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.

A battery box component is detailed which is obtained by providing a fiber-reinforced plastic with a refractory layer, the fiber-reinforced plastic is a thermosetting resin as a matrix resin, containing reinforcing fibers, wherein: the reinforcing fibers are discontinuous reinforcing fibers having a weight average fiber length of from 1 mm to 100 mm; the thermosetting resin is composed of at least one resin of an unsaturated polyester resin, a vinyl ester resin, or an epoxy resin; the thickness X of the fiber-reinforced plastic is not less than 1.0 mm but less than 5 mm; and the refractory layer contains an acrylic resin or a urethane resin and a foaming composition. A method for producing a battery box component is also provided.

A battery box component is detailed which is obtained by providing a fiber-reinforced plastic with a refractory layer, the fiber-reinforced plastic is a thermosetting resin as a matrix resin, containing reinforcing fibers, wherein: the reinforcing fibers are discontinuous reinforcing fibers having a weight average fiber length of from 1 mm to 100 mm; the thermosetting resin is composed of at least one resin of an unsaturated polyester resin, a vinyl ester resin, or an epoxy resin; the thickness X of the fiber-reinforced plastic is not less than 1.0 mm but less than 5 mm; and the refractory layer contains an acrylic resin or a urethane resin and a foaming composition. A method for producing a battery box component is also provided.

A battery module according to an embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked, and a module frame for housing the battery cell stack, wherein the battery cell comprises a pouch case and an electrode assembly housed in the pouch case, and wherein a foam pad layer for controlling cell swelling is located at the outermost part of the pouch case.

The present disclosure relates to a multilayer composite that may include a first porous layer, and a first barrier layer overlying the first porous layer. The first barrier layer may include a polyaramid material, a polyimide material, or any combination thereof. The multilayer composite may have a flame resistance rating of at least about 180° C. and a 50% strain compression rating of not greater than about 600 kPa.

The present disclosure relates to a multilayer composite that may include a first porous layer, and a first barrier layer overlying the first porous layer. The first barrier layer may include a polyaramid material, a polyimide material, or any combination thereof. The multilayer composite may have a flame resistance rating of at least about 180° C. and a 50% strain compression rating of not greater than about 600 kPa.

A cell holder for a battery module comprising a plurality of battery cells, said cell holder comprising a body, said body having: a top surface; a bottom surface; a plurality of side surfaces connecting the bottom surface and the top surface; and a plurality of through holes extending between the top surface and the bottom surface, wherein each through hole is arranged to receive at least one battery cell.

A cell holder for a battery module comprising a plurality of battery cells, said cell holder comprising a body, said body having: a top surface; a bottom surface; a plurality of side surfaces connecting the bottom surface and the top surface; and a plurality of through holes extending between the top surface and the bottom surface, wherein each through hole is arranged to receive at least one battery cell.

The present disclosure relates to an electricity storage module and battery. It further relates to a corresponding manufacturing process for such a storage module and battery. The module comprises a plurality of electricity storage pouch cells each having a pouch and first and second electrodes protruding from the pouch, the pouch cells being juxtaposed along a principal direction and forming a stack embedded in a resin.

An electrochemical cell module includes a housing including a main surface plate having a first surface with a first recess and a side plate in contact with the main surface plate, an electrochemical cell located in the housing, being plate-like, and having a main surface, a pressure plate located in the housing, facing the first surface, and being in contact with the main surface, and a spring received in the first recess to urge the pressure plate and the main surface plate.