An apparatus for detecting swelling of a battery module, which includes a swelling detection panel having an edge in contact with an inner surface of a battery module housing; a slant portion configured to protrude from the inner surface of the battery module housing and having a slant surface extending from a first location adjacent to the edge of the swelling detection panel to a second location while forming a predetermined angle with the inner surface; a contact sensor unit installed to the inner surface of the battery module housing immediately adjacent to an end of the slant surface corresponding to the second location; and a control unit configured to receive a swelling detection signal from the contact sensor unit when the edge of the swelling detection panel contacts the contact sensor unit, and to control an alarm unit to output an alarm message.

A battery module includes a plurality of battery cell assemblies, each battery cell assembly including at least one battery cell, and a module frame extending in a longitudinal direction of the plurality of battery cell assemblies, the module frame accommodating therein the plurality of battery cell assemblies in a row in the longitudinal direction.

A battery module includes a plurality of battery cell assemblies, each battery cell assembly including at least one battery cell, and a module frame extending in a longitudinal direction of the plurality of battery cell assemblies, the module frame accommodating therein the plurality of battery cell assemblies in a row in the longitudinal direction.

An electrochemical cell includes a cell stack including a plurality of unit cells stacked on one another and each being a plate and including an electricity generator and a casing accommodating the electricity generator, and an outer case accommodating the cell stack. The outer case includes at least one rib in a surface area between an outer edge of the outer case and an outer periphery of the cell stack as viewed in a stacking direction of the cell stack. The at least one rib is a portion of the surface area protruding outward.

An electrochemical cell includes a cell stack including a plurality of unit cells stacked on one another and each being a plate and including an electricity generator and a casing accommodating the electricity generator, and an outer case accommodating the cell stack. The outer case includes at least one rib in a surface area between an outer edge of the outer case and an outer periphery of the cell stack as viewed in a stacking direction of the cell stack. The at least one rib is a portion of the surface area protruding outward.

An electrochemical device includes a packaging shell having a first packaging body provided with a first dent and a first flange connected to a sidewall of the first dent, and a second packaging body provided with a second dent and a second flange connected to a sidewall of the second dent; a first electrode assembly disposed in the first dent; a second electrode assembly disposed in the second dent; and a partition plate including a partition layer and a first bonding layer located on a first surface of the partition layer. The partition plate is located between the first packaging body and the second packaging body. The flange overlaps the partition plate and extends beyond an edge of the partition plate. The partition plate fits with the first packaging body and the second packaging body to form mutually independent cavities on two sides of the partition plate.

A battery module according to the embodiment of the present disclosure includes a battery cell stack including a plurality of battery cells stacked in a first direction, a housing for the battery cell stack, a first thermally conductive resin layer located between the battery cell stack and a lower portion of the housing, and a second thermally conductive resin layer located between the battery cell stack and an upper portion of the housing, wherein at least one first injection hole for injecting a thermally conductive resin is formed in the upper portion of the housing.

A battery module according to the embodiment of the present disclosure includes a battery cell stack including a plurality of battery cells stacked in a first direction, a housing for the battery cell stack, a first thermally conductive resin layer located between the battery cell stack and a lower portion of the housing, and a second thermally conductive resin layer located between the battery cell stack and an upper portion of the housing, wherein at least one first injection hole for injecting a thermally conductive resin is formed in the upper portion of the housing.

Provided is a pouch type secondary battery including a jelly roll in which a plurality of unit cells including a structure of a separator interposed between a positive electrode and a negative electrode are laminated, wherein a unit cell positioned in an outermost layer of the jelly roll includes a carbon dioxide adsorbent.

An apparatus mounts a battery cell stack to a frame that includes a base cover and a pair of side covers respectively extending from both ends of the base cover. The apparatus includes a support member to support the battery cell stack, and two films, wherein one side of each of the two films is respectively attachable to one of the pair of side covers of the frame, and another side of each of the two films is respectively attachable to one of two side surfaces of the battery cell stack, wherein, when the support member and the frame move toward each other, the two films are movable into the frame, and the battery cell stack is movable along the two films to be mounted to the frame.