A battery cell comprises a battery cell enclosure made of a non-metallic material. First battery terminals arranged in the battery cell enclosure. Second battery terminals arranged in the battery cell enclosure. Electrolyte is located between the first battery terminals and the second battery terminals. C conductive portions are arranged adjacent to an outer surface of the battery cell enclosure, where C is an integer greater than zero.

According to an embodiment of the present disclosure, there are provided a pouch-type secondary battery, including an electrode assembly, and a pouch film including an accommodating part in which the electrode assembly is disposed and a sealing part formed by fusion of edges of the accommodating part, wherein the sealing part includes a pattern sealing part on one or more sides among four sides of the pouch-type secondary battery, and the pattern sealing part includes a plurality of sealings provided with one or more discontinuous parts, and a battery module including the pouch-type secondary battery as a unit cell.

According to an embodiment of the present disclosure, there are provided a pouch-type secondary battery, including an electrode assembly, and a pouch film including an accommodating part in which the electrode assembly is disposed and a sealing part formed by fusion of edges of the accommodating part, wherein the sealing part includes a pattern sealing part on one or more sides among four sides of the pouch-type secondary battery, and the pattern sealing part includes a plurality of sealings provided with one or more discontinuous parts, and a battery module including the pouch-type secondary battery as a unit cell.

A battery including a stack alternating between at least one anode and at least one cathode, a primary encapsulation system covering some of the faces of the stack, at least one anode contact member operable to make electrical contact between the stack and an external conductive element, and at least one cathode contact member operable to make an electrical contact between the stack and an external conductive element. An additional encapsulation system includes two frontal regions respectively covering a respective frontal region of the primary encapsulation system and two lateral regions which cover a respective lateral region devoid of any contact member of the primary encapsulation system. Each of the two frontal regions of the additional encapsulation system further cover the frontal ends respectively of the anode contact members and the cathode contact members. The frontal regions of the additional encapsulation system form a surface continuity with the lateral regions of the additional encapsulation system.

The present invention relates to a method for manufacturing a secondary battery and a pre-degassing device for manufacturing a secondary battery. The method for manufacturing the secondary battery comprises: an accommodation process of accommodating an electrode assembly in an accommodation part formed inside a battery case to form a cell; an electrolyte injection process of injecting an electrolyte into the accommodation part of the battery case; a primary aging process of elapsing a predetermined time so that the electrode assembly is impregnated into the electrolyte; a primary charging process of primarily charging and discharging the cell; a pre-degassing process of pressing the battery case to discharge a gas inside the electrode assembly to the outside of the electrode assembly; and a secondary aging process of elapsing a predetermined time so that the electrode assembly is impregnated into the electrolyte, wherein, in the pre-degassing process, the battery case is pressed while applying heat to the battery case.

A battery cell includes an electrode assembly and a packaging bag for accommodating the electrode assembly, where the battery cell further includes a first adhesive layer and a second adhesive layer, and the first adhesive layer is adhered to a side of the electrode assembly; and the second adhesive layer is disposed on an outermost surface of the electrode assembly to bond the packaging bag and the electrode assembly, and the first adhesive layer is disposed between the electrode assembly and the second adhesive layer. A battery is further provided, including a housing and the foregoing battery cell, where the battery cell is accommodated in the housing.

A battery cell includes an electrode assembly and a packaging bag for accommodating the electrode assembly, where the battery cell further includes a first adhesive layer and a second adhesive layer, and the first adhesive layer is adhered to a side of the electrode assembly; and the second adhesive layer is disposed on an outermost surface of the electrode assembly to bond the packaging bag and the electrode assembly, and the first adhesive layer is disposed between the electrode assembly and the second adhesive layer. A battery is further provided, including a housing and the foregoing battery cell, where the battery cell is accommodated in the housing.

A method for manufacturing a secondary battery includes manufacturing an electrode assembly having a stacked structure in which a negative electrode, an individual layer of a separator, a positive electrode, and an individual layer of the separator are repeated by alternately inserting the positive electrode and the negative electrode between the adjacent individual layers of the separator. Fold lines are formed on the separator at a predetermined interval, and the separator is folded in a zigzag shape along a vertical direction by the fold lines to form the plurality of individual layers; inserting the electrode assembly into a pouch; and discharging a gas from the Each of the positive electrode and the negative electrode is manufactured in a square shape so that remaining three sides except for one side facing the fold lines are opened.

A method for manufacturing a secondary battery includes manufacturing an electrode assembly having a stacked structure in which a negative electrode, an individual layer of a separator, a positive electrode, and an individual layer of the separator are repeated by alternately inserting the positive electrode and the negative electrode between the adjacent individual layers of the separator. Fold lines are formed on the separator at a predetermined interval, and the separator is folded in a zigzag shape along a vertical direction by the fold lines to form the plurality of individual layers; inserting the electrode assembly into a pouch; and discharging a gas from the Each of the positive electrode and the negative electrode is manufactured in a square shape so that remaining three sides except for one side facing the fold lines are opened.

A battery cell, a battery pack and an electronic device with improved durability by reducing bend-induced damage, whereby a battery cell includes at least two battery units, each including a plurality of electrode leads, an electrode assembly, an electrolyte solution and an inner pouch in which the electrode assembly and the electrolyte solution are received, wherein at least one of the plurality of electrode leads of one battery unit is inserted into the other battery unit and electrically connected to the electrode assembly, and an outer pouch including at least two receiving portions in which the at least two battery units are received respectively, and a bending portion in which a part of the plurality of electrode leads is disposed and a part between the at least two receiving portions is bent.