Over-current protection assembly capable of quickly responding

The invention discloses an over-current protection assembly capable of responding quickly, which comprises an over-current protection element and a control unit, and is characterized in that the over-current protection element comprises three conductive pads which are welded on a circuit board to form two current circuits; a control unit is used for controlling a switch connected with a circuit of a heating layer in the overcurrent protection element, and when the current exceeds a certain set threshold value, the control unit opens the circuit connected with the heating layer and activates the heating layer to enable the heating layer to flow through and heat, so that the protection action time of the overcurrent protection element is shortened; when the current is below the set threshold value, the control unit closes the circuit connected with the heating layer, the heating layer is not electrified and does not emit heat, the overcurrent protection element is in a normal working state, and error protection