Back contact solar cell and solar cell component

The invention discloses a back contact solar cell, including an n type silicon substrate, a P + doped region, an N + doped region, a passivation and anti-reflection layer, a positive electrode fine grid and a negative electrode fine grid as well as a positive electrode wire and a negative electrode wire. The positive electrode wire is arranged in the positive electrode fine grid the negative electrode fine grid. The contact part between the positive electrode wire and positive electrode fine grid is provided with a conductive material. The positive electrode wire at the contact part between the positive electrode wire and the negative electrode fine grid is wrapped with an insulating material. The negative electrode wire is arranged in the positive electrode fine grid and negative electrode fine grid. The contact part between the negative electrode wire and negative electrode fine grid is provided with a conductive material. The negative electrode wire at the contact part between the negative electrode wire and the positive electrode fine grid is wrapped with an insulating material. The back contact solar cell can reduce the influence of the fine grid on resistance, reduce the use amount of silver paste, increase the filling factor, and reduce the shielding effect of the back metal on the back of the incident light.