Battery Manufactory

In the cold winter, the battery level of mobile phones drops "cliff-like", and in the hot summer, the charging speed of electric vehicles slows down inexplicably - temperature is the culprit behind the scenes. Lithium batteries are as sensitive to temperature as human skin. In severe cold and heat, they may "strike" or "self-destruct". This article will dismantle how temperature destroys batteries at the molecular level and provide scientific response strategies. I. The "frozen seal" of low temperature on batteries 1. How does low temperature "paralyze" batteries? Electrolyte viscosity soars: Below 0°C, the fluidity of the electrolyte drops sharply, the migration of lithium ions is like being stuck in a quagmire, and the internal resistance increases sharply. Capacity "shrinks": At -20°C, the capacity of lithium batteries is only about 30% (data source: Argonne National Laboratory, USA). Voltage dive: iPhone m...

"Battery repair artifact", "One move to restore 100% capacity", "Old battery refurbished as new" - similar advertisements are flooding the Internet, attracting countless users who are troubled by battery life issues. But can batteries really "rejuvenate"? Repair or IQ tax? Is refurbishment legal? This article will clear the fog for you and provide rational solutions based on battery chemistry principles and industry truths. I. The essence of battery aging: irreversible chemical decay Whether it is a mobile phone lithium battery , an electric vehicle power battery or a lead-acid battery, the essence of aging is an irreversible chemical reaction of the internal materials: Lithium battery: electrolyte decomposition, positive electrode material structure collapse, lithium dendrite growth. Lead-acid battery: plate sulfidation, electrolyte stratification. NiMH battery: electrode passivation, active material shedding. Conclusion: Battery ...