A prismatic lithium ion battery cell includes a packaging having a cover. A power assembly disposed within the packaging has a first (e.g., negative) side and a second (e.g., positive) side. A terminal pad is electrically coupled to the first side, while the cover is electrically coupled to the second side, of the power assembly. The cover includes a spiral disk feature disposed below the terminal pad and a reversal disk disposed below the spiral disk feature. The reversal disk is configured to deflect upwards to displace the spiral disk feature to contact the terminal pad in response to a pressure within the packaging being greater than a first predefined pressure threshold, forming an external short-circuit between the first and second sides of the power assembly. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow within the power assembly.

Provided is a secondary battery including an electrode assembly and an exterior body that houses the electrode assembly. In the secondary battery, the exterior body is provided with a flat plate-shaped terminal joined to the exterior body with an insulating member interposed therebetween, the flat plate-shaped terminal includes a first terminal member and a second terminal member, the first terminal member and the second terminal member are formed from materials that have different linear expansion coefficients from each other, and the first terminal member and the second terminal member are stacked on each other such that the first terminal member is stacked on the second terminal member, and the flat plate-shaped terminal is disposed on the insulating member such that the second terminal member faces the insulating member.

A battery pack has a movable busbar assembly and a secondary battery including the same. More particularly, a battery pack has a movable busbar assembly configured such that at least one of a first busbar frame located at the front surface of a pack case, a second busbar frame located at the rear surface of the pack case, a first busbar connected to the first busbar frame, and a second busbar connected to the second busbar frame is movable in a direction toward a side plate of the pack case, whereby it is possible to minimize short circuit between leads, and a secondary battery including the same.

Battery housing structure, includes: housing portion configured to house battery-unit including first-connector; second-connector configured to be connected to first-connector; and fixing tool configured to fix battery-unit to housing portion and including connection prevention portion configured to prevent connection between first-connector and second-connector when located at connection prevention position. Battery-unit includes concave portion facing inner wall of housing portion. Fixing tool is swing lever including projection at one end and connection prevention portion at other end, and configured to swing about shaft provided between one end and other end. Swing lever is configured to swing between: first position where projection is engaged with concave portion and battery-unit is fixed to housing portion; and second position where projection is not engaged with concave portion and connection prevention portion is located at connection prevention position, in accordance with amount of insertion of battery-unit into housing portion.

Battery housing structure, includes: housing portion configured to house battery-unit including first-connector; second-connector configured to be connected to first-connector; and fixing tool configured to fix battery-unit to housing portion and including connection prevention portion configured to prevent connection between first-connector and second-connector when located at connection prevention position. Battery-unit includes concave portion facing inner wall of housing portion. Fixing tool is swing lever including projection at one end and connection prevention portion at other end, and configured to swing about shaft provided between one end and other end. Swing lever is configured to swing between: first position where projection is engaged with concave portion and battery-unit is fixed to housing portion; and second position where projection is not engaged with concave portion and connection prevention portion is located at connection prevention position, in accordance with amount of insertion of battery-unit into housing portion.

A battery, including a housing enclosed to form a chamber and including a first side plate; a cell located in the chamber and provided with a first tab; a first adapter electrically connected with the first tab and disposed between the first side plate and the cell, and a projection of the first adapter on the first side plate does not overlap with a projection of the first tab on the first side plate. The embodiments can improve the battery performance such as energy density.

A battery, including a housing enclosed to form a chamber and including a first side plate; a cell located in the chamber and provided with a first tab; a first adapter electrically connected with the first tab and disposed between the first side plate and the cell, and a projection of the first adapter on the first side plate does not overlap with a projection of the first tab on the first side plate. The embodiments can improve the battery performance such as energy density.

Standoff assemblies are disclosed for use within traction battery packs that include cell-to-pack battery systems. One or more standoff assemblies may be arranged between a cell-to-pack battery system and an enclosure cover of the traction battery pack. The standoff assemblies are configured to maintain a spaced relationship between the enclosure cover and certain components (e.g., battery cells, bus bars, etc.) of the cell-to-pack battery system.

Standoff assemblies are disclosed for use within traction battery packs that include cell-to-pack battery systems. One or more standoff assemblies may be arranged between a cell-to-pack battery system and an enclosure cover of the traction battery pack. The standoff assemblies are configured to maintain a spaced relationship between the enclosure cover and certain components (e.g., battery cells, bus bars, etc.) of the cell-to-pack battery system.

A battery terminal cover includes: a base portion that is fixed to a recess of a battery and accommodates a battery terminal and a fuse unit; a first cover coupled to the base portion via a first hinge; a second cover coupled to the base portion via a second hinge; a first engagement portion provided between the base portion and the first cover and disposed close to a side wall of the recess to hold the first cover at a shielding position; a second engagement portion provided between the base portion and the second cover and disposed close to the side wall of the recess to hold the second cover at a shielding position; and a release operation portion provided only in the first engagement portion so as to protrude upward higher than the side wall of the recess.