The present invention features a pouch comprising a single layer of polymer material having a first surface and a second surface, wherein the second surface is disposed to define an interior space surrounded by the second surface of the pouch, and wherein the first surface is disposed to define the exterior of the pouch, wherein the single layer has a uniform thickness between the first surface and second surface, wherein the polymer material comprises a liquid crystal polymer, and wherein the pouch has a water vapor transmission rate of less than 0.1 g/m2/day between the interior space and the first surface of the pouch.

A secondary battery configured to effectively estimate the life or degradation of the secondary battery as the secondary battery degrades includes a packaging material, an electrode assembly, a first electrode lead, a second electrode lead, a first measuring lead, and a second measuring lead. The electrode assembly includes a stack having a plurality of first electrode plates at respective first locations within the stack and a plurality of second electrode plates at respective second locations within the stack, the first and second locations alternating with one another and having a separator interposed between each of the first and second locations. The electrode assembly further includes a first measuring plate and a second measuring plate having the same polarity as the first electrode plates and located at at least one of the first locations within the stack.

Provided a battery cell having a plurality of electrodes and a battery module using the same. In order to configure the battery module only by connections of the electrodes without including a separate bus bar and improve the degree of freedom of the connections, the battery cell having cathode terminals and anode terminals protruding to the outside includes: a plurality of electrode terminals selected from the cathode terminals or the anode terminals and formed on both sides of the battery cell opposing each other. The battery cell having the plurality of electrodes and the battery module formed is various forms according to a layout of a vehicle using the same may be configured.

Disclosed is a manufacturing method of a pouch battery. The pouch battery includes a shell and an energy conversion element, the energy conversion element being provided with an electrical connector protruding outward therefrom, the shell forming a closed cavity therein and being provided with a through hole; and the pouch battery further includes a terminal connected to the through hole in a sealed manner; the manufacturing method includes: placing the energy conversion element into the cavity; connecting the electrical connector to the terminal by welding; injecting electrolyte into the cavity and sealing the cavity; and activating the pouch battery.

Disclosed is a manufacturing method of a pouch battery. The pouch battery includes a shell and an energy conversion element, the energy conversion element being provided with an electrical connector protruding outward therefrom, the shell forming a closed cavity therein and being provided with a through hole; and the pouch battery further includes a terminal connected to the through hole in a sealed manner; the manufacturing method includes: placing the energy conversion element into the cavity; connecting the electrical connector to the terminal by welding; injecting electrolyte into the cavity and sealing the cavity; and activating the pouch battery.

A system for a pouch cell casing configured for use in an electric aircraft includes at least a pouch cell. The at least a pouch cell includes at least a pair of cell tabs, a battery cell, a pouch substantially encompassing the battery cell and the at least a pair of cell tabs. The at least a pouch cell includes at least a first side, a cell casing configured to substantially encompass the at least a pouch cell and including a first face disposed parallel and adjacent to the at least a first side, a second face disposed perpendicular and affixed to the first face, and at least an opening disposed on the first face opposite and adjacent to the at least a first side.

A system for a pouch cell casing configured for use in an electric aircraft includes at least a pouch cell. The at least a pouch cell includes at least a pair of cell tabs, a battery cell, a pouch substantially encompassing the battery cell and the at least a pair of cell tabs. The at least a pouch cell includes at least a first side, a cell casing configured to substantially encompass the at least a pouch cell and including a first face disposed parallel and adjacent to the at least a first side, a second face disposed perpendicular and affixed to the first face, and at least an opening disposed on the first face opposite and adjacent to the at least a first side.

The present invention relates to a pouch-shaped battery case manufacturing method including (a) locating a laminate sheet for pouch-shaped battery cases on a lower press die, (b) pressing the laminate sheet using an upper press die to form an electrode assembly receiving portion, (c) forming a venting guide portion in the bottom of the electrode assembly receiving portion, and (d) separating a pouch-shaped battery case having the electrode assembly receiving portion and the venting guide portion formed therein from the lower press die.

Disclosed are a pouch type secondary battery, a battery pack, and a method for manufacturing the pouch type secondary battery. According to one aspect of the present invention, in an exterior accommodating an electrode assembly, a sealing part is formed along a circumference of the electrode assembly. The sealing part includes a first sealing part formed to cover an electrode lead, and one end of the first sealing part is formed below an upper end of a circumference of a cup formed in the pouch.

Disclosed are a pouch type secondary battery, a battery pack, and a method for manufacturing the pouch type secondary battery. According to one aspect of the present invention, in an exterior accommodating an electrode assembly, a sealing part is formed along a circumference of the electrode assembly. The sealing part includes a first sealing part formed to cover an electrode lead, and one end of the first sealing part is formed below an upper end of a circumference of a cup formed in the pouch.