Cell

Example

Use in Lemonergy

Connect each material with its function.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Learn it in Lesson 0 · Battery basics →

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Cylindrical cell

A cell made by winding the electrodes into a jelly roll and sealing it in a round metal can. Sizes are named by their dimensions: a 21700 cell is 21 mm across and 70 mm long.

Electrode

A solid conductor where the cell’s reaction happens, in contact with the electrolyte. A lithium-ion cell has a negative electrode and a positive electrode, each a porous coating on a metal foil.

Module

A group of cells connected in series and parallel, mechanically held together with its own voltage and temperature sensing, built as the unit from which a pack is assembled and serviced. Cell-to-pack designs do away with it.

Battery pack

The complete battery as installed: modules or cells, the BMS, contactors and fuses, busbars, cooling, sensors and an enclosure. Its energy is the sum of its cells’ energies; its mass and volume are a good deal more.

Pouch cell

A cell sealed in a flexible bag of aluminium laminated with plastic, holding stacked electrode sheets in larger cells or a flattened wound roll in many small ones. It is light and easy to cool, but needs outside support and can visibly swell if gas forms inside.

Prismatic cell

A cell in a rigid rectangular metal case, holding either a flattened jelly roll or stacked sheets. Large prismatic cells pack tightly into battery packs.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. DOE Explains… Batteries

   U.S. Department of Energy

   Topic background · Introductory account of electrodes, electrolyte and conversion between chemical and electrical energy.

2. Current and future lithium-ion battery manufacturing

   Yangtao Liu, Ruihan Zhang, Jun Wang, Yan Wang · iScience · 2021

   Topic background · Electrode preparation, cell assembly, formation and manufacturing trade-offs.