21/10/2026
The module is disappearing, and what replaces it is a system problem.
Cell-to-pack and cell-to-body architectures remove an entire integration layer from the battery. The efficiency gain is obvious: more energy in the same volume, fewer components, lower cost per kWh.
The engineering consequences are less obvious, and they don't stay inside the pack.
👉 BMS: with no module-level electronics, cell monitoring and balancing move directly onto pack-level architectures. Wiring, sensing topology and diagnostics all have to be rethought.
👉 Safety containment: propagation paths change. A thermal event no longer stops at a module boundary, because there is no module boundary.
👉 Serviceability: a single failed cell in a structural pack is not a repair. It's a redesign of the maintenance concept.
Removing the module is not a simplification. It's a redistribution of complexity across the rest of the system. The question is no longer "how do we build a better module". It's "which functions previously handled by the module do we now need to handle somewhere else — and how".
Rethinking your battery architecture beyond the module? BeonD can help you address the engineering challenges that come next!
BeonD is part of CSI S.p.A., a company of the IMQ Group.
