A electric vehicle battery thermal regulation system configured to prioritize a flow of cooling fluid past at least one of a battery cell experiencing a thermal event, including a plurality of conduits through which a flow of thermal regulation fluid can flow, portions of the thermal regulation system positioned in close proximity to the at least one of a plurality of battery cells to provide cooling to said plurality of battery cells, wherein the thermal regulation system includes one or more bi-material valves configured to at least one of open or close in response to a change in temperature of the thermal regulation fluid, thereby rerouting a flow of the thermal regulation fluid through the plurality of conduits to prioritize cooling to one or more battery cells experiencing a thermal event.