What are the important components of the material of the lithium-ion battery pack

① Cathode material --- Cathode material accounts for 30%-40% of the cost of lithium-ion batteries. The performance of the positive electrode material directly affects the performance of the lithium-ion battery, and its cost also directly determines the ups and downs of the battery cost. Recycle the carbon electrode that can absorb lithium ions. When discharging, lithium turns into lithium ions, leaving the anode of the battery to reach the cathode of the lithium ion battery. ②Negative electrode material----The material chooses the intercalable lithium compound whose potential is as close as possible to the lithium potential. For example, various carbon materials include natural graphite, synthetic graphite, carbon fiber, mesosphere carbon, etc. and metal oxides. ③Electrolyte---Lithium-ion battery electrolyte is the carrier of ion transmission in the battery. Electrolyte is used to conduct ions between the positive and negative electrodes of lithium-ion batteries. Electrolyte is used to transport charges between the positive and negative electrodes. It affects the energy density, power density, wide-temperature application, and cycle of lithium-ion battery packs. Factors such as longevity and safety function. ④Breaks---Breaks are one of the key internal components in the layout of lithium-ion batteries. The function of the barrier determines the interface layout and internal resistance of the battery. The recovery of polyene microporous membranes such as PE, PP or their composite membranes, especially the PP/PE/PP three-layer barrier not only has a lower melting point, but also has a higher resistance. Puncture strength plays a role of heat insurance. ⑤Shell --- There are two main types of shells for lithium-ion batteries: steel shell and aluminum shell. Recycling steel or aluminum materials, the cover assembly has the result of explosion-proof and power-off. Lithium-ion battery pack layout: Lithium-ion battery packs usually have two appearances: cylindrical and square. The internal recycling spiral wound layout of the battery is made of a very elegant and highly permeable polyethylene film cut off material at the distance between the positive and negative electrodes. The positive electrode includes a current collector composed of lithium cobalt oxide and aluminum foil. The negative electrode is composed of a current collector composed of graphitized carbon material and copper foil. Lithium-ion batteries are filled with organic electrolyte solutions. Others are also equipped with safety valves and PTC components to protect the battery from damage when the battery is abnormal and the output is short-circuited. 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: What are the layout features and advantages of cylindrical lithium-ion battery packs?