Line sequence detection tool and line sequence detection system for lithium battery formation

The invention provides a line sequence detection tool and a line sequence detection system for lithium battery formation, the line sequence detection tool is applied to lithium battery formation equipment, the lithium battery formation equipment comprises a first power supply module and a series circuit connected with the first power supply module, and the series circuit comprises a plurality of channels connected in series; the line sequence detection tool comprises a plurality of resistors and a switching assembly connected with the plurality of resistors. The line sequence detection tool comprises a first detection mode, in the first detection mode, the first power module outputs constant current to the series circuit, and the switching assembly controls each resistor to be connected with each channel in a one-to-one mode so as to determine the wiring state of each channel according to the voltage of each resistor. According to the line sequence detection tool provided by the invention, the line sequence d