Embodiments of the present application provide a battery cell, a battery, a power consumption apparatus, a method for producing a battery cell and an apparatus for producing a battery cell. The battery cell includes: a pressure relief mechanism, the pressure relief mechanism being disposed on at least one wall of the battery cell; and a protective film enclosing an outer surface of the at least one wall, the protective film being configured to provide insulation protection for the at least one wall; where the protective film includes a first portion at least covering the pressure relief mechanism. Through technical solutions of the embodiments of the present application, insulation performance of a battery cell could be improved; meanwhile, deformation of a pressure relief mechanism could be suppressed, creep of the pressure relief mechanism could be reduced, and the service life of the pressure relief mechanism could be increased.

A method for manufacturing an aluminum case of a battery includes: attaching an insulating layer to at least one surface of the plate body with an adhesive layer, wherein the adhesive layer is disposed between the insulating layer and the plate body; stamping, before the adhesive layer is cured, the plate body coated with the insulating layer to form the aluminum case in a predetermined shape, wherein during the stamping of the plate body, the insulating layer is movable relative to the plate body since the adhesive layer is not cured; and curing the adhesive layer after the stamping of the plate body is completed so that the insulating layer is fixed to the plate body, thereby avoiding detachment of the insulating layer and the plate body on the aluminum case.

The present disclosure provides a secondary battery in which an anti-corrosion layer of an organic/inorganic mixed layer is formed on a part of an inner surface of the battery case of a cylindrical secondary battery and the battery case of a prismatic secondary battery.

A secondary battery according to an embodiment includes an exterior material including an opening portion and including a bottom, a wound electrode group housed in the exterior material in order for an insertion direction to be perpendicular to a winding axis, and a lid attached to the opening portion of the exterior material and including at least a plate-like member, a positive electrode terminal, and a negative electrode terminal. When a minimum distance between the lid and the wound electrode group is A.sub.MIN, 0.5 mm<A.sub.MIN<2.0 mm is satisfied.

An aluminum battery packaging film includes a heat-sealing layer, wherein a material of the heat-sealing layer includes modified polyethylene terephthalate, polycarbonate, polyimide, or a combination thereof.

A pouch-type secondary battery includes: an electrode assembly in which a positive electrode, a separator, and a negative electrode are laminated; and a pouch configured to accommodate the electrode assembly, wherein the pouch includes: a surface protection layer made of a first polymer and formed at an outermost layer; a sealant layer made of a second polymer and formed at an innermost layer; a gas barrier layer made of a first metal and laminated between the surface protection layer and the sealant layer; and a metal foil layer made of a second metal, laminated between the surface protection layer and the sealant layer, and connected to the negative electrode of the electrode assembly.

Lithium electrochemical accumulator including at least one first package housing at least one electrochemical cell, said first package including at least: one internal thermally insulating layer suitable for confining, to the interior of a first package, the heat given off even in case of abnormal operation of a cell C and for protecting the cell(s) from heat generated outside the first package; one external layer superposed on the internal layer, the external layer being mechanically strong and fire resistant; and one cooling device including at least one heat pipe the enclosure of which passes through the first package(s) in a seal-tight manner and such that the heated zone of the heat pipe(s) is located inside the first package(s) and that the cooled zone of the heat pipe(s) is located outside the first package(s).

A rechargeable lithium battery includes: a positive electrode; a negative electrode; a separator between the positive electrode and the negative electrode; an electrolyte including vinylene carbonate; and a case accommodating the positive electrode, the negative electrode, the separator, and the electrolyte. At least in a portion of an interior of the case has a coating portion containing lithium borate particles.

A method for producing a battery packaging material, the method including a step of obtaining a laminate by laminating at least a base material layer, a barrier layer, a cured resin layer and a heat-sealable resin layer in this order, wherein at least one layer of the base material layer is formed of a polybutylene terephthalate film, and a value determined by dividing a piercing strength X (N) in the case of piercing the laminate from its base material layer side measured by a method in accordance with a provision of JIS Z1707:1997 by a thickness Y (μm) of the polybutylene terephthalate film is 1.02 N/μm or more.

A battery includes a casing that has an inner surface defining a chamber for an electrolyte, and a conductive lining being configured for electrical communication with a first battery terminal. There is also a permeable separator sheet disposed between the electrolyte and the conductive surface; a conductive rod having a first end configured for electrical communication with a second battery terminal, and, a second end configured for contacting the electrolyte. There is also an opening disposed in the casing; a sealing member configured for arrangement between at least a sealed position and an unsealed position to allow a potential difference to be produced between the first and second battery terminals. There is also at least one spacing element configured for spacing the electrolyte apart from the conductive lining within the chamber.