US 10,539,246 B2 · Pressure equalization element having a membrane, housing, battery cell module, and motor vehicle

Abstract

A pressure equalization element for a housing, such as a lithium-ion accumulator, includes a membrane and at least two parallel non-return valves. The membrane is connected in series to the non-return valves, which are positioned opposite each other. The non-return valves are formed by two valve plates and a valve membrane. The plates define at least one outlet chamber and at least one inlet chamber which each have a respective entry opening and exit opening. The membrane is positioned between the plates and includes at least two valve dampers, the entry openings of the inlet and outlet chambers sealed by a respective damper. Pressure equalization elements of this type can thus be cost-effectively and logically implemented via few components, while avoiding loose components. Such elements can be included in, for example, a housing, battery cell module, or motor vehicle.

Claims12

Dependent claims

A pressure equalization element for a housing, comprising:

at least two non-return valves arranged in parallel and positioned in opposition to each other, the at least two non-return valves formed by:
two valve plates that define:
at least one inlet chamber with an inlet opening and an outlet opening;
and
at least one outlet chamber with an inlet opening and an outlet opening;
and
a valve membrane positioned between the two valve plates, the valve membrane including at least two valve caps, each valve cap sealing off a respective inlet opening of the at least one inlet chamber and at least one outlet chamber, the valve membrane further including a circumferential O-ring;
a membrane connected in series with the at least two non-return valves;
and
a protective cap defining a hollow interior,
wherein the membrane and the two valve plates are received within the hollow interior, and
wherein the circumferential O-ring is arranged in direct contact with the protective cap.

9 more elements

Dependencies are inferred from the claim text.

Pressure equalization element having a membrane, housing, battery cell module, and motor vehicle

Life of this patent

Pressure equalization element having a membrane, housing, battery cell module, and motor vehicle

Life of this patent

Abstract

Claims12