Introduction to the classification of lithium-ion batteries for electric bicycles

Lithium-ion batteries for electric bicycles can be roughly divided into three categories: lithium manganate batteries, ternary material batteries and lithium iron phosphate batteries. Lithium manganate battery: To solve the high temperature performance of lithium manganate battery, the positive electrode material, battery structure design and electrolyte formula of the battery must be improved. In Japan and South Korea, modified lithium manganese oxide is used. When the modified lithium manganate battery is stored at 65°C for one week, the capacity drops to 99%. Ternary material battery: Cobalt, nickel, manganese ternary material is used as a lithium-ion battery as the cathode material. It overcomes the shortcomings of poor high-temperature performance of lithium manganate and improves the specific energy of the battery. Lithium iron phosphate battery: Since 2002, the United States and Canada have begun to develop lithium iron phosphate batteries, which have become a new type of power lithium ion battery with great development prospects. Long life, 2000 cycles of 1C charge and discharge at room temperature. Advantages of lithium iron phosphate batteries: high safety. The phosphate chemical bond has a strong binding force and good structural stability; it is environmentally friendly and does not contain any heavy metals; it is non-toxic (SGS certified), no pollution; fast charging, lithium iron phosphate batteries can be quickly charged and discharged with high current 5～10C ; Good high-current discharge performance; 10～50C high-current high-power discharge. Disadvantages of lithium iron phosphate batteries: low temperature performance is inferior to other cathode materials such as lithium manganate. The cell voltage of a lithium iron phosphate battery is 3.2V. A 36V battery pack requires 12 single cells in series. The life of a single lithium iron phosphate battery currently exceeds 2000 times, but the life of a battery pack may only be 500 times. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete.