Protection circuit board for detecting disconnection of sampling line of lithium battery pack

The utility model discloses a protection circuit board for detecting disconnection of a sampling line of a lithium battery pack, which comprises a protection circuit board body, the protection circuit board body comprises an acquisition module, a monitoring module, a control module, a protection module, a repair module and a power supply module, and the acquisition module is electrically connected with the monitoring module; according to the utility model, mainly through cooperation of the acquisition module, the monitoring module, the control module, the protection module, the repair module and the power supply module, power can be supplied to the monitoring module, the control module and the repair module through the power supply module after the circuit board is disconnected; the control module directly controls the repair module to repair the protection circuit of the protection circuit board, and after repair is completed, the control module controls the protection module to continuously protect the lith