LITHIUM-ION BATTERY

原文（中国語）

The disclosure provides a lithium-ion battery that satisfies the equation (2M+3)(S+2)/W≥20, where M=exp(m/d)+(d−2)(m−0.26). Wherein, mis the tensile strength of the negative electrode current collector in the length direction, and dis the thickness of the negative electrode current collector. Additionally, S=exp(m/d)+(d−2)(m−0.16), wherein mis the puncture strength of the separator, and dis the thickness of the substrate within the separator. Furthermore, W=(((exp(−10q))/(φ−6)+exp(10q))(d−13.5)(ρ−3.5))/100. This disclosure effectively addresses the issue of pressure exerted on the battery casing due to volume swelling of the negative electrode material, thereby significantly enhancing the battery's cycle life and safety performance.