Disclosed are a battery case including a container configured to accommodate an electrode assembly, wherein the container includes a bottom wall and a plurality of side walls, the bottom wall and the plurality of side walls are integrated to have an open side opposed to the bottom wall and to provide a space for accommodating the electrode assembly, the container includes a composite including a base polymer and an inorganic moisture absorbent, expanded graphite, and red phosphorus, each of which are dispersed in the base polymer, and the battery case has a water vapor transmittance rate at about 38 C. under relative humidity of about 100% according to ISO 15106 or ASTM F1249 of less than about 0.07 g/m.sup.2/day and flame retardancy of V-0 measured according to UL (Underwriter's Laboratories)-94, and a battery or battery module including an electrode assembly accommodated in the container of the battery case.

Battery cells are provided that can include: a housing defining a chamber having a fluid inlet and outlet; an anode at one side of the housing; a cathode at another side of the housing opposing and spaced apart from the anode a sufficient amount to allow for electrolyte between the anode and cathode; and the other side of the chamber defined by an ion permeable member. Methods for in situ battery electrode analysis are provided and these methods can include: providing a battery cell having an anode and a cathode; exposing the battery cell to an ion beam while the battery cell is operational to form secondary ions; and detecting the secondary ions to analyze the battery.

The disclosure provides electrochemical batteries, electrochemical battery housings and methods for assembling electrochemical batteries. The battery housing can include a container, a container lid assembly and an electrical conductor. The container can include a cavity that extends into the container from a cavity aperture. The lid assembly can seal the cavity, and can include an electrically conductive container lid and an electrically conductive flange. The container lid can cover the cavity aperture and can include a conductor aperture that extends through the container lid. The flange can cover the conductor aperture and can be electrically isolated from the container lid. The conductor can be connected to the flange and can extend through the conductor aperture into the cavity. The conductor can be electrically isolated from the container lid.

A new weld configuration is used to obtain a robust and consistent resistance weld between the tabs of an anode current collector and the casing of an electrochemical cell. This is done by adding a resistive transferable electrode tip between at least one of the welding electrodes, preferably the movable welding electrode, and the stacked parts that are being joined together. The purpose of the transferable electrode tip is to generate a sufficient amount of heat during the welding process so that the stacked parts are joined together without adding any product functionality. In one embodiment of the present invention, the transferrable electrode tip is a stainless-steel ball, the stacked anode current collector tabs are of nickel, and the cell casing is of stainless-steel.

A composite including a polymer matrix; an inorganic moisture absorber; a ceramic filler, graphite, or a combination thereof; and a tracking resistance polymer, wherein the tracking resistance polymer includes an average bond energy between an atom forming a main chain and another atom covalently bonded to the atom that forms the main chain of about 350 kJ/mol to about 500 kJ/mol; a carbonaceous residue yield after pyrolysis of less than or equal to about 5 weight percent, based on the amount of the tracking resistance polymer before pyrolysis; or a combination thereof.

A composite including a polymer matrix; an inorganic moisture absorber; a ceramic filler, graphite, or a combination thereof; and a tracking resistance polymer, wherein the tracking resistance polymer includes an average bond energy between an atom forming a main chain and another atom covalently bonded to the atom that forms the main chain of about 350 kJ/mol to about 500 kJ/mol; a carbonaceous residue yield after pyrolysis of less than or equal to about 5 weight percent, based on the amount of the tracking resistance polymer before pyrolysis; or a combination thereof.

This application relates to a secondary battery, a battery column, and an apparatus. The secondary battery includes a top cover plate, having an outer surface and an inner surface disposed opposite each other in a thickness direction of the top cover plate and an electrode lead-out hole extending along the thickness direction; a pole, disposed in the electrode lead-out hole, where the pole includes a first metal layer and a second metal layer, and the first metal layer and the second metal layer are stacked along a direction from the inner surface to the outer surface; an insulation member, disposed between the top cover plate and the pole; and a first bonding layer, disposed between the insulation member and the first metal layer, where the insulation member is hermetically connected to the first metal layer through the first bonding layer.

Battery cells are provided that can include: a housing defining a chamber having a fluid inlet and outlet; an anode at one side of the housing; a cathode at another side of the housing opposing and spaced apart from the anode a sufficient amount to allow for electrolyte between the anode and cathode; and the other side of the chamber defined by an ion permeable member. Methods for in situ battery electrode analysis are provided and these methods can include: providing a battery cell having an anode and a cathode; exposing the battery cell to an ion beam while the battery cell is operational to form secondary ions; and detecting the secondary ions to analyze the battery.

Provided are a plastic component, a battery, a battery module, and an electric device. The plastic component (10) satisfying at least one of condition 1): 1 mm?c?e?1 mm and 1 mm?c?f?2 mm, where c is a thickness of the body, f is a depth of the buffer recess (11), e is a depth of the connection piece recess (21); and condition 2): 1 mm?p?2 mm, p=(a?t*g?r*d)/n, where g is a length of the connection piece recess (21), t is a number of the connection piece recesses (21), r is a number of the buffer recesses (11), d is a length of the buffer recess (11), a is a length of the body, and p is a thickness of each of n side walls arranged in a length direction of the body.

Provided are a plastic component, a battery, a battery module, and an electric device. The plastic component (10) satisfying at least one of condition 1): 1 mm?c?e?1 mm and 1 mm?c?f?2 mm, where c is a thickness of the body, f is a depth of the buffer recess (11), e is a depth of the connection piece recess (21); and condition 2): 1 mm?p?2 mm, p=(a?t*g?r*d)/n, where g is a length of the connection piece recess (21), t is a number of the connection piece recesses (21), r is a number of the buffer recesses (11), d is a length of the buffer recess (11), a is a length of the body, and p is a thickness of each of n side walls arranged in a length direction of the body.