摘要:
A pouch type secondary battery which can prevent a cut portion from electrically contacting a protective circuit module, thereby preventing an electrical short circuit and acceleration of corrosion of a core material and enhancing safety includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator; a pouch case made of a flexible material, and having a container, insulated at least on its inner surface and accommodating the electrode assembly, and sealing portions along an edge of the container, the sealing portions including a first sealing portion through which electrode taps of the electrode assembly extend from the pouch case, and a second sealing portion and a third sealing portion respectively positioned at opposite sides of the first sealing portion, the second an third sealing portions being folded at least one time; a protective circuit module connected to the electrode taps and mounted on an outer surface of the first sealing portion; and a short circuit protector formed in at least one among the first through third sealing portions to prevent an electrical short circuit between each sealing portion and the protective circuit module.
摘要:
A pouch type secondary battery which can prevent a cut portion from electrically contacting a protective circuit module, thereby preventing an electrical short circuit and acceleration of corrosion of a core material and enhancing safety includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator; a pouch case made of a flexible material, and having a container, insulated at least on its inner surface and accommodating the electrode assembly, and sealing portions along an edge of the container, the sealing portions including a first sealing portion through which electrode taps of the electrode assembly extend from the pouch case, and a second sealing portion and a third sealing portion respectively positioned at opposite sides of the first sealing portion, the second an third sealing portions being folded at least one time; a protective circuit module connected to the electrode tips and mounted on an outer surface of the first sealing portion; and a short circuit protector formed in at least one among the first through third sealing portions to prevent an electrical short circuit between each sealing portion and the protective circuit module.
摘要:
A pouch type secondary battery which can prevent a cut portion from electrically contacting a protective circuit module, thereby preventing an electrical short circuit and acceleration of corrosion of a core material and enhancing safety includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator; a pouch case made of a flexible material, and having a container, insulated at least on its inner surface and accommodating the electrode assembly, and sealing portions along an edge of the container, the sealing portions including a first sealing portion through which electrode taps of the electrode assembly extend from the pouch case, and a second sealing portion and a third sealing portion respectively positioned at opposite sides of the first sealing portion, the second an third sealing portions being folded at least one time; a protective circuit module connected to the electrode tips and mounted on an outer surface of the first sealing portion; and a short circuit protector formed in at least one among the first through third sealing portions to prevent an electrical short circuit between each sealing portion and the protective circuit module.
摘要:
A pouch type secondary battery which can prevent a cut portion from electrically contacting a protective circuit module, thereby preventing an electrical short circuit and acceleration of corrosion of a core material and enhancing safety includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator; a pouch case made of a flexible material, and having a container, insulated at least on its inner surface and accommodating the electrode assembly, and sealing portions along an edge of the container, the sealing portions including a first sealing portion through which electrode taps of the electrode assembly extend from the pouch case, and a second sealing portion and a third sealing portion respectively positioned at opposite sides of the first sealing portion, the second an third sealing portions being folded at least one time; a protective circuit module connected to the electrode taps and mounted on an outer surface of the first sealing portion; and a short circuit protector formed in at least one among the first through third sealing portions to prevent an electrical short circuit between each sealing portion and the protective circuit module.
摘要:
A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate.
摘要:
A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate. Since the design margins of protruding portions of a separator which stick out on either side of each electrode plate are made different from each other, deformation of the separator due to heat applied during heat fusion can be prevented. Accordingly, electrical contact between electrode plates having different polarities can be prevented, thereby improving the stability of a battery.
摘要:
A battery unit and a lithium secondary battery employing the same are provided. The battery unit includes a positive electrode plate having a positive current collector and a positive active material layer formed on at least one plane of the positive current collector, a positive electrode lead electrically connected with the positive current collector, a negative electrode plate having a negative current collector and a negative active material layer formed on at least one plane of the negative current collector, a negative electrode lead electrically connected with the negative current collector, and a separator interposed between the positive electrode plate and the negative electrode plate, having a width greater than that of each electrode plate, and having different widths of protruding portions which stick out on either side of the electrode plate.
摘要:
Provided are an electrode assembly with improved active material coatings of electrodes, by which an increase in thickness or distortion in shape can be prevented even after repeated charge and discharge cycling, and a lithium ion cell having the electrode assembly. The electrode assembly includes a negative electrode formed by winding a stacked structure having a negative electrode starting portion made of a current collector from which the negative electrode tab extends at an upper end of the negative electrode, and a negative electrode coated portion extending from the negative electrode starting portion and having a negative electrode active material coated on at least one plane of the current collector, a positive electrode formed by winding a stacked structure having a positive electrode starting portion made of a current collector from which a positive electrode tab, spaced a predetermined distance apart from a negative electrode tab, extends at an upper end of the positive electrode, and a positive electrode coated portion extending from the positive electrode starting portion and having a positive electrode active material coated on at least one plane of the current collector, the positive electrode coated portion being spaced a predetermined distance apart from the negative electrode, and a separator interposed between the positive and negative electrodes and providing electrical insulation.
摘要:
A battery unit having at least two pouch type secondary battery cells and a single safety device serving each cell in the battery unit. Each individual battery or cell body fits into a space within a casing. The battery unit may use one or more casings. The battery cells are arranged such that the terminals of different battery cells are located near the terminals of other battery cells within the unit. These terminals are connected to the safety device. The safety device may be a safety circuit board that is positioned in a space within the battery unit so that the battery unit does not consume any more space than when no safety circuit board is used.
摘要:
A pouch-type lithium secondary battery including: a battery unit comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the separator is disposed between the positive and negative electrode plates; electrode tabs extending from each of the positive and negative electrode plates of the battery unit, respectively; a case having a space to accommodate the battery unit and sealing surfaces formed along the periphery of the space, wherein the case is sealed at the sealing surfaces by thermal fusion; and a protection circuit board 600 electrically connected to the electrode tabs. The protection circuit board is disposed parallel to an outer wall of the case. Since the electrode tabs are bent in an upright position with respect to the sealing surfaces, and the protection circuit board electrically connected to the bent electrode tabs is disposed between the outer wall of the case and the electrode tabs, the size of the sealing surfaces of the case can be minimized.