Battery Manufactory

Lithium-ion polymer battery : the invisible killer behind overcharging and discharging In the comment area of news reports about smartphones suddenly catching fire, users can always see doubts about the safety of lithium batteries. As the power core of modern electronic devices, lithium-ion polymer batteries have penetrated into every corner of life with their high energy density and flexible form. Although this advanced battery technology using solid polymer electrolytes is safer than traditional liquid lithium batteries , it still has hidden dangers that cannot be ignored - the safety problems caused by overcharging and discharging are becoming a time bomb in the smart era. I. Overcharging: the critical point of energy runaway When the charging voltage exceeds the safety threshold of 4.2V, drastic changes begin to occur inside the lithium-ion polymer battery. Excessive deintercalation of lithium elements in the positive electrode material causes the electrolyte to d...