A manufacturing method and a manufacturing equipment of an electrode assembly, a battery cell, a battery, and an electrical device. The manufacturing method of the electrode assembly specifically includes: providing roll materials including: a cathode plate roll, a separator roll, and an anode plate roll, in which, the separator roll includes a separator body and an early warning coating arranged on the separator body; the separator body has a head end and a tail end at two opposite ends along a winding direction thereof; and the early warning coating is configured to be spaced from the tail end by a first preset length; stacking and winding a cathode plate of the cathode plate roll, the separator body of the separator roll, and an anode plate of the anode plate roll; and detecting, in the winding process, whether the early warning coating is arranged on the separator body.

A roll changing apparatus, a winding device, and a gluing device are disclosed in the present application. The roll changing apparatus includes an unwinding assembly including a first unwinding mechanism and a second unwinding mechanism; and a roll changing assembly including a first adsorption mechanism, a second adsorption mechanism, and a cutting mechanism. The cutting mechanism is used to cut off a first material strip between the second adsorption mechanism and a first adsorption area or a second material strip between the second adsorption mechanism and a second adsorption area.

An apparatus for connecting label tapes, the apparatus comprising a feed-through region through which the label tapes can be guided along a transport direction, an adhesive application device for applying adhesive material to an adhesive region of a first label end of a first label tape, wherein the adhesive application device comprises an application element for applying the adhesive material in the adhesive region and a supply element for feeding a transfer tape with adhesive material to the application element and for discharging the transfer tape from the application element, wherein the apparatus comprises a first drive element for moving the application element along an application direction and a second drive element for driving the supply element for feeding and discharging the transfer tape.

An apparatus for connecting label tapes, the apparatus comprising a feed-through area through which the label tapes can be passed along a transport direction, a clamping element for clamping an area of a first label tape, a cutting device upstream of the clamping element for cutting a first label end of the first label tape, an adhesive application device for applying adhesive material to an adhesive area of the first label end upstream of the clamping element, a connecting device for bringing a second label end of a second label tape to the first label end of the first label tape and for connecting the second label end to the first label end in the adhesive area.

The sheet connection device (1) includes: adhesive rollers (10, 10); a joining unit (20) and a cutting unit (30); and feed rollers (40, 40). The cutting unit (30) is capable of forming a connected end portion (SE2) by cutting the second bonding sheet (S2). The adhesive rollers (10, 10) separate the first bonding sheet (S1) into an adhesive sheet (SA) and a release sheet (SP) to form a separated portion (50) by feeding the first bonding sheet (S1) while holding a connecting end portion (SE1) of the first bonding sheet (S1). The feed rollers (40, 40) inserts the connected end portion (SE2) into the separated portion (50) by feeding the second bonding sheet (S2) toward the connecting end portion (SE1). The joining unit (20) connects the connecting end portion (SE1) and the connected end portion (SE2) to each other by adhesion or welding.

The line for producing tubes made of web-like material, includes a core winder, an unwinder including a rotary device on which there are arranged a first spindle and a second spindle; and a robot adapted to load reels of web-like material onto the unwinder and remove exhausted reels from the unwinder.

Proposed is a method for automatically replacing an electrode reel of a secondary battery which includes a reel holder mounting step, an adhesive providing step, a production reel outer diameter detection step, a production reel moving step, a standby reel supply step, and a material connection step of connecting an electrode material of the production reel of the bobbin buffer part and an electrode material of the standby reel to each other by using the adhesive, and cutting a remaining electrode material of the production reel.