Abstract: A battery cell includes: an electrode assembly; a pouch case accommodating the electrode assembly therein; and an electrode lead including an outer lead protruding to an outside of the pouch case and an inner lead disposed between the outer lead and the electrode assembly, accommodated in the pouch case, and cut by expansion force of the pouch case.

Abstract: A battery cell is provided that includes an electrode assembly and a pouch case that accommodates the electrode assembly therein. Additionally, an electrode lead including an outer lead that protrudes outside the pouch case is provided and an inner lead is disposed between the outer lead and the electrode assembly, accommodated in the pouch case, and cut by tension applied when the pouch case expands.

Abstract: Disclosed is a solid electrolyte formed by coating an oxide-based lithium ion conductor on a sulfide-based compound. When an all-solid state battery is manufactured using the solid electrolyte of the present invention, interface resistance between the solid electrolyte and electrode materials may be reduced, and possibility of damage of a coated layer on a process of manufacturing the electrode such as pressing may be reduced, thereby improving output and life time of the battery. Further, storage and use may become easy because the solid electrolyte may be protected from moisture and oxygen in the air, thereby improving manufacturing efficiency of the battery.

Abstract: A battery overcharge protection device includes a pouch having a battery cell packaged therein. An electrode tab extends from an end of the battery cell for allowing flow of electricity therethrough and is composed of first and second electrode tab parts. A breaker is provided in the pouch and connected to the first and second electrode tab parts to separate the first and second electrode tab parts from each other upon expansion of the battery cell.

Abstract: Provided is an all-solid-state battery containing a nano-solid electrolyte which has excellent stability and enhanced battery performance and can be manufactured without changing an existing process. Due to substantially improved battery performance, as well as having excellent safety, the all-solid-state battery containing a nano-solid electrolyte may be widely used and further contribute to industrial development such as electric vehicles in which medium and large lithium ion rechargeable batteries are used.

Abstract: A high voltage battery for vehicles includes an electrode tab that is divided into a first part placed near a battery cell and a second part placed near a terminal. A pouch packages the battery cell therein. A housing is packaged in an interior of the pouch together with the battery cell and has an opening. A first part extension and a second part extension extend from the first part and the second part, respectively, that are inserted into the housing through the opening, and that come into contact with each other in the housing. A cushion is inserted in the housing and compresses the first part extension and the second part extension such that the first part extension and the second part extension come into close contact with each other.

Abstract: A pouch battery having improved overcharging safety includes a CID interrupting an electrical connection between an electrode assembly and a lead tab when the pouch is expanded. When the pouch is expanded, the CID discharges gas generated inside the pouch to the outside, and at the time of overcharging a secondary battery, the CID interrupts a flow of current introduced into the secondary battery and discharges the gas generated due to the overcharging to the outside of the pouch, thereby reducing an ignition risk and improving the overcharging safety.

Abstract: Disclosed is a positive electrode composite in an all-solid battery. In particular, contents of the electrolyte, the positive electrode material, and the conductive material are non-linearly changed from the electrolyte layer toward the metal current collector. Accordingly, as being closer to the electrolyte layer, ion conductivity is increased, and as being closer to the metal current collector, electron conductivity is increased, such that the electrochemical reactions may be actively performed in the entire internal portion of the positive electrode composite.

Abstract: A swelling current interrupt device (CID) includes: a battery unit connection terminal configured to be fixed to a pouch; and a lead tab connection terminal configured to be fixed to the pouch and electrically connected to the battery unit connection terminal, wherein any one of the battery unit connection terminal and the lead tab connection terminal is broken by an expansion force of the pouch which is generated when the pouch expands to interrupt the electrical connection between the battery unit connection terminal and the lead tab connection terminal.

Abstract: Disclsoed are a bipolar electrode, a bipolar all-solid battery manufactured by using the same, and a manufacturing method thereof. The bipolar electrode includes: a solid electrolyte; an anode slurry and a cathode slurry, each of which is provided on a first surface and a second surface of the solid electrolyte; spacers provided in the anode slurry and the cathode slurry; and a metal substrate provided in the anode slurry and the cathode slurry. Accordingly, an output and an energy density may be improved by cell integration through minimization of thickness of the cathode, the anode, and the electrolyte of the all-solid battery. Further, when the bipolar all-solid battery is manufactured using high voltage stability characteristic of the solid electrolyte, difference in an elongation rate or a compression rate among the elements may be reduced to secure or improve process stability and to minimize a cell defective rate.

Abstract: A battery system improving operation reliability of a swelling current interrupt device (CID) is provided. The battery system includes a cooling plate that forms an appearance of a battery in which the swelling CID interrupting a current flow is mounted and includes a swelling aperture formed therein. The swelling aperture induces an expansion of a pouch in which the swelling CID is embedded. Therefore, since the swelling aperture is formed in the cooling plate, improved operation reliability of the swelling CID than a battery system according to related art in which operation reliability was varied based on a thickness of a pouch cell is obtained.

Abstract: A high voltage battery for vehicles includes an electrode tab that is divided into a first part placed near a battery cell, and a second part placed near a terminal. A first part extension extends from the first part and is fixed to a lower pouch. A second part extension extends from the second part, comes into contact with the first part extension, has elasticity, and is fixed at an upper end thereof to an upper pouch. A hook part extends from the first part extension and holds the second part extension by grasping an edge of the second part extension.

Abstract: A battery module is provided, including: a plurality of battery packs teach being provided with an anode terminal and a cathode terminal; a plurality of coupling units each having ends coupled to the anode terminal and the cathode terminal of an adjacent battery pack, respectively, to couple the plurality of battery packs in series; an operation unit that is provided on one end of the coupling unit and ascends in accordance with an increasing internal pressure of the battery pack to open a coupling between the one end of the coupling unit and the terminals of the battery pack by raising the one end of the coupling unit; and a bypass unit having one end disposed over the one end of the coupling unit and the other end coupled to the other end of an adjacent coupling unit to maintain the other battery packs coupled in series, except for the battery packs the internal pressures of which have increased, when the one end of the coupling unit ascends by the operation unit.

Abstract: A system for controlling a battery to extend a driving mileage is provided. The system supplies a high voltage required to drive a motor by connecting a plurality of batteries in series by turning off a battery switching unit during engaged of an accelerator and balances voltage between the plurality of batteries. A voltage deviation is managed by connecting the plurality of batteries in parallel by turning on the battery switching unit when the accelerator is disengaged. The system includes a plurality of battery modules and a battery switching unit configured to connect the plurality of battery modules in parallel when an accelerator is disengaged and connect the plurality of battery modules in series when the accelerator is engaged. A motor driving unit is configured to receive an output by the battery switching unit when the accelerator is engaged.

Abstract: A rechargeable battery is provided, including: a cabinet provided with two electrode terminals for connecting inner and outer parts thereof, to which an anode and a cathode are connected, respectively, and being formed with a cooling fluid channel on a bottom surface of the cabinet; an electrode plate received in the cabinet together with an electrolyte such that both ends of the electrode plate are connected to the internal electrode terminal; and a cover which covers an opened portion of the cabinet and is wound together with the cabinet while an edge of the cover overlaps with the edge of the cabinet to seal the cabinet.

Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.

Abstract: A high voltage battery for vehicles includes an electrode tab that is divided into a first part placed near a battery cell and a second part placed near a terminal. A pouch packages the battery cell therein. A housing is packaged in an interior of the pouch together with the battery cell and has an opening. A first part extension and a second part extension extend from the first part and the second part, respectively, that are inserted into the housing through the opening, and that come into contact with each other in the housing. A cushion is inserted in the housing and compresses the first part extension and the second part extension such that the first part extension and the second part extension come into close contact with each other.

Abstract: A battery overcharge protection device includes a pouch having a battery cell packaged therein. An electrode tab extends from an end of the battery cell for allowing flow of electricity therethrough and is composed of first and second electrode tab parts. A breaker is provided in the pouch and connected to the first and second electrode tab parts to separate the first and second electrode tab parts from each other upon expansion of the battery cell.

Abstract: A high voltage battery for vehicles is provided and includes an electrode tab that is divided into a first part disposed substantially adjacent to a battery cell and a second part disposed substantially adjacent to a terminal. A first part extension extends from the first part and is fixed to a lower pouch and a second part extension extends from the second part and is fixed to an upper pouch. A conductive polymer layer bonds the first part extension and the second part extension to each other and conducts electricity between the first part extension and the second part extension.

Abstract: A high voltage battery for vehicles includes an electrode tab that is divided into a first part placed near a battery cell, and a second part placed near a terminal. A first part extension extends from the first part and is fixed to a lower pouch. A second part extension extends from the second part, comes into contact with the first part extension, has elasticity, and is fixed at an upper end thereof to an upper pouch. A hook part extends from the first part extension and holds the second part extension by grasping an edge of the second part extension.