Automobile battery heater

The invention discloses an automobile battery heater which comprises a heater body, wherein the heater body comprises a first heating chip set; the first heating chip set comprises a first heating chip and a protective layer; the protective layer is arranged outside the first heating chip; a second heating chip set is arranged outside the first heating chip set; the second heating chip set comprises second heating chips; an epoxy plate is arranged outside the second heating chip set; a reinforcing layer is arranged outside the epoxy plate; and an acrylic rubber layer is arranged outside the reinforcing layer. According to the automobile battery heater disclosed by the invention, the whole heater adopts a composite structure, the second heating chips penetrate through the first heating chipset, the epoxy plate, the reinforcing layer, the acrylic rubber layer and a PI pure rubber film are laid outside the first heating chip and the second heating chips, and conditions such as layering and the like are avoided d