Abstract: An inverter module according to an embodiment of the present invention comprises: a high voltage circuit unit which generates an inverter control voltage and a motor driving voltage by using a first DC voltage; a high voltage circuit pattern which electrically connects the high voltage circuit unit; a low voltage circuit unit which communicates with an external device by using a second DC voltage having a smaller magnitude than the first DC voltage; and a low voltage circuit pattern which electrically connects the low voltage circuit unit. The high voltage circuit pattern and the low voltage circuit pattern are spaced apart from each other.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein a gas discharge guiding unit is inserted in the lead film, the battery case includes a cover portion extending from the sealing portion, and the cover portion is located on the lead film and protrudes in an outer direction of the battery case.

Abstract: The present disclosure relates to a secondary battery comprising an electrode assembly having an electrode lead attached thereto, a case comprising a receiving portion in which the electrode assembly is received and a sealing portion comprising a sealant resin and configured to seal the electrode assembly, a lead film configured to cover a portion of an outer surface of the electrode lead and interposed between the electrode lead and the case, a vent area disposed in at least a portion of the case, and a vent member comprising a first layer comprising a resin having lower melting point than the sealant resin, and a second layer disposed on at least one surface of the first layer and comprising an adhesive material. The vent member may be inserted into the vent area. A thickness of the second layer may be equal to or smaller than 5 ?m.

Abstract: A secondary battery includes: an electrode assembly including electrode sheets and a separator interposed between the electrode sheets; a pouch-like battery casing in which the electrode assembly is received; an electrode lead connected to the electrode assembly and protruding out from the battery casing; and a lead film covering the electrode lead and interposed between the electrode lead and the battery casing, wherein the lead film includes an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and the inner layer includes a material having a higher air permeability as compared to the outer layer.

Abstract: An electrode lead for a secondary battery includes a metal substrate, and a coating layer formed on the surface of the metal substrate, wherein at least one surface of the top surface and the bottom surface of the electrode lead has a gas release portion having a structure formed by surface-treatment with a non-adhesive material, or by removing the coating layer. A secondary battery including the electrode lead is also disclosed.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is configured to be mounted, and a sealing portion formed by sealing an outer periphery of the battery case; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of a first side and a second side of the electrode lead, wherein the lead film includes a first adhesive layer and a second adhesive layer, and a moisture removal layer is disposed between the first adhesive layer and the second adhesive layer, and the moisture removal layer includes a getter material.

Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly, a case for accommodating the electrode assembly and a vent member. The vent member is configured to protrude to the outside of the case, and one end of the vent member protruding to the outside of the case is joined to an outer side of the case.

Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly; an electrode lead attached to the electrode assembly; a case configured to accommodate the electrode assembly therein; a lead film formed to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; and a vent member, wherein the case contains a sealant layer, and a thermal conductive layer is included in the sealant layer.

Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly; an electrode lead attached to the electrode assembly; a case including an accommodation portion for accommodating the electrode assembly and a sealing portion containing a sealant resin and formed to seal the electrode assembly; a lead film formed to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; and a vent member containing a linear low-density polyethylene having a comonomer with a carbon number of 6 or more, wherein the sealing portion has a vent inducing region including the vent member, and a width of the vent inducing region is smaller than a width of the sealing portion other than the vent inducing region.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein the lead film includes a first stepped portion protruding in a direction opposite to the electrode lead, the sealing portion includes a second stepped portion surrounding an outer surface of the first stepped portion, and a gas discharge guiding unit is inserted in the first stepped portion.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof; an electrode lead electrically connected to an electrode tab included in the electrode assembly; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein a gas discharge guiding unit is inserted in the lead film, the sealing portion includes a first sealing portion located on the gas discharge guiding unit and a second sealing portion located at both sides of the first sealing portion, and based on a protruding direction of the electrode lead, a width of the first sealing portion is smaller than a width of the second sealing portion.

Abstract: Disclosed herein is a secondary battery. The second battery can includes an electrode assembly, an electrode lead attached to the electrode assembly, and case configured to accommodate the electrode assembly therein. A lead film can be disposed around a part of an outer surface of the electrode lead and interposed between the electrode lead and the case. A vent region can be formed in at least a part of the case. A vent member can be disposed in the vent region. The vent member can have a structure defining a thickness and contain a linear low-density polyethylene having a comonomer with a carbon number of 6 or more. The thickness can be more than 50 ?m and less than 200 ?m.

Abstract: Disclosed herein is a secondary battery, which includes an electrode assembly; an electrode lead attached to the electrode assembly; a case configured to accommodate the electrode assembly therein; a lead film formed to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; a vent region formed in at least a part of the case; and a vent member inserted into the vent region and having a structure of three or more layers, wherein the vent member contains a linear low-density polyethylene having a comonomer with a carbon number of 6 or more in outermost layers and contains a resin having a higher melting point than the linear low-density polyethylene having a comonomer with a carbon number of 6 or more in a middle layer.

Abstract: A secondary battery includes: an electrode assembly including electrode sheets and a separator interposed between the electrode sheets; a pouch-like battery casing in which the electrode assembly is received; an electrode lead connected to the electrode assembly and protruding out from the battery casing; and a lead film covering the electrode lead and interposed between the electrode lead and the battery casing, wherein the lead film includes an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and the inner layer includes a material having a higher air permeability as compared to the outer layer.

Abstract: Disclosed is a battery cell including a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. A gas discharge unit can be inserted into the sealing portion and fused together with the sealing portion. The gas discharge unit including a first layer and a second layer and having a folded structure based on a first border line such that the gas discharge unit is open toward the inside of the battery case and the first layer becomes an outer surface of the gas discharge unit. The first layer and the sealing portion being in contact with each other.

Abstract: Disclosed herein is a secondary battery with an electrode assembly including a positive electrode, a negative electrode and a separator interposed therebetween. A positive electrode tab may be connected electrically to a positive electrode lead and a negative electrode tab may be connected electrically to a negative electrode lead. The positive and negative electrode leads may be exposed to the outside through a sealing portion of a battery casing. A positive electrode insulation film and a negative electrode insulation film may be attached to a portion where each of the respective electrode leads contact the sealing portion. At least the positive electrode insulation film or the negative electrode insulation film may have a vent portion surface-treated with a non-adhesive material between the insulation film and the respective electrode lead at the portion where the electrode lead is attached.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof by heat fusion; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein the lead film has a dented portion recessed toward an inside of the battery case, and the dented portion is opened toward an outside of the battery case.

Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. A gas discharge portion can be inserted into the sealing portion. The gas discharge portion can protrude from the inside of the battery case toward the outside of the battery case. The gas discharge portion can include a non-adhesive layer and an adhesive layer located on the non-adhesive layer. The non-adhesive layer and the adhesive layer can be bent to be opened toward the inside of the battery case.

Abstract: Disclosed herein is a secondary battery. The secondary battery can include an electrode assembly, an electrode lead attached to the electrode assembly, a case configured to accommodate the electrode assembly, a lead film formed to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case, a vent region formed in at least a part of the case, and a vent member inserted into the vent region and having a structure of three or more layers including a first resin in a lowermost layer, a second resin in an uppermost layer, and a third resin in a middle layer. The second resin can be a resin having a higher melting point than the first resin, and the third resin can be a resin having a higher melting point than the second resin.

Abstract: A secondary battery includes a gas discharge portion configured to discharge only gas, whereby safety of the secondary battery is improved while performance and lifespan of the secondary battery are improved. Also described are a secondary battery manufacturing method, and more particularly a secondary battery including an electrode assembly and a case including a receiving portion configured to receive the electrode assembly, a sealed portion formed as the result of hermetically sealing the periphery of the receiving portion, and a gas discharge portion disposed in the sealed portion, the gas discharge portion having one end disposed in contact with the receiving portion and the other end disposed in contact with the outside, the gas discharge portion being configured to selectively discharge only gas.