The invention relates to a secondary electric power supply and especially relates to an insulating safe battery module. The insulating safe battery module is characterized in that the insulating safe battery module comprises an insulating base and an insulating top cover; longitudinal grooves of which the number is the same as the number of unit batteries are arranged at an upper part of the insulating base side by side; the insulating top cover comprises an insulating frame and an insulating cover plate; the insulating frame is provided with longitudinal caulking grooves side by side so that the insulating frame can be sleeved on the unit batteries and electrodes are shown upward; and the insulating cover plate covers the insulating frame and is connected to the insulating frame. The insulating safe battery module has the advantages that 1, the insulating base and the insulating top cover in the insulating safe battery module form an integral body so that use and maintenance is convenient and operation is simple; 2, an insulating division plate is arranged between each adjacent two of the grooves or the caulking grooves so that safety is high; and 3, in the insulating safe battery module, a ventilated gap is arranged between each adjacent two of unit batteries so that battery heat dissipation is promoted; a temperature difference between unit batteries is reduced; a battery service life is prolonged; and use performances are guaranteed.