Analysis on the difference of characteristics between power lithium battery and ordinary lithium battery

　　This paper will analyze the characteristics difference between power lithium batteries and ordinary batteries. In short, it is the characteristics difference between power lithium batteries used in electric cars and general purpose OTong lithium batteries. Before the analysis, you should have a certain psychological expectation on the safety, performance and other aspects of the difference.

　　1, power lithium battery and ordinary battery difference: the cathode material is not the same

　　For example, lithium iron phosphate power battery to lithium iron phosphate lifecopo4 olivine composition of lithium battery cathode material, and lithium iron phosphate power battery using lithium metal or lithium alloy as battery cathode material, using non-aqueous electrolyte solution; In general, lithium batteries are mainly cathode materials of lithium manganate batteries, and spinel lithium manganate batteries are used as raw materials. LiMn2O4 spinel lithium manganate battery was first prepared by hunter in 1981 as a battery cathode material with three-dimensional lithium ion battery safety channel. However, with the development trend of lithium battery cathode materials, there will be a large number of high-quality battery cathode materials to replace the existing raw materials in the future. However, the safety factor of lithium battery materials is more critical. Lithium-iron oxide power batteries do not catch fire and do not explode during piercing, but there is a risk that lithium batteries will explode during piercing

　　2, power lithium battery and ordinary battery difference: power lithium battery is more difficult to explode fire

　　Lithium iron phosphate battery power lithium battery can withstand 100% overcharging, not easy to explosion and fire; Usually, when the lithium battery reaches the required standard value, it will produce steam to precipitate

　　3. Difference in charge and discharge performance

　　The difference between power lithium battery and ordinary lithium battery in charge and discharge: lithium iron phosphate power battery can be applied to the continuous charge and discharge rate of 30C, not easy to appear safety hazards. Some lithium iron phosphate batteries can be charged at a single charge of 600A, while ordinary lithium batteries can be charged and discharged at a rate of 1C under all normal conditions. Persistently high charge-discharge rates will lead to the death of rechargeable batteries

　　4, power lithium battery and lithium battery net weight difference

　　The net weight of a lithium-iron phosphate battery of the same volume is almost twice that of an ordinary lithium-ion battery. The difference between power lithium battery and lithium battery is analyzed from the perspective of internal resistance: the internal resistance of lithium iron phosphate power battery with the same volume is much smaller than that of ordinary lithium battery

　　5, power lithium battery and ordinary lithium battery volume difference

　　The power of lithium iron phosphate battery of the same volume is lower than that of ordinary lithium battery, that is, the specific energy of the battery made of the cathode material of lithium iron phosphate battery is about 60% lower than that of ordinary lithium battery

　　6. Price difference between lithium iron phosphate power battery and lithium battery

　　Lithium iron phosphate batteries cost about 50 percent more than regular lithium batteries

　　7. Working temperature difference between lithium iron phosphate power battery and lithium battery

　　Lithium iron phosphate power batteries operate at slightly higher temperatures than lithium batteries, which operate at just under 5 degrees

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