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2024
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04
Do you know the difference between lithium batteries and batteries?
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Battery: A battery, also known as a secondary battery, is a type of device that directly converts chemical energy into electrical energy. It is a rechargeable battery that is designed according to reversible reactions, and typically refers to lead-acid batteries. After no charging, the active substance of the battery can be regenerated by charging.
Lithium battery: Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and non-aqueous electrolyte solution. Considering the particularly active chemical properties of lithium metal, it promotes the processing, preservation, and utilization of lithium metal, which has particularly high requirements for the regional environment. Lithium batteries can be roughly divided into two types: lithium metal batteries and lithium-ion batteries.
What is the difference between lithium batteries and batteries
According to weight density, the current density of lithium batteries is around 200-260wh/g, and that of batteries is around 50-70wh/g. This indicates that the surface weight energy density of lithium batteries is 3-5 times that of batteries, which means that for the same capacity, batteries are 3-5 times that of lithium batteries. Therefore, in terms of lightweight energy storage equipment, lithium batteries have a significant advantage.
According to the body type density, the capacity density of lithium batteries is usually between 1.5 times that of batteries, so under the same capacity, lithium batteries are 30% smaller than batteries.
At present, lithium batteries are about three times more expensive than batteries in terms of price. However, considering the service life, investing the same cost still results in a longer service life for lithium batteries.
Applicable scope: Lithium batteries have slightly weaker safety compared to batteries, so safety precautions should be strengthened in all aspects during use, such as avoiding external forces or accidental damage to lithium batteries, as this may cause fire or explosion; At present, the temperature range of lithium batteries is also relatively complete, so in other adaptability aspects, lithium batteries are not inferior to batteries.
Place of use: Lithium batteries: smartphones, computers, hardware tools, UPS power supplies, etc. Battery: electric vehicle battery, car starter.
Safety: The safety of lithium batteries comes from the stable performance of positive electrode materials and reliable safety regulations. Lithium iron phosphate fully solves the hidden dangers of lithium cobalt oxide and lithium manganese oxide. Lead acid batteries can explode under strong impact, while lithium iron phosphate has undergone rigorous safety testing, making it less likely to explode even in severe impacts.
The discharge performance of lithium-ion batteries and batteries that are fully charged at the same temperature and with different discharge currents, the discharge output characteristics of lithium-ion batteries are relatively stable, while the discharge output characteristics of batteries have significant differences, which can lead to power instability. Lithium batteries, whether in terms of size to energy or weight to energy, are more than three times higher than batteries. They also have advantages such as smaller size, lighter weight, and longer cycle life. The battery efficiency is not high, and the battery pack is bulky, resulting in a heavy body and short driving range.
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