Battery arrangement and motor vehicle having a battery arrangement

Abstract

The present invention relates to a battery device (1) having a battery housing (2) with a base (3), the base (3) being designed to be open at its two opposite end regions (4) and having two battery housing covers (8) which are respectively connectably arranged at the two opposite end regions (4) on the base (3). At least two battery cavities (5) are provided in the battery housing (2) for arranging battery cells. The base (3) has at least one partition wall (6) for separating the battery cavities (5), the partition wall extending generally along its longitudinal extension from one end region (4) of the base (3) to the other end region (4). The battery housing cover (8) has an open receiving portion (9) into which the corresponding partition wall (6) can be inserted. The receiving portion (9) engages with the partition wall (6) in the inserted state in a direction transverse to the longitudinal extension of the partition wall (6).

Description

Technical Field

[0001] The present invention relates to a battery device, particularly a battery device for a motor vehicle, and a motor vehicle having such a battery device. Background Technology

[0002] Battery devices for motor vehicles are known in the prior art. These battery devices have a battery casing with individual battery cells disposed therein. The battery casing has a base and a battery casing cover, which is placed on the base of the battery casing to seal the battery casing.

[0003] However, in the event of an accident, the battery casing cover may be subjected to force, causing it to be squeezed and intrude into the internal space of the battery casing. This could result in the battery casing becoming unsealed, allowing water or contaminants to enter, and there is also the possibility that at least one individual battery cell may be damaged, potentially leading to a malfunction and / or short circuit.

[0004] DE 10 2019 111 769 A1 discloses a battery device with a battery housing having a base and battery housing covers connected to the base. The battery housing covers have a deformable region on the side opposite to the base, such that deformation caused by introduced forces occurs outside the battery housing and the battery housing covers do not intrude into the internal space of the battery housing. However, this results in a complex structure that requires a certain amount of structural space. Summary of the Invention

[0005] The object of this invention is to provide a battery device designed to be safe even under external forces. A further object is to provide a motor vehicle that improves the safety of the battery device.

[0006] The purpose of the battery device is achieved through the following features.

[0007] Embodiments of the present invention relate to a battery device having a battery housing with a base, wherein the base is designed to be open at its two opposing end regions, and two battery housing covers are provided therein, which are correspondingly connectably arranged at the two opposing end regions to close the battery housing. At least two battery cavities are provided in the battery housing for accommodating individual battery cells. The base has at least one partition wall to separate the battery cavities, the at least one partition wall extending generally longitudinally from one end region of the base to the other end region of the base. At least one or both of the battery housing covers have an open receiving portion on their respective side facing the partition wall, the corresponding partition wall being inserted into or insertable into the receiving portion, wherein the receiving portion, in the inserted state, engages with the partition wall in a direction transverse to the longitudinal extension of the partition wall. This achieves that, in the event of an accident, when a force is applied to the battery housing cover, the battery housing cover is supported on the partition wall in the longitudinal direction, and simultaneously the receiving portion supports the partition wall in a transverse direction relative to the longitudinal direction of the partition wall, thereby strengthening or protecting the partition wall from bending. Advantageously, the partition wall is already engaged with the receiving part under normal conditions, or the partition wall is inserted into the receiving part due to force during an accident, in such a way that the receiving part is displaced toward the partition wall.

[0008] Similarly, in another advantageous embodiment, it is convenient to have a gap between the partition wall and the battery housing cover having its receiving portion, so that the partition wall does not engage with the receiving portion when the battery housing cover is closed and when no external force is applied to the battery housing cover. Thus, thermal separation between the partition wall and the receiving portion can be achieved during normal operation, so that the partition wall is only received by the receiving portion in the event of an accident and is prevented from bending.

[0009] In another embodiment, it is equally advantageous that the partition wall and the battery housing cover are arranged relative to each other, such that the partition wall engages with the receiving portion when the battery housing cover is closed and without external force acting on the battery housing cover. Therefore, the partition wall can also be received and supported by the receiving portion during normal operation. This also reduces intrusion into the housing cover when forces are applied.

[0010] Another advantage is that the receiving part is designed as a groove with two wall areas extending from the battery housing cover and a groove bottom disposed between these two wall areas, wherein the ends of the partition wall are disposed between the wall areas of the receiving part in the engaged state. This achieves a stable design for the receiving part, thereby enabling reliable lateral support and reliably preventing the partition wall from bending under force (e.g., in the event of an accident).

[0011] In another embodiment, it is equally convenient that the end of the partition wall rests against or is spaced apart from the bottom of the groove in the engaged state. This also helps to compensate for thermal expansion when the temperature rises.

[0012] Another advantage is that the battery casing cover forms a protrusion that serves as a receiving portion, specifically forming a protruding wall area and a groove bottom disposed between the wall areas. This allows the receiving portion to be designed to be stable, thereby enabling stable support at the partition wall and stable protection of the partition wall from bending.

[0013] In another embodiment, it is advantageous that the substrate is designed as an extruded part, particularly an extruded part made of metal. Especially when the substrate is designed as an aluminum extruded part, the battery casing can be realized more simply and cost-effectively.

[0014] A particular advantage is that the battery casing cover is designed as a forged part. This allows for a cost-effective yet stable design, preventing the battery casing cover from being pressed in so easily.

[0015] The purpose of a motor vehicle is achieved through the following characteristics.

[0016] Embodiments of the present invention relate to a motor vehicle having a battery device according to the present invention.

[0017] In an advantageous embodiment, it is equally convenient that the motor vehicle is designed with a body having laterally arranged bottom beams, wherein the battery pack is arranged between these two bottom beams, and / or connected to one of these bottom beams by means of respective battery housing covers. This allows for a reliable arrangement of the battery pack.

[0018] In general, the present invention discloses the technical solutions described in 1 and 9 below, and the technical solutions described in 2-8 and 10 below are preferred technical solutions:

[0019] 1. A battery device (1) having a battery housing (2) with a base (3), wherein the base (3) is designed to be open at its two opposite end regions (4), wherein two battery housing covers (8) are provided, the two battery housing covers being correspondingly connectably arranged at the two opposite end regions (4) at the base (3) to close the battery housing (2), wherein at least two battery cavities (5) are provided in the battery housing (2) for arranging battery cells, wherein the base (3) has at least one partition wall (6) for separating the battery cavities (5). 5) The at least one partition wall extends generally along its longitudinal extension from one end region (4) of the base (3) to the other end region (4) of the base (3), characterized in that at least one or both battery housing covers (8) have an open receiving portion (9) on their respective side facing the partition wall (6), into which the corresponding partition wall (6) is inserted or can be inserted, wherein the receiving portion (9) engages with the partition wall (6) in the inserted state in a direction transverse to the longitudinal extension of the partition wall (6).

[0020] 2. The battery device (1) according to the preceding 1 is characterized in that a gap (14) is provided between the partition wall (6) and the battery housing cover (8) having its receiving portion (9), such that the partition wall (6) does not engage with the receiving portion (9) when the battery housing cover (8) is closed and when no external force is applied to the battery housing cover (8).

[0021] 3. The battery device (1) according to the preceding 1, characterized in that the partition wall (6) and the battery housing cover (8) are arranged relative to each other such that the partition wall (6) engages with the receiving part (9) in the closed state of the battery housing cover (8) and without external force acting on the battery housing cover (8).

[0022] 4. The battery device (1) according to the preceding 1, 2 or 3 is characterized in that the receiving part (9) is designed as a groove and has two wall regions (10) extending from the battery housing cover (8) and a groove bottom (11) disposed between the two wall regions, wherein the end (12) of the end side of the partition wall (6) is disposed between the wall regions (10) of the receiving part (9) in the engaged state.

[0023] 5. The battery device (1) according to the aforementioned 4 is characterized in that the end (12) of the end side of the partition wall (6) is attached to or spaced apart from the bottom of the groove (11) in the engaged state.

[0024] 6. The battery device (1) according to any one of the preceding 1-5 is characterized in that the battery housing cover (8) forms a protrusion (13), the protrusion forming the receiving portion (9), and in particular forming the protruding wall region (10) and the groove bottom (11) arranged between the wall regions.

[0025] 7. The battery device (1) according to any one of 1-6 above, characterized in that the substrate (3) is designed as an extruded part, especially an extruded part made of metal.

[0026] 8. The battery device (1) according to any one of the preceding 1-7, characterized in that the battery housing cover (8) is designed as a forging.

[0027] 9. A motor vehicle (15) having a battery device (1) according to at least one of the preceding 1-8.

[0028] 10. The motor vehicle (15) according to the preceding 9, the motor vehicle having a body (16) having laterally arranged bottom beams (17), wherein the battery device (1) is arranged between the bottom beams (17) and / or connected to one of the bottom beams (17) by means of a corresponding battery housing cover (8). Attached Figure Description

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. In the drawings:

[0030] Figure 1 A schematic perspective view of a battery device with a battery casing according to the present invention is shown.

[0031] Figure 2 It shows according to Figure 1 A schematic perspective view of the base of the battery casing of the battery device.

[0032] Figure 3 It shows according to Figure 1 A schematic perspective view of the battery housing cover of the battery device.

[0033] Figure 4 It shows according to Figure 1 A schematic cross-sectional view of the base of the battery housing of the battery device, having a battery housing cover placed thereon, and

[0034] Figure 5 A schematic diagram of a motor vehicle having a battery device according to the present invention is shown. Detailed Implementation

[0035] Figures 1 to 4The battery device 1 according to the invention is shown in different schematic views to illustrate the invention.

[0036] The battery device 1 according to the invention has a battery housing 2 with a substrate 3. Battery cells (not shown) are arranged in the battery housing 2, and optionally, electronic control units and / or sensors (also not shown) may also be arranged therein.

[0037] The base 3 of the battery casing 2 is designed to be open at its two opposite end regions 4. Here, the base 3 can be designed as an extruded part, especially an extruded part made of metal. Exemplarily, the base 3 can be made of aluminum, especially as an aluminum alloy extruded part.

[0038] according to Figure 2 The substrate 3 is designed with a rectangular cross-section and has two battery cavities 5. However, this design can also be formed in other ways, such as having more than two battery cavities 5 and / or having alternative cross-sections.

[0039] The two battery cavities 5 are separated from each other by a partition wall 6, which exemplarily traverses the interior space of the substrate 3 in its longitudinal direction. Here, the partition wall 6 also abuts the sidewalls 7 of the substrate 3 on both sides. Advantageously, the partition wall 6 is integrally formed with the substrate 3. The partition wall 6 can also be connected to the substrate 3.

[0040] The at least two battery cavities 5 located in the battery housing 2 are specifically used for arranging battery cells. For this purpose, the substrate 3 has at least one partition wall 6 to separate the battery cavities 5, the at least one partition wall extending generally longitudinally from one end region 4 of the substrate 3 to the other end region 4 of the substrate 3.

[0041] Furthermore, two battery housing covers 8 are provided at both end regions 4, and each end region 4 of the base 3 is provided with a battery housing cover 8. The battery housing cover 8 can be placed on the end region 4 of the base 3 and sealed and fastened to the base 3. The battery housing cover 8 can be connectedly arranged at one of the two opposing end regions 4 at the base 3 to close the battery housing 2.

[0042] Here, the at least one partition wall 6 is used not only for dividing the internal space of the battery housing 2, but also for the stability of the battery housing 2 under external force.

[0043] To support the battery housing cover 8 against the partition wall 6 and to support the partition wall 6 against bending under external forces, at least one or both battery housing covers 8 have an open receiving portion 9 on their respective sides facing the partition wall 6. The receiving portion 9 is designed as a groove and is designed to be open towards the partition wall 6, such that the receiving portion 9 is arranged and designed so that, depending on the design of the partition wall 6 and the receiving portion 9, the corresponding partition wall 6 can be inserted into or is insertable into the receiving portion 9. Here, the receiving portion 9 is designed such that the partition wall 6, in the inserted state, engages with the receiving portion 9 in a direction transverse to the longitudinal extension of the partition wall 6. This provides lateral support for the partition wall through the receiving portion 9, which should make bending of the partition wall 6 in the engagement area of ​​the partition wall 6 more difficult or prevent such bending from occurring.

[0044] Figure 3 and Figure 4 As shown, the receiving part 9 is designed as a groove and has two wall regions 10 extending from the battery housing cover 8 and a groove bottom 11 arranged between the two wall regions.

[0045] Therefore, in the engaged state, the partition wall 6 can be received in the receiving portion 9 in such a way that the end portion 12 of the partition wall 6 is arranged between the wall regions 10 of the receiving portion 9 in the engaged state. If a lateral force is applied to the partition wall 6, the partition wall 6 can be laterally supported at the wall region 10.

[0046] The end 12 of the partition wall 6 can also be attached to or spaced apart from the bottom of the groove 11 in the engaged state.

[0047] according to Figure 4 Particularly advantageous is that the battery casing cover 8 forms a protrusion 13, which forms a receiving portion 9, namely, forming a protruding wall region 10 and a groove bottom 11 arranged between the wall regions.

[0048] In an advantageous embodiment, it is convenient that a gap 14 is provided between the partition wall 6 and the battery housing cover 8 having its receiving portion 9, so that the partition wall 6 does not engage with the receiving portion 9 when the battery housing cover 8 is closed and without external force acting on the battery housing cover 8. See [reference needed] Figure 4 This means that as long as the battery housing cover 8 is not subjected to external forces (e.g., caused by an accident), there is no or no need for mechanical and thermal connections between the partition wall 6 and the battery housing cover 8.

[0049] In an alternative design, it is equally advantageous that the partition wall 6 and the battery housing cover 8 are arranged relative to each other, such that the partition wall 6 engages with the receiving portion 9 when the battery housing cover 8 is closed and without any external force acting on the battery housing cover 8.

[0050] To achieve the required stability of the battery housing cover 8, the battery housing cover is advantageously designed as a forging, especially a forging made of metal.

[0051] The partition wall 6 may extend straight at its end 12, or it may have a profile, particularly being milled. From Figure 2 As can be seen, the end portion 12 on the end side of the partition wall 6 is designed in a trapezoidal shape in the central region. This allows the partition wall 6 to be easily inserted into the receiving portion 9. Alternatively, the end portion 12 on the end side can also be designed in other forms.

[0052] Figure 5 A motor vehicle 15 is schematically shown, having a body 16 with two opposing underbeams 17. A battery 1 is arranged between the two underbeams 17, wherein the battery assembly 1 can extend from one underbeam 17 to the other underbeam 17.

[0053] Here, the battery 1 can be connected to one of the bottom beams 17 by means of the respective battery housing cover 8. For this purpose, a retaining device 18 can be provided at the battery housing cover 8.

[0054] According to the invention, the design of the receiving portion for receiving the partition wall 6 supports the partition wall 6 itself and simultaneously provides sufficient stability for the battery housing cover 8 while reducing material usage.

[0055] According to the present invention, one battery housing cover 8 may be designed according to the present invention, or both battery housing covers 8 may be designed according to the present invention.

[0056] List of reference numerals

[0057] 1. Battery device

[0058] 2. Battery casing

[0059] 3. Matrix

[0060] 4. End region

[0061] 5 Battery compartments

[0062] 6. Partition wall

[0063] 7. Sidewalls

[0064] 8. Battery casing cover

[0065] 9. Reception Department

[0066] 10 Wall Area

[0067] 11. Bottom of the tank

[0068] 12 ends

[0069] 13. Protrusion

[0070] 14 gaps

[0071] 15 Motor vehicles

[0072] 16. Body

[0073] 17 Bottom Beam

[0074] 18 Holding devices

Claims

1. A battery device (1) having a battery housing (2) with a base (3), wherein the base (3) is designed to be open at its two opposing end regions (4), wherein two battery housing covers (8) are provided, the two battery housing covers being correspondingly connectably arranged at the two opposing end regions (4) at the base (3) to close the battery housing (2), wherein at least two battery cavities (5) are provided in the battery housing (2) for accommodating battery cells, wherein the base (3) has at least one partition wall (6) for separating the battery cavities (5), the at least one partition wall extending generally longitudinally from one end region (4) of the base (3) to the other end region (4) of the base (3), characterized in that, At least one or both of the battery housing covers (8) have an open receiving portion (9) on their respective side facing the partition wall (6), into which the corresponding partition wall (6) is inserted or can be inserted, wherein the receiving portion (9) engages with the partition wall (6) in the direction transverse to the longitudinal extension of the partition wall (6) in the inserted state. A gap (14) is provided between the partition wall (6) and the battery housing cover (8) having its receiving portion (9), such that the partition wall (6) does not engage with the receiving portion (9) when the battery housing cover (8) is closed and no external force is applied to the battery housing cover (8).

2. The battery device (1) according to claim 1, characterized in that, The receiving part (9) is designed as a groove and has two wall regions (10) extending from the battery housing cover (8) and a groove bottom (11) arranged between the two wall regions, wherein the end (12) of the end side of the partition wall (6) is arranged between the wall regions (10) of the receiving part (9) in the engaged state.

3. The battery device (1) according to claim 2, characterized in that, The end (12) of the partition wall (6) is attached to or spaced apart from the bottom (11) of the groove in the engaged state.

4. The battery device (1) according to claim 2, characterized in that, The battery housing cover (8) forms a protrusion (13), which forms the receiving portion (9).

5. The battery device (1) according to claim 2, characterized in that, The battery housing cover (8) forms a protrusion (13), which forms an extended wall region (10) and a groove bottom (11) arranged between the wall regions.

6. The battery device (1) according to any one of claims 1 to 5, characterized in that, The substrate (3) is designed as an extruded part.

7. The battery device (1) according to any one of claims 1 to 5, characterized in that, The substrate (3) is designed as an extruded part made of metal.

8. The battery device (1) according to any one of claims 1 to 5, characterized in that, The battery casing cover (8) is designed as a forging.

9. A motor vehicle (15) having a battery device (1) according to any one of claims 1-8.

10. The motor vehicle (15) according to claim 9, the motor vehicle having a body (16) having laterally arranged bottom beams (17), wherein the battery device (1) is arranged between the bottom beams (17) and / or connected to one of the bottom beams (17) by means of a respective battery housing cover (8).

Images