Do you know any important differences between lithium-ion batteries and storage batteries?

1. The difference in concept and nature. Lithium-ion battery: It is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. It mainly depends on the movement of lithium ions between the positive electrode and the negative electrode. In the process of charging and discharging, Li+ intercalates and deintercalates back and forth between the two electrodes; during charging, Li+ deintercalates from the positive electrode, and the electrolyte is inserted into the negative electrode. The negative electrode is in a lithium-rich state; the opposite is true during discharge. Due to the vivid chemical characteristics of lithium-ion batteries, the processing, survival, and use of lithium metal require very high conditions. Storage battery: storage battery is also called secondary battery. It is a device that directly converts chemical energy into electrical energy. It is a rechargeable battery designed to recharge through reversible chemical reverberation. It usually refers to a lead-acid battery. After discharging, the internal active material can be regenerated by charging to store the electric energy as chemical energy; when it is to be discharged, the chemical energy is converted into electric energy again. A storage battery is an electrochemical device that stores chemical energy and releases electrical energy when needed. 2. The safety function does not communicate with Li-ion batteries: Lithium-ion batteries come from the invariability of the positive electrode material and reliable safety design. Lithium iron phosphate batteries have passed strict safety tests, and will not appear even in violent collision Explosion, the heat of lithium iron phosphate will not increase, the electrolyte has low oxidation ability, so the safety is high. Batteries: Lead-acid batteries will explode under a strong collision, posing a threat to the lives of consumers. 3. Value difference Lithium-ion batteries: Lithium-ion batteries have high value, and lithium-ion batteries are three times more expensive than lead-acid batteries. The united service life clarifies that the cost of investing in communication is still that the life cycle of lithium-ion batteries is longer. Storage battery: The value of a storage battery may range from a few hundred yuan to a few thousand yuan. The value of each manufacturer is similar. 4. Differences in green environmental protection Li-ion battery materials do not contain any toxic and harmful substances, and are regarded as green battery by the world. The battery is pollution-free in production and use, and conforms to European RoHS regulations and is a green battery. There is a large amount of lead in lead-acid batteries, and if they are not handled properly after they are discarded, they will pollute the situation. 5. The service life of lithium-ion batteries is longer in terms of cycle life, and the battery life is relatively short. The number of cycles of lithium-ion batteries is generally around 2000-3000 times. The number of cycles of the battery is about 300-500. 6. Weight energy density. The energy density of lithium-ion batteries is generally 200~260wh/g, and lithium-ion batteries are 3~5 times that of lead-acid, which means that under the environment of communication capacity, lead-acid batteries are 3~ of lithium-ion batteries. 5 times, so in the light weight of energy storage devices, lithium-ion batteries occupy an absolute advantage. Lead-acid batteries are generally 50~70wh/g, with low energy density and too bulky. 7. Volumetric energy The volume capacity density of lithium-ion batteries is usually about 1.5 times that of batteries, so in an environment of communication capacity, the volume of lithium-ion batteries is about 30% smaller than that of lead-acid batteries. 8. The difference in temperature range The working temperature of lithium ion batteries is -20-60 degrees Celsius, and the thermal peak of lithium iron phosphate batteries can reach 350-500 degrees Celsius, and 100% capacity can still be released under high temperature environments. The normal operating temperature of the battery is -5-45 degrees. When the temperature drops by 1 degree, the relative battery capacity will drop by about 0.8%. 9. The difference in charging and discharging Li-ion battery has no image effect, the battery can be charged and discharged at any time, the self-discharge of the battery is low, the battery can be stored for a long time; the power is strong, it can be quickly charged and discharged, and it can cover more than 80% in 20 minutes, 15 It can be discharged in minutes. The battery has an image effect and cannot be charged and discharged at any time; there is a serious self-discharge phenomenon, and the battery is easy to be scrapped after a period of time; the discharge rate is small, and it cannot be discharged for a long time. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to judge the quality of lithium-ion battery UPS