Surge protection circuit applied to storage battery pack

The invention provides a surge protection circuit applied to a storage battery pack, and relates to the technical field of semiconductors, and the surge protection circuit comprises a surge discharge unit which is connected in series between a battery positive electrode and a battery negative electrode of the storage battery pack; the snapback detection unit is connected in series between the positive electrode of the battery and the negative electrode of the battery and is connected with the surge discharge unit through a first voltage transmission path; the anti-latch unit is connected with the snapback detection unit through a second voltage transmission path; when the snapback detection unit detects that the positive electrode of the battery surges, the snapback detection unit is conducted and controls the surge discharge unit to conduct and discharge surge current, and controls the latch-up prevention unit to be in a high-resistance state, so that the snapback detection unit is in a voltage snapback stat