Abstract: A secondary battery includes an outer package member, a battery device, an external terminal, and a coupling wiring line. The battery device is contained inside the outer package member, and includes a first electrode and a second electrode. The external terminal is attached to the outer package member and insulated from the outer package member. The coupling wiring line is coupled to each of the first electrode and the external terminal. A portion of the coupling wiring line is insulated from each of the outer package member and the second electrode, and is sandwiched by the outer package member and the battery device.

Abstract: A composite negative electrode material, a method for preparing the composite negative electrode material, a negative electrode plate of a lithium ion secondary battery containing the composite negative electrode material, and a lithium ion secondary battery containing a negative electrode active material of the lithium ion secondary battery, where the composite negative electrode material includes a carbon core and a carbon coating layer, where the carbon coating layer is a carbon layer that coats a surface of the carbon core, and both the carbon core and the carbon coating layer include a doping element, where the doping element is at least one of element N, P, B, S, O, F, Cl, or H.

Abstract: A cell management module for a power supply module including a plurality of power cells includes at least one cell-sensing circuit and a current measurement circuit connected to the at least one cell-sensing circuit. The at least one cell-sensing circuit includes a transformer having a first winding and a second winding inductively coupled to the first winding. A first sub-circuit of the cell-sensing circuit includes the first winding of the transformer and is operable to selectively pulse a first signal through the first winding. A second sub-circuit of the cell-sensing circuit includes the second winding of the transformer and one of the power cells of the power supply module. The current measurement circuit is connected to the first sub-circuit of the at least one cell-sensing circuit and infers a voltage of the power cell based on a measured current of the first signal.

Abstract: An apparatus for manufacturing a unit cell including a first and second roller is provided. The first roller is positioned on a first side of the first and second separators. The second roller is positioned on a second side of the first and second separators opposite the first side wherein the second roller is aligned with the first roller along an axis and defines an oval shape having a long axis and a short axis. The second roller is configured to contact the second separator and press the first and second separators against the first roller at portions of the first and second separators which are between adjacent electrodes. One of the lower roller or the upper roller is heated so as to thermally fuse the separators together.

Abstract: A pre-formed battery cell thermal barrier for a battery module includes a plurality of conductively coupled electrochemical cells and a pre-formed thermal barrier. The battery module can further include a cell holder configured to receive the plurality of conductively coupled electrochemical cells and the pre-formed thermal barrier. The pre-formed thermal barrier includes a cured potting material insertable into a cell-to-cell space in the battery module. The pre-formed thermal barrier includes one or more locking features configured to physically interlock with one or more corresponding locking features of the cell holder.

Abstract: A battery cell, a battery module comprising the battery cell, and a method for manufacturing the battery cell are provided. The battery cell includes a cell case having an accommodation space; an electrode assembly comprising a plurality of electrode plates and separators alternately stacked, and accommodated in the accommodation space; an electrode tab extending outward from each of the electrode plates; a gel electrolyte disposed in the accommodation space and surrounding the electrode tab formed at one side of the electrode assembly; and a liquid electrolyte disposed in the accommodation space and surrounding the other side of the electrode assembly, at which the electrode tab is not formed.

Abstract: A positive electrode active material includes at least one secondary particle including an agglomerate of primary macro particles. The average particle size of the primary macro particle is 2 ?m or more. A ratio of the average particle size of the primary macro particle to an average crystal size of the primary macro particle is 8 or more. An average particle size of the secondary particle is 3 to 10 ?m. The secondary particle includes a nickel-based lithium transition metal oxide. The primary macro particle does not crack in a rolling process under 9 tons. A method for preparing the positive electrode active material includes mixing a nickel-based transition metal oxide precursor having a tap density of 2.0 g/cc or less and a lithium precursor and performing primary sintering to form a primary sintered product and performing secondary sintering on the primary sintered product.

Abstract: A separator for a lithium secondary battery, a method for manufacturing the same, and a secondary battery including the same. The separator includes a porous coating layer including a top layer, an intermediate layer, and a bottom layer. An amount of a particle-type binder polymer present in the top layer is larger than an amount of the particle-type binder polymer present in the bottom layer. The porous coating layer also includes a dispersant having a carboxyl group and a glycol group.

Abstract: A battery management system includes a battery, monitoring devices and a controller. The monitoring devices are arranged in a housing accommodating the battery. The monitoring devices monitor the battery and acquire battery monitoring information that includes information indicating a state of the battery. The controller performs wireless communication with the monitoring devices and executes a predetermined process that controls voltage of the battery based on the battery monitoring information. The controller executes a wireless communication process with each of the monitoring devices individually. The wireless communication process includes a connection process, and a periodic communication process in which each of the monitoring devices periodically transmits the battery monitoring information to the controller after completion of the connection process.

Abstract: A battery includes: a positive electrode including a positive electrode substrate having a first surface and a second surface, a positive active material applied to the first surface of the positive electrode substrate, and a positive electrode tab attached to the first surface of the positive electrode substrate; a negative electrode including a negative electrode substrate having a first surface and a second surface, a negative active material applied to the first surface of the negative electrode substrate, and a negative electrode tab attached to the first surface of the negative electrode substrate; and a separator provided between the positive electrode and the negative electrode, wherein the first surface of the negative electrode substrate includes a first region to which the negative active material is not applied and which faces the positive electrode tab, the first surface of the negative electrode substrate includes a second region to which the negative active material is applied and which is adja

Abstract: This generally relates to one or more safety mechanisms of a rechargeable battery for light electric vehicles. The rechargeable battery may include a housing containing a battery management system and at least one battery cell, and a communication system communicatively coupled to the battery management system, where the communication system wirelessly communicates information received from the battery management system to a device external to the rechargeable battery. The rechargeable battery may include a housing formed of a first clamshell member and a second clamshell member. The rechargeable battery may include a first protrusion portion extending from an interior surface of the first clamshell member and a second protrusion portion extending from the interior surface of the second clamshell member toward the first protrusion portion such that the first and second protrusion portions physically contact one another when a force is applied to an external surface of the housing.

Abstract: A battery monitoring apparatus includes a first air quality sensor to generate a first detection signal indicating a concentration of a first material in an internal space of a battery assembly in which at least one battery cell is positioned, a second air quality sensor to generate a second detection signal indicating a concentration of a second material in the internal space, and a controller to execute a first monitoring mode for collecting the first detection signal in first time series in response to an operation start command. The controller executes a second monitoring mode for collecting the second detection signal in second time series in response to the concentration of the first material indicated by the first detection signal exceeding a first threshold during the execution of the first monitoring mode.

Abstract: A system is disclosed for providing inerting gas to a protected space, and also providing electrical power. The system includes an electrochemical cell comprising a cathode and an anode separated by a separator comprising a proton transfer medium. Inerting gas is produced at the cathode. A fuel source comprising methanol or formaldehyde or ethanol and a water source are each in controllable operative fluid communication with the anode. A controller is configured to alternatively operate the system in a first mode of operation where water is directed to the anode fluid flow path inlet and electric power is directed from a power source to the electrochemical cell, and in a second mode of operation in which the fuel is directed from the fuel source to the anode fluid flow path inlet and electric power is directed from the electrochemical cell to the power sink.

Abstract: A method for producing a cement material comprises steps of: reacting sulfur dioxide and water to form a first acid, the first acid comprising at least one sulfur-containing anion; reacting the first acid and a first cement precursor to form a second cement precursor; wherein the second cement precursor comprises the at least one sulfur-containing anion; and converting the second cement precursor to the cement material.

Abstract: A personal tactical system including a load-bearing garment, a pouch with one or more batteries enclosed in the pouch, at least one power distribution and data hub, and at least one camera. The camera is incorporated into or removably attachable to the load-bearing garment, the pouch is removably attachable to the load-bearing garment and the one or more batteries are operable to supply power to the at least one power distribution and data hub. The at least one power distribution and data hub is operable to supply power to at least one peripheral device. A plurality of personal tactical systems is operable to form an ad hoc network to share images and other information for determining object direction, location, and movement.

Abstract: Provided are a non-aqueous electrolyte solution for a lithium secondary battery comprising a lithium salt, an organic solvent, and a dialkylenenitrile-containing pyridine additive, and a lithium secondary battery comprising the same, where such non-aqueous electrolyte solution reduces the resistance and swelling phenomenon of the lithium secondary battery under high voltage.

Abstract: A battery cell includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery. A gas discharge unit can be inserted into the sealing portion and fused together with the sealing portion. The gas discharge unit includes a first layer and a second layer in a folded structure about a first border line. The gas discharge unit is open toward the inside of the battery case, and the first layer forms an outer surface of the gas discharge unit. The first layer and the sealing portion being in contact with each other.

Abstract: A battery pack for a vehicle includes a pack tray with an open upper surface, a plurality of battery cells stacked in a vertical direction on the pack tray, a plurality of sensing blocks, each including a cell bus-bar connected to an electrode of each of the battery cells, and provided on the pack tray, and a pressure plate mounted to press upper surfaces of the stacked battery cells in a downward direction, wherein the pack tray includes a plurality of support members fixing the plurality of sensing blocks, and wherein the pressure plate is fixed to the support members with the plurality of sensing blocks and is located above the plurality of sensing blocks.

Abstract: A battery management system for a battery pack having a plurality of battery modules includes a master battery management system disposed in the battery pack and configured to transmit a wake-up signal, and slave battery management systems each configured to periodically check for the wake-up signal at a reception period and to transmit state information of a corresponding one of the battery modules to the master battery management system if the wake-up signal is received. A first slave battery management system, among the slave battery management systems, is configured to transmit a request signal to the master battery management system at a start of the reception period of the first slave battery management system. Based on the request signal, a second slave battery management system is configured to synchronize the reception period of the second slave battery management system with the reception period of the first slave battery management system.

Abstract: A battery pack includes a first battery module; a first top cover provided on the first battery module; a second battery module mounted on top of the first battery module on the first top cover; a second top cover provided on the second battery module; an inter-top cover part as a cooling device interposed between the first top cover and the second top cover, and including an inter-top cover part upper member and an inter-top cover part lower member joined to each other by brazing to form a cooling water passage space inside, and an inter-top cover part port for entry/exit of cooling water to/from the cooling water passage space; a lower gasket provided at a contact area between the first top cover and the inter-top cover part; and an upper gasket provided at a contact area between the second top cover and the inter-top cover part.