The vehicle battery case structure includes a top plate and a bottom plate, a side plate provided around the bottom plate, a partition plate provided in a lattice shape on the top surface of the bottom plate to form a plurality of regions for accommodating the battery pack with the side plate, a slit portion into which the side plate and the partition plate can be inserted, and a fixing portion to which the top plate is fixed, and a fastening member bonded to the top surface of the bottom plate at the intersection of the side plate and the partition plate and at the intersection of the partition plates in a state in which at least one of the side plate and the partition plate is inserted into the slit portion.

An energy storage device is equipped with a container having a container body and a lid body, which closes an opening of the container body. An elongated welded part which is a welded portion between the container body and the lid body, is formed on the container. The welded part has a first welded part and a second welded part arranged in a row in a lengthwise direction of the welded part, wherein a width of the second welded part in a widthwise direction of the welded part is set larger than a width of the first welded part in the widthwise direction. A gas release vent is disposed on the lid body, wherein the second welded part is disposed on a lateral side of the gas release vent, and a length of the second welded part in the lengthwise direction is set larger than a length of the gas release vent in the lengthwise direction.

An energy storage device is equipped with a container having a container body and a lid body, which closes an opening of the container body. An elongated welded part which is a welded portion between the container body and the lid body, is formed on the container. The welded part has a first welded part and a second welded part arranged in a row in a lengthwise direction of the welded part, wherein a width of the second welded part in a widthwise direction of the welded part is set larger than a width of the first welded part in the widthwise direction. A gas release vent is disposed on the lid body, wherein the second welded part is disposed on a lateral side of the gas release vent, and a length of the second welded part in the lengthwise direction is set larger than a length of the gas release vent in the lengthwise direction.

The present disclosure relates to a plug-in module connector or the electrically conductive connection of at least two battery modules, including a flexible busbar for the electrically conductive connection of respective poles of the battery modules, the busbar enabling tolerance compensation with respect to the poles in the transverse direction of the module connector; two retaining clamps for gripping the busbar and one of the respective poles of the battery modules, the retaining clamps enabling tolerance compensation with respect to the poles in the longitudinal direction and vertical direction of the module connector; an insulation housing in which the retaining clamps plugged onto the busbar can be received. Furthermore, the present disclosure also concerns a method for the electrically conductive connection of at least two battery modules by means of a plug-in module connector.

The present disclosure relates to a method for producing a tubular welding electrode comprising the steps of providing a strip of metal material having a length and first and second surfaces, wherein at least the first surface of the strip is at least substantially coated with nickel or a nickel alloy and then copper or a copper alloy, forming the strip into a “U” shape along the length, filling the “U” shape of the strip with a granular powder flux, and mechanically closing the “U” shape to form a sheath of nickel- and copper-coated metal material that substantially encases the granular powder flux, thus forming a tubular welding electrode. In certain embodiments, the metal material may be steel. In certain other embodiments, the metal material may be nickel or a nickel alloy, which may be at least substantially coated with copper or a copper alloy.

The present disclosure relates to a method for producing a tubular welding electrode comprising the steps of providing a strip of metal material having a length and first and second surfaces, wherein at least the first surface of the strip is at least substantially coated with nickel or a nickel alloy and then copper or a copper alloy, forming the strip into a “U” shape along the length, filling the “U” shape of the strip with a granular powder flux, and mechanically closing the “U” shape to form a sheath of nickel- and copper-coated metal material that substantially encases the granular powder flux, thus forming a tubular welding electrode. In certain embodiments, the metal material may be steel. In certain other embodiments, the metal material may be nickel or a nickel alloy, which may be at least substantially coated with copper or a copper alloy.

A dispensing unit for an adhesive or other viscous liquid includes one or more dispensing nozzles for delivery of the adhesive to a desired surface. The dispensing nozzles each include one or more dispensing ports that are in fluid communication with a nozzle body recess defined through a nozzle body of the dispensing nozzle. Adhesive that is supplied to the nozzle body recess may be thrown laterally from the dispensing nozzle via the dispensing ports. Each of the dispensing ports may be positioned between a pair of projections. The projections protect the dispensing port from breaking due to contact with the surface on which the adhesive is applied or contact with another exterior object.

An embodiment is directed to a multi-layer contact plate configured to establish electrical bonds to battery cells in a battery module. The multi-layer contact plate includes two or more primary conductive layers (e.g., Al, Cu, etc.), and a cell terminal connection layer (e.g., steel, Al, Cu, etc.) that is joined with, and sandwiched by, the two or more primary conductive layers. A portion of the cell terminal connection layer is configured to form a set of bonding connectors (e.g., bonding ribbons) to provide a direct electrical bond between the multi-layer contact plate and terminals (e.g., positive terminals, negative terminals, or a combination thereof) of at least one group of battery cells (e.g., a single group of battery cells, two groups of battery cells that are connected in series, etc.).

An electricity storage device according to one embodiment is an electricity storage device in which a plurality of bipolar electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators and includes a plurality of spacers arranged along peripheral edges of the collector plates between the respective collector plates adjacent to each other in a stacking direction and a resin frame covering outer peripheries of the plurality of spacers.

The present disclosure relates to a separator for a lithium ion secondary battery and a battery comprising the separator. The separator supplements the irreversible capacity of a negative electrode. The separator comprises composite particles (A), and the composite particles (A) include a core portion comprising lithium composite metal oxide particles and a shell portion comprising a carbonaceous material with which the core surface is coated at least partially; the composite particles (A) cause lithium deintercalation at 0.1 V to 2.5 V (vs. Li.sup.+/Li); the battery has a positive electrode potential of 3 V or more (vs. Li.sup.+/Li); and the battery has a driving voltage of 2.5 V to 4.5 V.