Effectiveness of aluminum foam length on the heat dissipation system of new energy vehicles
In the heat dissipation system of new energy vehicles, the air-cooling cooling method utilizes the outside air to exchange the heat in the battery compartment to achieve the purpose of heat dissipation. In the battery compartment, the heat exchange between the air at the back and the battery at the front of the compartment will increase the temperature at the back of the compartment, which will reduce the heat dissipation ability at the back of the compartment. Therefore, from the above analysis, we can understand that the heat dissipation effect at the back of the battery compartment is weaker than that at the front of the compartment, and therefore the temperature of the batteries at the back of the compartment is higher than that in the front of the compartment, and by clarifying the above, the aluminum foam is filled into the back of the battery compartment, so as to enhance the heat dissipation purpose. aluminum into the rear of the battery compartment, so as to enhance the heat dissipation performance of the rear of the battery compartment and reduce the battery temperature in the rear of the compartment [3]. In order to make a more in-depth comparison, it needs to be divided according to five scenarios, and then observe the heat dissipation effect of the battery compartment in these five scenarios, so as to clarify the effect of aluminum foam on the heat dissipation system of the new energy vehicle. The first scenario is that the battery compartment is not filled with foam metal, the second scenario is that the rear of the battery compartment is filled with aluminum foam equal to one-quarter of the length of the lithium-ion battery pack, the third scenario is that the rear of the battery compartment is filled with aluminum foam equal to half of the length of the lithium-ion battery pack, and the fourth scenario is that the rear of the battery compartment is filled with aluminum foam equal to three-quarters of the length of the lithium-ion battery pack, and the fifth scenario is that the rear of the battery compartment is filled with aluminum foam equal to three-quarters of the length of the lithium-ion battery pack. The fifth scenario is to fill the rear of the battery compartment with aluminum foam of the same length as the lithium-ion battery pack. Through the above five scenarios, we can compare the heat dissipation effect of different lengths of aluminum foam in the battery compartment of new energy vehicles. Through the computer software to simulate the temperature difference between the lithium-ion battery of the new energy vehicle under the condition of different external ambient temperatures, the maximum value of temperature difference and the highest value of temperature, the lithium-ion battery pack is discharged as 70A, the discharge rate of 1C, in the filling of the aluminum foam, it is necessary to determine the porosity of the pore ratio is set to 0.95, and the new energy vehicle heat dissipation system is set to the inlet wind speed of 3 meters per second.