Abstract:
An energy storage element includes: a container; an electrode assembly housed in the container; an electrode terminal; a current collector which electrically connects the electrode terminal and the electrode assembly; and an external insulation sealing member for insulating the container and the electrode terminal. The container includes a protrusion part having a through-hole for allowing penetration of the electrode terminal and protruding from the upper surface of the container. The electrode terminal is electrically connected to the current collector in a state where the electrode terminal penetrates through the protrusion part. The external insulation sealing member has a side part disposed along the side surface of the protrusion part, and the end surface of the end part of the side part at the side of the upper surface is apart from the upper surface.
Abstract:
An energy storage device, including: an outer package having a first hole formed therein; a terminal passing through the outer package though the first hole; a sealing member in contact with an inner peripheral face of the first hole; a circuit board provided inside the outer package; and a heat conductive portion provided inside the outer package to connect the circuit board and the terminal.
Abstract:
A non-aqueous electrolyte secondary battery includes: a container; an electrode assembly; an electrode terminal; a current collector; and an internal insulation sealing member insulating the container and the current collector. The container includes a wall having an outer surface with a protrusion part protruding outward from the outer surface and an inner surface with a recess part formed correspondingly in position to the protrusion part. The recess part has an outermost bottom surface and an inner side surface formed continuously between the bottom surface and the inner surface of the wall of the container. At least part of the inner side surface of the recess part is tilted to the protrusion direction of the protrusion part. The internal insulation sealing member is between the current collector and the recess part of the container, and has side wall parts parallel to the at least part of the inner side surface.
Abstract:
A positive electrode current collector includes a terminal connecting portion, a first electrode connecting portion including a first surface extending forward and downward from a right frontal portion, a second electrode connecting portion including a second surface extending forward and downward from a left frontal portion and opposing the first surface, a first twisted portion having an end portion connected to the right frontal portion and the other end portion connected to an upper end portion, and a second twisted portion having an end portion connected to the left frontal portion and the other end portion connected to an upper end portion. A distance between the first surface and the second surface is larger than a distance between the center of the right frontal portion and the center of the left frontal portion.
Abstract:
An energy storage element includes a container that includes a container body including an opening and a cap part formed on the opening, an electrode assembly housed in the container, an electrode terminal, and a current collector which electrically connects the electrode terminal and the electrode assembly. The cap part of the container includes an outer surface including a protrusion part formed to protrude outward from the outer surface, and an inner surface including a recess part formed at a position corresponding to a position of the protrusion part.
Abstract:
An electric storage device includes an electrode assembly and an outer case. The electrode assembly has at least one convex portion. The outer case accommodates the electrode assembly and has an inner wall with a recess in portion thereof opposite the at least one convex portion of the electrode assembly.