A secondary battery includes: an electrode assembly having a long side and a short side; a retainer coupled to the short side of the electrode assembly; an insulating sheet surrounding a periphery of the electrode assembly and the retainer; and a case accommodating the electrode assembly, the retainer, and the insulating sheet.

A housing part for an electrical device, which is an electrical storage device, a sensor housing, a battery, a microbattery, or a capacitor, the housing part including: a feedthrough, the housing part or a base body which is a part of the housing part including the feedthrough, the feedthrough having at least one opening, the at least one opening having a wall with a reduced enclosure length EL.sub.red, the at least one opening configured for receiving a conductive material or a conductor in a glass material or a glass-ceramic material, the reduced enclosure length EL.sub.red being in a range of 0.05 mm to 0.6 mm, 0.1 mm to 0.5 mm, 0.1 mm to 0.4 mm, or 0.15 mm to 0.2 mm.

A battery assembly for an electric vehicle includes two spaced-apart longitudinal profiles extending in a length direction L, interconnected to a front and a rear transverse beam. At least three beam shaped battery modules are interconnected along their longitudinal sides via a plate-shaped interconnecting member, and extend in the length direction, to be attached to an inner surface of the front transverse beam via a bracket. Each battery module is provided with cooling channels extending in the length direction L and having an inlet situated between a transverse end face of the module and the inner surface of the front transverse beam. A water inlet duct extends from an external side the front transverse beam in a central area situated between the brackets, for connecting to a coolant inlet of the central battery module.

A battery cell includes an electrode assembly and a packaging bag for accommodating the electrode assembly and a first adhesive layer and a second adhesive layer. One end of the first adhesive layer and one end of the second adhesive layer are both adhered to the first surface of the electrode assembly, and the other end of the first adhesive layer and the other end of the second adhesive layer both extend to the bottom of the electrode assembly and are adhered to a second surface opposite the first surface, a surface on which a terminating end of the electrode assembly is defined as the first surface; and a third adhesive layer, one end of the third adhesive layer is adhered to the first adhesive layer, and the other end of the third adhesive layer is adhered to the second adhesive layer.

A battery cell includes an electrode assembly and a packaging bag for accommodating the electrode assembly and a first adhesive layer and a second adhesive layer. One end of the first adhesive layer and one end of the second adhesive layer are both adhered to the first surface of the electrode assembly, and the other end of the first adhesive layer and the other end of the second adhesive layer both extend to the bottom of the electrode assembly and are adhered to a second surface opposite the first surface, a surface on which a terminating end of the electrode assembly is defined as the first surface; and a third adhesive layer, one end of the third adhesive layer is adhered to the first adhesive layer, and the other end of the third adhesive layer is adhered to the second adhesive layer.

This application provides a battery cell, a method and system for manufacturing same, a battery, and an electrical device. The battery cell includes: an electrode assembly; a shell assembly, configured to accommodate the electrode assembly and including a first side plate and a second side plate, where the first side plate and the second side plate are located on two sides of the electrode assembly along a first direction respectively; a pressure relief mechanism, disposed on the first side plate; and a support member, disposed between the electrode assembly and the first side plate, and configured to support the electrode assembly. A duct is provided on the support member. The duct is configured to guide gas between the second side plate and the support member into the pressure relief mechanism, so that the pressure relief mechanism is actuated to release a pressure when the pressure reaches a threshold.

This application provides a battery cell, a method and system for manufacturing same, a battery, and an electrical device. The battery cell includes: an electrode assembly; a shell assembly, configured to accommodate the electrode assembly and including a first side plate and a second side plate, where the first side plate and the second side plate are located on two sides of the electrode assembly along a first direction respectively; a pressure relief mechanism, disposed on the first side plate; and a support member, disposed between the electrode assembly and the first side plate, and configured to support the electrode assembly. A duct is provided on the support member. The duct is configured to guide gas between the second side plate and the support member into the pressure relief mechanism, so that the pressure relief mechanism is actuated to release a pressure when the pressure reaches a threshold.

A main object of the present disclosure is to provide a battery in which wrinkles in its outer package is prevented from generating. The present disclosure achieves the object by providing a battery including: an internal element including at least a power generating element, and a laminate-type outer package in which the internal element is sealed; wherein the internal element includes a groove structure; and the battery includes a storing part where a part of the outer package is stored in the groove structure.

A main object of the present disclosure is to provide a battery in which wrinkles in its outer package is prevented from generating. The present disclosure achieves the object by providing a battery including: an internal element including at least a power generating element, and a laminate-type outer package in which the internal element is sealed; wherein the internal element includes a groove structure; and the battery includes a storing part where a part of the outer package is stored in the groove structure.

To suppress formation of wrinkles at any corner of a joint portion of an exterior body to suppress the breakage of the exterior body, a battery includes: an electrode body that is a quadrilateral in a plan view; and an exterior body housing the electrode body therein, wherein the exterior body has a joint portion along at least three sides thereof in a circumferential end thereof, a spacer is arranged between each corner of the electrode body and an inner surface of the exterior body, and the spacer has a projection extending toward the joint portion of the exterior body.