High-temperature-resistant circuit board of automobile power supply

The utility model discloses a high-temperature-resistant circuit board of an automobile power supply, and particularly relates to the field of automobile power supplies, the high-temperature-resistant circuit board of the automobile power supply comprises a protection box, a display panel and a state indicator lamp are arranged on the front surface of the protection box, an air inlet grid and a screen are arranged on the two sides of the protection box respectively, and a cleaning device is arranged on one side of the protection box. And the cleaning device comprises two guide strips, one faces of the guide strips are fixedly connected with the protection box, the two guide strips are located on the upper side and the lower side of the air inlet grid correspondingly, the surfaces of the two guide strips are both slidably connected with mounting bases, and one ends of the mounting bases are fixedly connected with mounting plates. By the aid of the air inlet grid structure, after an automobile power supply is u