An electrical conductor for use in a battery of an electrically powered motor vehicle has a busbar enclosed by a first layer. A second layer is placed on the side of the first layer facing away from the electrical conductor.

An electrical conductor for use in a battery of an electrically powered motor vehicle has a busbar enclosed by a first layer. A second layer is placed on the side of the first layer facing away from the electrical conductor.

A busbar according to an embodiment includes an outer sheath enclosing a cavity and a metal foam contained in the cavity. A porosity formed within the metal foam is at least partially filled with a phase change material.

A busbar according to an embodiment includes an outer sheath enclosing a cavity and a metal foam contained in the cavity. A porosity formed within the metal foam is at least partially filled with a phase change material.

A power supply device having a battery block with a terminal surface on which terminals of a plurality of battery cells are arranged side by side, and a side plate with an elastic part, a holding part and a body part that extends along the side surfaces of the battery block. The elastic part faces the terminal surface and the holding part faces the bottom surface of the battery block. An insulation part is disposed between the elastic part and the battery block and has a positioning region and a pressing region that are disposed on one surface of the insulation part so as to face the elastic part. The positioning region is provided at an end of the insulation part located at the body part side, and extends to a position that is separated farther away from the elastic part than the pressing region.

A battery module includes a first battery cell and a second battery cell respectively having a positive electrode lead and a negative electrode lead and connected to each other in series; and a short circuit inducing member having one longitudinal side interposed between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell and the other longitudinal side located between the positive electrode lead of the first battery cell and the negative electrode lead of the second battery cell. When a potential difference between the negative electrode lead of the first battery cell and the positive electrode lead of the second battery cell increases over a reference value, the other longitudinal side of the short circuit inducing member makes flexural deformation toward the negative electrode lead of the second battery cell to come into contact with the negative electrode lead.

A cell-contacting device for a battery module includes a cell-connector support fitted onto a plurality of storage-cell modules of the battery module and a cell-connector sheet. The cell-connector support has a snap-fit arrangement. The cell-connector sheet is mounted on or in the cell-connector support by the snap-fit arrangement in a form-fitting manner.

A bus bar includes a plurality of fastening holes in which a plurality of electrodes of a single cell is fastened with a nut, and a plurality of projections formed between the fastening holes and projecting in a direction away from the single cell. A case includes a bus bar hosing portion in which the bus bar is housed, and a support portion disposed in the projection of the bus bar housed in the bus bar housing portion and abutting against a back surface of the projection to support the bus bar. The support portion includes a base portion protruding in an arrangement direction of the fastening holes. At least a part of both side surfaces of the base portion overlaps with an inner side surface of the projection as viewed from a direction perpendicular to a fastening direction in which the bus bar is fastened to the electrode.

A battery module that includes a stack of battery cells, where each battery cell has a terminal, and the terminal has a first alloy of a metal. The battery module has a bus bar that includes a body having a second alloy of the metal, nickel plating on at least a portion of the body, and an indentation disposed on the body, where a thickness of the nickel plating is between 0.2% and 20% of an overall thickness of the body, and a weld physically and electrically coupling the respective terminal to the bus bar. The indentation has a depth between 10% and 90% of the overall thickness, an area of the indentation is between 5% and 20% of an overall area of the body, and the nickel plating enables the weld to be stronger than a weld between the first and second alloys.

A bus bar assembly installed in a frame for fixing a plurality of stacked battery cells is provided. The bus bar assembly may include: a bus bar fixed to the frame; a flexible printed circuit board electrically connected to the bus bar and configured to sense the plurality of battery cells; and a connection terminal having a protrusion formed on one surface of the connection terminal, is the protrusion being configured to pass through the flexible printed circuit board so as to be electrically connected to the flexible printed circuit board, and the connection terminal configured to be electrically connected to the bus bar through the opposite surface of the one surface, the opposite surface being bonded to the bus bar.