The present invention discloses a
distributed power battery pack monitoring device, comprising a charger or load interface, a DC power supply interface, a first
inductor L1, a second
inductor L2, a plurality of slave machines, a
battery pack, a host, a DC power supply line DC+, and a DC power supply line DC-; wherein each slave
machine comprises a third
inductor L3, a fourth inductor L4, a first
capacitor C1, a second
capacitor C2, a slave
machine power supply module, a slave
machine microcontroller MCU, a
terminal voltage acquisition module, a temperature acquisition module, an
internal resistance measuring module, and a slave machine DC carrier module; the host comprises a fifth inductor L5, a sixth inductor L6, a third
capacitor C3, a fourth capacitor C4, a host power supply module, a host
microcontroller MCU, a total
voltage acquisition module, a current acquisition module, a display module, and a host DC carrier module. The
distributed power battery pack monitoring device of the present invention achieves information interaction between the host and the slave machines through carriers on the DC power supply lines, thereby saving the limited inner space of an automobile, and saving time and cost of
periodic maintenance of the automobile.