Battery pack insulation detection method and system, electronic device and storage medium

• Main Authors: FENG YACHUN, FENG WEI, LIU XIAO, ZHANG YANHUI, YIN DUO, ZHANG CHENNING
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2019
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a battery pack insulation detection method and system, an electronic device and a storage medium. The method is used for detecting insulation impedance of a battery pack and solves the problem of not precise insulation impedance detection and overhigh detection cost in the prior art. The method comprises the following steps: detecting an insulation resistor set in the battery pack and obtaining insulation performance of the insulation resistor; simplifying an insulation impedance detection model between the battery pack and a chassis according to the insulation performance, and obtaining a battery pack insulation detection internal resistance model considering multiple parameters of battery temperature and the like; and calculating an estimated insulation impedancevalue of the insulation resistor according to the detection model and the detection internal resistance model. The method improves detection precision, can fully simulate current change caused by instantaneous voltage change