Nonaqueous electrolyte battery, electrode plate for nonaqueous electrolyte battery, and method for manufacturing electrode plate for nonaqueous electrolyte battery

An electrode plate of a nonaqueous electrolyte battery comprising:

• a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface, and a second surface;
• and
• an electrode material composition layer consisting of a first electrode material composition layer formed on the first surface of the sheet conductive base material and a second electrode material composition layer formed on the second surface with an uncoated area extending in a direction of the second sides, the uncoated area being formed intermittently in a direction of the first sides at a position where the first electrode material composition layer and the second electrode material composition layers are mutually opposed
• wherein the electrode material composition layer which is formed on at least one of the first and second surfaces of the sheet conductive base material has its coated amount continuously increased or decreased from one end to the other end along the first side of the sheet conductive base material.

A nonaqueous electrolyte battery comprising:

• a spiral cathode plate which is formed by winding a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface and a second surface around a shaft parallel to the second side;
• a spiral anode plate which is formed by winding a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface and a second surface around a shaft parallel to the second side and which is disposed to be substantially parallel to the surface of the cathode plate;
• an electrode material composition layer formed on the first and second surfaces of the cathode and anode plates and having an uncoated area, which is formed in multiple numbers on at least one of the first and second surfaces along the first side to extend in a direction of the second side, disposed intermittently with respect to the first side, the electrode material composition layer having a coating start edge section and a coating end edge section, the coating start edge section having a cross-section continuously increased in a coating direction and the coating end edge section having a cross-section continuously decreased in the coating direction, as expressed by the following equations,
• δC−δS=2 to 8 μm
• δC−δE=3 to 8 μm
• LS=2 to 4 mm
• LE=2 to 4 mm
• where δC is a coated thickness at a center of a coated part in the coating direction where the thickness of the coated layer is stable, δS is a coated thickness at 1 mm from a start coating position, δE is a coated thickness at 1 mm from an end coating position, LS is a length from the start of coating until the coated thickness becomes uniform, and LE is a length from the point where the coated thickness is uniform to the point where the coating is terminated;
• a separator which is held between the cathode plate and the anode plate;
• and
• an outer member which has a positive terminal electrically connected to the uncoated area of the cathode plate and a negative terminal electrically connected to the anode plate.

A nonaqueous electrolyte battery comprising:

• a spiral cathode plate formed by winding a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface and a second surface around a shaft parallel to the second sides;
• a spiral anode plate formed by winding a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface and a second surface around a shaft parallel to the second sides, the spiral anode plate being disposed to be substantially parallel to the surface of the cathode plate;
• an electrode material composition layer formed on at least one of the first and second surfaces of the cathode plate and/or the anode plate to have the coated amount continuously increased or decreased from one end to the other end along the first side of the cathode plate and/or the anode plate;
• a separator held between the cathode plate and the anode plate;
• and
• an outer member having a positive terminal electrically connected to the cathode plate and a negative terminal electrically connected to the anode plate.

An electrode plate of a nonaqueous electrolyte battery comprising:

• a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides, a first surface, and a second surface;
• and
• an electrode material composition layer consisting of a first electrode material composition layer formed on the first surface of the sheet conductive base material and a second electrode material composition layer formed on the second surface with an uncoated area extending in a direction of the second sides formed intermittently with respect to a direction of the first sides at a position where the first electrode material composition layer and the second electrode material composition layer are mutually opposed, the first and second electrode material composition layers having a coating start edge section and a coating end edge section, the coating start edge section having a cross-section continuously increased in a coating direction and the coating end edge section having a cross-section continuously decreased in the coating direction, as expressed by the following equations,
• δC−δS=2 to 8 μm
• δC−δE=3 to 8 μm
• LS=2 to 4 mm
• LE=2 to 4 mm
• where δC is a coated thickness at a center of a coated part in the coating direction where the thickness of the coated layer is stable, δS is a coated thickness at 1 mm from a start coating position, δE is a coated thickness at 1 mm from an end coating position, LS is a length from the start of coating until the coated thickness becomes uniform, and LE is a length from the point where the coated thickness is uniform to the point where the coating is terminated.

An electrode plate of a nonaqueous electrolyte battery comprising:

• a rectangular sheet conductive base material having a pair of first sides, a pair of second sides shorter than the first sides;
• and
• an electrode material composition layer formed on the surface of the sheet conductive base material with an uncoated area extending in a direction of the second sides formed intermittently with respect to a direction of the first sides at regular intervals, having a coating start edge section and a coating end edge section, the coating start edge section having a cross-section continuously increased in a coating direction and the coating end edge section having a cross-section continuously decreased in the coating direction, as expressed by the following equations,
• δC−δS=2 to 8 μm
• δC−δE=3 to 8 μm
• LS=2 to 4 mm
• LE=2 to 4 mm
• where δC is a coated thickness at a center of a coated part in the coating direction where the thickness of the coated layer is stable, δS is a coated thickness at 1 mm from a start coating position, δE is a coated thickness at 1 mm from an end coating position, LS is a length from the start of coating until the coated thickness becomes uniform, and LE is a length from the point where the coated thickness is uniform to the point where the coating is terminated.