A battery (1), a battery module, a battery pack, and an electric vehicle are provided. The battery (1) includes a housing (10) and M battery core assemblies (20). The M battery core assemblies (20) are arranged in the housing (10), and M≥2. The M battery core assemblies (20) are stacked. The M battery core assemblies (20) are electrically connected. Each battery core (20) assembly includes multiple electrode core assemblies (21). The multiple electrode core assemblies (21) in each battery core assembly (20) are connected in series.

A battery (1), a battery module, a battery pack, and an electric vehicle are provided. The battery (1) includes a housing (10) and M battery core assemblies (20). The M battery core assemblies (20) are arranged in the housing (10), and M≥2. The M battery core assemblies (20) are stacked. The M battery core assemblies (20) are electrically connected. Each battery core (20) assembly includes multiple electrode core assemblies (21). The multiple electrode core assemblies (21) in each battery core assembly (20) are connected in series.

A rechargeable battery according to an exemplary embodiment of the present invention may include an electrode assembly which can charge and discharge a current, a lead tab which is electrically connected to the electrode assembly, and a pouch case including an accommodation unit in which the electrode assembly is accommodated, and of which at least a portion of an edge side is formed to be curved, and a bonding unit which is formed to be extended from the edge side of the accommodation unit and seals the accommodation unit, wherein the bonding unit may include an upper bonding unit from which the lead tab is drawn out and a side bonding unit which is bent in a thickness direction of the accommodation unit and enables a support space to be formed between the side bonding unit and the accommodation unit.

The present disclosure provides a secondary battery which comprises: a cap plate provided with a first electrode terminal; an electrode assembly comprising a main body and a first electrode tab; a first connecting piece connected between the first electrode tab and the first electrode terminal. The first connecting piece includes a first electrode terminal connecting portion, a first electrode tab connecting portion and a first fusing portion. The secondary battery further comprises an insulating piece arranged on the first connecting piece to prevent direct physical contact between the first electrode tab and the first electrode terminal connecting portion by covering at least an edge of the first electrode terminal connecting portion.

A battery pack including a plurality of battery cells arranged along a first direction; a holder, the holder including terminal holes exposing terminals of the battery cells, and pairs of first plates separated from each other between adjacent terminal holes and pairs of elastic pieces that are bent from the pairs of first plates in opposite directions along the first direction; and bus bars, each of the bus bars including coupling portions at opposite sides thereof and coupled to adjacent terminal holes, and a central bent portion connecting the coupling portions and extending around corresponding pairs of elastic pieces to surround the corresponding pairs of elastic pieces.

Apparatus, systems, and methods described herein relate to safety devices for electrochemical cells comprising an electrode tab electrically coupled to an electrode, the electrode including an electrode material disposed on a current collector. In some embodiments, a fuse can be operably coupled to or formed in the electrode tab. In some embodiments, the fuse can be formed by removing a portion of the electrode tab. In some embodiments, the fuse can include a thin strip of electrically resistive material configured to electrically couple multiple electrodes. In some embodiments, the current collector can include a metal-coated deformable mesh material such that the current collector is self-fusing. In some embodiments, the fuse can be configured to deform, break, melt, or otherwise discontinue electrical communication between the electrode and other components of the electrochemical cell in response to a high current condition, a high voltage condition, or a high temperature condition.

Embodiments of the invention provide a battery pack including a pack body and a plurality of terminals. The pack body has first and second main surfaces that are opposed to each other in a first axis direction, first and second end surfaces that are opposed to each other in a second axis direction orthogonal to the first axis direction, and first and second side surfaces that are opposed to each other in a third axis direction orthogonal to the first axis direction and the second axis direction. The plurality of terminals includes a positive terminal, a negative terminal, a temperature detection terminal, and a control terminal that are arranged on the first end surface along the third axis direction. The negative terminal is arranged between the temperature detection terminal and the control terminal and closer to the control terminal than the temperature detection terminal.

An object of the invention is to provide a lid for storage battery, an injection molding method of the lid, a storage battery with the lid, and a terminal section for storage battery, which can save trouble of inserting a nut into a cavity portion of a terminal, and can prevent falling of the nut at the time of connection of an external leading wire. In a lid for storage battery in which a terminal section for storage battery 8 made up of a terminal 4 having a cavity portion, a bushing 6, and a conductive portion 7 joining both is insert-molded in a lid made of synthetic resin, and a storage battery with the lid for storage battery, an anchor portion 4T is projected at a location excluding at least a central portion of a bottom portion 4F of the terminal 4, and a nut is inserted into the cavity portion of the terminal to be fixed. Moreover, in the terminal section for storage battery, the anchor portion 4T is projected at the location excluding at least the central portion of the bottom portion 4F of the terminal 4 (e.g., the U-shaped anchor portion 4T is projected with a U-shaped joining portion 4G interposed).

An electrical energy storage device includes prismatic energy storage cells arranged adjacent to one another such that interfaces of adjacent storage cells run at a distance from one another such that the interfaces of the adjacent storage cells form an intermediate space. A respective first layer is arranged between the interfaces of adjacent storage cells, the first layer abutting one of the two interfaces of the adjacent storage cells under pressure. Either the respective first layer also abuts the second of the two interfaces of the adjacent storage cells under pressure, or a second layer is arranged between the interfaces of adjacent storage cells, the second layer abutting the second of the two interfaces of the adjacent storage cells under pressure. A heat-conducting device is arranged in or between the first layer and the second layer is conducted out of the intermediate space between the adjacent storage cells.

An object is to reduce the overall height and outside dimensions of a secondary battery. Another object is to prevent the secondary battery from being damaged by nut tightening torque. A secondary battery includes an electrode body (15), an outer can (11), a sealing plate (12), a pair of electrode terminals (13), and a short-circuit mechanism (20). The pair of electrode terminals (13) includes a first electrode terminal (13A) and a second electrode terminal (13B). The short-circuit mechanism (20) includes a conductive reversible plate (22) secured to the sealing plate (12), and a reversible plate receiver (25) disposed opposite the reversible plate (22). The reversible plate receiver (25) includes a first output terminal (31), and the first output terminal (31) is electrically insulated from the sealing plate (12). The first output terminal is electrically connected to the first electrode terminal, and is spaced from the first electrode terminal.