The present application relates to a laminating machine, including a first heating device, a first sheet material device, a second sheet material device, and a first combining device, the first combining device includes a heating mechanism and a rolling mechanism. A first sheet material, a first material strip, and a second sheet material are heated and pressed by the heating mechanism and the rolling mechanism, compared with a combination method of a PET film and an oven, it is not necessary to set arrange the PET film, cost of the PET film, arranging a PET film unwinding mechanism, and arranging a PET film winding mechanism is reduced, and occupied space is reduced, manufacturing cost is reduced, and there is no need to set up a longer oven, which improves combination efficiency and production efficiency, and further saves space and reduces device cost.

The present application relates to a laminating machine, including a first heating device, a first sheet material device, a second sheet material device, and a first combining device, the first combining device includes a heating mechanism and a rolling mechanism. A first sheet material, a first material strip, and a second sheet material are heated and pressed by the heating mechanism and the rolling mechanism, compared with a combination method of a PET film and an oven, it is not necessary to set arrange the PET film, cost of the PET film, arranging a PET film unwinding mechanism, and arranging a PET film winding mechanism is reduced, and occupied space is reduced, manufacturing cost is reduced, and there is no need to set up a longer oven, which improves combination efficiency and production efficiency, and further saves space and reduces device cost.

An aspect of the present invention is an energy storage device including: a negative electrode including a pair of flat portions facing each other and a curved folding portion connecting end portions on one side of the pair of flat portions to each other; and a sheet-like positive electrode disposed between the pair of flat portions of the negative electrode, in which the negative electrode includes a negative electrode substrate and a negative active material layer stacked on a surface of the negative electrode substrate directly or indirectly in a non-pressed or low-pressure pressed state, the negative active material layer contains a negative active material, the negative active material contains solid graphite particles, and the solid graphite particle has an aspect ratio of 1 or more and 5 or less.

An aspect of the present invention is an energy storage device including: a negative electrode including a pair of flat portions facing each other and a curved folding portion connecting end portions on one side of the pair of flat portions to each other; and a sheet-like positive electrode disposed between the pair of flat portions of the negative electrode, in which the negative electrode includes a negative electrode substrate and a negative active material layer stacked on a surface of the negative electrode substrate directly or indirectly in a non-pressed or low-pressure pressed state, the negative active material layer contains a negative active material, the negative active material contains solid graphite particles, and the solid graphite particle has an aspect ratio of 1 or more and 5 or less.

After a separator is brought into a tension-free state, a plurality of guide members are crossed in a horizontal direction between rows of the guide members to fold the separator or a superposed body zigzag. Positive electrode plates or negative electrode plates are inserted into the resulting furrows to produce a secondary battery.

After a separator is brought into a tension-free state, a plurality of guide members are crossed in a horizontal direction between rows of the guide members to fold the separator or a superposed body zigzag. Positive electrode plates or negative electrode plates are inserted into the resulting furrows to produce a secondary battery.

Disclosed is an electrode assembly in which a plurality of electrode plates are stacked so that a separator is interposed between a positive electrode plate and a negative electrode plate, wherein each of the electrode plates includes an electrode tab protruding outwards at one side thereof for coupling with an electrode lead, wherein at least one electrode plate of the positive electrode plate and the negative electrode plate extends relatively longer than the separator at one end of the electrode plate where the electrode tab is located to form the electrode plate extension protruding out of the separator, and wherein the electrode plate extensions of the same polarity are coupled to each other.

Disclosed is an electrode assembly in which a plurality of electrode plates are stacked so that a separator is interposed between a positive electrode plate and a negative electrode plate, wherein each of the electrode plates includes an electrode tab protruding outwards at one side thereof for coupling with an electrode lead, wherein at least one electrode plate of the positive electrode plate and the negative electrode plate extends relatively longer than the separator at one end of the electrode plate where the electrode tab is located to form the electrode plate extension protruding out of the separator, and wherein the electrode plate extensions of the same polarity are coupled to each other.

In manufacturing an electrode assembly, heat treated first separator and electrodes are passed through a pair of surface-patterned rollers under pressurization to prepare a preliminary electrode assembly including the first separator laminated with the electrodes. A second separator on which the preliminary electrode assemblies are disposed is passed through a pair of surface-patterned rollers under pressurization. The second separator is wound to be interposed between the preliminary electrode assemblies. An electrochemical device includes the electrode assembly.

A plasma generating apparatus for a secondary battery, including a roller part having a transfer roller configured to transfer a separator and a metal member built in the transfer roller, and a plasma generating part interacting with the metal member to generate plasma and thereby to form a mask that is patterned on a surface of the separator and has a bonding force.