An apparatus includes a battery stack including a plurality of alternating anodes and cathodes, wherein each of the anodes is positioned between first and second separators, and wherein a tab of the anode extends out from between the first and second separators, and an edge tape extending across a top of the first and second separators.

An apparatus and a method of detecting liquid leakage within a battery pack using a gyro sensor and a moisture detecting sensor. When liquid leakage of a coolant is detected, such as when a pipe of a coolant supplied for cooling (radiating heat) within a battery pack is damaged, the apparatus recognizes a liquid leakage generation position according to a slope of the battery pack by using a gyro sensor and determines whether the liquid leakage is generated based on a difference in a temperature between an upper side and a lower side of a corresponding region by using moisture detecting sensors, thereby improving accuracy of the detection of the liquid leakage according to the slope and the position of the battery pack. Particularly, the moisture detecting sensor is operated to be on only when the detection of the liquid leakage is required, thereby preventing unnecessary energy consumption.

A cell includes an electrode assembly, a pin assembly, and a cell house. The electrode assembly includes a central hole, at least one positive electrode, at least one negative electrode, and at least one diaphragm separating the at least one positive electrode from the at least one negative electrode. The at least one positive electrode, the at least one negative electrode and the at least one diaphragm are disposed around the central hole in a spiral winding manner. The pin assembly is disposed in the central hole for polarity separation. The pin assembly includes a housing including an axial through hole; the housing is partially or fully disposed in the central hole. The pin assembly further includes an insulating part for separating the polarity of the cell and at least one electrode lead. The cell house is hermetically connected to the housing.

An exemplary embodiment in the present disclosure relates to an electrode assembly capable of suppressing the occurrence of a short of a battery including an insulation film, a secondary battery including the electrode assembly, a battery module, and a battery pack. The electrode assembly includes an electrode laminate in which a cathode and an anode are alternately stacked with a separator as a boundary, a porous insulation film surrounding four or more sides of the electrode laminate, in which two of both ends of the insulation film are adhered on a side surface of the electrode laminate.

A battery module includes a cell stack including a plurality of battery cells stacked in a direction, a module housing having an internal space in which the cell stack is received and an air inlet and an air outlet through which air enters and exits, a valve installation hole formed through a side wall of the module housing, a feed valve nozzle installed at the valve installation hole facing the internal space of the module housing, and a water expandable member provided in the module housing. The water expandable member expands in volume when it absorbs water during operation of the feed valve nozzle to close at least one of the air inlet, the air outlet or the valve installation hole.

The power storage device includes power storage units arranged with a conductive plate interposed therebetween in the vertical direction, each of the power storage units includes an electrode stack including bipolar electrodes stacked with a separator interposed therebetween, and a sealing member provided around the electrode stack so as to seal a housing space formed between adjacent electrodes of the electrode stack. At least one of the power storage units is provided with an overhang member on an outer peripheral surface of the sealing member. The overhang member includes an inclined portion that extends from the outer peripheral surface of the sealing member toward the outside of the power storage unit and inclines downward as it leaves away from the outer peripheral surface of the sealing member, and a top portion formed at a lower end of the inclined portion.

Provided is an ampoule-type reserve battery including: an ampoule casing having an accommodation part formed therein; an electrolyte accommodated in a lower portion of the accommodation part; a leakage prevention liquid made of oil, which is phase-separated from the electrolyte without being mixed therewith so as to prevent the electrolyte from leaking through an upper portion of the accommodation part, and accommodated in the upper portion of the accommodation part; and a separation membrane mounted in the accommodation part and configured to separate the electrolyte from the leakage prevention liquid.

Provided is a catalyst part for a lead-acid battery, the catalyst part being capable of reducing gas release from an electrolyte solution and a decrease in electrolyte solution due to the leakage, thus providing a lead-acid battery having a long life. Also provided are a ventilation filter, a ventilation plug, and a lead-acid battery each including the catalyst part. A catalyst part for a lead-acid battery, including a catalyst layer including a catalyst to accelerate a reaction for generating water or water vapor from oxygen and hydrogen, and an arrangement through which at least part of the water or water vapor is condensed and/or flowed back to the inside of the battery.

A battery cover includes a sealing member configured to provide a fluid-tight sealing member with a battery casing. The sealing member has a top surface and a bottom surface. A vent aperture is formed through the sealing member. A condensation chamber is disposed adjacent the bottom surface of the sealing member and is fluidly coupled to the vent aperture via an outlet. The condensation chamber receiving a flow of a fluid therethrough.

An apparatus includes a battery stack including a plurality of alternating anodes and cathodes, wherein each of the anodes is positioned between first and second separators, and wherein a tab of the anode extends out from between the first and second separators, and an edge tape extending across a top of the first and second separators.