BATTERY PACK SYSTEM WITH SURFACE PRESSURE DISTRIBUTION STRUCTURE FOR BATTERY CELLS

A battery pack system features a base plate, transverse members, and at least three upward-extending longitudinal members that partition the base plate's surface into a lattice. Battery modules containing battery cells are installed in the resulting lattice-shaped spaces and coupled to seating portions at each intersection. Each longitudinal member includes a surface pressure block positioned between two fixing units, pushing the modules on both sides toward these fixing units for secure retention.