Alkalin electrochemical cell

密封小直径圆柱形碱性电池的外壳(70)开口端的端盖组件(10)包括端子端盖(200)、在端盖下的绝缘密封盘(150)和穿入绝缘密封盘(150)的孔中的集流器(80)。至少绝缘密封盘(150)的一部分在电池外壳(70)内。端子端盖(200)具有一个圆周边(222)，优选地由弯曲肋(215)形成，肋锁在绝缘密封盘(150)的圆周边(155)内。端盖组件不需要其它金属盘固定在绝缘密封盘内。绝缘盘(150)包括不连续的裙部(157)，包括从绝缘盘的圆周边(155)向下延伸入电池内部的多条肋。绝缘盘(150)还有整体形成的可断裂薄膜(152)。 An end cap assembly is disclosed for sealing the open end of a cylindrical alkaline cell housing preferably having a diameter less than the diameter of AAA size cells. The end cap assembly is preferably intended for sealing AAAA (LR61) size cylindrical alkaline cells. The end cap assembly comprises a terminal end cap, an insulating sealing disk underlying said end cap, and an elongated current collector penetrating through an aperture in said insulating sealing disk. At least a portion of the insulating sealing disk lies within the cell housing to seal the open end thereof. The terminal end cap has a peripheral edge, preferably formed from a curved rib, which is locked within the peripheral edge of the insulating sealing disk. The end cap assembly does not require other metal disks held within the sealing and insulating disk. The insulating disk comprises a discontinuous skirt comprising a plurality of integral legs emanating downwardly into the cell interior from the peripheral edge of said insulating disk. The insulating sealing disk has an integrally formed rupturable membrane therein. The membrane ruptures when gas pressure within the cell exceeds a predetermined level.