The utility model relates to a rechargeable battery temperature-control protector, which particularly is used for protection of precise temperature control of a rechargeable battery. The utility model belongs to the technical field of relays. The utility model mainly uses an insulation isolation bracket, which is arranged into a cross-shaped spacer and a cross-shaped isolated seat; a hot bimetallic moving sheet is arranged in a moving sheet arranging groove of the cross-shaped isolated seat; a fixed sheet is arranged in a fixed sheet arranging groove of the cross-shaped spacer; the cross-shaped spacer and the cross-shaped isolated seat are combined into a whole and are loaded into a shell. The utility model has the advantages of simple structure and reasonable and compact structure; because an isolated structure is used by the insulation isolation bracket, and an upper and a lower fixed concave convex grooves are arranged; after the hot bimetallic sheet and the fixed sheet are loaded, the firm positioning can be carried out and the excursion and the malposition are not easy to occur. Thus, the product performance is stable and reliable and the accuracy of the whole product can be ensured. The utility model has the advantages of low cost and convenient installation; the error can not be generated when the utility model is arranged, and the service life can be prolonged.