The present disclosure provides a core package, an aluminum electrolytic capacitor and a packaging method thereof. The core package includes a plurality of first electrode foils and second electrode foils laminated one on another, each of the first electrode foils is an anode foil or a cathode foil, and the second electrode foil is the other. Among the plurality of first electrode foils, a first conductive foil is arranged at the edge of each of the first electrode foils, a first portion of the first conductive foil is electrically coupled to the corresponding first electrode foil, and a second portion of the first conductive foil extends and protrudes relative to the corresponding first electrode foil; and the plurality of first conductive foils are connected to a first conductive foil strip through the second portion; and an oxide film is formed on a surface of the first conductive foil.

A current interruption device includes a first conductive member, a second conductive member, a first deformable member, a second deformable member, and a first seal member. The second conductive member is disposed at a position opposed to the first conductive member. A center portion of the first deformable member is fixed to the second conductive member. The second deformable member is disposed on a side opposite to the first deformable member relative to the second conductive member. The first seal member is disposed between the first conductive member and the second conductive member. A second seal member is disposed between the first conductive member and the casing. A gas permeability between the casing and the first conductive member is equal to or less than a gas permeability between the first conductive member and the second conductive member.

A battery pack includes a plurality of unit cells, each including a cylindrical battery case, and a connecting member (12) that connects the unit cells to each other. The battery case of each unit cell includes a bottom surface portion (30b) including a plurality of gas discharging sections (32) that open when an internal pressure of the unit cell reaches a predetermined pressure. The gas discharging sections (32) are separated from each other. The connecting member (12) is joined to a non-opening section (34) of the bottom surface portion (30b), the non-opening section (34) being disposed between the gas discharging sections (32).

Disclosed is an energy storage apparatus which includes: an energy storage device; an outer case which accommodates the energy storage device; a partition plate which is disposed between the energy storage device and a side wall of the outer case; and a discharge portion which is disposed on the outer case, the discharge portion having one or more openings through which a gas, which has passed through a flow passage formed between the partition plate and the side wall, is discharged from the outer case.

Disclosed is an energy storage apparatus which includes: an energy storage device; an outer case which accommodates the energy storage device; a partition plate which is disposed between the energy storage device and a side wall of the outer case; and a discharge portion which is disposed on the outer case, the discharge portion having one or more openings through which a gas, which has passed through a flow passage formed between the partition plate and the side wall, is discharged from the outer case.

A disclosed power storage device includes a power storage element, a case with a bottomed cylindrical shape having an opening at one end and housing the power storage element, and a sealing member for sealing the opening. The case has, in a vicinity of the opening, a first pressing portion pressing a side surface of the sealing member and protruding inward of the case, and a gas vent portion disposed nearer to the one end of the case than an apex which is the most protruded point of the first pressing portion. This can provide a power storage device including an explosion-proof mechanism that has high operational reliability and does not impair airtightness.

A disclosed power storage device includes a power storage element, a case with a bottomed cylindrical shape having an opening at one end and housing the power storage element, and a sealing member for sealing the opening. The case has, in a vicinity of the opening, a first pressing portion pressing a side surface of the sealing member and protruding inward of the case, and a gas vent portion disposed nearer to the one end of the case than an apex which is the most protruded point of the first pressing portion. This can provide a power storage device including an explosion-proof mechanism that has high operational reliability and does not impair airtightness.

According to the invention there is provided a fluidic port (8-9) for a refillable structural composite electrical energy storage device (1), and a method of producing same. The device may be a battery or supercapacitor with first and second electrodes (2,3) which are separated by a separator structure (6), wherein the device contains an electrolyte (4) which may further contain active electrochemical reagents. The fluidic port allows the addition, removal of electrolyte fluids, and venting of any outgassing by products.

According to the invention there is provided a fluidic port (8-9) for a refillable structural composite electrical energy storage device (1), and a method of producing same. The device may be a battery or supercapacitor with first and second electrodes (2,3) which are separated by a separator structure (6), wherein the device contains an electrolyte (4) which may further contain active electrochemical reagents. The fluidic port allows the addition, removal of electrolyte fluids, and venting of any outgassing by products.

An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections.