The present disclosure relates to composite battery covers including one or more integral vent members configured to release pressure. An example composite battery cover includes a continuous sheet having a first stiffness and one or more vent members defined in the continuous sheet. Each of the one or more vent members may include a first area having a second stiffness and/or a second area having a third stiffness. The second stiffness may be different from the first stiffness. The third stiffness may be different from the second stiffness and/or the first stiffness. The stiffness and strength of the continuous sheet and/or one or more vent members may be controlled by variable thicknesses and/or fiber loadings.

A peel off assembly for exposing a safety feature comprising an aversive agent for a battery includes a first adhesive layer adhered to a base layer. Optionally, a layer comprising a colorant is disposed over and coupled to the first adhesive layer. A layer comprising a water-soluble material and an aversive agent is disposed over and coupled to the first adhesive layer. A second adhesive layer is disposed over and coupled to the layer comprising a water-soluble material. A kill strip layer is disposed between the second adhesive layer and the base layer. Optionally, a label is disposed over and coupled to the second adhesive layer. The second adhesive layer is adapted and arranged to release from the layer comprising the water-soluble material, when a peel force is applied such that the second adhesive layer and the kill strip layer are removable from the layer comprising a water-soluble material when the peel force is applied to the second adhesive layer.

A rechargeable battery includes: a case receiving an electrode assembly and including an opening; a cap assembly including a cap plate combined to the case and covering the opening, and a terminal plate combined to the cap plate; and a housing member covering the cap plate on an external side of the terminal plate and combined to the case, the housing member including an undercut formed toward an external surface of the case.

An internal terminal is disposed inside a battery case and so as to be spaced apart from the battery case. An external terminal is disposed outside the battery case and spaced apart from the battery case, and the external terminal is connected to the internal terminal through a terminal mounting hole. An electrically insulating resin is disposed so as to fill a gap between the battery case and the internal terminal and a gap between the battery case and the external terminal, and the electrically insulating resin is joined to the battery case, to the internal terminal, and to the external terminal. At least one of the internal terminal and the external terminal includes a protruding portion protruding into the terminal mounting hole, and the internal terminal and the external terminal are joined to each other at a tip of the protruding portion.

An internal terminal is disposed inside a battery case and so as to be spaced apart from the battery case. An external terminal is disposed outside the battery case and spaced apart from the battery case, and the external terminal is connected to the internal terminal through a terminal mounting hole. An electrically insulating resin is disposed so as to fill a gap between the battery case and the internal terminal and a gap between the battery case and the external terminal, and the electrically insulating resin is joined to the battery case, to the internal terminal, and to the external terminal. At least one of the internal terminal and the external terminal includes a protruding portion protruding into the terminal mounting hole, and the internal terminal and the external terminal are joined to each other at a tip of the protruding portion.

A method of assembling a button cell battery. The method includes positioning a free end of a grommet over a free end of a top, and a free end of a can over a top panel of the grommet. The can includes a skirt having a vertical first section extending from a top panel of the can, and an outwardly tapered second section extending from the first section. An inner diameter of the skirt in the first section is substantially equal to an outer diameter of the top panel. The method also includes resizing a put-together arrangement defined following positioning the can over the grommet and positioning the grommet over the top from a first, expanded configuration to a second, constrained configuration, where an inner diameter of the skirt in the second section is substantially equal to the inner diameter of the skirt in the first section following resizing.

A composition for preparing a foamed polyurethane article is disclosed. The composition comprises (1) an isocyanate-reactive component and (2) an isocyanate component. The (1) isocyanate-reactive component comprises (A) an organopolysiloxane having an average of at least two carbinol functional groups per molecule and (B) a polyol. The (A) organopolysiloxane is present in an amount of from > 10 to < 99 wt.% based on the combined weight of the (A) organopolysiloxane and the (B) polyol. The (2) isocyanate component comprises (C) a polyisocyanate. The composition further comprises (D) a blowing agent, and (E) a catalyst. A foamed polyurethane article comprising the reaction product of the composition is also disclosed, along with use of the foamed polyurethane article.

A composition for preparing a foamed polyurethane article is disclosed. The composition comprises (1) an isocyanate-reactive component and (2) an isocyanate component. The (1) isocyanate-reactive component comprises (A) an organopolysiloxane having an average of at least two carbinol functional groups per molecule and (B) a polyol. The (A) organopolysiloxane is present in an amount of from > 10 to < 99 wt.% based on the combined weight of the (A) organopolysiloxane and the (B) polyol. The (2) isocyanate component comprises (C) a polyisocyanate. The composition further comprises (D) a blowing agent, and (E) a catalyst. A foamed polyurethane article comprising the reaction product of the composition is also disclosed, along with use of the foamed polyurethane article.

The present application provides a battery cover assembly and a cylindrical battery, the battery cover assembly includes an electrode post, a top cover and a sealing member. The electrode post includes a base plate portion, a boss portion on a side of the base plate portion, and a post portion on the boss portion. The top cover defines an assembly hole, the post portion extends through the assembly hole; the sealing member sleeves an outside of the post portion and abuts against the boss portion, the post portion and the top cover.

The present application provides a battery cover assembly and a cylindrical battery, the battery cover assembly includes an electrode post, a top cover and a sealing member. The electrode post includes a base plate portion, a boss portion on a side of the base plate portion, and a post portion on the boss portion. The top cover defines an assembly hole, the post portion extends through the assembly hole; the sealing member sleeves an outside of the post portion and abuts against the boss portion, the post portion and the top cover.