The present disclosure is directed to methods of securing battery tab structures to binderless, collectorless self-standing electrodes, comprising electrode active material and carbon nanotubes and no foil-based collector, and the resulting battery-tab secured electrodes. Such methods and the resulting battery tab-secured electrodes may facilitate the use of such composites in battery and power applications.

A secondary battery includes a can having an opening at one end, an electrode assembly accommodated in the can through the opening, a cap plate that seals the opening, and an insulation plate below the cap plate. The can includes: a first surface that is convex; a second surface that faces the first surface and is concave; a third surface that is curved and connected to the first surface and the second surface to form a bottom surface; a first connection portion that connects the first surface and the third surface and has a round form having a first radius of curvature; and a second connection portion that connects the second surface and the third surface and has a round form having a second radius of curvature. At least one of the first radius of curvature and the second radius of curvature varies along a length of the third surface.

A rechargeable battery pack includes a first rechargeable battery including a first electrode terminal and a first contact part that are on a first upper surface of the first rechargeable battery; a second rechargeable battery including a second electrode terminal and a second contact part that are on a second upper surface of the second rechargeable battery; a first coverlay connected to the first contact part; a second coverlay connected to the second electrode terminal; and a connection part connecting the first electrode terminal and the second contact part. The connection part includes a first part connected to the first electrode terminal and a second part connected to the second contact part. The first upper surface of the first rechargeable battery and the second upper surface of the second rechargeable battery face each other. The connection part is bent such that the first and second parts face each other.

A battery accommodating module is used for accommodating a battery. The battery accommodating module includes a battery case and a latch member. The battery case has an accommodating space and a side of the battery case has two pivot holes and at least one first restraining portion. The latch member has two pivot portions and at least one second restraining portion, wherein the pivot portions are pivotally connected to the pivot holes, such that the latch member can rotate with respect to the battery case between a lock position and an unlock position. When the latch member is located at the unlock position, the first restraining portion keeps the second restraining portion at a first side of the first restraining portion. When the latch member is located at the lock position, the first restraining portion keeps the second restraining portion at a second side of the first restraining portion.

A busbar (21) is provided for electrically connecting a temperature detecting member 40 to adjacent electrode terminals (12A, 12B) of unit cells (11). The busbar (21) is overlapped with the electrode terminals (12A, 12B) of the unit cells (11). The temperature detecting member (40) includes a plate-like heat transfer plate (42) that is overlapped in an area of the busbar (21) other than an area of the busbar (21) that is to be laser-welded to the electrode terminals (12A, 12B) and is attached to the busbar (21) by laser welding.

The invention relates to a connecting element of a battery module or of a contacting system for a battery module, realized to connect a cell connector, designed for electrically conductive connection of voltage taps of two battery cells of the battery module, or a voltage tap of a battery cell of the battery module, to at least one conductor of a signal line of a monitoring system of the battery module in an electrically conductive manner, the connecting element having a first connection region, which is realized for materially bonded connection to the cell connector or to the voltage tap, and the connecting element furthermore having a second connection region, which is realized to accommodate at least one conductor of the signal line of the monitoring system of the battery module in a force-fitting and/or form-fitting manner.

A rechargeable battery includes at least two electrode assemblies including electrodes on opposite surfaces of a separator, a case accommodating the electrode assemblies, a cap plate coupled to an opening of the case, first and second electrode terminals in the cap plate, and first and second lead tabs connected to respective first and second electrode terminals and to respective uncoated regions of the two electrode assemblies, wherein a first uncoated region of each of the two electrode assemblies is at a center of the case and is connected to the first lead tab, and wherein a second uncoated region of each of the two electrode assemblies is at an edge of the case and is connected to the second lead tab.

A battery pack includes a pack body that includes a battery cell and that has an external shape substantially symmetric with respect to the horizontal and vertical axes, viewed from a front face on which terminals are arranged, and a terminal unit on the front face. The terminal unit includes a positive terminal, a negative terminal, a control terminal, and a temperature detection terminal for outputting temperature data. The positive terminal and the negative terminal are arranged on one side with respect to a center line in the width direction of the pack body. The control terminal is arranged symmetrically to the temperature detection terminal with respect to the center line in the width direction of the pack body.

A rechargeable battery includes an electrode assembly having first and second electrodes at opposite sides of a separator and wound about an axis; a first terminal coupled to the first electrode through a first tab; a second terminal coupled to the second electrode through a second tab; a case accommodating the electrode assembly and including first and second openings at its opposite ends; a first gasket between the first terminal and the first opening, the first gasket sealing the first opening and allowing the first terminal to protrude outside of the case; and a second gasket between the second terminal and the second opening, the second gasket sealing the second opening and allowing the second terminal to protrude outside of the case. The case may further include a fixing portion at its inner side that protrudes toward the electrode assembly.

A battery pack includes at least one battery module, a housing accommodating the at least one battery module therein, a controller to control the at least one battery module, a partition positioned between the controller and the at least one battery module, and a connector at least partially passing through the partition, the connector electrically connecting the at least one battery module with the controller.