Battery pack and battery module capable of detecting contact point

The invention discloses a battery pack and a battery module capable of detecting a contact point. The battery pack can comprise at least a first battery module, a second battery module, a first separation circuit and a second separation circuit, wherein each battery module comprises at least a first battery unit, a second battery unit and a power connection line for coupling the first electrode ofthe first battery unit to the second electrode of the second battery unit, the first battery unit comprises a monitor, the first separation circuit and the second separation circuit provide separation and a voltage transfer path, the monitor comprises a transmitter/receiver and is used for carrying out signal communication with the second battery unit through a communication conduction line, anda voltage difference detector coupled to the power connection line and the voltage transfer path and used for detecting the voltage difference between the power connection line and the voltage transfer path, and the monitor in