Pressure equalization device

19:

• The pressure equalization device of claim 18, wherein:
• the cutting element includes a deflection piece bearing against the diaphragm in at least one operating position of the diaphragm.

20:

• The pressure equalization device of claim 19, wherein:
• the deflection piece includes a surface bearing against the diaphragm when an equal ambient pressure is present in both the interior and the exterior of the housing.

21:

• The pressure equalization device of claim 19, wherein:
• the deflection piece and/or the spring section are engaged with the diaphragm in a form-fitting manner.

22:

• The pressure equalization device of claim 18, wherein:
• the cutting element is integrally connected to the housing.

24:

• The pressure equalization device of claim 23, wherein:
• the cutting element includes first and second rims on opposite sides of the cutting element, the rims laterally delimiting the cutting element, wherein the first and second rims converge towards each other in a direction from the circumferential inner panel towards a free end of the cutting element along at least part of a length of the cutting element.

25:

• The pressure equalization device of claim 18, wherein:
• at least a portion of the cutting element forms a blade.

28:

• The pressure equalization device of claim 18, further comprising:
• a travel limiter including a stop spaced from the cutting element in a direction towards the exterior of the housing, the travel limiter being configured such that the cutting element strikes against the stop when the diaphragm is deformed.

29:

• The pressure equalization device of claim 28, wherein:
• the travel limiter includes a connection section integrally connected to the housing.

31:

• The pressure equalization device of claim 18, wherein:
• the housing includes a mounting surface for mounting the pressure equalization device on the battery housing, and a circumferential sealing section on the mounting surface.

32:

• The pressure equalization device of claim 31, wherein:
• the circumferential sealing section includes a circumferential seal, the circumferential seal being a separate component from the mounting surface.

33:

• The pressure equalization device of claim 31, wherein:
• the circumferential sealing section includes a circumferential energy director protrusion formed integrally on the mounting surface.

34:

• The pressure equalization device of claim 18, wherein:
• the housing includes an integrally formed cover extending circumferentially around the gas passage opening and projecting radially outwards on the housing.

35:

• The pressure equalization device of claim 18, wherein:
• the housing includes an integrally formed connector protruding towards the exterior of the housing, the connector being connected to the gas passage opening in a gas-conveying manner, the connector forming an outlet opening.

36:

• The pressure equalization device of claim 18, wherein:
• the housing includes an integrally formed mounting part protruding towards the interior of the housing, the mounting part including a threaded section for connection of the pressure equalization device to the battery housing, the mounting part including an inner panel delimiting a gas passage communicated with the gas passage opening in a gas-conveying manner.