An electrode sheet rewinding apparatus for rewinding an electrode sheet includes a bobbin having a PET film wound therearound, a bobbin holder configured to hold the bobbin, a base plate located under the bobbin holder and configured to support the bobbin holder, a roller type touch roll configured to press an electrode sheet rewound around the bobbin above the bobbin to prevent meandering of the electrode sheet, a vertical plate located at one side of the base plate, the touch roll attached to the vertical plate, and an idle roller unit configured to form a tangential line to the electrode sheet rewound around the bobbin together with the touch roll. The idle roller unit includes an idle roller configured to maintain tension of the electrode sheet and to form a tangential line to the electrode sheet and two driving mechanisms configured to change the position of the idle roller.

A device for dispensing a roll of sheet stock material includes a first pair of rollers. The first pair of rollers is driven by an electric motor. The first pair of rollers is configured to receive expandable slit paper between the first pair of rollers. The first pair of rollers is configured to modify a force of friction applied to an outer surface of the expandable slit paper.

Provided is an automatic coiled material switching device, which comprises a machine table (8), a left unwinding device (81), a right unwinding device (82) and a rotatory cutting device (83); wherein the machine table is provided with a left auxiliary roller (84), a right auxiliary roller (85) and a plurality of fixed rollers; the rotary cutting device comprises a bearing seat (1), a bearing (11) arranged on the bearing seat, a rotating main body (2) arranged on the bearing, a rotating mechanism for driving the rotating main body to rotate on the bearing seat, a turning mechanism for driving the bearing seat to turn around, and a driving mechanism; the rotating main body comprises an upper part (21) and a lower part (22); a gap (23) for allowing a material to pass through is formed between the upper part and the lower part; and the rotating body is provided with a pressing mechanism for compressing the material and a cutting mechanism for cutting the material. The automatic coiled material switching device implements the automatic switching of material belts of the left unwinding device and the right unwinding device by arranging the rotating main body, rotating mechanism, the turning mechanism, the driving mechanism, the pressing mechanism and the cutting mechanism.

An electrode roll connection automation apparatus is configured for uniformly maintaining the width of electrode tabs in a process of connecting electrode sheets to each other and for automatically connecting the electrode sheets to each other. The electrode roll connection automation apparatus includes first and second supply units, a connection unit, and an electrode tab sensing unit. The first and the second supply units are configured to supply first and second electrode sheets, respectively, on which electrode tabs are formed. The connection unit is configured to connect the first electrode sheet and the second electrode sheet to each other. The electrode tab sensing unit is disposed between the first supply unit and the connection unit. The electrode tab sensing unit is configured to measure the distance between the electrode tabs.

The present technology relates to a method for connecting electrode sheets in a roll-to-roll process, and the method includes: arranging a flexible connection sheet of a predetermined length between a first electrode sheet and a second electrode sheet; connecting the first electrode sheet to the flexible connection sheet by attaching one side of the first electrode sheet to one side of the flexible connection sheet using a first tape; and connecting the second electrode sheet to the flexible connection sheet by attaching one side of the second electrode sheet to the other side of the flexible connection sheet using a second tape.

Further, the present technology relates to an electrode sheet manufactured by manufactured by the method of connecting electrode sheets.

An electrode stack manufacturing apparatus comprising a plate conveyance device (A) provided with a plurality of conveyor plates (20) made to move along a conveyance route while spaced apart from each other. The conveyor plates (20) are successively loaded with sheet-shaped electrodes (1). The conveyor plates (20) are provided with clamps (21, 22, 23, 24) clamping the sheet-shaped electrodes (1) carried on the conveyor plates (20) on the conveyor plates (20) and holding the sheet-shaped electrodes (1) at the placement positions on the conveyor plates (20) during conveyance.

The present application relates to a composite device, including a first electrode material strip unwinding mechanism configured to unwind the first electrode material strip; a crease mechanism disposed downstream of the first electrode material strip unwinding mechanism and configured to form a plurality of creases on the first electrode material strip; and a first composite mechanism disposed downstream of the crease mechanism and configured to combine a first diaphragm, a second diaphragm, and the first electrode material strip so as to stack the first diaphragm, the second diaphragm, and the first electrode material strip to form a first composite material strip. By arranging the composite device, during a process of folding the first composite material strip, it may be directly folded along the creases. The composite device uses belt-shaped pole sheets directly without cutting, which improves efficiency of subsequent lamination. The present application also relates to a laminating machine.

The present invention relates to an electrode connection apparatus including a transfer unit configured to transfer a start portion of a standby electrode roll in a state of gripping the start portion, a leading unit configured to move upwards in a state of gripping the start portion of the standby electrode roll transferred by the transfer unit, a first connection unit configured to fix the standby electrode roll transferred by the leading unit, a second connection unit configured to fix an end portion of a moving electrode roll, and a taping unit configured to connect the standby electrode roll and the moving electrode roll to each other, whereby it is possible to automatically connect the electrode rolls to each other during an electrode manufacturing process performed as a roll-to-roll process.

An electrode connecting device for connecting an end of a preceding sheet to an end of a succeeding sheet includes: an arrangement member provided with an arrangement part on which the end of the preceding sheet is located adjacent to or overlapping with the end of the succeeding sheet; and a guide member having a guide bar which is provided movable between a support position to support a side portion of the preceding sheet and a side portion of the succeeding sheet during connecting of the end of the preceding sheet to the end of the succeeding sheet and a retreat position not to interfere with movements of the preceding sheet and the succeeding sheet.

A sheet-shaped electrode conveyance device (A) for conveying the sheet-shaped electrodes (1) to the stacking station is covered by the sealing walls (50). The inside of the sealing walls (50) is divided along the conveyance route of the sheet-shaped electrode (1) by the partitions (57, 58, 59, and 60) into the inside space regions (Z1, Z2, Z3, Z4, and Z5). Dry air is supplied to the inside space regions (Z1, Z2, Z3, Z4, Z5). If there is an abnormal sheet-shaped electrode (1) inside any of the inside space regions (Z1, Z2, Z3, Z4, Z5), the conveyor plates (20) other than the conveyor plate (20) carrying the abnormal sheet-shaped electrode (1) are retracted to the inside space regions other than the inside space region where the abnormal sheet-shaped electrode (1) is present.