HOUSING ASSEMBLY FOR A BATTERY MODULE, ELECTRONICS HOUSING, BATTERY HOUSING, AND BATTERY MODULE

Abstract

A housing assembly (11) for a battery module (10), comprising an electronics housing (12) for electronics components having an electronics cooling channel opening (13), and comprising a battery housing (15) for battery cells having a first battery cooling channel opening (16) and a second battery cooling channel opening (17), wherein, in an assembled state of the housing assembly (11), the electronics cooling channel opening (13) is positioned adjacently to the first battery cooling channel opening (16), and a drip edge (20) partially surrounding the electronics cooling channel opening (13) is formed on the electronics cooling channel opening (13), wherein the drip edge (20) extends beyond the electronics cooling channel opening (13) in an opening direction of the electronics cooling channel opening (13). The invention also relates to an electronics housing (12), a battery housing (15), and a battery module (10).

Claims

1. A housing assembly (11) for a battery module (10), comprising an electronics housing (12) for electronics components having an electronics cooling channel opening (13), and comprising a battery housing (15) for battery cells having a first battery cooling channel opening (16) and a second battery cooling channel opening (17), wherein, in an assembled state of the housing assembly (11), the electronics cooling channel opening (13) is positioned adjacently to the first battery cooling channel opening (16), wherein a drip edge (20) partially surrounding the electronics cooling channel opening (13) is formed on the electronics cooling channel opening (13), wherein the drip edge (20) extends beyond the electronics cooling channel opening (13) in an opening direction of the electronics cooling channel opening (13).

2. The housing assembly (11) according to claim 1, wherein next to the first battery cooling channel opening (16) and/or next to the second battery cooling channel opening (17), there is formed at least one inclined fluid drainage channel (18, 19) for a defined fluid drainage from the battery housing (15).

3. The housing assembly (11) according to claim 1, wherein the drip edge (20) is designed such that a liquid drips at the drip edge (20) into the at least one fluid drainage channel (18, 19).

4. The housing assembly (11) according to claim 1, wherein the drip edge (20) has a larger radius than the electronics cooling channel opening (13) and a connecting slope is formed between the electronics cooling channel opening (13) and the drip edge (20) in a region between the electronics cooling channel opening (13) and the drip edge (20).

5. The housing assembly (11) according to claim 2, wherein the at least one fluid drainage channel (18, 19) is designed in each case in the form of an open-edge recess in the battery housing (15).

6. The housing assembly (11) according to claim 1, wherein the battery housing (15) has a base outer side (30) in the region of the first battery cooling channel opening (16) and the second battery cooling channel opening (17), wherein an opening edge (22) is formed on the first battery cooling channel opening (16) and/or on the second battery cooling channel opening (17), which opening edge (22) extends in an opening direction beyond a plane of the base outer side (30).

7. The housing assembly (11) according to claim 1, wherein the electronics housing (12) and/or the battery housing (15) are each formed in one piece and/or monolithically.

8. An electronics housing (12) for a housing assembly (11) according to claim 1, comprising an electronics cooling channel opening (13), wherein a drip edge (20) partially surrounding the electronics cooling channel opening (13) is formed on the electronics cooling channel opening (13), and wherein the drip edge (20) extends beyond the electronics cooling channel opening (13) in an opening direction of the electronics cooling channel opening (13).

9. A battery housing (15) for a housing assembly (11) according to claim 1, comprising a first battery cooling channel opening (16) and a second battery cooling channel opening (17), wherein, next to the first battery cooling channel opening (16) and/or next to the second battery cooling channel opening (17), at least one inclined fluid drainage channel (18, 19) is formed for a defined fluid drainage from the battery housing (15).

10. A battery module (10) having a housing assembly (11) according to claim 1, and having a plurality of battery cells arranged in the battery housing (15).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 constructional details and spatial arrangements, may be essential to the invention both individually and in the various combinations.

[0024] Schematically in the figures:

[0025] FIG. 1 shows a perspective view of a battery housing according to a preferred embodiment of the present invention,

[0026] FIG. 2 shows a perspective view of an electronics housing according to a preferred embodiment of the present invention,

[0027] FIG. 3 shows a sectional side view of a housing assembly according to a preferred embodiment of the present invention,

[0028] FIG. 4 shows a perspective view of the housing assembly shown in FIG. 3,

[0029] FIG. 5 shows a sectional plan view of a housing assembly according to the preferred embodiment of the present invention, and

[0030] FIG. 6 shows a perspective view of a battery module according to a preferred embodiment of the present invention.

[0031] Elements with the same function and mode of operation are each provided with the same reference signs in the figures.

DETAILED DESCRIPTION

[0032] FIG. 1 shows a monolithic battery housing 15 for a housing assembly 11 shown in FIG. 3. The battery housing has a first battery cooling channel opening 16 and a second battery cooling channel opening 17. Next to the first battery cooling channel opening 16, a first inclined fluid drainage channel 18 is formed for a defined fluid drainage from the battery housing 15. Next to the second battery cooling channel opening 17, a second inclined fluid drainage channel 19 is formed for a defined fluid drainage from the battery housing 15.

[0033] As can be seen in FIG. 1, the first fluid drainage channel 18 and the second fluid drainage channel 19 are each designed in the form of an open-edge recess in the battery housing 15 and extend around a partial radius of the battery cooling channel openings 16, 17. The battery housing 15 has a base outer side 30 in the region of the first battery cooling channel opening 16 and the second battery cooling channel opening 17, wherein an opening edge 22 is formed on the first battery cooling channel opening 16 and extends in an opening direction beyond a plane of the base outer side 30.

[0034] FIG. 2 shows a monolithic electronics housing 12 for the housing assembly 11 shown in FIG. 3. The electronics housing 12 has an electronics cooling channel opening 13, wherein a drip edge 20 partially surrounding the electronics cooling channel opening 13 is formed on the electronics cooling channel opening 13, and wherein the drip edge 20 extends beyond the electronics cooling channel opening 13 in an opening direction of the electronics cooling channel opening 13. The drip edge 20 is formed such that a liquid such as condensation on the outside of the electronics housing 12 in the region of the drip edge 20 can drip from the latter into the at least one fluid drainage channel 18, 19. The drip edge 20 has a larger radius than the electronics cooling channel opening 13. In a region between the electronics cooling channel opening 13 and the drip edge 20, a connecting slope is formed between the electronics cooling channel opening 13 and the drip edge 20, and accordingly has a smaller radius than the drip edge 20 and a larger radius than the electronics cooling channel opening 13.

[0035] FIG. 3 shows a housing assembly 11 for a battery module 10 shown in FIG. 6 in a sectional side view. The housing assembly 11 comprises the electronics housing 12 for electronics components and also comprises the battery housing 15 for battery cells. In the shown assembled state of the housing assembly 11, the electronics cooling channel opening 13 or an end portion of a coolant bore 23 or a coolant channel of the electronics housing 12 is positioned adjacently to the first battery cooling channel opening 16 or to an end portion of a coolant bore 23 of the battery housing 15. For a coolant connection between the electronics housing 12 and the battery housing 15, the housing assembly 11 comprises a connecting flange 24. The connecting flange 24 has an outer flange side 25, a tube portion 26 for the coolant connection, and a fastening portion 27 for producing a mechanical connection between the electronics housing 12 and the battery housing 15. The flange outer side 25 is designed for conducting a liquid such as condensed water on the flange outer side 25 into the first fluid drainage channel 18 and the second fluid drainage channel 19. The connecting flange 24 is positioned in the coolant bore 23 of the battery housing 15 by means of sealing member 14. As can further be seen with reference to FIG. 3, the contact surface of the connecting flange 24 on the base outer side 30 on the battery housing 15 at the interfaces or transitions between the electronics housing 12 and the battery housing 15 can achieve only a minimal gap, which protects the sealing element 14, for example, against pressurized water by a high-pressure cleaner. Condensate that infiltrates the gap and thus reaches the sealing element despite these measures can still dry off effectively through this gap.

[0036] FIG. 4 shows an assembled state of the housing assembly 11, in which the desired fluid drainage is shown on the outside of the housing assembly 11. As can be seen by looking at FIG. 4, fluids such as water 28, for example condensation or cleaning water, can drain away from the housing assembly 11 via the electronics housing 12, the drip edge 20 and the fluid drainage channels 18, 19 with almost no residue. This can also be seen in a plan view in FIG. 5. In FIG. 5, it can also be seen that a gap between the battery housing 15 and the connecting flange 24 is particularly small, since the fastening portion 27 of the connecting flange 24 circumferentially bears against the horizontal surface or the base outer surface 30 of the battery housing 15.

[0037] FIG. 6 shows a battery module 10 with a housing assembly 11 as described above. The housing assembly 11 comprises an electronics housing 12 and a battery housing 15 for housing a plurality of battery cells. The invention allows further design principles in addition to the embodiments shown. That is to say, the invention is not to be considered as limited to the exemplary embodiments explained with reference to the figures.