A safety structure for a vehicle battery pack includes: a battery module each including a plurality of battery cells stacked between opposite endplates; a lower casing which covers a lower side of the battery modules that are two-dimensionally arrayed; an upper cover coupled to an upper side of the lower casing and covering an upper side of the battery modules; and first cut-off pads, each of which is made of a heat-resistant and insulating material, disposed in a portion where a gap between the endplate of the battery module and the lower casing becomes locally narrow.

This application relates a battery pack and an electric vehicle. The battery pack includes a housing provided with a bottom surface and a top surface. A battery assembly is arranged in the housing. The battery assembly includes a structural reinforcing member and a cell sequence formed by connecting multiple cells. An outer surface of the cell includes a bottom surface, a top surface, first lateral surfaces, and two opposing second lateral surface. The bottom surface of the cell faces the bottom surface of the housing, and the top surface of the cell faces the top surface of the housing. The first lateral surface has a largest area. The multiple cells are arranged with second lateral surfaces thereof facing each other to form the cell sequence, and the structural reinforcing member is fixedly bonded with a first lateral surface of each cell in the cell sequence. The battery assembly abuts with the bottom surface of the housing to be supported in the housing.

There are provided a thermally expandable fire-resistant material for battery pack and a fire-resistant sheet for battery pack, which have high flame retardancy and thermal insulation properties to thermal runaway and ignition of on-vehicle batteries. The thermally expandable fire-resistant material for battery pack is one to be used for a battery pack to be mounted on vehicles, and contains a resin and a thermally expandable compound, and has an expansion ratio in a case where heated at 600° C. of 2.5 times or more.

The battery pack has a laminated body in which unit cells are laminated one on another, a cell case having a first opening and containing the laminated body, and a first lid member to tightly close the first opening. The first opening is positioned to face, in connection with a unit cell laminated direction, a first face of the laminated body. The first lid member is configured to, if an internal pressure of the cell case is lower than atmospheric pressure, deform while keeping the tightly closing state, come into contact with the first face of the laminated body, and apply a pressure based on a differential pressure between atmospheric pressure and the internal pressure of the cell case to the contacting face.

A traction battery pack assembly includes, among other things, first and second pieces of an enclosure having an interior area. An attachment rim is disposed at a periphery of the first piece. The attachment rim has a stand-off that includes a platform portion and turned flange. The platform portion extends outward from the interior area in a first direction. The platform portion provides an aperture. The turned flange extends away from the platform portion in a second direction and terminates at an end face. The second direction is transverse to the first direction. The aperture is configured to receive a fastener that clamps the end face against the second piece.

The invention relates to a cover structure the SMC main body of which is simultaneously pressed and bonded with two additional layers in a bonding press.

A battery enclosure includes a tub defining an internal volume, a lid, a cross member within the internal volume, and a mounting bracket. The tub has a bottom and a wall integrally formed with the bottom. The lid is configured to couple to the wall to enclose the internal volume. The cross member is coupled to the tub. The mounting bracket is attached to the bottom of the tub and is configured to releasbly secure a battery.

Battery packs according to some embodiments of the present technology may include a first end beam and a second end beam. The battery packs may include a first side beam and a second side beam each extending between the first end beam and the second end beam. The battery packs may include a base. The first end beam, the second end beam, the first side beam, the second side beam, and the base may be welded along each interface between each component. The battery packs may include a plurality of battery cells disposed between the first side beam and the second side beam. Each battery cell of the plurality of battery cells may be separated from an adjacent battery cell by an interface material. The battery packs may include a lid coupled with a surface of each battery cell of the plurality of battery cells facing the lid.

A method of transporting at least one energy storage device comprising the step of housing at least one energy storage device in a cassette comprising: a hollow casing for receiving at least one energy storage device; a top cap assembly received at one end of the hollow casing and an end cap assembly received at another end of the hollow casing; electronic circuitry housed within the end cap assembly, the electronic circuitry comprising at least one receptacle associated with each of the at least one energy storage devices, the at least one receptacle being reversibly mateable with at least one plug associated with an external device such that the cassette is received by the external in a first orientation and a second orientation; and electrically isolating the at least one energy storage devices from each other by individually coupling the at least one energy storage device to the electronic circuitry.

A power storage module includes: a plurality of power storage cells stacked along a first direction; an end plate provided at an end of a stack of the plurality of power storage cells; and a restraint member that restrains the end plate and the plurality of power storage cells in the first direction. The restraint member includes a thin portion, a thick portion, and a stepped surface between the thin portion and the thick portion, the thin portion and the thick portion being formed in one piece. The stepped surface is in abutment with the end plate in the first direction.