Figure 1From: Mass-Spring-Damping Theory Based Equivalent Mechanical Model for Cylindrical Lithium-ion Batteries under Mechanical AbuseExperimental settings under mechanical abuse tests: a Universal tensile testing machine and safety equipment, b Voltage data recorder, c Charge-discharge tester and batteries, d Hemispherical punch, d = 14 mm, e Rigid rod punch, d = 24 mmBack to article page