Abstract: A pouch type battery cell includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator located between the first and second electrode plates; a first case having a first accommodating portion in which at least one portion of the electrode assembly is accommodated, wherein the first accommodating portion is generally concave; and a second case covering the first case, wherein the first case includes a metal layer including steel or hard aluminum, and wherein a depth of the first accommodating portion is between about 1 mm and about 4 mm, and wherein a thickness of the metal layer is between about 40 ?m and about 100 ?m.

Abstract: There are provided a wireless communication terminal and a method for supplying power thereof. The wireless communication terminal includes a main battery, an auxiliary battery and a controller. The main battery is attachably/detachably coupled to the terminal to supply power to the terminal. The auxiliary battery is built in the terminal. The controller supplies power to the terminal, using the auxiliary battery, when the main battery is separated from the terminal or when the main battery is discharged. In the wireless communication terminal, the main battery is a high-power and high-capacity battery, and the auxiliary battery is a low-power and low-capacity battery.

Abstract: A battery includes a first electrode terminal of a first shape, a second electrode terminal of a second shape, a third electrode terminal of a third shape, and a fourth electrode terminal of a fourth shape. The first and third electrode terminals have a first polarity, and the second and fourth electrode terminals have a second polarity opposite to the first polarity. The first shape is complementary to the second shape, and the third shape is complementary to the fourth shape. The first and second electrode terminals may be on opposing sides of the battery, and the third and fourth electrode terminals may be on a same side of the battery. The first and second electrode terminals may establish series connections of the battery, and the third and fourth electrode terminals may establish parallel connections of the battery.

Abstract: An electronic device includes an electronic device main body, a battery pack receptacle in the electronic device main body, and at least one variable member at an inner side of the battery pack receptacle, the variable member being movable within the space of the battery pack receptacle.

Abstract: A portable electronic apparatus includes a terminal, a grip portion and a controller. A first battery is provided inside the terminal. The grip portion is positioned outside of the terminal and includes a second battery unit electrically connected to the terminal. The controller controls the second battery unit to supply power to the terminal before power of the first battery unit is supplied to the terminal. Accordingly, the controller first supplies the power of the second battery unit to the terminal rather than the power of the first battery unit.

Abstract: A pouch type battery cell includes an electrode assembly having a first electrode plate, a second electrode plate, and a separator located between the first and second electrode plates; a first case having a first accommodating portion in which at least one portion of the electrode assembly is accommodated, wherein the first accommodating portion is generally concave; and a second case covering the first case, wherein the first case includes a metal layer including steel or hard aluminum, and wherein a depth of the first accommodating portion is between about 1 mm and about 4 mm, and wherein a thickness of the metal layer is between about 40 ?m and about 100 ?m.

Abstract: A secondary battery includes a high-capacity electrode portion, a high-power electrode portion, an electrolyte and a battery case. The high-capacity electrode portion includes a first positive electrode plate, a first negative electrode plate opposite to the first positive electrode plate, and a separator between the first positive electrode plate and the first negative electrode plate. The high-power electrode portion includes a second positive electrode plate, a second negative electrode plate opposite to the second positive electrode plate, and a separator between the second positive electrode plate and the second negative electrode plate. The electrolyte contacts the high-capacity electrode portion and the high-power electrode portion. The battery case accommodates the high-capacity electrode portion, the high-power electrode portion and the electrolyte therein.

Abstract: The present invention provides a positive electrode for a lithium rechargeable battery, a lithium rechargeable battery including the same, and a method of fabricating the lithium rechargeable battery. An antigelling agent is added in a positive electrode slurry to prevent gelation, and the positive electrode of the present invention is made with the antigelling agent added positive electrode slurry. During fabrication of the positive electrode by using a lithium nickel-based or manganese-based composite oxide for a positive electrode active material, gelation is prevented. A lithium rechargeable battery made with the positive electrode of the present invention shows a high capacity and excellent stability and reliability.

Abstract: A cylinder type lithium ion secondary battery has a center pin that is inserted into an electrode assembly after the injection of electrolyte to increase impregnation of the electrolyte. The battery includes an electrode assembly, a case to accommodate the electrode assembly, a center pin inserted into the center of the electrode assembly, a cap assembly to seal an upper end opening of the electrode assembly, and an upper insulating plate disposed between the electrode assembly and the cap assembly. The upper insulating plate has a hollow formed in the center through which the center pin can penetrate, and the hollow has a center pin separation preventing unit bendable only toward the electrode assembly when the center pin penetrates through the hollow.

Abstract: A cylindrical lithium ion secondary battery includes an electrode assembly; a center pin positioned within the electrode assembly and having upper and lower ends that are closed; a can containing the electrode assembly and the center pin; and a cap assembly coupled to the top of the can. The center pin can include a body extending a predetermined length with its upper and lower end open and at least one closure member adapted to close the upper and lower ends of the body and to melt or fracture at a predetermined temperature. The center pin body may also or alternatively include a circuit member positioned inside the center pin and adapted to be short-circuited in the case of overcharging and to consume current.

Abstract: A lithium ion secondary battery in which an electrode assembly is easily impregnated with an electrolyte is provided. The lithium ion secondary battery includes an electrode assembly wrapped by a sealing tape, an upper insulating plate positioned on the top of the electrode assembly, a lower insulating plate positioned at the bottom of the electrode assembly, a case for accommodating the electrode assembly, and a cap assembly for sealing the case. In one embodiment, the upper insulating plate has holes which may include a form of a mesh. In another embodiment, the lower insulating plate has various shapes of recesses on the surface. The surface of the lower insulating plate may be coated with a material that has an affinity for the electrolyte. An inner surface of the case may have various shapes of recesses or grooves. The sealing tape may be coated with a material that has an affinity for an electrolyte.

Abstract: A cylindrical lithium ion secondary battery includes an electrode assembly; a center pin positioned within the electrode assembly and having upper and lower ends that are closed; a can containing the electrode assembly and the center pin; and a cap assembly coupled to the top of the can. The center pin can include a body extending a predetermined length with its upper and lower end open and at least one closure member adapted to close the upper and lower ends of the body and to melt or fracture at a predetermined temperature. The center pin body may also or alternatively include a circuit member positioned inside the center pin and adapted to be short-circuited in the case of overcharging and to consume current.

Abstract: A cylindrical lithium ion secondary battery includes an electrode assembly; a center pin positioned within the electrode assembly and having upper and lower ends that are closed; a can containing the electrode assembly and the center pin; and a cap assembly coupled to the top of the can. The center pin can include a body extending a predetermined length with its upper and lower end open and at least one closure member adapted to close the upper and lower ends of the body and to melt or fracture at a predetermined temperature. The center pin body may also or altematively include a circuit member positioned inside the center pin and adapted to be short-circuited in the case of overcharging and to consume current.

Abstract: A center pin and a lithium ion secondary battery are provided. The center pin has a hollow body and a solid extinguishant is disposed inside the hollow body. The solid extinguishant has a certain shape that can fit into the hollow body, and can be made by compressing a powder extinguishing substance. Top and bottom of the center pin are initially closed by blocking members to reduce a dead volume in a battery. The top and bottom of the center pin open at high temperature so that the solid extinguishant is liquefied and flows out of the center pin. The liquefied extinguishant at the high temperature prevent the battery from igniting.

Abstract: A lithium ion secondary battery including an electrode assembly, a center pin positioned within the electrode assembly, a variable-length member coupled to the center pin, the variable-length member adapted to increase in length when an interior temperature of the center pin reaches a critical temperature, a can containing the electrode assembly, the center pin, and the variable-length member, and a cap assembly coupled to the can, the cap assembly having safety means fracturable in response to the variable-length member being increased in length.

Abstract: A center pin for a secondary battery, and a secondary battery including the same, are disclosed. The center pin is capable of efficiently preventing generation of heat, ignition and explosion of the secondary battery as may be caused by overcharge or exposure to high temperatures. The center pin comprises a body having a predetermined length, a fluid inserted into the body, and sealing members for sealing the body. The secondary battery comprises an electrode assembly including a positive electrode plate, a negative electrode plate and a separator interposed between the positive electrode plate and the negative electrode plate, a center pin comprising a fluid disposed in the electrode assembly, a can accommodating the electrode assembly and the center pin, and a cap assembly sealing the can.

Abstract: A lithium secondary battery, and more particularly, a lithium secondary battery which can improve the impregnation of an electrolyte solution either by modifying the material of a protection layer, such as a laminating tape and others, to be formed to protect the elimination of active materials, into a material with an affinity for the electrolyte solution, or by coating the material of an existing protection layer with an ingredient with an affinity for the electrolyte solution.

Abstract: Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin whose top and bottom ends are blocked by a thermal cut-off composition to reduce the void volume inside a bare cell during initial overcharge. The thermal cut-off composition melts at a temperature within a specific temperature range, e.g. between about 80 and about 250° C. This prevents the battery from exploding and igniting. Thus, the inventive lithium rechargeable batteries have improved thermal stability.

Abstract: Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin having a compressed compression spring positioned within a thermal cut-off composition to reduce the void volume inside a bare cell during initial overcharge. The thermal cut-off composition melts at a temperature within a specific temperature range, e.g. between about 80° C. and about 250° C. This prevents the battery from exploding and igniting. Thus, the inventive lithium rechargeable batteries have improved thermal stability.

Abstract: Electrode assemblies easily impregnated with an electrolyte are provided. A sealing tape attached to the outer circumference of the electrode assembly comprises a material having an affinity for the electrolyte. Alternatively, the entire sealing tape or a portion of the tape is coated with the material. In another alternative, the surface of the sealing tape is rough, thereby improving wetting of the tape by the electrolyte and diffusion of the electrolyte into the tape. In another embodiment, first and second insulating plates comprise a material having an affinity for the electrolyte. In another alternative, the insulating plates comprise a mixture of a material having an affinity for the electrolyte and polypropylene or polyethylene. Alternatively, the surfaces of the insulating plates are coated with the material or with a surfactant that reduces the surface tension of the electrolyte.