Thin-film batteries having a novel encapsulation system.

A battery module includes: a cell stack including a plurality of unit cells arranged in a first direction; and an insulating member around the plurality of unit cells; a plurality of module housings, each of the module housings including a plurality of receiving parts and receiving the cell stack; and a coupling part, and each of the receiving parts includes a fixing wall around the cell stack and having at least a portion which is in contact with the cell stack, and the fixing wall includes end walls at respective sides of each of the receiving parts in the first direction to engage end surfaces of respective sides of the cell stack in the first direction, and the coupling part is configured to be coupled to the coupling part of an adjacent battery module.

A battery pack and a vehicle, wherein the battery pack includes a box assembly, a battery unit, a constraint component and an outer cover, the box assembly includes a box body and a fixed beam, the fixed beam is fixed in the box body; the battery unit is arranged in the box body; the constraint component covers the battery unit and is fixed with the fixed beam; and the outer cover is arranged on one side of the constraint component away from the box body to seal an open end of the box body.

The present disclosure relates to the technical field of energy storage devices, and discloses a battery module, a battery package and a vehicle. The battery module can include a plurality of battery cells arranged in a horizontal direction, the battery cell can include an electrode assembly and a battery case, and the electrode assembly can be accommodated in the battery case. The electrode assembly can include a first electrode sheet, a second electrode sheet, and a separator disposed between the first and second electrode sheets, wherein the dimension of the battery module in the horizontal direction can be larger than that in the vertical direction of the battery module. The electrode assembly can be of a wound structure or of a laminated structure. The present disclosure can effectively reduce the expansion deformation of the battery module.

The present invention relates to an apparatus and method for manufacturing a secondary battery. The apparatus for manufacturing a secondary battery comprises a fixing part configured to press and fix a cell comprising an electrode assembly, an electrolyte, and a battery case configured to accommodate the electrode assembly and the electrolyte, wherein the cell is fixed so that a gas pocket part is disposed above a main body of the battery case, a piercing part configured to pierce the fixed cell through a knife so as to form a gas discharge hole, a vacuum part through which the cell is maintained in a vacuum state, and an internal gas of the cell is discharged to the outside, a leakage prevention part configured to prevent the electrolyte from leaking by pressing the gas pocket part of the cell, in which the internal gas is discharged through the vacuum part, through a leakage prevention block, and a pre-sealing part configured to seal the gas pocket part.

A pouch-type secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; and a pouch film in which the electrode assembly is accommodated, wherein the pouch film includes a first side sealing portion from which a negative electrode lead connected to the electrode assembly protrudes, a second side sealing portion from which a positive electrode lead connected to the electrode assembly protrudes, and an upper sealing portion having both end portions connected to the first and second side sealing portions, and the pouch film includes a folded portion disposed on an end of the first side sealing portion and an end of the second side sealing portion, and folded toward a bottom portion of the pouch film, wherein the folded portion is folded in one direction.

A producing method of a flat-wound electrode body, which is formed by winding a strip-shaped positive electrode plate and a strip-shaped negative electrode plate via a pair of separators into a flat shape, includes winding of forming a cylindrical-wound electrode body by winding the positive electrode plate and the negative electrode plate interposed with the pair of separators into a cylindrical shape, and pressing of forming the flat-wound electrode body by pressing and flattening the cylindrical-wound electrode body. The pressing is to perform pressing to position a positive electrode end portion at a winding end of the positive electrode plate in a flat portion of the flat-wound electrode body.

Proposed are a system and a method for pressurizing an all-solid-state secondary battery at high temperature. More particularly, proposed are a system and a method for pressurizing an all-solid-state secondary battery at high temperature, in which a pre-process of high-temperature pressurization for maximizing a contact interface between a solid electrolyte and an active material and minimizing interfacial resistance is automated in such a manner that the fed secondary battery is automatically packed through a vacuum sealing unit and then pressurized at high temperature, thereby shortening a tact time and thus increasing process efficiency.

Discussed is a battery module, including at least one battery cell, a pair of pressing plates respectively disposed at opposite side surfaces of the at least one battery cell, and a module cover coupled to the pair of pressing plates to cover an upper side or a lower side of the at least one battery cell, wherein opposite ends of the module cover overlap an upper end or a lower end of the pair of pressing plates, and have a plurality of welding portions and a plurality of auxiliary welding beads alternately arranged along a longitudinal direction of the module cover, and wherein the opposite ends of the module cover are welded to the pair of pressing plates at the plurality of welding portions.

A seamless loop-shaped metal member includes: a pair of first side portions extending in the stacking direction; and a pair of second side portions extending in a direction orthogonal to the stacking direction to connect the pair of first side portions to each other. Each of the plurality of power storage cells has a main surface having a rectangular shape constituted of a pair of long sides and a pair of short sides when viewed in the stacking direction. Each of the pair of second side portions is located in parallel with the pair of long sides when viewed in the stacking direction. At least one of the pair of second side portions is provided with a hole portion extending through the at least one of the pair of second side portions in the stacking direction.