Protective cover for protecting a ventilation device of a battery housing

1 . A protective cover for protecting a ventilation device of a battery housing, wherein the ventilation device comprises an airflow opening which is arranged to provide an airflow between an inside of the battery housing and an external environment, and wherein the battery housing and/or the ventilation device comprises a first flange portion which extends around the airflow opening, and which further extends in a radially outward direction with respect to the airflow opening,

the protective cover comprising:

an airflow duct extending between a first opening and a second opening, wherein the first opening of the airflow duct is arranged to be fluidly connected to the airflow opening of the ventilation device and wherein the second opening is arranged to be fluidly connected to the external environment,

an attachment portion associated with the first opening for attaching the protective cover to the first flange portion so that the protective cover covers the airflow opening, wherein the attachment portion, when being attached to the first flange portion, extends around the airflow opening,

wherein the protective cover comprises at least two separate parts which are releasably attachable to each other and arranged so that the attachment portion can be split into at least two separate attachment sections to allow the protective cover to be attached to and released from the first flange portion.

2 . The protective cover according to claim 1 , wherein the at least two separate parts are further arranged to form the airflow duct when being attached to each other.

3 . The protective cover according to claim 1 , wherein the at least two separate parts are two halves of the protective cover which are releasably attachable to each other.

4 . The protective cover according to claim 1 , wherein the attachment portion comprises a second and a third flange portion which extend around an inner perimeter surface of the attachment portion, and which further extend in a radially inward direction thereof, corresponding to the radial direction of the airflow opening when the protective cover is attached to the first flange portion, and wherein the second and the third flange portions are offset from each other, as seen in an axial direction of the protective cover, the axial direction being perpendicular to the radial direction of the protective cover, thereby forming a gap therebetween so that the first flange portion can be accommodated in-between the second and the third flange portions.

5 . The protective cover according to claim 4 , wherein the second flange portion comprises protrusions which extend in the radially inward direction, wherein the protrusions are separated by intermediate recesses which extend radially outward so as to allow the protective cover to be attached to the first flange portion in more than one predefined angular position with respect to the first flange portion.

6 . The protective cover according to claim 5 , wherein the protrusions are formed as teeth, such as teeth with sharp edges, for example triangular shaped protrusions, and/or as smooth outwardly bulging protrusions, such as curved-shaped portions.

7 . The protective cover according to claim 1 , wherein the airflow duct comprises a first airflow duct extension associated with the first opening and a second airflow duct extension associated with the second opening, wherein the first airflow duct extension extends in an axial direction of the protective cover, corresponding to an axial direction of the airflow opening when the protective cover is attached to the first flange portion, and wherein the second airflow duct extension is angled with respect to the first airflow duct extension, such as angled so that the second airflow duct extension extends substantially in the radial direction.

8 . The protective cover according to claim 1 , wherein the at least two separate parts further comprises fastening means for attaching the at least two separate parts to each other.

9 . The protective cover according to claim 8 , wherein the fastening means comprises any one of a screw, a bolt, a nut, a cable tie and a snap-fit connection member.

10 . The protective cover according to claim 1 , further comprising a sealing member provided in an attachment interface in-between the at least two separate parts.

11 . The protective cover according to claim 1 , wherein the at least two separate parts are arranged so that respective portions thereof overlap each other when the at least two separate parts are attached to each other.

12 . A ventilation arrangement for a battery housing, comprising a ventilation device, wherein the ventilation device is arranged to provide an airflow through an airflow opening between an inside of the battery housing and an external environment, and wherein the battery housing and/or the ventilation device comprises a first flange portion which extends around the airflow opening, and which further extends in a radially outward direction with respect to the airflow opening, and wherein the ventilation arrangement further comprises a protective cover according to claim 1 .

13 . The ventilation arrangement according to claim 12 , wherein the first flange portion comprises corresponding protrusions configured to be in meshing engagement with protrusions of the second flange portion.

14 . A battery housing comprising a ventilation arrangement according to claim 12 .

15 . A vehicle comprising a battery housing according to claim 14 .