A busbar module includes: a plurality of busbars that are fixed to a plurality of battery cells of a battery module including the plurality of battery cells; and a plate-like flexible circuit body that includes a plurality of connection conductors corresponding to the plurality of busbars, in which the circuit body includes a trunk portion extending in a first direction in which the plurality of battery cells are arranged, and a plurality of branch portions branching from the trunk portion and connected to the busbars, the circuit body includes a first circuit layer and a second circuit layer, and the branch portion has a thin portion composed of any one of the first circuit layer and the second circuit layer, and connects the trunk portion and the busbar in a state where the thin portion is flexurally deformed.

A battery module includes: a housing including a removable housing section; a plurality of battery cells accommodated within the housing; and a battery management arrangement. The battery management arrangement includes: a battery management module (BMM); a battery management housing including a bracket configured to retain the BMM; and an electronics arrangement. The battery management housing is in the housing and arranged between two of the battery cells.

A battery module includes a module case formed with a hollow structure; a cell stack disposed inside the module case and including secondary battery cells stacked in one direction; and a bus bar frame having a plurality of bus bars for electrically connecting the secondary battery cells and a sensing member for sensing voltage of the secondary battery cells, which are installed at predetermined locations thereof, the bus bar frame being installed around the cell stack and disposed to be inserted into the module case integrally with the cell stack. The bus bar frame includes a horizontal frame disposed in a length direction of the cell stack; and a pair of vertical frames coupled to both ends of the horizontal frame by hinges and disposed in a height direction at a front surface and a rear surface of the cell stack.

An assembly is provided that may include a battery, and an end cap mechanically and electrically coupled to the battery. The end cap may contain an electrical connector with at least one electric cable configured to supply current to at least one operating system electrically coupled to the battery. The end cap may also contain at least one electronic board coupled to the battery, and may be configured to detach from the battery to provide access to the electrical connector and the electronic board.

A portable tool for mobile use includes a housing, an electric motor located in the housing, an insert shaft on the tool, and a battery. The battery or a terminal for connecting to an external energy source is located in the insert shaft. A mechanically or hydraulically driven movable piston rod is for performing spreading, cutting, lifting, and/or pressing. An electronic device controls and/or regulates the electric motor and includes a printed circuit board with a potting compound on which electronic components are arranged. An electrically conductive on the insert shaft allows a releasable electric contact between the battery and the electronic device of the tool by inserting the battery into the insert shaft. The contact is divided into a first and second surface regions. The first surface region is covered with a nonconductive protective layer, and the second surface region is free of the protective layer.

A portable tool for mobile use includes a housing, an electric motor located in the housing, an insert shaft on the tool, and a battery. The battery or a terminal for connecting to an external energy source is located in the insert shaft. A mechanically or hydraulically driven movable piston rod is for performing spreading, cutting, lifting, and/or pressing. An electronic device controls and/or regulates the electric motor and includes a printed circuit board with a potting compound on which electronic components are arranged. An electrically conductive on the insert shaft allows a releasable electric contact between the battery and the electronic device of the tool by inserting the battery into the insert shaft. The contact is divided into a first and second surface regions. The first surface region is covered with a nonconductive protective layer, and the second surface region is free of the protective layer.

Disclosed is a battery pack including a secondary battery and a circuit board, in which the secondary battery includes a metal exterior portion, a first external terminal, and a second external terminal, the circuit board has a plurality of connection portions connected to the first external terminal or the second external terminal, at least one of the connection portions has a first opening, and the connection portion having the first opening is solder-bonded to the first external terminal or the second external terminal.

Disclosed is a battery pack including a secondary battery and a circuit board, in which the secondary battery includes a metal exterior portion, a first external terminal, and a second external terminal, the circuit board has a plurality of connection portions connected to the first external terminal or the second external terminal, at least one of the connection portions has a first opening, and the connection portion having the first opening is solder-bonded to the first external terminal or the second external terminal.

Battery systems according to embodiments of the present technology may include a battery characterized by a first surface, a second surface, and a third surface. A recessed ledge may be defined by the third surface about a midpoint of the battery. The first surface and the third surface may define a first terrace formed proximate a first lateral edge of the first surface of the battery adjacent the third surface of the battery, and a second terrace formed proximate a second lateral edge of the first surface of the battery adjacent the third surface of the battery and opposite the first lateral edge. The recessed ledge may extend along the first surface of the battery between the first terrace and the second terrace. The battery systems may also include a module seated on the first surface of the battery between the first terrace and the second terrace.

A position assurance apparatus, which is used for a connector assembly connected to a signal circuit are provided. The connector assembly comprises a first connector and a second connector, which are connected in pairs, wherein the first connector is connected to the signal circuit, and the second connector is inserted in the first connector. The position assurance apparatus comprises a first connecting portion and a second connecting portion, which are electrically connected to each other. The first connecting portion and the second connecting portion are configured to be electrically connected to the signal circuit by means of the first connector, so as to turn on the signal circuit when the first connector and the second connector are inserted in place.