A battery module includes a housing that defines an inner volume and includes an airflow path from an aperture formed in a first end member of the housing, through the inner volume, to an aperture formed in a second end member of the housing; power cells mounted in the inner volume of the housing, where each of the power cells includes a vent member; and a barrier that at least partially interrupts a fluid pathway that extends between the vent members and at least one of the aperture formed in the first end member or the aperture formed in the second end member of the housing. The power cells are directionally mounted in the volume such that the vent members face an offset direction relative to at least one of the aperture formed in the first end member or the aperture formed in the second end member of the housing.

A battery module includes a housing that defines an inner volume and includes an airflow path from an aperture formed in a first end member of the housing, through the inner volume, to an aperture formed in a second end member of the housing; power cells mounted in the inner volume of the housing, where each of the power cells includes a vent member; and a barrier that at least partially interrupts a fluid pathway that extends between the vent members and at least one of the aperture formed in the first end member or the aperture formed in the second end member of the housing. The power cells are directionally mounted in the volume such that the vent members face an offset direction relative to at least one of the aperture formed in the first end member or the aperture formed in the second end member of the housing.

A battery system includes: a battery housing; a plurality of battery cells arranged in a plurality of battery cell groups within the battery housing; and a separation sheet. Each battery cell group has a venting side with a venting exit configured to vent a venting stream from the battery cells to exit the battery cell group, and the separation sheet is at venting sides of the battery cell groups. The separation sheet forms separate venting chambers for each of the battery cell groups and is configured to guide the venting stream leaving the venting exits away from the battery cell groups through openings in the separation sheet.

A battery includes a cylindrical battery cell having a cylindrical side surface provided with a pressure relief mechanism, an electrical chamber configured to accommodate the battery cell, a collection chamber configured to collect emissions from the battery cell when the pressure relief mechanism is actuated, and an isolation component configured to isolate the electrical chamber from the collection chamber. The isolation component includes a first region and a second region. The first region is used for accommodating a first portion of the battery cell such that the first portion protrudes, towards the collection chamber, from a surface of the second region facing towards the collection chamber, and the pressure relief mechanism is disposed in a region of the cylindrical side surface located in the first portion such that the emissions are allowed to enter the collection chamber when the pressure relief mechanism is actuated.

A battery includes a cylindrical battery cell having a cylindrical side surface provided with a pressure relief mechanism, an electrical chamber configured to accommodate the battery cell, a collection chamber configured to collect emissions from the battery cell when the pressure relief mechanism is actuated, and an isolation component configured to isolate the electrical chamber from the collection chamber. The isolation component includes a first region and a second region. The first region is used for accommodating a first portion of the battery cell such that the first portion protrudes, towards the collection chamber, from a surface of the second region facing towards the collection chamber, and the pressure relief mechanism is disposed in a region of the cylindrical side surface located in the first portion such that the emissions are allowed to enter the collection chamber when the pressure relief mechanism is actuated.

A power storage device includes a stack in which a plurality of battery cells is stacked together, a housing that houses the stack, and an insulating sheet disposed between a ceiling surface of the housing and the stack. The ceiling surface includes an exposed area that is not covered with the insulating sheet. The insulating sheet includes a projecting portion projecting downward. The projecting portion is disposed between the stack and the exposed area in plan view.

An aerosol generating device including: a housing having a mouth end and an opposing end, the opposing end having a vent hole; a battery within the housing, the battery having a vent point in an outer surface of the battery, the vent point arranged such that fluid is released preferentially from the vent point during degassing of the battery; and a fluid directing arrangement within the housing. The fluid directing arrangement is configured to define a fluid flow path from the vent point of the battery to the vent hole of the housing.

An aerosol generating device including: a housing having a mouth end and an opposing end, the opposing end having a vent hole; a battery within the housing, the battery having a vent point in an outer surface of the battery, the vent point arranged such that fluid is released preferentially from the vent point during degassing of the battery; and a fluid directing arrangement within the housing. The fluid directing arrangement is configured to define a fluid flow path from the vent point of the battery to the vent hole of the housing.

A rechargeable battery is introduced, and an exemplary embodiment of the present invention provides a rechargeable battery including: an electrode assembly configured to charge and discharge a current; a case accommodating the electrode assembly therein; a cap plate configured to seal an opening of the case; an electrode terminal electrically connected to the electrode assembly and externally drawn out through the cap plate; a first valve assembly installed in an electrolyte injection opening of the cap plate to open and close the electrolyte injection opening; a gas removal opening formed in the cap plate to remove a gas; and a second valve assembly installed in the gas removal opening to open and close the gas removal opening.

The present invention relates to a secondary battery enabling the enhancement of safety by rapidly releasing gas generated therein. One embodiment discloses a secondary battery comprising: an electrode assembly; a case for receiving the electrode assembly; and a cap assembly coupled to the upper portion of the case and provided with a cap-up, a safety vent installed on the lower portion of the cap-up and having a notch formed therein, and a cap-down coupled to the lower portion of the safety vent, wherein the cap-down comprises a welded part welded to the safety vent from the lower portion of the cap-down.