Abstract: A battery pack includes a battery cell and a casing configured to receive the battery cell. The casing has a vent configured to allow gas generated in the battery cell to be discharged therethrough, and a sound generator installed in the vent so as to block the vent hole. The sound generator is configured to allow the gas to pass therethrough, and generate a sound by the flow of the gas when the gas is discharged from the casing through the vent hole.

Abstract: A battery with many cavities that form tiny reaction zones having voids. During charging, lithium metal forms in each cavity on the anode current collector. The formation of lithium metal in each of the many thousands of small cavities that are isolated from each other prevents the buildup of significant quantities of lithium metal in one location. The combination of tiny reaction zones and voids allows lithium metal to form without stressing the structure of the battery cell.

Abstract: A battery pack includes: a plurality of secondary battery cells connected to each other in series and/or in parallel; and a housing case that includes a plurality of battery housing spaces for housing the plurality of secondary battery cells. A number of the plurality of battery housing spaces is larger than a number of the plurality of secondary battery cells. A heat absorber is disposed in the battery housing space where the secondary battery cell is not housed.

Abstract: An object of one embodiment of the present invention is to provide a secondary battery in which deterioration of charge-discharge cycle characteristics is suppressed, to suppress generation of defects caused by expansion and contraction of an active material in a negative electrode, or to prevent deterioration caused by deformation of a secondary battery. To prevent deterioration, a material that can be alloyed with lithium and fluidified easily is used for a negative electrode. To hold a negative electrode active material over a surface of a current collector, a covering layer that covers the negative electrode active material is provided. Furthermore, a portion where the current collector and the negative electrode active material are in contact with each other is alloyed. In other words, an alloy that is in contact with both the current collector and the negative electrode active material is provided in the negative electrode.

Abstract: A battery pack includes: a first secondary battery cell and a second secondary battery cell each having a cylindrical shape and connected in series and/or in parallel with each other; a housing case; and a longitudinal partition plate having a thermal insulation property, and disposed at an interface between the first secondary battery cell and the second secondary battery cell housed in the internal space of the housing case. The longitudinal partition plate constitutes a first thermal insulator that projects from a side facing the side surface of the cylindrical shape of the first secondary battery cell, and constitutes a second thermal insulator that projects from a side facing the side surface of the cylindrical shape of the second secondary battery cell.

Abstract: A vehicle traction battery assembly including a pair of battery cells and a busbar is provided. Each of the battery cells may include a terminal and one or more locating features. The busbar may span between the cells and define a pair of arms each having a member sized to at least partially interlock with the one or more locating features. The busbar may span between the cells such that the busbar covers at least a portion of upper surfaces defined by each of the cells. At least one of the terminal apertures may be spaced in between outer edges of the respective arms such that a first and second surface area provide space sufficient for weld spots.

Abstract: A method for evaluating an internal short, of the present invention, inserts ionic polymer-metal composites (IPMC) in a battery cell, and applies a voltage to an external conducting wire electrically connected to the IPMC, so as to induce an internal short by means of flexural deformation of the IPMC, thereby evaluating whether the internal short occurs. The method for evaluating an internal short, according to the present invention, inserts and positions, in a battery, the IPMC capable of operating even at room temperature and low voltages and adjusts the voltage, thereby having an advantage of enabling a short to occur at a desired position and area and for a desired period of time.

Abstract: A wound bare electric roll includes a cathode sheet, an anode sheet and a separator, the separator being arranged between the cathode sheet and the anode sheet. The cathode sheet has an end and an anti-puncture cushion arranged on a tail exposed zone at the end of the cathode sheet. The anti-puncture cushion corresponds to an outer surface of a corner of the anode sheet. A lithium ion battery has a laminated aluminum film, and a wound bare electric roll accommodated in the laminated aluminum film.

Abstract: Battery systems and associated methods are described herein. A representative battery system includes: a plurality of individual battery units that each include a battery cell enclosed in a housing with a sensor therein configured to sense a physical characteristic of the battery cell; and a controller configured to connect/disconnect each battery cell according to its physical status to/from a device/system monitoring the battery system, such as an overarching vehicle control system. A battery system may comprising an energy storage cell; a cell container surrounding the energy storage cell and comprising at least one power output terminal and a test port; an external housing defining an enclosure configured to encompass the cell container; a conduit attached to the test port of the cell container and accessible through the external housing; and a valve positioned within the conduit and controlling fluidic flow through the conduit.

Abstract: An additive for electrochemical energy storages is disclosed, wherein the additive contains at least one silicon- and alkaline earth metal-containing compound V1 which in contact with a fluorine-containing compound V2 in the energy storage forms at least one compound V3 selected from the group consisting of silicon- and fluorine-containing, lithium-free compounds V3a, alkaline earth metal- and fluorine-containing, lithium-free compounds V3b, silicon-, alkaline earth metal- and fluorine-containing, lithium-free compounds V3c and combinations thereof. Also disclosed is an electrochemical energy storage containing the additive.

Abstract: A battery module increases heat dissipation by causing electronic cooling to occur at a breakdown voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module includes a battery cell assembly having a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device in which a heat absorbing portion is located on surfaces of the battery cells which are located at both outsides among the battery cells in the battery cell assembly, which correspond to a side surface of the battery cell assembly; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, to electronically cool the battery module when the overcharge of the battery module occurs.

Abstract: A secondary battery has a battery body and a restraint. The battery body has a plurality of stacked power generation elements. The restraint restrains the battery body. The restraint has a first contact section (for applying a restraining force to an outermost layer surface (e.g., a negative electrode collector) of the battery body. The restraint is configured so that a stress occurring at a boundary of a non-contact region and a contact region of the first contact section is less than a breaking strength of the negative electrode collector, and the stress is based on the restraining force and on expansion and contraction of a negative electrode due to a change in volume of a negative electrode active material layer caused by charging and discharging.

Abstract: A battery module improves heat dissipation by causing electronic cooling to occur at a specific voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module including a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device mounted onto the lead junction part; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, and wherein the thermoelectric device is driven to electronically cool the lead junction part of the battery module when the overcharge of the battery module occurs.

Abstract: The purpose of the present invention is to provide: a method for producing a gas diffusion electrode base which enables the achievement of a gas diffusion electrode base that has a microporous layer with small surface roughness and is not susceptible to damaging an electrolyte membrane; and a gas diffusion electrode base that has a microporous layer with small surface roughness and is not susceptible to damaging an electrolyte membrane. For the purpose of achieving the above-described purpose, the present invention has the configuration described below. Namely, a specific gas diffusion electrode base which has a carbon sheet and a microporous layer, and wherein the carbon sheet is porous and the DBP oil absorption of a carbon powder contained in the microporous layer is 70-155 ml/100 g.

Abstract: TA negative electrode, a secondary battery including the same, and a method of preparing the negative electrode are provided. The negative electrode, which includes a current collector; a negative electrode active material layer disposed on the current collector; a first layer disposed on the negative electrode active material layer and including Li; and a second layer disposed on the first layer and including an inorganic material is provided. A loading amount of the first layer may satisfy Equation 1: 0.65×(x1?y1)<loading amount of the first layer<0.95×(x1?y1).

Abstract: A battery module increases heat dissipation by causing electronic cooling to occur at a breakdown voltage or higher, a battery pack including the battery module and a vehicle including the battery pack. The battery module includes a battery cell assembly having a plurality of battery cells and lead junction parts in which respective leads of the battery cells are joined to each other includes a thermoelectric device in which a heat absorbing portion is located on surfaces of the battery cells which are located at both outsides among the battery cells in the battery cell assembly, which correspond to a side surface of the battery cell assembly; and a constant voltage device configured to divert a current of the battery module to the thermoelectric device when an overcharge of the battery module occurs, to electronically cool the battery module when the overcharge of the battery module occurs.

Abstract: Some embodiments are directed to a battery. The battery can include a case having a hollow accommodation cavity formed therein. The case having a material that includes a blend comprising at least one of polysulfone, acrylonitrile butadiene styrene (ABS), Nylon, polyphenylene oxide (PPO), styrene-acrylonitrile (SAN), and polypropylene. The material of the case enables removal of thermal energy generated during operation of the battery.

Abstract: A rechargeable lithium battery includes a positive electrode including a positive current collector and a positive active mass layer on the positive current collector, the positive active mass layer including a positive active material; a negative electrode including a negative current collector and a negative active mass layer on the negative current collector, the negative active mass layer including a negative active material; and an electrolyte, wherein Equation 1 is satisfied: 0.3?A/B?2.5??Equation 1 wherein, in Equation 1, A satisfies Equation 2, and B satisfies Equation 3: 0.01?active mass density (g/cc) of the positive active mass layer/thickness (?m) of the positive electrode?0.1??Equation 2 0.01?active mass density (g/cc) of the negative active mass layer/thickness (?m) of the negative electrode?0.05??Equation 3.

Abstract: A battery and a manufacturing method thereof are provided. The battery module includes: a battery cell group, in which a plurality of battery cells is laminated; a pair of end plates, which is arranged on two end portions of the battery cell group; and restraint members, which are disposed over the pair of end plates and restrain the battery cell group between the pair of end plates. The restraint members are coupled by grappling structures to the pair of end plates on two end portions along the lamination direction the battery cells, and the pair of end plates clamps the battery cell group in a state that the battery cell group is compressed and pulling forces toward opposite directions act on the two end portions of the restraint members by a restoration force when the battery cell group restores from the compression state.

Abstract: The battery module has a structure in which a plurality of batteries are arranged at fixed positions by a battery holder, a lead plate is connected to a projecting electrode of each of the batteries, a potting resin is thermally coupled to the lead plate, the battery holder includes an outer peripheral cover having an electrode window to expose the projecting electrode, the lead plate has a connection recess that is locally formed in a planar part to let a protrusion face protrude toward the projecting electrode through the electrode window, and a sealing label is put into intimate contact with the planar part of the lead plate to close an opening of the connection recess. This structure prevents the potting resin from flowing into an outlet formed in the projecting electrode.