Water heater with semicircular solar cell for power generation

The invention relates to a water heater with a semicircular solar cell for power generation. A water tank, a water heater support and a water heater bracket are mechanically connected; the water heater bracket, a pipe pad, a hot water pipe with a solar cell for power generation, a seal rubber pad and a water tank pipe orifice are mechanically connected; the inner wall of a vacuum pipe is welded with the outer wall of the vacuum pipe through a vacuum pipe insulation and spacing body after air is emptied; the inner wall of the vacuum pipe is provided a semicircular solar cell; an upper electrode and a lower electrode of the cell are electrically connected with an upper wire holder and a lower wire holder on the outer wall of the vacuum pipe, connect multiple upper and lower electrode seats in series/parallel, and then are electrically connected with a program-controlled inversion power supply; the program-controlled inversion powder supply is electrically connected with household appliances and a power company electric network; and a hot water outlet of the water tank is electrically connected with an indoor shower and the hot water pipe. When the water heater with the solar cell for power generation works, the cell converts about 15% of solar energy into electric energy, and uses the other about 85% of solar radiant heat energy for heating hot water, thereby reducing the working temperature of the solar cell and improving the photoelectric conversion rate; and the remaining electric energy can be sold to the power company.