Aiming at the problem that intensifying global energy crisis and worsening environmental pollution

battery packs

as a solution offering high energy density and portability

face significant safety risks

particularly challenges brought by short-circuit faults

a novel method for locating short-circuit faults within battery packs

utilizing beamforming technology based on alternating magnetic fields is proposed.Through theoretically analyzing of the generation mechanism of battery-induced alternating magnetic fields

a simplified magnetic model battery field is constructed

and the differences in magnetic for phase between short-circuited and normal batteries are elaborated.in detal.Furthermore

in order to test the proposed localization method

an experimental platform is set up

employing a high-sensitivity optically pumped magnetometer to collect magnetic field data

and beamforming technology is used for data processing.The results demonstrate that this method can effectively identify and precisely locate short-circuited batteries within the battery pack

proving its effectiveness and practicality in both simulation environments and practical tests.It offers a novel and effective solution for battery safety management

helping to promptly find and deal with short-circuit faults within battery packs

thereby enhancing the safety of the overall system.