| 摘要 |
<p>A lithium-ion or polymer-ion battery or generally a battery with electrolyte that is incompatible with water. The battery has a battery cell and a gas-tight casing around the battery cell. A vent is arranged in the casing and configured to allow exit of gases from the battery cell. The vent contains a body with a circumferential wall defining an external surface and a space within the body. The external surface provides a sealing surface configured for hermetic sealing the vent to the casing. The vent further contains a gas separation element for passing through gases from the battery cell and for substantially inhibiting electrolyte of the battery cell from passing through, configured to divide a given portion of the space defined by the circumferential wall into a first chamber and a second chamber. The vent also contains a water separation element within the second chamber, which water separation element further defines the second chamber and substantially prevents entry of water as liquid or humid air through the second chamber to the gas separation element. The vent is configured to enable release of gases from within the battery cell while preventing access of water into the battery cell.</p> |
