Abstract: A battery cell includes a housing and a cover. The housing is provided with an opening and a chamber. The housing includes an opening part and a body part, where the opening part surrounds the opening and the body part surrounds the chamber. The cover is connected to the opening part and closes the opening. At least a partial region of the body part is recessed relative to the opening part to form a recessed zone, a thickness of the recessed zone being less than that of the opening part.

Abstract: A safety mechanism includes a connecting piece and an expanding layer. The connecting piece includes a first connecting portion, a fusing portion, and a second connecting portion that are connected in sequence. The expanding layer is disposed on a side of the first connecting portion or the second connecting portion in a first direction and located at a position of the first connecting portion or the second connecting portion close to the fusing portion. The first direction is a thickness direction of the connecting piece.

Abstract: A current collector component includes a current collector and an insulator. The current collector is used to connect the tab and electrode terminal to achieve electrical connection between the tab and electrode terminal. The current collector includes a first connecting part, a second connecting part, and a third connecting part. The first connecting part is used for connecting the tab, and the first connecting part has a fusing part. The second connecting part is configured for connecting the electrode terminal. The third connecting part connects the first connecting part and the second connecting part, and is bent relative to the first connecting part and the second connecting part. The insulator covers the fusing part and the third connecting part to insulate and isolate any one of the fusing part and the third connecting part from the tab.

Abstract: Disclosed are a polypropylene composite material capable of blasting at a low temperature, and a preparation method therefor and application thereof. The polypropylene composite material comprises the following components in parts by weight: 35-75 parts of special polypropylene A, 3-10 parts of special polypropylene B, 15-30 parts of a filler, 2-10 parts of a special toughening agent, 15-25 parts of a toughening agent, 0.1-0.3 part of a lubricant, 0.1-0.3 part of a photostabilizer, and 0.2-0.6 part of an antioxidant, wherein the special toughening agent comprises ultrahigh molecular weight polyethylene and a metallocene ethylene-propylene copolymer. The polypropylene composite material that is capable of blasting at a low temperature and has good rigidity is prepared by using the special polypropylene A, the special polypropylene B, and the special toughening agent in combination with the normal filler and the normal toughening agent, and the polypropylene composite material has a wide application prospect.

Abstract: The disclosure relates to a power battery and a battery module. The power battery includes: a case including an opening; a first cap assembly covering the opening and including a liquid injection hole, and an electrode assembly disposed in the case. An end of the electrode assembly extending out of a tab is disposed opposite to the first cap assembly.

Abstract: A method for calculating coupled lubrication and dynamics characteristic parameters of a flanged bearing includes three modules: a flanged bearing journal-trust thermal elastohydrodynamic coupled lubrication module, a flanged bearing dynamics characteristic parameter calculation module and a flanged bearing relative position feedback module. It considers the joint motion law of the journal part and the thrust part, and also considers the flow, pressure and thermal continuity conditions of the lubricant on the common boundary of the flange bearing, and finally forms the journal-thrust transient coupled lubrication analysis method of the flange bearing. On the basis, considerations are further given to the stiffness and the damping characteristics of the flanged bearing under the coupled effect, thereby achieving accurate simulation of the dynamic and the tribology performance of the flanged bearing, and solving the problem of lubrication failure of the flanged bearing.

Abstract: The present disclosure relates to a battery cell, a battery and an electric-powered device, and the battery cell includes: an electrode assembly; a shell adapted for receiving the electrode assembly; and a cap assembly adapted for closing an opening of the shell, wherein the shell includes a first wall and two second walls opposite each other, the first wall is adapted to connect the two second walls, the first wall has a wall thickness greater than that of the second wall, the first wall is provided with a pressure relief mechanism, and the pressure relief mechanism is adapted to be activated so as to release the pressure when a gas pressure inside the shell reaches a threshold.

Abstract: A battery cell includes a housing, an electrode assembly, an end cap, and a current collecting member. The housing is provided with an opening. The electrode assembly is accommodated inside the housing, and the electrode assembly is provided with a first tab at an end facing the opening. The end cap is configured to cover the opening. The current collecting member is electrically connected to the housing and welded to the first tab.

Abstract: This application relates to an adapter assembly, a battery cell, a battery, and an electrical device. The adapter assembly includes: a current collecting component, including a terminal connecting portion, a fuse portion, and a tab connecting portion, where the fuse portion is connected between the terminal connecting portion and the tab connecting portion; and an insulation protection component, wrapping the fuse portion. The insulation protection component is configured to keep a fixed relative position between the terminal connecting portion and the tab connecting portion when the fuse portion is blown. A first mating portion is formed on at least one surface of the fuse portion in a thickness direction. At least a part of one of the first mating portion or the insulation protection component protrudes along the thickness direction and is embedded inside the other of the first mating portion or the insulation protection component.

Abstract: A pressure relief apparatus used for a battery cell includes a pressure relief body and two pressure relief grooves. The pressure relief body has a first surface and a second surface disposed opposite in its thickness direction. The two pressure relief grooves are disposed opposite in the thickness direction and disposed on the first surface and the second surface separately, a weak portion is formed between the two pressure relief grooves, and the weak portion is configured to rupture when a pressure or temperature inside the battery cell reaches a threshold, so as to release the pressure inside the battery cell.

Abstract: A battery cell includes a shell comprising a wall portion, an electrode terminal arranged on the wall portion and having a filling hole penetrating in an axial direction of the electrode terminal and comprising a first hole section and a second hole section closer to the interior of the battery cell than the first hole section and having a smaller hole diameter than the first hole section, and a sealing member configured to seal the filling hole. The sealing member includes a limiting protrusion, and body fitting with the first hole section in a sealing manner and including first and second surfaces opposite each other in the axial direction. The first surface faces the interior of the battery cell. The second surface faces away from the interior of the battery cell. The limiting protrusion is formed on the first surface and fits with the second hole section.

Abstract: Provided are a battery cell, a battery, and an electrical apparatus. The battery cell includes a case, an electrode assembly, a first electrode terminal, and a cover plate. The case includes a cylinder and a cover body that are integrally formed, and the cylinder has an opening at the end facing away from the cover body. The electrode assembly is accommodated in the case and includes a first tab. The first electrode terminal is arranged on the cover body and is configured for electrical connection with the first tab. The cover plate is connected to the cylinder and covers the opening. The first electrode terminal is mounted to the cover body, which can increase a distance between a joint between the cylinder and the cover plate and the first electrode terminal.

Abstract: A battery cell includes a shell, an end cap, an electrode assembly, an insulating member and an insulating film, wherein the shell includes an accommodating cavity and includes an opening in at least one end thereof; the electrode assembly is accommodated in the accommodating cavity and includes two first surfaces and two second surfaces; the insulating member is disposed on one side of the end cap close to the electrode assembly; the insulating film is arranged at a periphery of the electrode assembly and the insulating member in an enclosing manner, and the insulating film includes two first coverage areas and two second coverage areas, the two first coverage areas respectively corresponding to the two first surfaces, the two second coverage areas respectively corresponding to the two second surfaces, and an end portion of the second coverage area close to the insulating member is provided with a first avoidance structure.

Abstract: This application provides a battery cell, which includes: a housing including a wall portion; an electrode terminal mounted on the wall portion in an insulating manner; an electrode assembly disposed in the housing, where the electrode assembly includes a body and a first tab, the first tab being formed at an end of the body closer to the wall portion; a current collecting member disposed between the electrode assembly and the wall portion, where the current collecting member is configured to connect the first tab to the electrode terminal; and a first insulating member, at least a portion of the first insulating member covering a side of the current collecting member facing the wall portion to insulate and isolate the current collecting member from the wall portion. The battery cell of this application has high safety.

Abstract: Embodiments of the present application provide a battery cell, a battery, a power consumption device, and a method and device for producing a battery cell. The battery cell includes: a housing having an opening; an electrode assembly accommodated in the housing; an end cover configured to cover the opening and provided with an electrode terminal; and a support, disposed in the housing, where the support and the electrode assembly are arranged in a first direction, the support and the end cover are arranged in a second direction, and the first direction is perpendicular to the second direction, the support abuts against the electrode assembly in the first direction so as to limit the electrode assembly.

Abstract: The present disclosure provides a rechargeable battery, including an electrode assembly and a connecting member. The electrode assembly includes an electrode assembly body and an electrode tab extending from an end surface of the electrode assembly body. The connecting member includes a guiding plate, a first connecting plate and a second connecting plate respectively connected to the guiding plate. The first connecting plate, the second connecting plate and the guiding plate extend along a width direction. The electrode tab is bent with respect to a longitudinal direction to form a bending part and the bending part of the electrode tab is connected to the first connecting plate. The width direction is to a thickness direction of the rechargeable battery.

Abstract: Biguanide compounds of formula where R1 comprises a cubanyl-substituted alkyl and R2 comprises a substituted or unsubstituted alkyl, and their use in the treatment of cancers and viral infections are described.