A battery cell includes an electrode assembly having a first electrode current collector having a sheet shape, a second electrode current collector having a sheet shape, and a separator located between the first electrode current collector and the second electrode current collector, the first electrode current collector, the second electrode current collector, and the separator being wound in a winding direction; a battery can accommodating the electrode assembly, the battery can having an open portion and a partially closed portion, the partially closed portion being electrically connected to the second electrode current collector; a current collection plate electrically connected to the first electrode current collector; a cell terminal connected to the current collection plate through a perforated hole of the partially closed portion of the battery can; and an insulator located between the battery can and the current collection plate. A method of manufacturing the battery cell is also provided.

A battery cell includes an electrode assembly having a first electrode current collector having a sheet shape, a second electrode current collector having a sheet shape, and a separator located between the first electrode current collector and the second electrode current collector, the first electrode current collector, the second electrode current collector, and the separator being wound in a winding direction; a battery can accommodating the electrode assembly, the battery can having an open portion and a partially closed portion, the partially closed portion being electrically connected to the second electrode current collector; a current collection plate electrically connected to the first electrode current collector; a cell terminal connected to the current collection plate through a perforated hole of the partially closed portion of the battery can; and an insulator located between the battery can and the current collection plate. A method of manufacturing the battery cell is also provided.

An electrode includes an electrode body and a protective member. The protective member covers a surface of the electrode body. The electrode body includes a current collector and an active material layer. The current collector has a first end face. The active material layer is provided on at least a portion of a surface of the current collector. The protective member includes an unadhered part and an adhered part. The unadhered part is disposed on a side closer to the first end face and is unadhered to the electrode body. The adhered part is disposed on a side farther from the first end face, is coupled to the unadhered part, and is adhered to the electrode body.

An electrode includes an electrode body and a protective member. The protective member covers a surface of the electrode body. The electrode body includes a current collector and an active material layer. The current collector has a first end face. The active material layer is provided on at least a portion of a surface of the current collector. The protective member includes an unadhered part and an adhered part. The unadhered part is disposed on a side closer to the first end face and is unadhered to the electrode body. The adhered part is disposed on a side farther from the first end face, is coupled to the unadhered part, and is adhered to the electrode body.

A composite electrode plate of increased robustness and with better electrical properties for incorporation in a battery cell includes a composite current collector, a positive active material layer, a negative active material layer, a first isolation layer, and a second isolation layer. The composite current collector is disposed between the positive active material layer and the negative active material layer. The first isolation layer connects to a surface of the positive active material layer away from the composite current collector. The second isolation layer connects to a surface of the negative active material layer away from the composite current collector.

A protruding portion of a current collecting foil is provided at one end in a width direction over an entire length in a longitudinal direction. A first end of a positive electrode plate, which is located on a side on which the protruding portion is provided, is located outward of a second end in the width direction, the second end being an end of a positive electrode active material layer in the width direction located adjacent to the protruding portion. An insulating tape is interposed between a positive electrode plate and the negative electrode plate. Regarding a size and a position of the insulating tape, the insulating tape is provided in a region including the second end and the first end in the width direction, and the insulating tape is provided in a region including longitudinal ends of the positive electrode plate in the longitudinal direction.

The present invention relates to an anode for a lithium secondary battery and a lithium secondary battery including the same. The anode includes a fiber composite layer on an active material layer, thus exhibiting superior elasticity and resilience. As consequence, the anode for a lithium secondary battery may have no change in electrode thickness, and high ionic conductivity can be manifested, ultimately realizing a prolonged battery lifespan and superior storage capacity.

Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.

An energy storage device includes: an electrode assembly; a case accommodating the electrode assembly; a lid plate structure including a lid plate of the case, a current collector electrically connected to a tab provided at the electrode assembly, and an insulating member disposed between the lid plate and the current collector; and a first spacer disposed between an end provided with the tab of the electrode assembly and the lid plate and having a locked portion locked to part of the lid structure.

A power storage module comprises an electrode assembly including a plurality of electrode plates stacked in a stacking direction, a resin sealing body for sealing an internal space formed between two adjacent electrode plates of the plurality of electrode plates, and a terminal member provided to the electrode assembly so as to protrude from the resin sealing body toward outside, wherein the terminal member is provided with one or more through holes penetrating along the stacking direction.