A vacuum cleaner assembly includes a vacuum body, a suction wand removably connected to the vacuum body, and an accessory removably connected to the suction wand. A suction motor is disposed in the vacuum body and is configured to create flow through a suction path. An accessory motor is disposed in the accessory. A first power source is configured to supply power to the suction motor and to the accessory motor. A second power source is configured to supply power to the suction motor and to the accessory motor when the first power source falls below a predetermined charge level.

The disclosure relates to the technical field of batteries, and provides a battery, a battery apparatus and a battery pack. The battery includes a battery surface and a pole element. The battery surface is provided with a first recess, and the first recess is used to accommodate the pole element of the other battery. The pole element is arranged on the battery surface and is located outside a range where the first recess is located. By providing the first recess on the battery surface, the pole element of the other battery can be accommodated in the first recess when the batteries are grouped.

The disclosure relates to the technical field of batteries, and provides a battery, a battery apparatus and a battery pack. The battery includes a battery surface and a pole element. The battery surface is provided with a first recess, and the first recess is used to accommodate the pole element of the other battery. The pole element is arranged on the battery surface and is located outside a range where the first recess is located. By providing the first recess on the battery surface, the pole element of the other battery can be accommodated in the first recess when the batteries are grouped.

The disclosure discloses a battery and a battery apparatus. The battery includes two opposite first surfaces and four second surfaces disposed around the first surfaces, a pole assembly and a busbar. An area of the first surface is larger than an area of the second surface. The pole assembly is disposed on the first surface. The busbar is bent into a first segment and a second segment. The first segment is located at a side of the first surface where the pole assembly is disposed and is connected to the pole assembly. The second segment is parallel to or substantially parallel to a second surface and is used for electrically connecting the pole assembly of another battery.

The disclosure discloses a battery and a battery apparatus. The battery includes two opposite first surfaces and four second surfaces disposed around the first surfaces, a pole assembly and a busbar. An area of the first surface is larger than an area of the second surface. The pole assembly is disposed on the first surface. The busbar is bent into a first segment and a second segment. The first segment is located at a side of the first surface where the pole assembly is disposed and is connected to the pole assembly. The second segment is parallel to or substantially parallel to a second surface and is used for electrically connecting the pole assembly of another battery.

A cell contacting system for an electrochemical device is provided, which includes a plurality of cell groups having one or more electrochemical cells, each having a first and a second cell terminal. The first cell terminals follow each other along the longitudinal direction in a first cell terminal region of the electrochemical device and the second cell terminals follow each other along the longitudinal direction in a second cell terminal region of the electrochemical device. The cell contacting system includes at least one cell connector extending obliquely to the longitudinal direction and configured for electrically conductively connecting cell terminals of a first cell group in the first cell terminal region to cell terminals of a second cell group in the second cell terminal region, which cell contacting system reliably enables a relative movement between the cell terminals to be electrically connected to each other.

An improved battery module and methods of assembly are disclosed. A battery module may include carriers for holding battery cells via interference fit. The carriers may include a busbar with a stamped fusible link between each battery cell and the busbar. The battery module may be held together via interference fit, laser welding, and friction welding. A method of assembly may electrically and mechanically connect battery cells by laser welding stamped fusible links within a busbar. The method may further enclose the battery cells within a case and create a seal between the lid and case using friction welding.

A cell module assembly includes a top frame, a bottom frame, multiple lithium-ion battery cells, a top collector plate, a bottom collector plate, and a curable adhesive. The top frame includes protrusions that define first multiple pockets. The bottom frame includes protrusions that define second multiple pockets axially aligned with the first multiple pockets. Each of the first and the second multiple pockets have multiple windows. The battery cells are received within a pocket in each of the first and second multiple pockets. The top collector plate is coupled to the top frame and includes multiple apertures above the first multiple pockets. The bottom collector plate is coupled to the bottom frame. The top collector plate and the bottom collector plate are electrically connected to the battery cells. The curable adhesive is received within each window in the first multiple pockets and couples each battery cell to the top frame.

A maintenance method for a power storage device 1 in which a plurality of power storage units 9 in which a plurality of battery cells 11 are connected in series are connected in parallel. The maintenance method includes a comparison step for comparing log data for battery cells 11 that are at the same series connection positions in the power storage units 9 and a determination step for determining, on the basis of comparison results from the comparison step, the power storage unit 9 at which an abnormality has occurred.

A maintenance method for a power storage device 1 in which a plurality of power storage units 9 in which a plurality of battery cells 11 are connected in series are connected in parallel. The maintenance method includes a comparison step for comparing log data for battery cells 11 that are at the same series connection positions in the power storage units 9 and a determination step for determining, on the basis of comparison results from the comparison step, the power storage unit 9 at which an abnormality has occurred.