Abstract: A negative electrode for a lithium secondary battery and a lithium secondary battery including the same, where the negative electrode i) has a high energy density by containing a silicon-based material as a negative electrode active material, and ii) having an individual mixture layer including a silicon-based material having a relatively low electrical conductivity at the outermost part of the negative electrode mixture layer of a multilayer structure, so that the amount of current may be lowered in the event of an internal short circuit and the amount of heat generation may be reduced.

Abstract: Disclosed herein relates to a secondary battery, including: an electrode assembly; a battery case; a positive terminal and a negative terminal spaced apart on a top surface of the battery case; and at least one of a W-type terminal structure and a T-type terminal structure, wherein the W-type terminal structure is a structure capable of connecting two secondary batteries in a width direction, and the T-type terminal structure is a structure capable of connecting two secondary batteries in a thickness direction.

Abstract: Provided are secondary batteries. The secondary batteries may include a case having a plurality of surfaces including a first surface and a second surface; a positive terminal located on a surface of the case; a negative terminal located on the surface of the case and spaced apart from the positive terminal; and a terminal structure comprising a terminal body, an extension terminal, and a binding member, wherein: the terminal body includes a first face covering the positive terminal or the negative terminal and at least one second face extending from the first face; the extension terminal electrically connects to the positive terminal or the negative terminal and is located on the at least one second face of the terminal body; and the binding member is coupled to or integrally formed with the extension terminal.

Abstract: Disclosed herein relates to a secondary battery, including: a cell case including a cap plate, wherein the cell case has a hexahedral shape and accommodates an electrode assembly; a positive terminal and a negative terminal spaced apart from each other and disposed on a top surface of the cell case; a terminal structure comprising a terminal body coupled to the top surface of the cell case and one or more surfaces extending from the top surface while covering the positive or negative terminal, and an extension terminal electrically connected to the positive or negative terminal and exposed on any one surface of the terminal body except the top surface; and an extension wire electrically connecting the extension terminal to the positive or negative terminal and forming a joint part with the positive or negative terminal, the joint part being insulated from outside of the secondary battery.

Abstract: The disclosed technology relates to a secondary battery, including: an electrode assembly in which a plurality of unit cells are stacked and an electrode terminal. In one example, respective electrode tabs of the unit cells, which extend from the electrode assembly, are gathered together and electrically connected to an electrode terminal of the secondary battery, and the electrode tab of each unit cell includes an excess length part corresponding to the swelling of the electrode assembly.

Abstract: Disclosed herein relates to a secondary battery, including a case and a venting device that opens when a pressure inside the case exceeds a first predetermined value, wherein the venting device includes a rupture disk having a bursting part formed therein that bursts at the pressure of the first predetermined value, and a heat-absorbing porous member on at least one of an upstream or downstream side of the rupture disk.

Abstract: A secondary battery having a positive and negative terminal spaced apart from each other on a top surface of a battery case having a hexahedral shape is provided. The secondary battery includes a terminal structure including a terminal body coupled to the top surface of the battery case and one or more faces extending from the top surface of the battery case while enclosing the positive or negative terminal so as not to be exposed, and an extension terminal electrically connected to the positive or negative terminal and exposed to any one surface of the terminal body except its top surface, and having a connection terminal facing a thickness direction of the secondary battery on the extension terminal.

Abstract: A lithium secondary battery includes an electrode assembly comprising a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The lithium secondary battery includes an electrolyte composition comprising a non-aqueous organic solvent, a lithium salt, and an electrolyte additive. The positive electrode comprises a positive electrode active layer including a positive electrode active material and a polymer film stacked on a positive electrode current collector. The negative electrode comprises a negative electrode current collector, and a negative electrode active layer comprises a carbon material and a silicon material as a negative electrode active material on the negative electrode current collector. A ratio (DC/CC) of an initial discharge capacity (DC) and an initial charge capacity (CC) of the lithium secondary battery is 0.7 to 1.2.

Abstract: Disclosed herein relates to a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, and since the positive electrode contains a first positive electrode active material including an iron phosphate compound and a second positive electrode active material including a lithium composite metal oxide in a multi-layered positive electrode mixture layer, it is possible to display a large voltage deviation for each state of charge (SOC) of a secondary battery. Therefore, when applying a secondary battery, there is an advantage in that the state of charge (SOC) can be easily estimated and/or measured with high reliability.

Abstract: Disclosed herein relates to a lithium secondary battery, and the lithium secondary battery contains a ternary compound containing nickel (Ni), cobalt (Co), manganese (Mn), etc. as a positive electrode active material, and at the same time, contains a small amount of an iron phosphate compound and a silicon-based oxide in a positive electrode and a negative electrode, respectively, in the outermost part of a mixture layer adjacent to a separator, so not only has an excellent energy density of the battery, but also has a relatively low electrical conductivity of the positive electrode surface and the negative electrode surface, so that the amount of short circuit current during an internal short circuit of the secondary battery can be reduced, thereby having an advantage of improving the safety due to an internal short circuit of the secondary battery.

Abstract: A positive electrode for a lithium secondary battery includes a positive electrode current collector and a plurality of positive electrode mixture layers on the first electrode mixture layer. Each of the plurality of positive electrode mixture layers includes a first positive electrode active material comprising an iron phosphate compound, and a second positive electrode active material comprising a lithium composite metal oxide. A first positive electrode mixture layer of the n positive electrode mixture layers is in contact with the positive electrode current collector. A content ratio of the second positive active material in each of the n positive mixture layers decreases from the first positive electrode mixture layer to nth positive electrode mixture layer of the n positive electrode mixture layers.

Abstract: Disclosed herein relates to a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, and since the positive electrode contains a first positive electrode active material including an iron phosphate compound and a second positive electrode active material including a lithium composite metal oxide in a multi-layered positive electrode mixture layer, it is possible to display a large voltage deviation for each state of charge (SOC) of a secondary battery. Therefore, when applying a secondary battery, there is an advantage in that the state of charge (SOC) can be easily estimated and/or measured with high reliability.

Abstract: Disclosed herein relates to a positive electrode for a lithium secondary battery, wherein the positive electrode not only has an excellent energy density by containing a ternary compound containing nickel (Ni), cobalt (Co), manganese (Mn), etc. as a positive electrode active material, but also has an advantage of improving safety due to internal short circuit of a secondary battery by including an iron phosphate compound in the outermost part with respect to a positive electrode current collector.

Abstract: Disclosed is an apparatus and method for controlling power of a parallel multi pack system. The power control apparatus includes first to nth sensor units measuring operation characteristic values of first to nth battery packs connected in parallel; a power management unit controlling a power consumed in a load or a power provided by a charging device; and a multi pack management unit that: determines a pack resistance of each of the battery packs based on the operation characteristic value of each battery pack received from the sensor units, determines a minimum available power among available powers respectively corresponding to the pack resistances of the battery packs, determines a total power of the parallel multi pack system so the pack power of a battery pack having a lowest pack resistance becomes identical to the minimum available power, and transmit the determined total power to the power management unit.

Abstract: A system and method for efficient communication bus arbitration in a communication protocol are provided. The system and method for efficient communication bus arbitration are a system and method for slave communication bus arbitration in multi-drop communication, and provide efficient and fast communication speed by improving the packet structure in a manner in which a slave controller sequentially responds to a query of a master controller.

Abstract: Disclosed is an apparatus and method for controlling power of a parallel multi pack module. The apparatus determines a minimum available power of first to nth battery packs based on operation characteristic values of the first to nth battery packs, determines a total power of the parallel multi pack module from the minimum available power and a ratio of a summed current value to a maximum current value among the measured current values of the first to nth battery packs, and transmits the determined total power of the parallel multi pack module to the power management unit, and the power management unit controls the power consumed in a load or the power provided to the parallel multi pack module by a charging device so as not to exceed the total power of the parallel multi pack module.

Abstract: A battery includes an electrode assembly. The electrode assembly includes a first electrode including a first portion and a first tab extending from the first portion, a separator stacked on the first electrode, and a second electrode comprising a second portion and a second tab extending from the second portion stacked on the separator. The battery further includes a current collector assembly including a plate, a first current collector coupled to a proximal end of the plate including a first part and a second part opposite the first part, and a second current collector coupled to a distal end of the plate including a third part and a fourth part opposite the third part. The battery may further include a housing coupled to the plate. The first part and the second part of the first current collector may be configured to move in opposite directions.

Abstract: A secondary battery including a positive electrode terminal and a negative electrode terminal disposed apart from each other on an upper surface of a battery case, and a terminal structure including a terminal body part and a terminal extension part, where the terminal body part surrounds the positive electrode terminal or the negative electrode terminal such that the positive electrode terminal or the negative electrode terminal is not exposed and is coupled to the upper surface of the battery case and one or more surfaces connected to the upper surface, and the terminal extension part is electrically connected to the positive electrode terminal or the negative electrode terminal and is exposed at any one surface of the terminal body excluding an upper surface thereof.

Abstract: A system and method for efficient communication bus arbitration in a communication protocol are provided. The system and method for efficient communication bus arbitration are a system and method for slave communication bus arbitration in multi-drop communication, and provide efficient and fast communication speed by improving the packet structure in a manner in which a slave controller sequentially responds to a query of a master controller.

Abstract: Disclosed is an apparatus and method for controlling power of a parallel multi pack system. The power control apparatus includes first to nth sensor units measuring operation characteristic values of first to nth battery packs connected in parallel; a power management unit controlling a power consumed in a load or a power provided by a charging device; and a multi pack management unit that: determines a pack resistance of each of the battery packs based on the operation characteristic value of each battery pack received from the sensor units, determines a minimum available power among available powers respectively corresponding to the pack resistances of the battery packs, determines a total power of the parallel multi pack system so the pack power of a battery pack having a lowest pack resistance becomes identical to the minimum available power, and transmit the determined total power to the power management unit.