Charging detection circuit and device, battery management system, battery pack and electric equipment

The embodiment of the invention provides a charging detection circuit, a charging device, a battery management system, a battery pack and electric equipment. The charging detection circuit comprises a first voltage division branch, a second voltage division branch, a third voltage division branch and a comparator. Each voltage dividing branch comprises at least two resistors which are connected in series, and the two ends of each voltage dividing branch are electrically connected between the output terminal of the first voltage input source and the isolation ground. Different input pins of the comparator are respectively connected with the voltage division branch, a first output pin is configured to output a first signal based on the voltage of the first input pin and the voltage of the third input pin, and a second output pin is configured to output a second signal based on the voltage of the second input pin and the voltage of the fourth input pin. In the charging detection circuit, by arranging the three v