Layer-built tab, electrode plate, battery core, and battery using same

An electrode plate, comprising:

• a current collector;
• an active material layer;
• and
• a layer-built tab,
• wherein the layer-built tab comprises:
• a plurality of metal pieces, and
• adhesives arranged between adjacent metal pieces,
• wherein the plurality of metal pieces are stacked, and adhered by the adhesives;
• a through hole is provided on each alternate metal piece in the plurality of metal pieces;
• the through holes are filled with the adhesives, and the adhesives between and through the alternate metal pieces are connected to form a single body;
• and
• the layer-built tab is positioned on the current collector;
• wherein the plurality of metal pieces comprises first metal pieces and second metal pieces, the first metal pieces and the second metal pieces have same polarity;
• the first metal pieces are stacked in a stacking direction;
• each second metal piece is partially stacked with the first metal pieces in the stacking direction;
• the second metal pieces and the first metal pieces are spaced apart from each other;
• wherein a minimum distance between the first metal pieces and the second metal pieces in the stacking direction is greater than a minimum distance between adjacent first metal pieces in the stacking direction.

A battery core, comprising:

• a first electrode plate;
• a second electrode plate;
• and
• an isolation film;
• wherein at least one of the first electrode plate and the second electrode plate comprises a layer-built tab,
• wherein the layer-built tab comprises:
• a plurality of metal pieces;
• and
• adhesives arranged between adjacent metal pieces,
• wherein the plurality of metal pieces are stacked, and adhered by the adhesives;
• a through hole is provided on each alternate metal piece in the plurality of metal pieces;
• and
• the through holes are filled with the adhesives, and the adhesives between and through the alternate metal pieces are connected to form a single body;
• wherein the plurality of metal pieces comprises first metal pieces and second metal pieces, the first metal pieces and the second metal pieces have same polarity;
• the first metal pieces are stacked in a stacking direction;
• each second metal piece is partially stacked with the first metal pieces in the stacking direction;
• the second metal pieces and the first metal pieces are spaced apart from each other;
• wherein a minimum distance between the first metal pieces and the second metal pieces in the stacking direction is greater than a minimum distance between adjacent first metal pieces in the stacking direction.

A battery, comprising:

• a packaging case;
• an electrolyte;
• and
• a battery core,
• wherein the battery core comprises:
• a first electrode plate:
• a second electrode plate;
• and
• an isolation film:
• wherein at least one of the first electrode plate and the second electrode plate comprises a layer-built tab;
• wherein the layer-built tab comprises:
• a plurality of metal pieces;
• and
• adhesives arranged between adjacent metal pieces;
• wherein
• the plurality of metal pieces are stacked, and adhered by the adhesives;
• a through hole is provided on each alternate metal piece in the plurality of metal pieces;
• and
• the through holes are filled with the adhesives, and the adhesives between and through the alternate metal pieces are connected to form a single body;
• and
• wherein the electrolyte and the battery core are positioned in the packaging case;
• wherein the plurality of metal pieces comprises first metal pieces and second metal pieces, the first metal pieces and the second metal pieces have same polarity;
• the first metal pieces are stacked in a stacking direction;
• each second metal piece is partially stacked with the first metal pieces in the stacking direction;
• the second metal pieces and the first metal pieces are spaced apart from each other;
• wherein a minimum distance between the first metal pieces and the second metal pieces in the stacking direction is greater than a minimum distance between adjacent first metal pieces in the stacking direction.