Positive electrode plate, negative electrode plate, battery cell, battery, and electric apparatus

A negative electrode plate, comprising:

• a negative current collector;
• and
• a negative active material layer disposed on at least one side of the negative current collector, wherein the negative current collector comprises a negative body portion and at least one negative tab disposed at one end of the negative body portion;
• wherein a width of a root of each negative tab along an MD direction is m2, measured in mm;
• a thickness of the root of each negative tab is d2, measured in mm;
• along the MD direction, a distance between central axes of two adjacent negative tabs is b2, measured in mm;
• a conductivity of the negative current collector is S2, measured in S/m;
• a width of the negative active material layer along a TD direction is a2, measured in mm;
• a mass per unit area of the negative active material layer is CW2, measured in g/1540.25 mm2;
• and
• wherein a design parameter of each negative tab is Fa, where
• Fa
• =
• m
• ⁢
• 2
• ×
• d
• ⁢
• 2
• ×
• S
• ⁢
• 2
• CW
• ⁢
• 2
• ×
• a
• ⁢
• 2
• ×
• b
• ⁢
• 2
• ,
• measured in 15.4025S·mm·g−1, and a value of Fa satisfies Fa≥0.02.

A battery cell, comprising at least one of:

• a positive electrode plate comprising:
• a positive current collector;
• and
• a positive active material layer disposed on at least one side of the positive current collector, wherein the positive current collector comprises a positive body portion and at least one positive tab disposed at one end of the positive body portion, wherein a first design parameter of each positive tab is Fc, where
• Fc
• =
• m
• ⁢
• 1
• ×
• d
• ⁢
• 1
• ×
• S
• ⁢
• 1
• CW
• ⁢
• 1
• ×
• a
• ⁢
• 1
• ×
• b
• ⁢
• 1
• ,
• measured in 15.4025S· mm·g−1, and a value of Fc satisfies Fc≥0.1;
• or
• a negative electrode plate comprising:
• a negative current collector;
• and
• a negative active material layer disposed on at least one side of the negative current collector, wherein the negative current collector comprises a negative body portion and at least one negative tab disposed at one end of the negative body portion, wherein a second design parameter of each negative tab is Fa, where
• Fa
• =
• m
• ⁢
• 2
• ×
• d
• ⁢
• 2
• ×
• S
• ⁢
• 2
• CW
• ⁢
• 2
• ×
• a
• ⁢
• 2
• ×
• b
• ⁢
• 2
• ,
• measured in 15.4025S·mm·g−1, and a value of Fa satisfies Fa≥0.02.