Professional Manufacturer of One Stop Solutions Provider for all kind of lithium battery 10 years more .

English
EV battery

How to calculate the cost of lithium batteries for new energy vehicles?

by:Vglory      2021-05-10
Lithium batteries are mostly used for power lithium-ion batteries and batteries and new energy cars. There are two main types of active materials for the positive electrode, one is nickel cobalt manganese lithium compound (NCM), and the other is lithium iron phosphate (LFP); The negative electrode is mostly graphite (95%), plus some additives. Lithium ions are deintercalated during discharging, and lithium ions are intercalated during charging, forming a discharge or charging current. Generally, new energy car lithium batteries are mostly composed of batteries, modules, and battery packs; the battery core is the smallest unit of the battery pack, and the module is composed of multiple batteries connected, and the battery pack is composed of multiple modules. , Other plus battery management control module, connection terminals, etc. If the on-board lithium battery pack is used as a subsystem, then the battery cell cost will account for about 85%. Therefore, it is optimization to make an accurate calculation of the battery cell cost, find the primary cost driving point, and then optimize the technology. Battery pack cost, an important way to do a good job in the cost planning of new energy cars. Analysis of Lithium Battery Cells This article only describes some of the analysis processes in the process, and does not ensure comprehensiveness. The analysis of lithium battery cells must be done in a professional laboratory, which is a guarantee of safe operation! First, perform long-term and thorough discharge of the lithium battery cell. Then, perform low-temperature operation in a boring laboratory, open the cell shell, and measure the thickness and dimensions of the positive electrode membrane, negative electrode membrane, and barrier separately. In the meantime, the positive electrode membrane contains active compounds. (NCM) and aluminum base material, the negative electrode film contains active compound (Graphit) and copper base material, and then the primary material input parameters for the cost calculation of lithium battery cells are obtained. The main material cost driving point is ternary materials, electrolyte, copper film, etc. Optimizing material costs starts from these material cost-driven points, such as ternary materials (NCM). Among them, C refers to expensive cobalt materials. How to reduce the proportion of cobalt materials is the preferred option for optimizing material costs. From the original NCM111, Changing to NCM523 or even NCM811 is to add nickel content to reduce the cobalt content. Of course, the addition of nickel content also affects the stability of the battery cell. Therefore, it is necessary to balance and optimize the stability and material cost. ; Others, copper film, electrolyte, etc. also have room for optimization. During the manufacturing process of lithium battery cells, mixing, coating, drying, compacting, sub-rolling, vacuum drying, aging and other processes are batch production processes (batch), while slicing, lamination, electrolyte filling, and packaging processes It is the beat manufacturing process. Using the reference cost accounting model of Guanyu Electromechanical Technology (Shanghai) Co., Ltd. can calculate the manufacturing cost and distribution of this lithium battery cell. From the results of the reference cost calculation, the driving point of the manufacturing cost is mainly in the beat manufacturing process, such as slicing, lamination, electrolyte injection, packaging and other processes. To optimize the manufacturing cost of the battery cell, it is necessary to start from these processes. Up. 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: Can lithium batteries be compatible with various fast charging?
Custom message
Chat Online
Chat Online
Leave Your Message inputting...
Sign in with: