A battery module includes a cell assembly including at least one battery cell; a module casing configured to accommodate the cell assembly; and a busbar assembly integrated by forming, by insert-injection molding, a busbar electrically connected to an electrode lead of the cell assembly, and a busbar frame configured to cover the cell assembly at least at one side thereof.

A battery assembly, such as a bipolar battery assembly, generally includes a first casing portion comprising an optically-absorbing region, and a second casing portion comprising an optically-transmissive region. The first and second features form a welded joint. Fabrication of such an assembly can include physically mating the first casing portion with the second casing portion, and irradiating, such as using a laser, the optically-absorbing region defining the first feature through the optically-transmissive region to form the welded joint.

Disclosed are an exterior for a secondary battery and an apparatus and method for manufacturing the exterior for the secondary battery.

According to one aspect of the present invention, a method for manufacturing an exterior for a secondary battery comprises: a first step of preparing a sheet and a mold in which a recess part (I) is formed; a second step of locating the sheet so that a portion of the sheet faces the recess part (I); and a third step of supplying a fluid from the side of the mold toward the recess part (I) to form a forming part having a shape corresponding to that of the recess part (I) in an area of the sheet, which is provided on the recess part (I).

The present disclosure discloses an electric component housing for accommodating electric components. The electric component housing of the present disclosure includes a housing body forming an appearance of the electric component housing; and a metal support structure embedded inside the housing body.

A sealing apparatus for a secondary battery is disclosed, the sealing apparatus configured to seal a battery case of the secondary battery with an electrode assembly therein. The sealing apparatus comprises: a pair of sealing blocks which press the outer circumferential surface of the battery case; and a heating unit which is provided in the pair of sealing blocks and heat the pair of sealing blocks. The pair of sealing blocks comprise: lead sealing regions configured to press the lead sealing portion of the battery case; and case sealing regions configured to press the case sealing portion of the battery case. The heating unit heats the lead sealing regions and the case sealing regions of the pair of sealing blocks at different temperatures.

The present disclosure relates to a battery module that includes a housing having a first protruding shelf along a first perimeter of the housing, a second protruding shelf along a second perimeter of the housing, where the first and second protruding shelves each include an absorptive material configured to absorb a first laser emission. The battery module also includes an electronics compartment cover configured to be coupled to the housing via a first laser weld, and a cell receptacle region cover configured to be coupled to the housing via a second laser weld. The electronics compartment cover has a first transparent material configured to transmit the first laser emission toward the first protruding shelf and the cell receptacle region cover has a second transparent material configured to transmit the first laser emission or a second laser emission toward the second protruding shelf.

An apparatus for manufacturing a secondary battery includes: a recess induction part configured to allow a folding part folded in a battery case of a secondary battery to be recessed inward so as to provide a recess part when the battery case of the secondary battery is folded; a first guide, of which one side of one end is recessed to define a concave space, wherein, when the battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push the folding part to an outside so that the recess induction part is configured to be inserted into the concave space; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

The present invention provides a manufacturing device of a battery case including a first mold including a first space part having a shape corresponding to a storage part formed therein; a second mold including a second space part having a shape corresponding to the storage part and a through-hole communicating with the second space part formed therein, and coupled to the first mold with a laminate sheet interposed therebetween; and an air pressure regulator mounted in the through-hole in a state in which the first space part and the second space part are isolated from the outside, and increasing or decreasing an air pressure of the second space part through the through-hole to stretch and modify the laminate sheet into a shape corresponding to the first space part or the second space part.

A pack case includes: a first wall pressing a battery stack toward a second side in a stacking direction; and a second wall pressing the battery stack toward a first side in the stacking direction. At least one of the first wall and the second wall is a panel structure wall including a first metal plate, a second metal plate located outward of the first metal plate in the stacking direction and faces the first metal plate, and an interposed member interposed between and fixed to the first metal plate and the second metal plate. The interposed member has a lower density than a metal forming the first metal plate and the second metal plate.

A battery comprises beams dividing a cell module receiving volume into a plurality of compartments and a low-density plastic material. The low-density plastic material comprises an upper part over-molded onto the beams. Each compartment is delimited by an inner surface at least partially defined by the upper part of the low-density plastic material.