The invention discloses a method for detecting and positioning inconsistent
abnormal cells of a battery cluster, and belongs to the field of
lithium ion battery detection.The method comprises the steps that firstly, charge-
discharge cycles are divided based on a charge-
discharge strategy of the battery cluster and upper and lower
cut-off voltages; according to charging and discharging upper and lower
cut-off voltages of a battery cluster, appropriate
feature extraction voltages are selected to influence inconsistent monomers of the available capacity of the
battery pack, then the inconsistent monomers are further diagnosed and positioned by further utilizing the residual chargeable electric quantity and the residual dischargeable electric quantity, and the
battery pack available capacity can be further diagnosed and positioned according to the characteristics of the available capacity of the
battery pack. According to the method, real-time detection and positioning can be carried out based on the
voltage of the single batteries, the single batteries with relatively high comprehensive inconsistency degree can be preferentially positioned, additional parameter detection is not needed, convenience and rapidness are realized, the inconsistent single batteries can be conveniently and timely processed, and the service life, the performance and the safety of the battery cluster during use are ensured.