A battery pack includes: battery cells each including first and second end portions that are opposite each other in a length direction; a case providing an accommodation space in which each battery cell and a cooling fluid for cooling the battery cell are located, the case including a first cover covering the first end portion of the battery cell, the first cover including a first terminal hole through which the first end portion of the battery cell is partially exposed; and first and second sealing members doubly surrounding the first terminal hole from an outside of the first terminal hole to block a cooling fluid leakage passage formed through the first terminal hole. Therefore, while improving heat-dissipating performance, a cooling fluid sealing structure may be provided to the battery pack to prevent cooling fluid leakage from the accommodation space in which the battery cells are accommodated.

A battery housing for receiving at least one battery cell module is disclosed. The battery housing includes at least one housing part surrounding a housing interior. A film composed of a metal is arranged, at least in portions, on an outside of the at least one housing part facing away from the housing interior. A studded structure is provided on a surface of the film facing away from the at least one housing part. The studded structure includes a plurality of studs arranged spaced apart from one another and projecting from the surface of the film. The plurality of studs support themselves on the outside of the at least one housing part.

A battery housing for receiving at least one battery cell module is disclosed. The battery housing includes at least one housing part surrounding a housing interior. A film composed of a metal is arranged, at least in portions, on an outside of the at least one housing part facing away from the housing interior. A studded structure is provided on a surface of the film facing away from the at least one housing part. The studded structure includes a plurality of studs arranged spaced apart from one another and projecting from the surface of the film. The plurality of studs support themselves on the outside of the at least one housing part.

A method for formation of cylindrical and prismatic can cells may include providing a battery, where the battery includes one or more cells, with each cell including at least one silicon-dominant anode, a cathode, and a separator. The battery also includes a metal can that contains the one or more cells such that during formation a pressure between 50 kPa and 1 MPa is applied to the one or more cells. The battery may include strain absorbing materials arranged between the one or more cells and interior walls of the can. The strain absorbing materials may include foam. The strain absorbing materials may include a solid electrolyte layer. The strain absorbing materials may include PMMA, PVDF, or a combination thereof. The pressure during a formation process may be due to a thickness of the strain absorbing materials being thicker than an expansion of the one or more cells.

A method for formation of cylindrical and prismatic can cells may include providing a battery, where the battery includes one or more cells, with each cell including at least one silicon-dominant anode, a cathode, and a separator. The battery also includes a metal can that contains the one or more cells such that during formation a pressure between 50 kPa and 1 MPa is applied to the one or more cells. The battery may include strain absorbing materials arranged between the one or more cells and interior walls of the can. The strain absorbing materials may include foam. The strain absorbing materials may include a solid electrolyte layer. The strain absorbing materials may include PMMA, PVDF, or a combination thereof. The pressure during a formation process may be due to a thickness of the strain absorbing materials being thicker than an expansion of the one or more cells.

A battery enclosure for a vehicle chassis having a base member with raised surface features on the upper surface outlining individual cells, each cell configured to receive at least one battery; a cover member having a plurality of depending surface features on the lower surface which are aligned with the surface features of the base member. The cover member includes a channel formed in the upper surface thereof, aligned with and extending along a length of the depending surface feature disposed on the bottom surface. A lattice support structure is also included which has a plurality of support members extending axially and transversely, wherein the lattice support structure is configured to be at least partially disposed within the channel of the cover member and mounted to the vehicle chassis. The lattice support member providing increased rigidity and a load distribution path for externally applied forces (e.g. crash events) to prevent or inhibit enclosure breakage or puncture.

A battery enclosure for a vehicle chassis having a base member with raised surface features on the upper surface outlining individual cells, each cell configured to receive at least one battery; a cover member having a plurality of depending surface features on the lower surface which are aligned with the surface features of the base member. The cover member includes a channel formed in the upper surface thereof, aligned with and extending along a length of the depending surface feature disposed on the bottom surface. A lattice support structure is also included which has a plurality of support members extending axially and transversely, wherein the lattice support structure is configured to be at least partially disposed within the channel of the cover member and mounted to the vehicle chassis. The lattice support member providing increased rigidity and a load distribution path for externally applied forces (e.g. crash events) to prevent or inhibit enclosure breakage or puncture.

The present invention relates to a battery pack to which a thin-film label can be easily attached, and a label attaching method thereof. Disclosed in one embodiment is a battery pack comprising: a battery cell having an electrode assembly accommodated in a case; and an external film, which has a label attached to at least one surface of the case and directly attached to the case, a step difference compensation tape attached to the upper surface of the label and positioned on one side of the label, and a protective film attached to the upper surface of the label and extending to the upper part of the step difference compensation tape, wherein the protective film is attached so as to be detachable from the label.

The present invention relates to a battery housing for a vehicle battery, comprising at least two wall elements, stacked one above the other in a stacking direction, in order to form in each case a housing wall, wherein each wall element comprises a pair of a through bore and a threaded bore, arranged next to the through bore in a plane perpendicular to the stacking direction, for screwing on a wall element which is directly adjacent in the stacking direction, wherein the threaded bores and through bores are arranged alternately one above the other with reference to the stacking direction; it moreover relates to a vehicle battery with such a battery housing.

Battery packs are presented having structural members for improving thermal management of battery cells therein. In some embodiments, the battery packs include a first end-member positioned opposite a second end-member and parallel thereto. The battery packs also include a first side beam positioned opposite a second side beam and parallel thereto. The first side beam and the second side beam extend longitudinally between the first end-member and the second end-member. A longitudinal member is disposed between the first side beam and the second side beam and defines a plurality of longitudinal rows. The battery packs may additionally include a lateral member disposed between first end-member and the second end-member to partition the plurality of longitudinal rows into an array of battery cell compartments. A battery cell is disposed within at least one battery cell compartment.