Modular battery system including tab-free bipolar modules

A modular bipolar solid-state battery comprising:

• T solid-state battery modules, wherein each of the T solid-state battery modules includes an enclosure, a first terminal arranged on a first side of the enclosure, a second terminal arranged on a second side of the enclosure opposite to the first side of the enclosure, and N solid-state battery cells arranged and interconnected in the enclosure, where N is an integer greater than one,
• wherein the enclosure of each solid-state battery module of the T solid-state battery modules includes N vent holes, each vent hole of the N vent holes is arranged to correspond to a solid-state battery cell of the N solid-state battery cells in that enclosure, and each vent hole of the N vent holes is configured to receive and distribute electrolyte into the corresponding solid-state battery cell, and allow gas to escape,
• wherein the first terminal of each solid-state battery module of the T solid-state battery modules comprises a first rectangular plate and the second terminal of each solid-state battery module of the T solid-state battery modules comprises a second rectangular plate,
• wherein the first rectangular plate of a first solid-state battery module of the T solid-state battery modules comprises a projection and the second rectangular plate of a second solid-state battery module of the T solid-state battery modules comprises a recess that mates with the projection of the first solid-state battery module to make an electrical connection between the first solid-state battery module and the second solid-state battery module,
• wherein each of the N solid-state battery cells comprises M solid-state cores each comprising a first current collector, cathode active material, a separator, anode active material, and a second current collector, where M is an integer greater than one, wherein the M solid-state cores are connected in parallel by connecting the first current collectors of the M solid-state cores in each of the N solid-state battery cells together and by connecting the second current collectors of the M solid-state cores in each of the N solid-state battery cells together;
• and N−1 clad plates including a first side made of a first material and a second side made of a second material,
• wherein the N−1 clad plates are arranged between adjacent solid-state battery cells ones of the N solid-state battery cells and the N solid-state battery cells are connected in series by the N−1 clad plates, and
• wherein the T solid-state battery modules are connected in series in a plurality of rows and the plurality of rows are connected together in at least one of series and parallel;
• a positive terminal of the modular bipolar solid-state battery is-connected to at least a first one of the T solid-state battery modules;
• and
• a negative terminal of the modular bipolar solid-state battery is-connected to at least a second one of the T solid-state battery modules.