A battery temperature regulating device comprising: a battery module; a temperature detection means for detecting a temperature of the battery module; a battery temperature regulating means for adjusting the temperature of the battery module; and a battery pack case for housing the battery module and the battery temperature regulating means, wherein, the battery pack case comprises: a vent which allows the passage of gas from inside the battery pack case to the outside, wherein the battery temperature regulating means is configured comprising: a cooling heat exchanger for cooling the air that passes through; a condensed water reservoir for storing condensed water that is generated in the cooling heat exchanger; and an air blowing means for blowing the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulating the same within the battery pack case, wherein the battery temperature regulating means is configured to cool the air that passes through with the cooling heat exchanger, drive the air blowing means to execute the cooling of the battery module when the temperature of the battery module detected by the temperature detection means is higher than a predetermined temperature which is set in advance, drive only the air blowing means regardless of the temperature of the battery module which is detected by the temperature detection means, at a predetermined timing after the execution of the cooling of the battery module is completed, and set the drive output of the air blowing means of when driving at the predetermined timing lower than the drive output of the air blowing means of when executing cooling of the battery module. a battery module; a temperature detection means for detecting a temperature of the battery module; a battery temperature regulating means for adjusting the temperature of the battery module; and a battery pack case for housing the battery module and the battery temperature regulating means, wherein, the battery pack case comprises: a vent which allows the passage of gas from inside the battery pack case to the outside, wherein the battery temperature regulating means is configured comprising: a cooling heat exchanger for cooling the air that passes through; a condensed water reservoir for storing condensed water that is generated in the cooling heat exchanger; and an air blowing means for blowing the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulating the same within the battery pack case, wherein a cooling heat exchanger for cooling the air that passes through; a condensed water reservoir for storing condensed water that is generated in the cooling heat exchanger; and an air blowing means for blowing the air in the vicinity of the cooling heat exchanger and the condensed water reservoir and circulating the same within the battery pack case, wherein the battery temperature regulating means is configured to cool the air that passes through with the cooling heat exchanger, drive the air blowing means to execute the cooling of the battery module when the temperature of the battery module detected by the temperature detection means is higher than a predetermined temperature which is set in advance, drive only the air blowing means regardless of the temperature of the battery module which is detected by the temperature detection means, at a predetermined timing after the execution of the cooling of the battery module is completed, and set the drive output of the air blowing means of when driving at the predetermined timing lower than the drive output of the air blowing means of when executing cooling of the battery module. cool the air that passes through with the cooling heat exchanger, drive the air blowing means to execute the cooling of the battery module when the temperature of the battery module detected by the temperature detection means is higher than a predetermined temperature which is set in advance, drive only the air blowing means regardless of the temperature of the battery module which is detected by the temperature detection means, at a predetermined timing after the execution of the cooling of the battery module is completed, and set the drive output of the air blowing means of when driving at the predetermined timing lower than the drive output of the air blowing means of when executing cooling of the battery module.