The stacked cell manufacturing method includes the steps of executing zigzag-folding of a band-like separator by the intermediary of a zigzag-folding mechanism, alternately feeding a positive-plate and a negative-plate onto the separator as folded back every time the separator is folded back by the zigzag-folding. A positive-plate transfer head and a negative-plate transfer head are set so as to alternately undergo a linearly reciprocating transfer in a horizontal direction at least on the table, the direction of a horizontal and reciprocating transfer made by the positive-plate transfer head and the negative-plate transfer head is set to coincide with a folding-back direction of the zigzag-folding of the separator, and a force caused by the horizontal and reciprocating transfer alternately made by each of these transfer heads is imparted to the separator guided onto the table, thereby executing the zigzag-folding while the separator is drawn onto the table.

According to one embodiment, a manufacturing device for a battery, includes, an electrolyte supply unit which introduces an electrolyte into a cell, a chamber which accommodates the battery cell, a first pressure adjustment unit configured to make a pressure in the battery cell lower than a pressure on the side of the electrolyte supply unit, and a second pressure adjustment unit configured to make a pressure outside the battery cell in the chamber lower than the pressure in the battery cell, thereby increasing the capacity of the battery cell.

A bus bar attachment device includes a bus bar placing part for placing a bus bar onto a pallet, and a pressing part for causing first and second adjacent surfaces in the bus bar placed by the bus bar supply part to press against first and second adjacent wall surfaces in a bus bar positioning part of the pallet. The bus bar is placed by the bus bar supply part in a position where the first and second surfaces face the first and second wall surfaces in the bus bar positioning part, and the first and second surfaces are pressed the pressing part against the first and second wall surfaces in the bus bar positioning part to set the position of the bus bar relative to a battery.

A secondary battery manufacturing process carrier having a carrier transporting track structure is provided. The secondary battery manufacturing process carrier includes: a carrier base; a carrier roller provided at a first side of the carrier base; a rolling member provided at a second side of the carrier base; and a track base on which the carrier base is movably disposed. The carrier base has a first carrier side plate and a second carrier side plate at left and right sides thereof, the first carrier side plate and the second carrier side plate include the carrier roller and the rolling member, respectively, and the carrier roller and the rolling member are configured to be rolled on the track base.

A system and method for the rapid exchange of batteries in an electric vehicle. The electric vehicle contains a removable battery housed in the vehicle's undercarriage. The electric vehicle moves through the exchange system either by propelling itself or by being propelled by the system. As the vehicle is propelled forward, the removable battery within the vehicle is unlocked from the vehicle and replaced with a charged battery. The charged battery forces the removable battery out of the rear of the vehicle as the vehicle moves forward through the exchange. The vehicle remains powered throughout the exchange process. Once the charged battery is aligned in position under the vehicle and connected to the vehicle through corresponding contacts, the charged battery is located into place in the vehicle's undercarriage and the vehicle is ready for additional driving.

A battery pressing device for pressing a battery cell, the battery cell including an external casing, an electrolyte, a battery element in which electrodes and a separator are arranged in layers in the external casing, electrode terminals extending out of the external casing from an end of the battery element, and an insulating member for preventing short-circuiting of the electrode terminals attached to the electrode terminals inside the external casing, the battery pressing device includes a pressing member configured to press the battery cell in a layering direction of the battery element over a region so as to avoid pressing the insulating member inside the external casing.

A stacking apparatus includes a first rotating table that is equipped with a plurality of stacking regions and intermittently rotates the plurality of stacking regions respectively to a plurality of work positions, a first turning unit; and a second turning unit. The first turning unit includes a first arm that turns between the first stacking position and a first pickup position where an anode sheet is picked up and a second arm that turns in concert with movement of the first arm between the first stacking position and a second pickup position where a separator is picked up. The second turning unit includes a third arm that picks up a cathode sheet and a fourth arm that turns in concert with movement of the third arm and picks up a separator.

A method of manufacturing a unit cell having a negative electrode, a separator, and a positive electrode are stacked and placed between guide rollers. One of the positive electrode and the negative electrode. The separator is coated with a binder, and the separator is dipped in a solvent to soften a cured binder before the separator is put between the guide rollers. An apparatus for manufacturing a unit cell includes a reservoir in which at least two or more transfer rollers that rotate while the separator passes therethrough are mounted, and a solvent is stored at a predetermined level; and a chamber into which the separator passing through a reservoir is put together with the positive electrode and the negative electrode. Guide rollers are disposed so that the negative electrode and the positive electrode move to both surfaces of the separator, respectively.

A device for producing a packaged electrode having an electrode sandwiched between a pair of separators includes: a conveyance unit configured to sequentially overlay the electrode and the pair of separators from a front end side in a conveying direction while conveying the electrode and the pair of separators; a joining unit configured to join lateral edges of the pair of separators together, the lateral edges being positioned in a direction intersecting the conveying direction; and a controller configured to control operations of the conveyance unit and the joining unit. The controller is configured to repeatedly perform joining a plurality of times from the front end side in the conveying direction, each of the joining being performed while moving the joining unit so that a speed of the joining unit relative to a conveyance speed of a workpiece approaches zero.

A cordless welding machine includes first and second batteries being connected in parallel, a ground clamp connected to the first and second batteries, and a first welding electrode connected to the first and second batteries. The batteries providing a current output of at least about 40 amps.