The assembly process and working principle of lithium iron phosphate battery are introduced. Generally speaking, lithium iron phosphate batteries have burning or even explosion safety problems during the assembly process. The root of these problems is the thermal control inside the battery, so non-professionals suggest not to assemble lithium ion batteries. At the same time, the safety technology of lithium-ion batteries is constantly improving.

　　Introduction to Lithium Iron Phosphate Battery

　　Lithium iron phosphate battery refers to a lithium ion battery using lithium iron phosphate as the positive electrode material. Lithium-ion battery cathode materials mainly include lithium cobalt acid, lithium manganese acid, lithium nickel acid, three materials, and lithium iron phosphate. Lithium cobalt oxide is the negative electrode material for most lithium-ion batteries.

　　Lithium iron phosphate battery. JPG

　　Assembly process of lithium iron phosphate battery

　　Choose the right battery. The battery type, voltage and internal resistance must be matched. Please balance the battery before assembly. Cut electrodes and punch holes.

　　2. Calculate the distance according to the number of holes and cut the insulation board.

　　3. When the screws are complete, please use flange nuts to prevent the nuts from falling off. Once the screws are connected, the battery pack can be fixed.

　　4. When connecting and welding wires and voltage collection wires (equalization wires), do not connect the external protection board to avoid accidentally burning the protection board.

　　5. Fix the insulating silica gel again. The silica gel will solidify after a while.

　　6. Install the protective plate. If you forgot to balance the battery before, this is the last chance before the battery is assembled.

　　7.Repair the entire battery pack with an insulating plate, and use nylon straps and nylon straps for more endurance. Please note that we do not use the steel material shell, the shell is beautiful and strong steel material, but the battery is difficult to guarantee Not handling some shells may reduce battery leakage and even cause accidents due to poor insulation.

　　8. After the battery is packaged as a whole, be sure to fix the battery and the protective plate. The actual measuring height of the battery is 1 meter and it works normally.

　　9. The final packaging is completed, and the output and input are all silicone wires. The whole is a 48V20AH battery pack and lithium iron battery. The battery pack weighs 9 kg, which is half the weight of an equivalent acid battery.

　　10. After the completion of the tutorial, we conducted a post-assembly test on the lithium iron phosphate battery, which met our requirements.