Thermal request mediating device for controlling allowable amounts of discharged heat for thermal circuits

A thermal request mediating device that is mounted in a vehicle including (i) a first thermal circuit configured to circulate a coolant for cooling a battery and (ii) a second thermal circuit configured to circulate a refrigerant for an air-conditioner while changing a state of the refrigerant and to exchange heat with the first thermal circuit, the thermal request mediating device comprising a processor programmed to:

• acquire a first requested amount of discharged heat and a second requested amount of discharged heat, the first requested amount of discharged heat being an amount of heat discharged per unit time which is requested to be discharged from the first thermal circuit to the second thermal circuit to reach a first target control temperature, and the second requested amount of discharged heat being an amount of heat discharged per unit time which is requested by the second thermal circuit to reach a second target control temperature;
• determine amounts of discharged heat allowable for the first thermal circuit and the second thermal circuit such that a sum of the first requested amount of discharged heat and the second requested amount of discharged heat does not exceed a maximum amount of dischargeable heat of the second thermal circuit;
• and
• increase the amount of discharged heat allowable for the first thermal circuit and decrease the amount of discharged heat allowable for the second thermal circuit as the first requested amount of discharged heat increases when the sum of the first requested amount of discharged heat and the second requested amount of discharged heat exceeds the maximum amount of dischargeable heat.