Research on thermal characterization of liquid cooling plate topology for lithium-ion batteries
In order to enhance the cooling capacity of the conventional liquid-cooled plate,a new topological runner liquid-cooled plate with two different inlet and outlet positions,namely,centering and diagonal,was designed by using the variable density topology optimization method.The effect of coolant volume fraction and inlet temperature on thermal performance was explored by global partial differential equations to make the pumping power of each liquid-cooled plate consistent.Simulation results showed that increasing the coolant volume fraction enhanced the liquid-cooled plate heat dissipation capability,while the inlet temperature had a weak effect on the cell body temperature difference;the diagonal topology liquid-cooled panels showed the greatest improvement in cooling performance over the serpentine liquid-cooled panels,with the highest decrease in cell body temperature difference of 37.84%when the pumping power was increased from 1×10-4 W to 5×10-4 W,and the integrated heat transfer index PEC was about three times higher than that of the diagonal topology over the momentary liquid-cooled panels.
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