Laminated battery cell and preparation device and method thereof

A preparation device of a laminated battery cell, comprising:

• a first electrode sheet preparation unit, configured to prepare a first electrode sheet;
• one or more first glue spraying mechanisms, arranged downstream of the first electrode sheet preparation unit, and configured to spray a normal temperature and pressure conductive adhesive onto a surface of the first electrode sheet;
• a separator unwinding mechanism, arranged downstream of the one or more first glue spraying mechanisms, and configured to convey a separator;
• a first composite mechanism, arranged downstream of the separator unwinding mechanism, and comprising two first pressure rollers arranged opposite to each other;
• wherein a first composite tape is prepared after the first electrode sheet and the separator pass through between the first pressure rollers, and a pressure applied by the first pressure rollers is P1, where 0.05T≤P1≤0.1T;
• a second electrode sheet preparation unit, arranged downstream of the first composite mechanism, and configured to prepare a second electrode sheet;
• one or more second glue spraying mechanisms, arranged downstream of the second electrode sheet preparation unit, and configured to spray the normal temperature and pressure conductive adhesive onto a surface of the second electrode sheet to be connected to the first composite tape;
• a second composite mechanism, arranged downstream of the one or more second glue spraying mechanisms, and comprising two second pressure rollers arranged opposite to each other;
• wherein a battery cell structure is formed after the first composite tape and the second electrode sheet pass through between the second pressure rollers, and a pressure applied by the second pressure rollers is P2, where 0.05T≤P2≤0.1T;
• and
• a folding mechanism, configured to fold the battery cell structure to prepare the laminated battery cell.

A preparation method of a laminated battery cell, comprising steps of:

• preparing one or more first electrode sheets and one or more second electrode sheets;
• spraying a normal temperature and pressure conductive adhesive on both sides of the one or more first electrode sheets, compositely connecting the one or more first electrode sheets to two separators, spraying the normal temperature and pressure conductive adhesive on a side surface of the one or more second electrode sheets, compositely connecting the one or more second electrode sheets to a side of the separators facing away from the one or more first electrode sheets, to prepare and obtain a battery cell structure;
• and
• folding the battery cell structure to prepare a laminated battery cell.