The invention discloses a
battery pack monitoring system and method based on a built-in sensor, the
battery pack comprises a plurality of battery cells, the
system comprises a plurality of
battery cell internal monitoring assemblies, a module
data acquisition unit and a monitoring terminal, the
battery cell internal monitoring assemblies are packaged in the battery cells, and the module
data acquisition unit is connected with the monitoring terminal. The module
data acquisition unit is respectively in wired connection with the plurality of
battery cell internal monitoring assemblies, and the monitoring terminal is in
wireless or
wired communication with the module
data acquisition unit; the
cell internal monitoring
assembly comprises a miniature PCB, a
pressure sensor, a temperature sensor and a
signal terminal, and the
pressure sensor and the temperature sensor are integrated on the miniature PCB; the
signal terminal is arranged on a cover plate of the battery
cell, and the
signal terminal comprises a battery
cell positive pole, a battery cell negative pole and a signal line pole. According to the
system and the method, the problems of large external monitoring error, unreliable
wireless transmission, sealing failure of wired transmission, multi-cell
signal interference and the like in the prior art are solved.