Abstract: The invention relates to a metal-ion electrochemical battery or accumulator, comprising: a housing (6) of longitudinal axis (X), a rupture zone (60) of a part of the housing, forming a safety vent for the degassing of the accumulator, at least one duct (10) comprising at least one rigid part (14) forming a stiffener, fixed or formed integrally with the part of the housing, around the safety vent, and a flexible part (15) arranged tightly with the housing or with the stiffener which is itself tight with respect to the housing, in the extension of the stiffener and around the latter, the flexible part being adapted to be deformed elastically on three orthogonal axes (X, Y, Z), so as to compensate for the plays on these axes when it is inserted and held tightly in a through opening (12) of a casing (11) of a module or battery pack.

Abstract: A barrel for an electrically-controllable variable focal length lens in a button-battery type housing includes a hollow isolating cylindrical tube with an inner diameter substantially equal to that of the lens housing, with one or bumps extending radially towards the inside of the tube and forming bearing surfaces for the lens periphery in a same radial plane. First metallizations extend on at least one of the bearing surfaces and therefrom into first channels formed in the internal wall of the tube towards at least one end of the tube, and second metallizations, each of which forms a contact area on the internal surface of the tube to bear against the lateral surface of the lens and extends towards at least one end of the cylinder.

Abstract: A barrel for an electrically-controllable variable focal length lens in a button-battery type housing includes a hollow isolating cylindrical tube with an inner diameter substantially equal to that of the lens housing, with one or bumps extending radially towards the inside of the tube and forming bearing surfaces for the lens periphery in a same radial plane. First metallizations extend on at least one of the bearing surfaces and therefrom into first channels formed in the internal wall of the tube towards at least one end of the tube, and second metallizations, each of which forms a contact area on the internal surface of the tube to bear against the lateral surface of the lens and extends towards at least one end of the cylinder.