A multi-voltage charging terminal access port includes at least one housing, a first charging terminal within the housing and configured to receive a first charging voltage, a second charging terminal within the housing and configured to receive a second charging voltage that is different from the first charging voltage, a first movable cover plate mounted within the housing, the first movable cover plate including a first access hole and being movable between a first position in which the first access hole is laterally offset from the first charging terminal to obstruct access to the first charging terminal and a second position in which the first access hole is aligned with the first charging terminal to allow access to the first charging terminal.

An internal terminal is disposed inside a battery case and so as to be spaced apart from the battery case. An external terminal is disposed outside the battery case and spaced apart from the battery case, and the external terminal is connected to the internal terminal through a terminal mounting hole. An electrically insulating resin is disposed so as to fill a gap between the battery case and the internal terminal and a gap between the battery case and the external terminal, and the electrically insulating resin is joined to the battery case, to the internal terminal, and to the external terminal. At least one of the internal terminal and the external terminal includes a protruding portion protruding into the terminal mounting hole, and the internal terminal and the external terminal are joined to each other at a tip of the protruding portion.

An internal terminal is disposed inside a battery case and so as to be spaced apart from the battery case. An external terminal is disposed outside the battery case and spaced apart from the battery case, and the external terminal is connected to the internal terminal through a terminal mounting hole. An electrically insulating resin is disposed so as to fill a gap between the battery case and the internal terminal and a gap between the battery case and the external terminal, and the electrically insulating resin is joined to the battery case, to the internal terminal, and to the external terminal. At least one of the internal terminal and the external terminal includes a protruding portion protruding into the terminal mounting hole, and the internal terminal and the external terminal are joined to each other at a tip of the protruding portion.

A method for manufacturing a battery cell (1) and a battery cell (1) comprises providing a battery housing (3) and introducing electrodes (5) and an electrolyte (9) into the battery housing (3). At least partial regions (23) of a surface, in particular an outer surface, of the battery housing (3) are coated with a diffusion barrier layer (25) made of a polymer material (27) and then the polymer material (27) of the diffusion barrier layer (25) is oxidized at least on the surface to form an oxide layer (29). The polymer material (27) may be in particular silicone so that the oxide layer (29) consists of silicon dioxide. An oxide layer (29) thus generated increases a barrier effect of the diffusion barrier layer (25) considerably and may be generated using technically simple means, such as for example an atmospheric pressure plasma.

A secondary battery including a positive electrode terminal and a negative electrode terminal disposed apart from each other on an upper surface of a battery case, and a terminal structure including a terminal body part and a terminal extension part, where the terminal body part surrounds the positive electrode terminal or the negative electrode terminal such that the positive electrode terminal or the negative electrode terminal is not exposed and is coupled to the upper surface of the battery case and one or more surfaces connected to the upper surface, and the terminal extension part is electrically connected to the positive electrode terminal or the negative electrode terminal and is exposed at any one surface of the terminal body excluding an upper surface thereof.

A secondary battery including a positive electrode terminal and a negative electrode terminal disposed apart from each other on an upper surface of a battery case, and a terminal structure including a terminal body part and a terminal extension part, where the terminal body part surrounds the positive electrode terminal or the negative electrode terminal such that the positive electrode terminal or the negative electrode terminal is not exposed and is coupled to the upper surface of the battery case and one or more surfaces connected to the upper surface, and the terminal extension part is electrically connected to the positive electrode terminal or the negative electrode terminal and is exposed at any one surface of the terminal body excluding an upper surface thereof.

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.

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.