Battery pack

A battery pack, comprising:

• at least one battery module that comprises:
• a plurality of battery cells (BC), wherein each of the BCs comprises a positive electrode and a negative electrode, and wherein at least part of the electrodes of the BCs collectively define an electrode surface;
• at least one cell holder configured to limit the position of each of the BCs, comprising a plurality of cell receiving structures distributed along a lateral direction, wherein a part of a body of each of the BCs is disposed in a corresponding one of the cell receiving structures;
• at least one battery-cell-connecting member (BCCM) configured to electrically connect the electrodes of the BCs, wherein the BCCM is disposed on the cell holder and arranged on the electrode surface, and wherein the BCCM is mechanically engaged with the cell holder to limit a relative movement between the BCCM and the cell holder;
• a liquid-limiting casing (LLC) configured as a tubing structure, comprising:
• a peripheral wall that laterally surrounds a space and extends vertically from a first vertical end to a second vertical end, wherein the space is configured to accommodate the BCs, the at least one cell holder, and the at least one BCCM, and wherein the first and the second vertical ends of the peripheral wall define a first opening and a second opening respectively;
• and
• at least one mechanical interlocking structure disposed on the first or the second vertical ends of the LLC;
• wherein the LLC further comprises at least one module-wall-vertical-channel extending vertically within the peripheral wall;
• wherein the LLC further comprises at least one module-wall-lateral-channel extending laterally within the peripheral wall from the at least one module-wall-vertical-channel to the space, wherein the module-wall-lateral-channel fluidly connects the module-wall-vertical-channel to the space;
• wherein the first opening and the second opening are in liquid communication with the at least one module-wall-vertical-channel and the module-wall-lateral-channel;
• and
• at least one modular-electric-energy-interface (MEEI) electrically connected to the at least one BCCM;
• and
• two lid modules arranged at two opposite vertical ends of the at least one battery module, wherein the two lid modules comprise:
• at least one high-voltage interface connector (HVIC) configured to relay electrical energy of the battery pack to a downstream load;
• at least one interface liquid connector (ILC) configured to introduce a thermal-management liquid into or out of the battery pack;
• at least one lid interlocking structure configured to be mechanically engaged with the mechanical interlocking structure of the LLC to limit a relative displacement between the lid modules and the at least one battery module;
• at least one lid electrical interface electrically connected to the HVIC and the MEEI;
• and
• at least one lid liquid channel in fluid communication with the ILC, the first opening, and the second opening of the LLC;
• wherein the peripheral wall of the LLC of the at least one battery module and the two lid modules are vertically stacked and assembled to collectively form a liquid-tight battery-pack enclosure;
• wherein the liquid-tight battery-pack enclosure encloses a battery-pack space that is configured to accommodate the thermal management liquid such that the plurality of battery cells, the at least one cell holder, and the at least one BCCM are immersed in the thermal-management liquid;
• and
• wherein the battery pack defines a first fluid path and a second fluid path extending between the at least one ILC and the space, the first fluid path comprising the lid liquid channel and the first opening or the second opening of the LLC, and the second fluid path comprising the lid liquid channel, the first opening or the second opening of the LLC, the module-wall-vertical-channel, and the module-wall-lateral-channel.