Abstract: Presented is a module pack for a secondary battery including a plurality of cell batteries, each of which has a pouch which holds and seals a rechargeable electrode assembly and planar battery taps for negative and positive electrodes for inducing electric current from the electrode assembly to an outside, which are connected in parallel or in series, and which are housed in a case. Each battery tap includes a vertical plate part that is connected to the electrode assembly at a first end thereof and vertically extends at a second end thereof, a horizontal plate part that is bent at and horizontally extends from the second end of the vertical plate part at a right angle, and at least one fastening recess that is integrally formed in a leading end of the horizontal plate part and allows a fastening member to enter in a lateral direction.

Abstract: The present invention relates to a charge equalization apparatus, which allows the primary and secondary windings of a transformer to be easily fabricated, can control the flow of charge to batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into a battery currently being charged.

Abstract: The present invention relates to a charge equalization apparatus, which allows the primary and secondary windings of a transformer to be easily fabricated, can control the flow of charge to batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into a battery currently being charged.

Abstract: The present invention relates, in general, to a charge equalization apparatus with series-connected battery cells and, more particularly, to a charge equalization apparatus, in which series-connected battery cells (B1 to BN) are connected in parallel with the primary windings (Mi 1 to M1N) of transformers (T1 to TN), switches (S1 to SN) for controlling the flow of current of the primary windings are connected in series with the primary windings (M1 1 to M1N), and multiple secondary windings (M21 to M2N) corresponding to the primary windings are connected in parallel with each other.

Abstract: A lithium secondary battery includes: a first electrode having a first current collector, and first active material patterns formed on the first current collector such that the first active material patterns are symmetrically disposed with a first center non-coated portion formed therebetween; a second electrode having a second current collector, and second active material patterns formed on the second current collector such that the second active material patterns are symmetrically disposed with a second center non-coated portion formed therebetween; a first electrode tab connected to the first center non-coated portion; and a second electrode tab connected to the second center non-coated portion.

Abstract: The present invention relates to a charge equalization apparatus, which allows the primary and secondary windings of a transformer to be easily fabricated, can control the flow of charge to batteries depending on the charged states of series-connected batteries, and can prevent overcurrent from flowing into a battery currently being charged.

Abstract: A method of fabricating a lithium secondary battery, which improves charge-discharge characteristics, lifespan, and temperature characteristics of the battery and which includes interposing a separator between a positive electrode plate and a negative electrode plate, thus manufacturing an electrode assembly; housing the electrode assembly in a battery case, introducing an additive-containing electrolytic solution, and then sealing the battery case; subjecting the sealed battery case to pre-charging, and then removing gas generated by the pre-charging; and subjecting the battery case to formation, wherein the additive is one or more selected from among LiF2BC2O4, 3,9-divinyl-2,4,8,10-tetraoxaspiro[5,5]undecane, LiBC(C2O4)2, poly(ethyleneglycol)borate and derivatives thereof, halogen-substituted carbonate, and vinyl silane, and the pre-charging is conducted in a range of 50˜100% of a battery capacity.

Abstract: The present invention relates to a unit set having a plurality of lithium rechargeable batteries, which can receive and protect a plurality of lithium rechargeable batteries comprised of an pouch and an electrode tap and facilely change a voltage and a capacity thereof according to a degree of freedom in a stack structure of the lithium rechargeable batteries, and a set having a plurality of the unit sets.

Abstract: A uniform air blowing and cooling structure of a high capacity battery system includes a cell assembly having battery cells which are located in parallel at regular intervals while defining cooling channels therebetween; a housing accommodating the cell assembly therein and having a first space and a second space which are defined on both sides of the cell assembly perpendicular to a direction in which the cooling channels are defined; and an inlet and an outlet defined at both ends of the housing to respectively communicate with the first and second spaces defined in the housing, wherein the inlet is defined at one end of the first space and the outlet is defined at both ends of the second space so that air can flow along a substantially “h” shaped fluid path in the housing, whereby cooling of the battery cells in the respective cooling channels can be uniformly carried out.

Abstract: The present invention relates, in general, to a charge equalization apparatus for batteries and, more particularly, to a charge equalization apparatus, in which the primary windings (M11 to M1N) of a number of transformers (T1 to TN) corresponding to the number of battery cells are connected in parallel with each other, a switch (S) for controlling the flow of current of the primary windings (M11 to M1N) of the parallel-connected transformers is connected in series with the parallel-connected primary windings, respective secondary windings (M21 to M2N) corresponding to the primary windings are connected in parallel with the battery cells, and the battery cells are connected in series with each other.

Abstract: Disclosed herein are a high power lithium unit cell and a high power lithium battery pack having the high power lithium unit cell. The present invention increases the width of an electrode terminal of a lithium battery, thus reducing heat generation and a potential drop due to resistance of the electrode terminal, therefore efficiently eliminating the generated heat.

Abstract: A battery management system according to the present invention comprises a battery module consisted of a plurality of batteries connected in series; a switch module connected in parallel to the battery module; a voltage sensor measuring a voltage of each battery composing the battery module; a charge equalizer causing each battery composing the battery module to be charged, discharged or charged/discharged; and a microprocessor controlling the switch module to determine whether to charge or discharge each battery composing the battery module according to the voltage values measured by the voltage sensor and; wherein the voltage sensor and the charge equalizer are connected in parallel to each battery composing the battery module by the switch module.

Abstract: Disclosed is a safety apparatus for responding to a battery short-circuit, and more particularly a safety apparatus for use in the event of a short-circuited of a high power battery, in which a PTC function is integrated into a tab of a high power battery. The safety apparatus for responding to a short-circuit of a high power battery comprises a casing, a battery part including a first electrode plate, a separator, and a second electrode plate arranged in that order and disposed inside the casing, a first tab connected to one of four edges of the first electrode plate via a first tab welding part and protruding from the casing, and a second tab connected to one of four edges of the second electrode plate via a second tab welding part and protruding from the casing, wherein a portion of the first tab ruptures when the first tab and the second tab are short-circuited, thus preventing the first electrode plate and the second electrode plate from being short-circuited.

Abstract: A two-stage charge equalization apparatus for a series-connected battery string comprises a battery module having a plurality of batteries connected in series; a battery string having M (M?2) battery modules connected in series; M charge control switch modules connected in parallel to each of the M battery modules; M second DC/DC converters connected to each of the M charge control switch modules; a single first DC/DC converter connected to the M second DC/DC converter; and a microprocessor controlling the charge control switch module, wherein the first DC/DC converter is inputted with an overall potential of the battery string and outputs a potential lower than the potential inputted and each of batteries composing the battery module shares the second DC/DC converter using the charge control switch module.

Abstract: The present invention relates to an automatic charge equalization apparatus and method having an automatic PWM generating means for a series-connected battery string. The automatic charge equalization method and apparatus for a series-connected battery string according to the present invention can improve charge equalization by accomplishing charge equalization operation after comparing the potential of the corresponding battery cell with the average potential of the plurality of battery cells including the corresponding battery cell upon charging or discharging the corresponding battery cell.

Abstract: Disclosed herein is a structure of layering unit cells for a lithium polymer battery, in which electrode terminals are provided on surfaces of the respective unit cells for the lithium polymer battery, and are alternately layered, thus allowing the unit cells to be connected in series through only a layering operation without an additional connecting device. The battery system includes first and second unit cells each having a pouch and anode and cathode terminals which are connected to a surface of the pouch and are oppositely bent in upward and downward directions. In this case, the cathode terminal of the second unit cell is directly connected to the anode terminal of the first unit cell.

Abstract: The present invention relates to a charge equalization apparatus, in which series-connected batteries are divided into modules having certain sizes, and intra-module charge equalization and inter-module charge equalization are simultaneously performed, thus improving charge equalization performance and reducing the circuit size.

Abstract: Disclosed herein is a case which protects a plurality of flexible lithium polymer unit cells, has a compact structure to reduce volume, has a simple assembly process, and minimizes heat generated during a high-power charging or discharging operation. The battery case includes a pouch support frame to support a pouch of a unit cell having the pouch and electrode terminals. A heat radiating part having the shape of a shelf is provided on a surface of the pouch support frame, and defines a space for dispersing heat generated from the pouch. A terminal support having the shape of a wall is provided on an edge of the heat radiating part, thus supporting the electrode terminals of the unit cell.

Abstract: A method of fabricating a lithium secondary battery, which improves charge-discharge characteristics, lifespan, and temperature characteristics of the battery and which includes interposing a separator between a positive electrode plate and a negative electrode plate, thus manufacturing an electrode assembly; housing the electrode assembly in a battery case, introducing an additive-containing electrolytic solution, and then sealing the battery case; subjecting the sealed battery case to pre-charging, and then removing gas generated by the pre-charging; subjecting the battery case to formation; and removing gas generated by the formation, wherein the additive is one or more selected from among LiF2BC2O4, 3,9-divinyl-2,4,8,10-tetraoxaspiro[5,5]undecane, LiBC(C2O4)2, poly(ethyleneglycol)borate and derivatives thereof, halogen-substituted carbonate, and vinyl silane, and the pre-charging is conducted in a range of 10% or less of a battery capacity.

Abstract: This invention relates to a method of manufacturing an electrode for a secondary battery, which enables cost savings and the manufacture of products having various sizes and shapes. The method includes (A) preparing an electrode plate, (B) cutting the electrode plate to conform to the width of the electrode, thus providing a unit electrode plate, and (C) removing at least one of the corner regions of the unit electrode plate.