Provided is a top cover for power battery, including a top cover plate, a first electrode unit including a connecting plate, a deformable plate, an insulating piece and a current interrupt plate, and a second electrode unit, insulating piece, an assembling hole is formed in the top cover plate, the current interrupt plate is in the assembling hole and electrically connected with the top cover plate, the connecting plate is insulated from the top cover plate through the insulating piece, an accommodating chamber facing to the assembling hole is formed in the connecting plate, the deformable plate is attached to the connecting plate and covers the accommodating chamber, the second electrode unit is electrically insulated from the top cover plate, and the deformable plate configured to uncouple from the current interrupt plate when internal pressure of power battery goes beyond reference pressure.

A vent cap adaptor for coupling a vent cap to a battery cover includes a first portion and a second portion. The first portion is configured to engage the battery cover and the second portion is configured to receive and engage a bayonet-style vent cap. The first portion is annular and the second portion is annular.

A battery vent cap gang includes a plurality of vent caps. A primary member is operably coupled to each of the plurality of vent caps. A first translation member is operably coupled to a first one of the plurality of vent caps and spaced from the primary member in a first direction. A second translation member is operably coupled to a second one of the plurality of the vent caps and spaced from the primary member in a second direction. An actuator is operably coupled to the primary member, the first translation member, and the second translation member to cause substantially simultaneous rotational movement of the plurality of vent caps.

A film covered battery has a battery element equipped with a plurality of electrode plates laminated via separators, and an exterior film for hermetically sealing the battery element. A cover film is attached to a hollow present in predetermined regions set on a surface of the exterior film. The predetermined regions are regions obtained by removing overlap regions from projected regions obtained by projecting the electrode plates to the surface of the exterior film, the overlap regions being regions where the projected regions overlap with members interposed between the electrode plates at the outermost layers and the exterior film. It is possible to cover the hollow on the surface, without increasing the thickness of the film covered battery.

A rechargeable battery includes: an electrode assembly having a first electrode and a second electrode; an electrode terminal electrically connected to the electrode assembly; a case that receives the electrode assembly; a cap plate at an opening of the case, the cap plate closing and sealing the case and having a vent hole configured to discharge an internal pressure of the case; and a vent module including a vent portion, the vent portion including a buffer portion configured to buffer an impact that is transferred to the vent hole, and a fracture portion that closes and seals the vent hole, wherein the fracture portion is configured to be fractured by the internal pressure.

The present disclosure discloses an electric connector and a battery comprising the same. The electric connector includes a leading-out sheet, and a plurality of connecting sheets welded to the leading-out sheet, each connecting sheet comprising at least two welding portions; wherein the leading-out sheet and each connecting sheet are separate parts. The electric connector according to the present disclosure is convenient in welding, simple in structure, low in process cost, stable and reliable in structure and high in safety.

A battery lid lock structure comprises: a battery lid (10), a slide switch (20), a lock (30), and a main body (40). A longitudinally extended slide slot (11) is provided on the battery lid (10); the slide switch (20) is mounted on the slide slot (11) and is slidable back and forth between a first position and a second position, and comprises a lock head (21) located in the inner side of the battery lid (10); the lock head (21) and the lock (30) are connected together to drive the lock (30) to slide synchronously; the lock (30) comprises a bolt (31) extended and disposed in the same direction as the slide slot (11); a slot (41) correspondingly matching the bolt (31) is provided on the main body (40); when the slide switch (20) is at the first position, the bolt (31) and the slot (41) are engaged, when the slide switch (20) is at the second position, the bolt (31) and the slot (41) are separated. By disposing the slidable slide switch (20) on the battery lid (10) to drive the engagement or the separation of the lock (30) and the slot (41) on the main body (40), the present invention has fewer components and a structure being convenient to mount the slide switch (20) and the lock (30) and enables enough sufficient mating surface between the bolt (31) and the slot (41), thus guaranteeing the stability of the mating and reducing cost.

A battery pack includes a plurality of battery modules that includes a plurality of battery cells, a battery cell holder, a second-electrode assembly including a plurality of second-electrode bus bar plates, a first-electrode assembly, and a cover. The first-electrode assembly includes a plurality of first-electrode bus bar plates, a first-electrode terminal, a second-electrode terminal connected to one of the plurality of second-electrode bus bar plates, and an inter-electrode bus bar connecting the second-electrode bus bar plate and one of the first-electrode bus bar plate and the first-electrode terminal. The first-electrode assembly is in a first pattern or a second pattern. An arrangement of the first-electrode terminal and the second-electrode terminal in the battery module differs according to the pattern of the first-electrode assembly.

The battery is sealed by a sealing member including a safety valve for exhausting the gas generated in the battery to the outside of the battery when the pressure in the battery is increased. A part of the sealing member is formed of a member having a melting point lower than that of high-temperature gas generated in the abnormal time and having a ratio of an area of an opening of the battery case to an area of a gas exhaust hole is 3.0×10.sup.−5 or more and 9.1×10.sup.−3 or less.

A circuit interrupting device for use with an electrical power distribution system includes a housing containing a circuit interrupting device. A battery tube is positioned in the housing. A battery assembly is configured to be inserted into the battery tube. The battery assembly includes a assembly body having a first end and a second end. A battery is positioned in the assembly body. A cap assembly is connected to the assembly body and configured to connect the battery assembly to the battery tube. The cap assembly includes a torque-limiting device that prevents overtightening of the cap to the battery tube.