are arranged regularly, thus simplifying the geometric design of the electrical connection. Additionally, the appropriately designed battery housing enables improved series connection of the battery components.

[0039] The rows and / or columns can be straight. It is also possible for the rows and / or columns to have a regular undulating pattern (zigzag). Furthermore, the battery housing is preferably designed such that the electrical connection device has at least two first connecting arms, wherein, in a top view of the battery component holder, a first connecting arm extends from a first receiving device arranged in a first row to a first receiving device arranged in a second row, and a further first connecting arm extends from the first receiving device arranged in the second row to a first receiving device arranged in a third row.

[0040] The appropriately designed battery housing enables improved electrical parallel connection of the increasing number of battery components.

[0041] Preferably, the battery housing is designed such that the electrical connection device has a height profile, wherein end regions of the respective second connecting arms extend further into the respective second receiving devices of the battery component holder than the first connecting arms extend into the respective first receiving devices.

[0042] The specially designed battery housing allows for simplified contact between the anodes and cathodes of the respective battery components. In particular, for battery components whose anode and cathode are located on a common side, the electrical contact is simplified by the specially designed battery housing.

[0043] Alternatively, the battery housing is designed such that the electrical connection device has a height profile, wherein end regions of the respective first connecting arms extend further into the respective second receiving devices of the battery component holder than the second connecting arms extend into the respective first receiving devices.

[0044] According to another alternative design, the battery housing is designed such that the respective first connecting arms and the respective second connecting arms extend equally far into the respective receiving devices.

[0045] Preferably, the battery housing is designed such that the respective first connecting arms enclose an angle in the range of 55° to 65°, preferably in the range of 56.5° to 63.5°, more preferably in the range of 58.5° to 61.5°, particularly preferably an angle of 60°, and / or in the range of 115° to 125°, preferably in the range of 116.5° to 123.5°, more preferably in the range of 118.5° to 121.5°, particularly preferably an angle of 120°.

[0046] The specially designed battery housing has the advantage that the packing capacity of the battery components to be accommodated can be increased even further.

[0047] Preferably, the battery housing is designed such that the respective first connecting arms form an angle with the respective second connecting arms in the range of 85° to 95°, preferably in the range of 86.5° to 93.5°, more preferably in the range of 88.5° to 91.5°, and particularly preferably in the range of 90°.

[0048] Preferably, the battery housing is designed such that it has a number of first receiving openings corresponding to the number of receiving devices, which are arranged opposite a base surface of the first battery housing component and through which the respective receiving devices are accessible, and / or that the battery component holder has a number of second receiving openings corresponding to the number of receiving devices, which are arranged opposite a base surface of the second battery housing component and through which the respective receiving devices are accessible, wherein the respective first connecting arms and / or the respective second connecting arms of the electrical connecting device at least partially cover the first receiving opening and / or the second receiving opening in a top view of the battery component holder.

[0049] The appropriately designed battery housing facilitates the electrical contacting of battery components used in the receiving devices by the electrical connection device.

[0050] Preferably, the battery housing is designed such that it has a number of electrically insulating partitions corresponding to the number of receiving devices, which at least partially delimit the first receiving openings and / or the second receiving openings, wherein the partitions are each arranged in a sandwich-like manner between a receiving space of the receiving devices and each a first connecting arm of the electrical connecting device.

[0051] The appropriately designed battery housing has the advantage of preventing unintended electrical contact between the first connecting arms and, for example, the cathodes of the battery components used in the receiving devices. Consequently, the appropriately designed battery housing increases the operational reliability of a battery that incorporates such a housing.

[0052] Preferably, the battery housing is designed such that the battery component holder has at least one positioning pin, preferably several positioning pins, wherein the electrical connection device has at least one through-opening, preferably a number of through-openings corresponding to the number of positioning pins, wherein the at least one positioning pin protrudes through the through-opening of the connection device, preferably all positioning pins each protrude through a through-opening.

[0053] The specially designed battery housing offers the advantage of facilitating the correct positioning of the electrical connection. This allows battery components used in the receiving devices to be reliably and reliably connected to each other in the desired manner.

[0054] Preferably, the battery housing is designed such that the battery component holder has connecting devices for connecting to the first battery housing component and / or to the second battery housing component, wherein, in a top view of the battery component holder, at least one connecting device is arranged in an area around a point of symmetry between at least three directly adjacent receiving devices, in particular all connecting devices are arranged in areas around respective points of symmetry between three directly adjacent receiving devices.

[0055] The appropriately designed battery housing offers the advantage of improved torsional and bending stiffness. Because the battery component holder is connected to the first and / or second battery housing component by means of the connecting elements located in the areas described above, the battery housing can better withstand shear and bending forces. This is because the connecting elements are located in the areas between the respective mounting elements that have the greatest material thickness.

[0056] The connecting devices are preferably designed as projections extending from a base surface of the battery component holder towards the first battery housing component and / or the second battery housing component.

[0057] Furthermore, the connecting devices can be designed as connecting pins that extend parallel to the longitudinal axes of the respective receiving devices and are inserted, for example, in and / or through openings that pass through the symmetry points described above. The pins can, for example, be made of or have a plastic and / or metal composition.

[0058] Preferably, the connecting devices have a semicircular or circular cross-section when viewed from above on an end face. In other words, the connecting devices can be designed as cylinders.

[0059] Preferably, the battery housing is designed such that the battery component holder is connected to the first battery housing component and / or to the second battery housing component by means of a material connection and / or a form connection and / or a force connection.

[0060] A material-fit connection between the battery component holder and the first and / or second battery housing component enables a simplified battery housing design and a shorter cycle time for battery housing production. A form-fit connection between the battery component holder and the first and / or second battery housing component enables a particularly stable connection and thus further increases the torsional and bending stiffness of the battery housing.

[0061] Preferably, the battery housing is designed such that the first battery housing component and / or the second battery housing component and / or the battery component holder are made of the same material or are formed from the same material or material mix.

[0062] A battery housing designed in this way has the advantage that the battery housing has a further improved recyclability.

[0063] The same material can be in the form of a thermoplastic material, in particular a polypropylene (PP), a polycarbonate (PC) and / or a polyamide (PA).

[0064] The same material can be designed as a foamed plastic. A battery casing designed in this way has the advantage of reduced density, making it lighter, while simultaneously offering improved recyclability.

[0065] Alternatively, the same material can be made of solid plastic. A battery housing made of this material has the advantage of further improved torsional and flexural stiffness, as well as improved recyclability.

[0066] The present invention also aims to provide a battery which has improved torsional and flexural stiffness and at the same time has improved recyclability.

[0067] The problem underlying the present invention is further solved by a battery comprising a battery housing according to an exemplary embodiment described above and a plurality of battery components, each of which is received in a receiving device of the battery component holder.

[0068] The present invention also aims to provide a motor vehicle which has a battery with improved recyclability.

[0069] The problem underlying the present invention is solved by a motor vehicle with a battery described above, wherein the battery is energy-coupled with an electric drive motor of the motor vehicle.

[0070] Further advantages, details and features of the invention will become apparent from the illustrated examples below.

[0071] Specifically, they show:

[0072] Figure 1A: a top view of an electrical connection device known from the prior art for connecting battery cells in series and in parallel;

[0073] Figure 1B: a top view of another electrical connection device known from the prior art for connecting battery cells in series and in parallel;

[0074] Figure 2: a sectional view of a battery housing according to the invention in the area of ​​a receiving device, wherein an electrical connection device is not shown;

[0075] Figure 3: a top view of an exemplary electrical connection device of a battery housing according to the invention connected to a plurality of battery components, wherein the first and second battery housing components and the battery component holder are not shown;

[0076] Figure 4: a top view of another exemplary electrical connection device of a battery housing according to the invention, connected to a plurality of battery components, wherein the first and second battery housing components and the battery component holder are not shown;

[0077] Figure 5: a top view of part of a battery component holder of a battery housing according to the invention, which is used to illustrate points or areas of symmetry between receiving devices;

[0078] Figure 6: a top view of part of a further battery component holder of a battery housing according to the invention, which is used to illustrate points or areas of symmetry between receiving devices;

[0079] Figure 7: a schematic sectional view of an exemplary battery according to the invention, wherein the first and second battery housing components are not shown;

[0080] Figure 8: a battery component holder of a battery housing in top view; and Figure 9: a top view of a battery showing a battery housing.

[0081] In the following description, identical reference symbols denote identical components or identical features, so that a description given for one component in relation to one figure also applies to the other figures, thus avoiding repetitive descriptions. Furthermore, individual features described in connection with one embodiment can also be used separately in other embodiments.

[0082] Figure 1A shows a top view of an electrical connection device 80 known from the prior art for connecting battery cells 3 in series and in parallel. The battery cells 3 have their respective anodes 4 and cathodes 5 on the same side. In the top view of the respective battery cells 3, the anodes 4 are located centrally and the cathodes 5 are located at the edge on one side of the respective battery cells 3.

[0083] Some battery cells 3 are inserted into first receiving devices 41 and the other battery cells 3 are inserted into second receiving devices 42 of a battery cell holder not shown in Figure 1A. The electrical connection device 80 is designed such that it electrically connects the anodes 4 of the battery cells 3 inserted into the first receiving devices 41 and the cathodes 5 of the battery cells 3 inserted into the second receiving devices 42.

[0084] The battery cell holder (not shown in Figure 1A) has, in plan view (i.e., viewed parallel to a longitudinal direction of the receiving devices 41, 42), the greatest material thickness in areas of symmetry points SP located between three receiving devices 41, 42. Figure 1A shows that the electrical connection device 80 extends over the symmetry points SP in both plan view and top view of the battery cell holder (not shown). Therefore, the areas of the battery cell holder around the symmetry points are not accessible for connection to a battery shell. The battery cell holder must be connected to a battery shell via other areas that have a small material thickness.The material thickness is greater than the areas around the symmetry points, so that a suitably designed battery housing has reduced torsional and bending stiffness.

[0085] Figure 1B shows a top view of another electrical connection device 90 known from the prior art for connecting battery cells 3 in series and in parallel. Although the geometry of the electrical connection device 90 shown in Figure 1B differs from that of the electrical connection device 80 shown in Figure 1A, the electrical connection device 90 also covers a large part of the areas of the battery cell holder in top view, which are arranged around the respective symmetry points SP.

[0086] Figure 2 shows a sectional view of a battery housing 1 according to the invention for receiving a plurality of battery components 3 in the area of ​​a receiving device 41, 42. The battery housing 1 has a first battery housing component 10 and a second battery housing component 20, which at least partially define a receiving volume 2 of the battery housing 1. Furthermore, the battery housing 1 has a battery component holder 30, which has a plurality of receiving devices 41, 42 for receiving the battery components 3. In Figure 2, only one receiving device 41, 42 is shown; however, the battery component holder 30 has a plurality of receiving devices 41, 42, as can be seen from Figures 3 to 9.The battery component holder 30 is arranged in a sandwich-like manner between the first battery housing component 10 and the second battery housing component 20 in the receiving volume 2 of the battery housing 1 and is connected to the first battery housing component 10 and to the second battery housing component 20. Consequently, the battery component holder 30 is arranged as a sandwich core 30 between the first battery housing component 10 and the second battery housing component 20 in the receiving volume 2 of the battery housing 1 and is connected to the first battery housing component 10 and to the second battery housing component 20.

[0087] The battery component holder 30 has a plurality of connecting devices 36 arranged on its end faces. The battery component holder 30 is connected to the first battery housing component 10 and to the second battery housing component 20 by means of the plurality of connecting devices 36. The connecting devices 36 of the battery component holder 30 are each designed as connecting projections 36, each of which projects from an end face 31, 32 of the battery component holder 30.

[0088] Each receiving device 41, 42 of the battery component holder 30 has a receiving volume 43, which is partially limited by an inner wall 44 of the receiving device 41, 42. The battery components 3 are received in the respective receiving volumes 43 of the receiving devices 41, 42. The receiving device 41, 42 of the battery component holder 30 has a circular free cross-section. The receiving device 41, 42 further has a first receiving opening 45 and a second receiving opening 46 opposite the first receiving opening 45. The first receiving opening 45 is arranged opposite a base surface 11 of the first battery housing component 10, and the second receiving opening 46 is arranged opposite a base surface 21 of the second battery housing component 20.

[0089] The receiving device 41, 42 has a battery component support 50 on which the battery component 3 rests. A free space 60 is formed between the battery component support 50 and the base 11 of the first battery housing component 10. The free space 60 can be configured to hold cooling fluid for cooling the battery component 3. The battery component support 50 is configured as a constriction 51 of the receiving device 41, 42.

[0090] The battery housing 1 according to the invention further comprises an electrical connection device 70 which is not shown in Figure 2, but which is shown in two different versions in Figures 3 and 4.

[0091] The electrical connection device 70 electrically connects at least three battery components 3 to each other, which are held by three directly adjacent receiving devices 41, 42 of the battery component holder 30.

[0092] Figure 7 shows that the electrical connection device 70 is arranged at the first end 31 of the battery component holder 30, which faces one of the first battery housing components 10. However, it is also possible for the electrical connection device 70 to be arranged at the second end 32 of the battery component holder 30, which faces one of the second battery housing components 20. As can be seen from Figures 3 and 4, the electrical connection device 70 has at least a first connecting arm 71 and a second connecting arm 72, which is electrically connected to the first connecting arm 71.

[0093] In a top view of the battery component holder 30, the respective first connecting arms 71 extend from a center point 41M of a first receiving device 41 to a center point 41M of another first receiving device 41, and the respective second connecting arms 72 extend from the center point 41M of a first receiving device 41 to an edge point 42R of a second receiving device 42. The respective first connecting arms 71 bridge the respective first receiving devices 41 to adjacent further first receiving devices 41 at a minimum distance 37 between the respective first receiving devices 41. The respective second connecting arms 72 each bridge a first receiving device 41 to a respective adjacent second receiving device 42 at a minimum distance 37 between the respective first receiving device 41 and the respective second receiving device 42.

[0094] Figure 3 shows an exemplary electrical connection device 70. It can be seen that a first subgroup of the receiving devices 41, 42 is arranged in rows RI, R2 and a second subgroup of the receiving devices 41, 42 is arranged in columns S1, S2, S3, S4. The electrical connection device 70 has at least four second connecting arms 72 and three first connecting arms 71.

[0095] In a top view of the battery component holder 30 and the electrical connection device 70, a first connecting arm 71 extends from a first receiving device 41 arranged in a first column S1 to a first receiving device 41 arranged in a second column S2. A further first connecting arm 71 extends from the first receiving device 41 arranged in the second column S2 to a first receiving device 41 arranged in a third column S3. A further first connecting arm 71 extends from the first receiving device 41 arranged in the third column S3 to a first receiving device 41 arranged in a fourth column S4.The respective second connecting arms 72 extend from a first receiving device 41, which is arranged in a first row RI, to a second receiving device 42, which is arranged in a second row R2.

[0096] With this design of the electrical connection device 70, it is ensured that the symmetry points SP between each of three receiving devices 41, 42 are not covered by the electrical connection device 70.

[0097] Figure 4 shows another exemplary electrical connection device 70. It can be seen that a first subgroup of the receiving devices 41, 42 is arranged in rows RI, R2, R3, R4 and a second subgroup of the receiving devices 41, 42 is arranged in columns SI, S2. The electrical connection device 70 has at least four second connecting arms 72 and three first connecting arms 71.

[0098] In a top view of the battery component holder 30 and the electrical connection device 70, a first connecting arm 71 extends from a first receiving device 41 arranged in a first row RI to a first receiving device 41 arranged in a second row R2. Another first connecting arm 71 extends from the first receiving device 41 arranged in a second row R2 to a first receiving device 41 arranged in a third row R3. Yet another first connecting arm 71 extends from the first receiving device 41 arranged in the third row R3 to a first receiving device 41 arranged in a fourth row R4.The respective second connecting arms 72 extend from a first receiving device 41, which is arranged in a first column S 1, to a second receiving device 42, which is arranged in a second column S2.

[0099] With this design of the electrical connection device 70, it is ensured that the symmetry points SP between each of three receiving devices 41, 42 are not covered by the electrical connection device 70.

[0100] Figure 5 shows a top view of part of a battery component holder 30 of a battery housing 1 according to the invention. It can be seen that the respective symmetry points SP and symmetry regions SP are formed between three directly adjacent receiving devices 41, 42.

[0101] Figure 6 shows a top view of part of another exemplary battery component holder 30 of a battery housing 1 according to the invention. It can be seen that the respective symmetry points SP or symmetry regions SP are formed between four directly adjacent receiving devices 41, 42.

[0102] Figure 7 shows a schematic sectional view of an exemplary battery 100 according to the invention, wherein the first battery housing component 10 and the second battery housing component 20 of the battery housing 1 are not shown. The battery components 3 are inserted into the receiving devices 41, 42 of the battery component holder 30 in the manner described above. It can be seen from Figure 7 that the electrical connection device 70 has a height profile, wherein end regions of the respective second connecting arms 72 extend further into the respective second receiving devices 42 of the battery component holder 30 than the first connecting arms 71 extend into the respective first receiving devices 41.The anode 4 of the battery component 3 received in the first receiving device 41 is electrically contacted by the first connecting arm 71, and the cathode 5 of the battery component 3 received in the second receiving device 42 is electrically contacted by the second connecting arm 71.

[0103] Figure 8 shows an exemplary battery component holder 30 of a battery housing 1 according to the invention in a top view. The battery component holder 30 has connecting projections 36 that protrude from a second end face 32 and are arranged adjacent to three receiving devices 41, 42. The connecting projections 36 are arranged circularly at equidistant intervals around the second receiving opening 46 of the receiving devices 41, 42 and are located in the region of the respective symmetry points SP.

[0104] Figure 9 shows a top view of a battery 100 comprising a battery housing 1. The battery 100 has a plurality of battery components 3 which are received in the battery component holder 30, the battery component holder 30 being arranged in the receiving volume 2 of the battery housing 1.

[0105] Reference symbol list

[0106] 1 battery case

[0107] 2. Storage volume (of the battery housing)

[0108] 3 Battery component / battery cell

[0109] 4 Anode (of the battery component)

[0110] 5 Cathode (of the battery component)

[0111] 10 First battery housing component

[0112] 11 Base area (of the first battery housing component)

[0113] 20 Second battery housing component

[0114] 21 Base area (of the second battery housing component)

[0115] 30 battery component holders

[0116] 31 First end face

[0117] 32 Second front face

[0118] 35 connecting surfaces

[0119] 36 Connection device (of the battery component holder)

[0120] 37 Smallest distance between two recording devices

[0121] 38 Partition wall

[0122] 41 First reception facility

[0123] 4. At the center of the first reception facility

[0124] 42 Second reception facility

[0125] 42R Edge point of the second recording device

[0126] 43 Recording volume (of the recording device)

[0127] 44 inner wall (of the receiving device)

[0128] 45 first admission opening (of the admission facility)

[0129] 46 second reception opening (of the reception facility)

[0130] 50 battery component tray

[0131] 51 Narrowing (of the receiving facility)

[0132] 60 Free space (between the base of the first battery housing component and the battery components)

[0133] 70 electrical connection device

[0134] 71 First connecting arm (of the electrical connecting device) 72 Second connecting arm (of the electrical connecting device)

[0135] 80 electrical connection device (state of the art)

[0136] 90 Electrical connection device (state of the art)

[0137] 100 batteries

[0138] RI First Row of Reception Facilities

[0139] R2 Second row of reception facilities

[0140] R3 Third row of reception facilities S 1 First column of reception facilities

[0141] 52 Second column of reception facilities

[0142] 53 Third column of reception facilities

[0143] SP Symmetry point

Claims

Patent claims 1. Battery housing (1) for receiving a plurality of battery components (3), comprising: a first battery housing component (10); a second battery housing component (20); a battery component holder (30) with a plurality of receiving devices (41, 42) for holding the plurality of battery components (3), wherein the battery component holder (30) is arranged sandwich-like between the first battery housing component (10) and the second battery housing component (20) and is connected to them, wherein the battery housing (1) is characterized by the following features: the battery housing (1) has at least one electrical connection device (70) for electrically connecting at least three battery components (3), which are provided by three directly adjacent receiving devices (41, 42) of the battery component holder. (30) are held; the electrical connection device (70) is attached to one of the first battery housing components (10) at the first end (31) of the The electrical connection device (70) is arranged either on the battery component holder (30) or at the second end (32) of the battery component holder (30) facing the second battery housing component (20); the electrical connection device (70) has at least one first connecting arm (71) and a second connecting arm (72) which is electrically connected to the first connecting arm (71); in a top view of the battery component holder (30), the respective first connecting arms extend (71) from a midpoint (41M) of a first receiving device (41) to a midpoint (41M) of another first receiving device (41) and the respective second connecting arms (72) extend from the midpoint (41M) of a first receiving device (41) to an edge point (42R) of a second receiving device (42); the respective first connecting arms (71) bridge the respective first receiving devices (41) to each adjacent further first receiving devices (41) at each smallest distance (37) between the respective first receiving devices (41) and the respective second connecting arms (72) bridge each first receiving device (41) to each adjacent second receiving device (42) at each smallest distance (37) between the respective first receiving device (41) and the respective second receiving device (42).

2. Battery housing (1) according to claim 1, characterized by the following features: a first subgroup of the receiving devices (41, 42) is arranged in rows (RI, R2, R3); a second subgroup of the receiving devices (41, 42) is arranged in columns (SI, S2, S3); the electrical connection device (70) has at least two second connecting arms (72); in a top view of the battery component holder (30), the first connecting arm (71) extends from a first receiving device (41) arranged in a first column (S1) to a first receiving device (41) arranged in a second column (S2); and in a top view of the battery component holder (30), the respective second connecting arms extend (72) from a first receiving device (41) arranged in a first row (RI) to a second receiving device (42) arranged in a second row (R2).

3. Battery housing (1) according to claim 2, characterized by the following features: the electrical connection device (70) has at least two first connecting arms (71); and in a top view of the battery component holder (30), a first connecting arm (71) extends from a first receiving device (41) arranged in a first column (S1) to a first receiving device (41) arranged in a second column (S2), and a further first connecting arm (71) extends from the first receiving device (41) arranged in the second column (S2) to a first receiving device (41) arranged in a third column (S3).

4. Battery housing (1) according to claim 1, characterized by the following features: a first subgroup of the receiving devices (41, 42) is arranged in rows (RI, R2, R3); a second subgroup of the receiving devices (41, 42) is arranged in columns (SI, S2, S3); the electrical connection device (70) has at least two second connecting arms (72); in a top view of the battery component holder (30), the first connecting arm (71) extends from a first receiving device (41) arranged in a first row (RI) to a first receiving device (41) arranged in a second row (R2); and In a top view of the battery component holder (30), the respective second connecting arms (72) extend from a first receiving device (41) which is arranged in a first column (S1) to a second receiving device (42) which is arranged in a second column (S2).

5. Battery housing (1) according to claim 4, characterized by the following features: the electrical connection device (70) has at least two first connecting arms (71); and in a top view of the battery component holder (30), a first connecting arm (71) extends from a first receiving device (41) arranged in a first row (RI) to a first receiving device (41) arranged in a second row (R2), and a further first connecting arm (71) extends from the first receiving device (41) arranged in the second row (R2) to a first receiving device (41) arranged in a third row (R3).

6. Battery housing (1) according to one of the preceding claims, characterized by the following feature: the electrical connection device (70) has a height profile, wherein end regions of the respective second connecting arms (72) extend further into the respective second receiving devices (41, 42) of the battery component holder (30) than the first connecting arms (71) extend into the respective first receiving devices (41, 42).

7. Battery housing (1) according to one of the preceding claims, characterized by the following feature: the respective first connecting arms (71) close with the respective second connecting arms adjacent to them. Connecting arms (72) form an angle in the range of 55° to 65°, and / or in the range of 115° to 125°.

8. Battery housing (1) according to one of claims 1 to 6, characterized by the following feature: the respective first connecting arms (71) enclose an angle in the range of 85° to 95° with the respective second connecting arms (72).

9. Battery housing (1) according to one of the preceding claims, characterized by the following features: the battery component holder (30) has a number of first receiving openings (45) corresponding to the number of receiving devices (41, 42), which are arranged opposite a base surface (11) of the first battery housing component (10), and through which the respective receiving devices (41, 42) are accessible; and / or the battery component holder (30) has a number of second receiving openings (46) corresponding to the number of receiving devices (41, 42), which are arranged opposite a base surface (21) of the second battery housing component (20), and through which the respective receiving devices (41, 42) are accessible;and the respective first connecting arms (71) and / or the respective second connecting arms (72) of the electrical connecting device (70) at least partially cover the first receiving opening (45) and / or the second receiving opening (46) when viewed from above on the battery component holder (30).

10. Battery housing (1) according to claim 9, characterized by the following features: The battery component holder (30) has a number of electrically insulating partitions (38) corresponding to the number of receiving devices (41, 42), which at least partially limit the first receiving openings (45) and / or the second receiving openings (46); and the partitions (38) are each arranged in a sandwich-like manner between a receiving space of the receiving devices (41, 42) and each a first connecting arm (71) of the electrical connecting device (70).

11. Battery housing (1) according to one of the preceding claims, characterized by the following features: the battery component holder (30) has at least one positioning pin, preferably several positioning pins; the electrical connection device (70) has at least one through-opening, preferably a number of through-openings corresponding to the number of positioning pins; and the at least one positioning pin protrudes through the through-opening of the connection device, preferably all positioning pins each protrude through a through-opening.

12. Battery housing (1) according to one of the preceding claims, characterized by the following features: the battery component holder (30) has connecting means (36) for connecting to the first battery housing component (10) and / or to the second battery housing component (20); and in a top view of the battery component holder (30) at least one connecting means (36) is shown in a- in an area around a point of symmetry (SP) between at least three directly adjacent receiving devices (41, 42), in particular all connecting devices (36) are arranged in areas around respective points of symmetry (SP) between three directly adjacent receiving devices (41, 42).

13. Battery housing (1) according to one of the preceding claims, characterized in that the battery component holder (30) is connected to the first battery housing component (10) and / or to the second battery housing component (20) by means of a material connection and / or a form-fit connection and / or a force-fit connection.

14. Battery housing (1) according to one of the preceding claims, characterized in that the first battery housing component (10) and / or the second The battery housing component (20) and / or the battery component holder (30) are made of the same material or are formed from the same material or material mix.

15. Battery (100) comprising a battery housing (1) according to one of the preceding claims; and a plurality of battery components (3) each being received into a receiving device (41, 42) of the battery component holder (30).

16. Motor vehicle with a battery (100) according to claim 15, wherein the battery (100) is energy-coupled with an electric drive motor of the motor vehicle.

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