A fire-extinguishing device for a vehicle battery includes: a gas discharge part installed in a battery pack and configured to discharge gas inside the battery pack; a gas path part configured to permit the flow of gas generated in the battery pack and discharged through the gas discharge part in the event of a fire; a catalytic converter installed in the gas path part and configured to convert carbon monoxide in gas flowing through the gas path part into carbon dioxide; and a fire-extinguishing agent tank configured to store a fire-extinguishing agent and to be connected to the gas path part. The fire-extinguishing agent tank allows the carbon dioxide converted by the catalytic converter to flow thereinto. The fire-extinguishing device for a vehicle battery further includes a fire-extinguishing agent supply path part connecting the fire-extinguishing agent tank to the battery pack.

A fire-extinguishing device for a vehicle battery includes: a gas discharge part installed in a battery pack and configured to discharge gas inside the battery pack; a gas path part configured to permit the flow of gas generated in the battery pack and discharged through the gas discharge part in the event of a fire; a catalytic converter installed in the gas path part and configured to convert carbon monoxide in gas flowing through the gas path part into carbon dioxide; and a fire-extinguishing agent tank configured to store a fire-extinguishing agent and to be connected to the gas path part. The fire-extinguishing agent tank allows the carbon dioxide converted by the catalytic converter to flow thereinto. The fire-extinguishing device for a vehicle battery further includes a fire-extinguishing agent supply path part connecting the fire-extinguishing agent tank to the battery pack.

A battery pack according to an exemplary aspect of the present disclosure includes, among other things, an enclosure that houses at least one battery cell and a vent device comprised of a polymeric material and adapted to discharge battery vent byproducts vented by the battery cell to a location external to the enclosure while preventing ingress of environmental fluids into the enclosure.

A housing is disclosed. The housing contains one or more components, where at least one of the components is an electrical component and where the components do not fill the housing completely and a cavity remains within the housing. One or more filling elements are provided in the cavity which fill more than half of the cavity on contact with water.

A battery pack includes a housing accommodating a battery cell and having a throughhole; and a pressure equalization device coupled to the throughhole and equalizing internal and external pressures of the housing, wherein the pressure equalization device includes a first pressure equalization member configured to equalize the internal and external pressures of the housing when a variation in the internal pressure of the housing is smaller than a reference pressure variation; and a second pressure equalization member configured to equalize the internal and external pressures of the housing when the variation in the internal pressure of the housing is greater than the reference pressure variation.

According to an embodiment, an aircraft comprises a fuselage including composite skin; an enclosure located inside the fuselage; a rechargeable battery disposed inside the enclosure; and a ventilation conduit extending from the enclosure to an opening in the composite skin, the ventilation conduit including: a first portion having a first end coupled to the enclosure and a second end spaced from the composite skin, and a second portion extending between the composite skin and the second end of the first portion, the second portion comprising an electrically non-conductive material.

A venting device for a secondary battery, such as a pouch-shaped secondary battery includes a lower vent portion positionable within a receiving portion of a battery case, an upper vent portion positionable outside of the battery case and communicating with a cavity of the lower vent portion, and a wing portion positionable along a sealed portion of the battery case and encircling an outer perimeter of the upper vent portion. The venting device includes a discharge portion communicating with the upper vent portion, in order to allow gas to pass from the upper vent portion through the discharge portion, and a shaft unit located in the cavity of the lower vent portion, wherein the shaft unit includes an elastic portion.

A venting device for a secondary battery, such as a pouch-shaped secondary battery includes a lower vent portion positionable within a receiving portion of a battery case, an upper vent portion positionable outside of the battery case and communicating with a cavity of the lower vent portion, and a wing portion positionable along a sealed portion of the battery case and encircling an outer perimeter of the upper vent portion. The venting device includes a discharge portion communicating with the upper vent portion, in order to allow gas to pass from the upper vent portion through the discharge portion, and a shaft unit located in the cavity of the lower vent portion, wherein the shaft unit includes an elastic portion.

A secondary battery according to the present invention including a battery case with an accommodation part accommodating an electrode assembly and an electrolyte, a fluid inlet/outlet port provided in the battery case to provide a moving passage through which a fluid is movable so that discharge of an inner gas and reinjection of the electrolyte are enabled, a gas discharge part restricting the discharge of the inner gas passing through the fluid inlet/outlet port, and an electrolyte reinjection part provided to reinject the electrolyte through the fluid inlet/outlet port.

A secondary battery according to the present invention including a battery case with an accommodation part accommodating an electrode assembly and an electrolyte, a fluid inlet/outlet port provided in the battery case to provide a moving passage through which a fluid is movable so that discharge of an inner gas and reinjection of the electrolyte are enabled, a gas discharge part restricting the discharge of the inner gas passing through the fluid inlet/outlet port, and an electrolyte reinjection part provided to reinject the electrolyte through the fluid inlet/outlet port.