Comparison of Cell Stacking and Winding Processes

With the popularity of mobile devices and electric vehicles, battery manufacturing technologies have attracted increasing attention. Cell stacking and winding are two common battery manufacturing processes; this article compares and analyzes them.

1. Basic principles

Cell stacking stacks multiple anode and cathode sheets together and connects them with conductive agents to form a layered structure suitable for high-power batteries. Winding rolls electrode sheets into long strips and winds them into a cylinder with separators and electrolyte, which is suitable for high energy density cells.

2. Advantages and disadvantages

Stacking advantages: higher power density, better heat dissipation, and improved reliability; disadvantages include higher production cost and more complex maintenance. Winding advantages: higher energy density, lower production cost, and easier maintenance; disadvantages include poorer heat dissipation and potentially lower reliability.

Atonm produces the Metal Double-Sheet Detector 1000L for detecting stacked metal sheets, widely used in lithium battery manufacturing to prevent die damage and material waste. Although winding is common in the battery industry today, ongoing research will determine the long-term advantages between the two processes.