US Patent 9437903 Method for cooling a lithium-ion battery pack

Systems are disclosed for battery modules with cooling systems. In accordance with disclosed embodiments, the cooling system may be disposed against an external surface of a housing of the battery module. The cooling system may utilize a coolant to remove heat generated by cells within the battery module, to prevent the cells from aging prematurely. Embodiments of the cooling system may include cold plates, tubes, fins, and plates, or a combination thereof, which may route the coolant along the surface of the battery module housing. Such features may create a large effective cooling surface against the battery module housing to promote a high heat transfer rate from the cells to the coolant.