This technology retains the original conductive tape process, stacks and welds half-cut cells with negative spacing, and combines it with the development of cushioning materials, so that the industry can directly import the existing string welding equipment and upgrade to produce shingled modules. The efficiency of shingled modules is 0.5% more than conventional modules. Therefore, TOPCon solar cells combined with shingled module technology can increase the efficiency by 2% (1.5%+0.5%), and the capacity of the device can be increased by 9.8% under the same area (the efficiency of TOPCon shingled module is 22.5%), coupled with the actual test, the same capacity of TOPCon can generate 6% more electricity than that of PERC, such as TOPCon shingled modules. If TOPCon shingled module is used to replace the traditional PERC module, 15.8% (9.8%+6%) more green electricity can be generated under the same area.