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

An energy storage device includes a container that accommodates an electrode assembly, and the container includes, on a surface of the container as viewed from a thickness direction of the container, a first recessed portion in a portion of a corner portion of the surface or in a portion of a side portion of the surface. The first recessed portion penetrates in the thickness direction, and a gas release valve is disposed in the first recessed portion.

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

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

In an embodiment a capacitor component includes a first winding element and a heat sink, wherein the first winding element is in direct thermal contact with the heat sink.

In an embodiment a capacitor component includes a first winding element and a heat sink, wherein the first winding element is in direct thermal contact with the heat sink.

A power storage device of the present disclosure includes: a power storage element; a case that houses the power storage element, the case having a bottomed tubular shape and including an opening at one end of the case; and a sealing body that seals the opening. The case includes a first pressing part and a second pressing part in a vicinity of the opening. The first pressing part presses a side surface of the sealing body and protrudes to an inside of the case, and the second pressing part presses an upper surface of the sealing body. The sealing body includes a slit on the upper surface of the sealing body. The slit extends radially inward of the case with respect to the second pressing part and opens at the side surface of the sealing body.

A power storage device of the present disclosure includes: a power storage element; a case that houses the power storage element, the case having a bottomed tubular shape and including an opening at one end of the case; and a sealing body that seals the opening. The case includes a first pressing part and a second pressing part in a vicinity of the opening. The first pressing part presses a side surface of the sealing body and protrudes to an inside of the case, and the second pressing part presses an upper surface of the sealing body. The sealing body includes a slit on the upper surface of the sealing body. The slit extends radially inward of the case with respect to the second pressing part and opens at the side surface of the sealing body.

A power storage device includes a power storage element, a bottomed cylindrical case having an opening portion, and a sealing unit sealing the opening portion. The sealing unit includes a sealing body having a first upper surface and a first lower surface, and a reinforcing member with an elastic modulus higher than that of the sealing body, having a second upper surface and a second lower surface facing the first upper surface. The case includes a first pressing portion pressing against the first side surface of the sealing body and protruding inward of the case, and a second pressing portion pressing against the second upper surface of the reinforcing member. The sealing unit has a first passage communicating with the outside of the power storage device further radially inward of the case than the second pressing portion and opening on the side surface of the sealing unit.

A power storage device includes a power storage element, a bottomed cylindrical case having an opening portion, and a sealing unit sealing the opening portion. The sealing unit includes a sealing body having a first upper surface and a first lower surface, and a reinforcing member with an elastic modulus higher than that of the sealing body, having a second upper surface and a second lower surface facing the first upper surface. The case includes a first pressing portion pressing against the first side surface of the sealing body and protruding inward of the case, and a second pressing portion pressing against the second upper surface of the reinforcing member. The sealing unit has a first passage communicating with the outside of the power storage device further radially inward of the case than the second pressing portion and opening on the side surface of the sealing unit.