Function of the Cell Can or Enclosure

cell enclosure functions

The function of the cell can or enclosure is to contain the chemistry over the lifetime of the battery cell and to allow the electrical, mechanical and thermal connections. It must also work in the extremes and have a controlled failure mode. The main cell formats are: coin, cylindrical, pouch and prismatic. The main functions … Read more

Cell Sample Maturity

A B C D Sample development

Cell Sample Maturity is normally defined by the A, B, C, D sample definitions. These stages of the cell design, production line development and material supply are key to the relationship between the cell manufacturer and cell customer. The customer needs to have confidence in the cell design, robustness and quality and this is only … Read more

Smart Battery Development

smart battery design

Prof James Marco WMG Energy Group Significant advances have been made in recent years in our understanding of the electrochemical performance of lithium-ion batteries (LIBs), their degradation, safety, manufacturability and recyclability – in part, through innovations in experimental methods and mathematical modelling. WMG is at the heart of this research through our involvement in projects … Read more

Tesla 4680 Cell

Tesla 4680

The Tesla 4680 cell has intrigued ever since it was announced. A cylindrical cell that is 46mm in diameter and 80mm high. Estimated Specifications: The assumption is that Panasonic / Tesla have initially used the same fundamental chemistry in this cell as the 21700 or even stepped back to the previous one. This would be … Read more

3D Electrodes

3D Electrodes - Addionics

In the design of a normal lithium-ion cell the electrodes are composed of active materials on current collectors which are flat sheets of copper for the anode and aluminium for the cathode. These metal sheets are around 4-9 µm thick for copper and 15-25 µm thick for aluminium and have the active materials coated on … Read more

Battery Cell Manufacturing Process

cell manufacture schematic

In order to engineer a battery pack it is important to understand the fundamental building blocks, including the battery cell manufacturing process. This will allow you to understand some of the limitations of the cells and differences between batches of cells. Or at least understand where these may arise. Step 1 – Mixing The anode … Read more

Power versus Energy Cells

power versus energy cell

Comparing power versus energy cells we see there are some fundamental differences. A high energy cell will have better volumetric and gravimetric energy density at the expense of the ability to deliver a high current. The power cell will have a low internal resistance and will be optimised to deliver current over energy density. Teardown … Read more