Lithium-ion battery

A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate and a separator provided between the positive electrode plate and the negative electrode plate,

• wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode active layer on a surface of at least one side of the positive electrode current collector;
• the negative electrode plate comprises a negative electrode current collector and a negative electrode active layer on a surface of at least one side of the negative electrode current collector;
• the separator comprises a base film;
• and
• a puncture force A of the separator, a thickness B of the base film, a puncture force C of the positive electrode current collector, a thickness D of the positive electrode current collector, a puncture force E of the negative electrode current collector and a thickness F of the negative electrode current collector satisfy relationship 1:
• A
• B
• >
• C
• D
• +
• E
• F
• relationship
• ⁢
• 1
• wherein, A ranges from 1 N to 8 N;
• B ranges from 3 μm to 16 μm;
• C ranges from 1 N to 10 N;
• D ranges from 5 μm to 20 μm;
• E ranges from 1 N to 10 N;
• and F ranges from 3 μm to 20 μm.