BATTERY HOUSING PART, BATTERY MODULE, AND METHOD FOR PRODUCING A BATTERY HOUSING PART

Abstract

A battery housing part (11) for a battery housing (10) of a battery module (30) for accommodating battery cells, having a cooling channel (12) with a cooling channel bottom (13), a cooling channel wall (14) for delimiting the cooling channel (12), and flow-disturbing elements (15) for disturbing a coolant flow in the cooling channel (12), the flow-disturbing elements (15) projecting in a height direction (21) in a projection-like manner from the cooling channel bottom (13), and a part of the flow-disturbing elements (15) being designed in the form of normal elements (15a) and another part of the flow-disturbing elements (15) being designed in the form of supporting elements (15b), the supporting elements (15b) being designed to be higher in the height direction (21) than the normal elements (15a) in order to support a covering means (19) covering the cooling channel (12).

Claims

1. A battery housing part (11) for a battery housing (10) of a battery module (30) for accommodating battery cells, having a cooling channel (12) with a cooling channel bottom (13), a cooling channel wall (14) for delimiting the cooling channel (12), and flow-disturbing elements (15) for disturbing a coolant flow in the cooling channel (12), the flow-disturbing elements (15) projecting in a height direction (21) in a projection-like manner from the cooling channel bottom (13), wherein a part of the flow-disturbing elements (15) is designed in the form of normal elements (15a) and another part of the flow-disturbing elements (15) is designed in the form of supporting elements (15b), the supporting elements (15b) being designed to be higher than the normal elements (15a) in the height direction (21) in order to support a covering member (19) covering the cooling channel (12).

2. The battery housing part (11) according to claim 1, further comprising a plurality of supporting element groups (16), each having a plurality of supporting elements (15b) formed adjacently to each other, the supporting element groups (16) being formed at a distance from each other, with normal elements (15a) between the supporting element groups (16).

3. The battery housing part (11) according to claim 1, wherein the flow-disturbing elements (15) are in the form of pins and/or pegs.

4. The battery housing part (11) according to claim 1, wherein a flat bearing plateau (17) is formed on one end face of each of the supporting elements (15b) at a distance from the cooling channel bottom (13).

5. The battery housing part (11) according to claim 1, wherein the flow-disturbing elements (15) taper conically or concavely away from the cooling channel bottom (13).

6. The battery housing part (11) according to claim 1, wherein the supporting elements (15b) are higher than the normal elements (15a) in the height direction (21) in a range between 0.2 mm and 1 mm.

7. The battery housing part (11) according to claim 1, wherein the supporting elements (15b) have a same height as the cooling channel wall (14) in the height direction (21) starting from the cooling channel bottom (13).

8. The battery housing part (11) according to claim 1, wherein the cooling channel (12), including the cooling channel bottom (13), the cooling channel wall (14), and also the flow-disturbing elements (15), is formed in one piece and/or monolithically.

9. A battery module (30) having a battery housing part (11) according to claim 1, a plurality of battery cells arranged in the battery housing part (11), and a covering member (19) for covering the cooling channel (12), wherein the covering member (19) is welded to the cooling channel wall (14) and is distanced from the normal elements (15a).

10. A method for producing a battery housing part (11) according to claim 1, comprising the steps of: providing a housing main body (18) having the cooling channel (12) with the cooling channel bottom (13), the cooling channel wall (14) for delimiting the cooling channel (12), and the flow-disturbing elements (15) for disturbing a coolant flow in the cooling channel (12), wherein the flow-disturbing elements (15) project in a height direction (21) in a projection-like manner from the cooling channel bottom (13), a part of the flow-disturbing elements (15) is designed in the form of normal elements (15a), another part of the flow-disturbing elements (15) is designed in the form of supporting elements (15b), and the supporting elements (15b) are designed to be higher in the height direction (21) than the normal elements (15a) and, starting from the cooling channel bottom (13), higher than the cooling channel wall (14), and removing end portions (20) of the various supporting elements (15b) so that the height of the supporting elements (15b), in order to support a covering member (19) for covering the cooling channel (12), is equal to the height of the cooling channel wall (14) in the height direction (21).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Further measures improving the invention will become apparent from the following description of various exemplary embodiments of the invention, which are shown schematically in the figures. All features and/or advantages arising from the claims, the description or the figures, including structural details and spatial arrangements, may be essential to the invention both individually and in the various combinations.

[0025] In the figures, schematically in each case:

[0026] FIG. 1 shows a battery housing part with a covering means to be attached thereto according to a preferred embodiment of the present invention,

[0027] FIG. 2 shows the battery housing part according to the preferred embodiment in a plan view,

[0028] FIG. 3 shows the battery housing part according to the preferred embodiment in a detailed view,

[0029] FIG. 4 shows a sectional view showing a detail according to the invention,

[0030] FIGS. 5 and 6 show illustrations for explaining a method according to the invention, and

[0031] FIG. 7 shows a battery module with a battery housing part according to the preferred embodiment of the invention.

DETAILED DESCRIPTION

[0032] Elements with the same function and mode of operation are each provided with the same reference signs in the figures.

[0033] FIG. 1 shows a battery housing part 11 for a battery housing 10 of a battery module 30, shown in FIG. 7, for accommodating battery cells. The battery housing part 11 is formed in one piece in the form of a die-cast aluminum component and comprises a cooling channel 12 with a cooling channel bottom 13, a cooling channel wall 14 for delimiting the cooling channel 12, and flow-disturbing elements 15 in the form of pins or pegs for disturbing or defining a coolant flow in the cooling channel 12. The flow-disturbing elements 15 project in a height direction 21 in a projection-like manner from the cooling channel bottom 13. As shown in FIG. 1, the flow-disturbing elements 15 are formed partly as normal elements 15a and partly as supporting elements 15b. To support a covering means 19 covering the cooling channel 12, the supporting elements 15b are designed to be higher than the normal elements 15a in the height direction 21. More specifically, the supporting elements 15b shown are designed to be higher than the normal elements 15a in the height direction 21 by about 0.5 mm. In an assembled state of the battery housing 10, the covering means 19 for covering the cooling channel 12 is welded to the cooling channel wall 14, contacts the supporting elements 15b, and is distanced from the normal elements 15a.

[0034] As shown in FIG. 2, the supporting elements 15b are provided in four supporting element groups 16. Each supporting element group 16 has seven supporting elements 15b formed adjacently to each other. The supporting element groups 16 are circular or hexagonal in plan view. The supporting element groups 16 are formed in each case with normal elements 15a between the supporting element groups 16, distanced from one another in four corner regions of the cooling channel 12.

[0035] FIG. 3 shows the battery housing part 11 in further detail. Looking at FIG. 3, it can be seen in particular that a flat bearing plateau 17 is formed on one end face of the supporting elements 15b at a distance from the cooling channel bottom 13 in each case. In addition, it can be recognized that the flow-disturbing elements 15 taper away from the cooling channel bottom 13 conically, or away from the cooling channel bottom 13 initially concavely and conically. In the cross-section according to FIG. 4, the difference in height between a supporting element 15b and a normal element 15 can be seen. In addition, it can be seen there that the supporting elements 15b have the same height as the cooling channel wall 14 in the height direction 21 starting from the cooling channel bottom 13.

[0036] With reference to FIGS. 5 and 6, a method for producing a battery housing part 11 as described above is then explained. As shown in FIG. 5, the housing main body 18 is first provided for this purpose. The housing main body 18 has a cooling channel 12 with a cooling channel bottom 13, a cooling channel wall 14 for delimiting the cooling channel 12, and flow-disturbing elements 15 in the form of normal elements 15a and supporting elements 15b or supporting elements 15b which are initially still superelevated. The supporting elements 15b are or will be higher than the normal elements 15a in the height direction 21 and, starting from the cooling channel bottom 13, also higher than the cooling channel wall 14. As shown in FIG. 6, in order to produce the desired battery housing part 11, the end portions 20 of the various supporting elements 15b are then removed, in particular milled off, in such a way that the height of the supporting elements 15b, in order to support the covering means 19 for covering the cooling channel 12, in the height direction 21 is equal to the height of the cooling channel wall 14. However, the shortened supporting elements 15b are still higher than the normal elements 15a.

[0037] FIG. 7 illustrates a battery module 30 with a battery housing part 11 as described above. The battery module 30 has an electronics housing 22 for accommodating electronics components and the battery housing 10 for accommodating a plurality of battery cells.

[0038] The invention permits further design principles in addition to the embodiments illustrated. That is to say, the invention is not to be considered as limited to the exemplary embodiments explained with reference to the figures.