The present invention provide a pouch type secondary battery and a method for manufacturing the same. More particularly, the present invention provides a pouch type secondary battery and a method for manufacturing the same, in which a pouch case is formed in a folding manner without being subjected to a forming process (press process), such that there is no limit in a length, and a thickness of an inner space of the pouch case is not limited.

A formation cluster for connection to a lithium containing secondary battery in a cell formation system includes a connector, a charging module connected to the connector and configured to charge the lithium containing secondary battery, a pre-lithiation module connected to the connector and configured to diffuse lithium to electrode active material layers of the lithium containing secondary battery, a discharging module connected to the connector and configured to discharge the lithium containing secondary battery, and at least one microcontroller programmed to: charge the lithium containing secondary battery using the charging module, diffuse lithium to the electrode active material layers of the lithium containing secondary battery using the pre-lithiation module after the lithium containing secondary battery has been charged, and discharge the lithium containing secondary battery using the discharging module after lithium has been diffused to the electrode active material layers of the lithium containing secondary battery using the pre-lithiation module.

A battery module of the present invention is adaptable to be utilized in various configurations including and not limited to an overlapping battery cell packaging configuration and a vertical stack battery cell packaging configuration used in an automotive and non-automotive applications. The battery module has a plurality of battery heatsink assemblies with the cells disposed therebetween. A plurality of rods extend through the each heatsink assemblies to secure the heatsink assemblies and the cell with one another to form the battery module.

A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1):
RSM)n  (1)
where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

Provided is a method of manufacturing a secondary battery, in which scattering of an electrolyte is prevented while a degassing process is performed to prevent a product from being contaminated due to the scattering of the electrolyte. The method of manufacturing the secondary battery includes performing a formation process on a battery cell including a dead space to generate a gas within the battery cell, closing a piercing tool of a gas removing device to form a through hole in the dead space, thereby discharging the gas within the battery cell through the piercing tool, closing a sealing tool of the gas removing device after the gas is discharged to thermally bond an inner portion of the dead space that is adjacent to an electrode assembly within the battery cell, opening the piercing tool in the state where the sealing tool is closed, and opening the sealing tool after the piercing tool is opened.

An embodiment of the present invention is a pouch bending guide apparatus, for a secondary battery packaging system, for folding a pouch sheet (2A) by folding a bending jig (20) toward a base jig (30) with the pouch sheet (2A) placed on the base jig (30) and bending jig (20), the pouch bending guide apparatus comprising a stopping means (42) provided at least inside the bending jig (20) so as to prevent a bending lateral surface (2BS) of a pouch (2) from being pressed inside the pouch (2) by supporting at least one surface of the pouch (2) formed when the pouch sheet (2A) is folded by means of the bending jig (20).

An exterior material to be used for a battery comprises at least one pattern part formed in a machine direction (MD) of the exterior material, wherein the MD of the exterior material is a width direction of a battery including the exterior material, and a transverse direction (TD) of the exterior material is a longitudinal direction of the battery including the exterior material.

The present invention relates to a method for manufacturing a secondary battery and an apparatus for manufacturing a secondary battery. The method for manufacturing the secondary battery according to the present invention comprises: an accommodation process of accommodating an electrode assembly, in which electrodes and separators are alternately stacked, an electrolyte, and one side portion of electrode leads connected to the electrodes, in a pouch to form a cell; an activation process of charging the cell to activate the cell; a pressing process of sequentially pressing the cell through pressing rolls after the activation process to press the cell; and a degassing process of discharging an internal gas of the cell to the outside after the pressing process.

A method of manufacturing a lithium ion secondary battery includes: manufacturing an electrode assembly including a positive electrode layer, a separator, and a negative electrode layer; encapsulating the electrode assembly and an electrolytic solution in an exterior body; assembling a battery cell; alternately laminating a bag-shaped member and the battery cell; and performing initial charging until an initial charging voltage is reached while constraining the battery cell at a constant pressure along a stacking direction of the battery cell, wherein the bag-shaped member is encapsulated with a fluid.

A lithium ion battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material. The negative electrode includes a negative electrode active material and a specific metal. A void is located inside the negative electrode active material. The specific metal adheres to an outside surface and an inside surface of the negative electrode active material. The specific metal includes a dissolution potential and a deposition potential. The dissolution potential is lower than a potential at which the positive electrode active material releases Li ions. The deposition potential is higher than a potential at which the negative electrode active material stores the Li ions.