Abstract: In the paper,the aluminum sheet is adopted as the back sheet material of PV modules. And the aluminum backplane modules are designed from the view of insulation safety,and the operating temperature. The results showed that the aluminum backplane modules have an insulation performance that meets the standard IEC61215-2021 after undergoing whole sheet isolation. With the remarkable heat dissipation performance of aluminum sheets,the experimental results are in good accordance with the theoretical simulation.