A prismatic lithium ion battery cell includes a packaging having a cover. The cover includes: a first spiral disk feature disposed below a first terminal pad; a second spiral disk feature disposed below a second terminal pad; a first reversal disk disposed below the first spiral disk feature; and a second reversal disk disposed below the second spiral disk feature. The first and second reversal disks are configured to deflect upwards to displace the first and second spiral disk features to contact the first and second terminal pads, respectively, in response to a pressure within the packaging being greater than a predefined pressure threshold and form an external short-circuit between the first and second terminal pads via the first and second spiral disk features. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow between the first and second terminal pads.

A prismatic lithium ion battery cell includes a packaging having a cover. The cover includes: a first spiral disk feature disposed below a first terminal pad; a second spiral disk feature disposed below a second terminal pad; a first reversal disk disposed below the first spiral disk feature; and a second reversal disk disposed below the second spiral disk feature. The first and second reversal disks are configured to deflect upwards to displace the first and second spiral disk features to contact the first and second terminal pads, respectively, in response to a pressure within the packaging being greater than a predefined pressure threshold and form an external short-circuit between the first and second terminal pads via the first and second spiral disk features. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow between the first and second terminal pads.

A battery includes a cell including an electrode, an electrode tab connected to the electrode, and a dummy tab protruding outwardly from the cell farther than the electrode tab. The dummy tab prevents a short circuit between first and second electrodes of the cell to prevent an accident, such as an overcurrent, overheating, and fire.

A battery includes a cell including an electrode, an electrode tab connected to the electrode, and a dummy tab protruding outwardly from the cell farther than the electrode tab. The dummy tab prevents a short circuit between first and second electrodes of the cell to prevent an accident, such as an overcurrent, overheating, and fire.

The embodiments of the application provide a battery and a device. The battery includes at least two battery units, wherein the battery unit is provided with a casing and two electrode connecting portions which are arranged on two sides of the casing and have opposite polarities, and the battery units include a first battery unit and a second battery unit which are connected in series; a conductive component arranged on one side of the casing and for being electrically connected to one of the two electrode connecting portions of the first battery unit and the casing of one of the first battery unit and the second battery unit; and a signal detection component arranged on the other side of the casing. The embodiments of the application can simplify the wiring of the signal detection circuit, improve reliability of the signal detection circuit, and then improve safety performance of the battery.

The application provides a separator assembly, a battery module, a battery pack, an apparatus, and a manufacturing method. The separator assembly includes: an insulating plate, a circuit board arranged on the insulating plate, busbars arranged on the insulating plate on at least one side of the circuit board, and connection sheets connected between the busbars and the circuit board. The connection sheets include an upper connection sheet and a lower connection sheet. The insulating plate includes a first surface and a second surface opposite to each other. The upper connection sheet is arranged on the first surface, and the insulating plate and the lower connection sheet are arranged to be at least partially overlapped in the height direction of the separator assembly, and at least a portion of the lower connection sheet is arranged on the second surface.

The application provides a separator assembly, a battery module, a battery pack, an apparatus, and a manufacturing method. The separator assembly includes: an insulating plate, a circuit board arranged on the insulating plate, busbars arranged on the insulating plate on at least one side of the circuit board, and connection sheets connected between the busbars and the circuit board. The connection sheets include an upper connection sheet and a lower connection sheet. The insulating plate includes a first surface and a second surface opposite to each other. The upper connection sheet is arranged on the first surface, and the insulating plate and the lower connection sheet are arranged to be at least partially overlapped in the height direction of the separator assembly, and at least a portion of the lower connection sheet is arranged on the second surface.

A terminal includes a substrate made of metal, an electrode portion that is formed of the same material as the substrate and functions as an electrode, and an insulating resin that is provided between the substrate and the electrode portion so as to surround the electrode portion and insulates the substrate and the electrode portion from each other.

A terminal includes a substrate made of metal, an electrode portion that is formed of the same material as the substrate and functions as an electrode, and an insulating resin that is provided between the substrate and the electrode portion so as to surround the electrode portion and insulates the substrate and the electrode portion from each other.

A cell fixing apparatus includes a first shell element, a second shell element, and a plurality of pressure-adding beams. The first shell element and the second shell element are relatively fixedly connected, the first shell element and the second shell element are disposed at intervals in a first direction, so that an accommodating cavity is provided between the first shell element and the second shell element, and the accommodating cavity is configured to accommodate the cell. The plurality of pressure-adding beams may be disposed on a surface of the first shell element that is away from the second shell element. The plurality of pressure-adding beams may include a first-type beam and a second-type beam. A size of the first-type beam in the first direction is greater than that of the second-type beam. The pressure-adding beams are used to limit deformation of the cell in the accommodating cavity.