Abstract: Disclosed are a connection assembly for a battery module and a battery module. The connection assembly for a battery module has a housing body, a cover plate and an openable and closable door, wherein the housing body is used for supporting a plurality of components; the cover plate covers the housing body and used for covering the plurality of components on the housing body; the cover plate is provided with a second through-hole, and the second through-hole positionally corresponds to at least one of the plurality of components; the openable and closable door is movably mounted on the cover plate, and is positionally changeable between an open position and a closed position; wherein in the open position, the openable and closable door opens the second through-hole to expose the at least one of the plurality of components; and in the closed position, the openable and closable door shields at least part of the second through-hole to cover the at least one of the plurality of components on the body.

Abstract: A terminal case configured to effectively estimate the life or degradation of a secondary battery as the secondary battery degrades includes a housing that can be coupled to the secondary battery, a plurality of normal mode terminals disposed on a first surface of the housing and a plurality of measurement mode terminals disposed on a second surface of the housing. The housing is configured to be coupled to the secondary battery with either the first surface or the second surface facing the secondary battery, such as by rotation of the housing about an axis passing through a center of two surfaces of the housing that are parallel to one another and perpendicular to both the first and second surfaces of the housing.

Abstract: A battery cell assembly includes a plurality of cylindrical cell blocks, each of the plurality of cylindrical cell blocks including a plurality of cylindrical cells, a block cover configured to cover an upper side of the plurality of cylindrical cell blocks and electrically connect the plurality of cylindrical cell blocks, a cooling plate located opposite to the block cover and disposed at a lower side of the plurality of cylindrical cell blocks and a heat transfer member disposed between the cooling plate and the plurality of cylindrical cell blocks and having a plurality of thermal interface materials corresponding to bottom portions of the plurality of cylindrical cells.

Abstract: A sealed battery, which is an exemplary embodiment, comprises a battery case including a bottomed cylindrical outer can and a sealing body that closes an opening of the outer can, a gasket disposed between the outer can and the sealing body, and an electrode body including an electrode and housed in the battery case. The sealing body includes a metal plate, and the metal plate has a thin portion formed in an annular shape, a valve portion having a convex shape inside the battery case, and an annular portion to which the electrode lead is connected. The gasket is provided with an elastically deformable portion that abuts against the inner surface of the valve portion and urges the valve portion to the outside of the battery case.

Abstract: A lithium secondary battery is disclosed which includes a cathode having a first cathode region and a second cathode region adjacent to the first cathode region, wherein the second cathode region is adjacent to an uncoated region of the cathode substrate; an anode, the anode having a first anode region and a second anode region adjacent to the first anode region, wherein the second anode region is adjacent to an uncoated region of the anode substrate, wherein a value C1 is a ratio of a direct current resistance value RA1 of the first anode region to a direct current resistance value RC1 of the first cathode region; wherein a value C2 is a ratio of a direct current resistance value RA2 of the second anode region to a direct current resistance value RC2 of the second cathode region; and wherein C2<C1.

Abstract: The present specification relates to a carrier-nanoparticle complex, a catalyst including the same, an electrochemical cell or a fuel cell including the catalyst, and a method for preparing the same.

Abstract: A battery pack includes at least one battery cell having first and second end portions spaced apart from each other in a length direction of the at least one battery cell, and an outer peripheral surface between the first and second end portions, a circuit board connected to the at least one battery cell, the circuit board to monitor the at least one battery cell, and a sensor extending from the circuit board toward the at least one battery cell, the sensor contacting the outer peripheral surface of the at least one battery cell, and the sensor having a casing having a first surface that is concave toward the outer peripheral surface of the at least one battery cell, a thermistor chip inside the casing, a lead wire extending from the thermistor chip outside the casing, and a filler inside the casing.

Abstract: An innovative fuel cell system with membrane electrode assemblies (MEAs) includes a polymer electrolyte membrane, a gas diffusion layer (GDL) made of porous metal foam, and a catalyst layer. A fuel cell has a metal foam layer that improves efficiency and lifetime of the conventional gas diffusion layer, which consists of both gas diffusion barrier (GDB) and microporous layer (MPL). This metal foam GDL enables consistent maintenance of the suitable structure and even distribution of pores during the operation. Due to the combination of mechanical and physical properties of metallic foam, the fuel cell is not deformed by external physical strain. Among many other processing methods of open-cell metal foams, ice-templating provides a cheap, easy processing route suitable for mass production. Furthermore, it provides well-aligned and long channel pores, which improve gas and water flow during the operation of the fuel cell.

Abstract: A battery pack includes a battery cell and a casing configured to receive the battery cell. The casing has a vent hole configured to allow gas generated in the battery cell to be discharged therethrough, and a sound generator installed in the vent hole 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 rechargeable energy storage system, includes a housing. A plurality of battery cells are disposed in the housing. A discharge vent passage is in communication with the housing, the discharge vent passage including a one-way valve and a nozzle. A chamber is in communication with the nozzle and including an air inlet passage with a one-way valve. An outlet pipe is connected to the chamber. According to an aspect, the air inlet passage of the thermal vent management system is arranged as a Venturi opening adjacent to the nozzle.

Abstract: A method for a battery system for a vehicle is provided. The battery system can include a plurality of battery modules and a heat transfer assembly. Each of the battery modules can include one or more cells. The battery modules are selectively electrically connectable to a terminal of the battery system in order to provide electrical power to the vehicle. The heat transfer assembly can selectively adjust thermal energy levels of one or more of the battery modules. The method can include determining a desired capacity of the battery system, determining a number of the battery modules to have thermal energy levels adjusted by the heat transfer assembly according to the desired capacity of the battery system, and operating the heat transfer assembly to adjust thermal energy levels of the determined number of battery modules.

Abstract: A vent assembly for a battery or a electrochemical cell may include a vent body configured to connect to a battery casing or a electrochemical cell body, a flame arrester and/or a pressure valve disposed in the vent body, a membrane disposed in the vent body between a vent opening of the battery or the electrochemical cell and the flame arrester and/or the pressure valve, and that is configured to shield the flame arrester and/or the pressure valve from electrolyte solution of the battery or the electrochemical cell, and a seal disposed between the vent body and the membrane. Also, a battery including a vent assembly.

Abstract: A power supply device includes battery cells each having a rectangular external shape, a separator disposed between the battery cells, a pair of end plates that are disposed on respective ends of a battery assembly in which the separator and the battery cells are stacked, and a bind bar that binds the pair of end plates. The separator has insulating rib parts that protrude from both surfaces of the separator, and the insulating rib parts of the separator stacked on each surface of the battery cell are stacked on each other on a bottom surface of the battery cell. The insulating rib parts are stacked on each other on the bottom surface of the battery cell by inserting an insertion rib provided in one of the stacked insulating rib parts into an insertion groove provided in the other of the stacked insulating rib parts.

Abstract: The present application relates to an electrochemical device and an electronic device including the same. The electrochemical device includes a cathode, a separator and an anode, wherein the cathode includes a cathode current collector; a first cathode active material layer including a first cathode active material; a second cathode active material layer including a second cathode active material, wherein the first cathode active material layer is disposed between the cathode current collector and the second cathode active material layer, and the first cathode active material layer is disposed on a first surface, facing the anode, of the cathode current collector; and an insulating layer, wherein the insulating layer is disposed on a second surface, that is not facing the anode, of the cathode current collector.

Abstract: A battery system includes a power bus and a set of battery packs. A battery pack is one or more batteries, a sensor board, and a power board. The power bus is used to electrically connect the set of battery packs. The sensor board receives a voltage difference between a battery pack not connected to the power bus and the power bus; determines whether the voltage difference indicates that a battery pack voltage is too high compared to a power bus voltage; in response to determining the voltage difference indicates that the battery pack voltage is too high compared to the power bus voltage, provides a drain indication to drain off the battery pack using a power draw mechanism until the voltage of the battery pack is within a threshold voltage difference of the power bus; and provides a connect indication to connect the disconnected battery pack to the power bus.

Abstract: The present disclosure relates to a horizontal composite electricity supply structure, which comprises a first insulation layer, a second insulation layer, two electrically conductive layers, and a plurality of electrochemical system element groups. The two electrically conductive layers are disposed on the first and second insulation layers, respectively. The electrochemical system element groups are disposed between the first insulation layer and the second insulation layer, and connected in series and/or in parallel via the electrically conductive layers. The electrochemical system element group is formed by several serially connected electrochemical system elements. Each electrochemical system element includes a package layer on the sidewall, so that their electrolyte systems do not circulate with one another. Thereby, the high voltage produced by connection will not influence any single electrochemical system element nor decompose their respective electrolyte systems.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention may include an electrode assembly which can charge and discharge a current, a lead tab which is electrically connected to the electrode assembly, and a pouch case including an accommodation unit in which the electrode assembly is accommodated, and of which at least a portion of an edge side is formed to be curved, and a bonding unit which is formed to be extended from the edge side of the accommodation unit and seals the accommodation unit, wherein the bonding unit may include an upper bonding unit from which the lead tab is drawn out and a side bonding unit which is bent in a thickness direction of the accommodation unit and enables a support space to be formed between the side bonding unit and the accommodation unit.

Abstract: In a metal negative electrode, a current collector includes a through-hole or a recess provided to extend from a front surface of a planar plate toward a back surface of the planar plate. A distance from a midpoint of a joining boundary to a point on a surface of the current collector is designated as a region dividing distance, the point defining a distance less than a maximum distance between the midpoint and a side or a surface of the current collector. In the current collector, a first region is a region defined by distances from the midpoint, the distances being a distance equal to the region dividing distance and distances greater than the region dividing distance, and, in the current collector, a second region is a region defined by distances from the midpoint that are less than the region dividing distance.

Abstract: Systems and methods for electrode lamination using overlapped irregular shaped active material may include a battery having a cathode, an electrolyte, and an anode, with the anode including an active material on a metal current collector. The active material may include a plurality of irregularly shaped pieces bonded to the metal current collector, and may include silicon, carbon, and a pyrolyzed polymer. The active material may include more than 50% silicon by weight. The plurality of irregularly shaped pieces may be roll press laminated to the metal current collector. Gaps may remain between some of the irregularly shaped pieces of active material. The gaps may absorb strain in the active material during lithiation of the anode. The metal current collector may include a copper or nickel foil. Portions of the metal current collector not covered by active material may be protected by an adhesive or inorganic layer.

Abstract: A horizontal composite electricity supply element group comprises a first insulation layer, a second insulation layer, a first patterned conductive layer, a second patterned conductive layer, and a plurality of electricity supply element groups. The first patterned conductive layer is disposed on the first insulation layer. The second patterned conductive layer is disposed on the second insulation layer. The plurality of electricity supply element groups are disposed between the first insulation layer and the second insulation layer, and connected in series and/or in parallel via the first patterned conductive layer and the second patterned conductive layer. The electricity supply element group is formed by several serially connected independent electricity supply elements whose electrolyte systems do not circulate with one another. Thereby, the high voltage produced by connection will not influence any single electricity supply element nor decompose their respective electrolyte systems.