A low-temperature intelligent pulse heating circuit for power batteries, a
power battery, and an automobile are disclosed, relating to the field of
new energy vehicles. The circuit includes: a first
relay, an
inductor, a first switching
transistor, and a second switching
transistor. The first and second switching transistors have parasitic diodes with reverse conduction, or the switching transistors include a switch body and a
diode connected in reverse parallel with the switch body. One end of the
inductor is connected to the common terminal of the first and second battery packs, and the other end of the
inductor is connected to the common terminal of the first and second switching transistors. The other ends of the first and second switching transistors are respectively connected to the other ends of the first and second battery packs. The
branch formed by the first and second switching transistors is connected in parallel with the vehicle's
bus capacitor. This circuit provides a reliable hardware foundation for achieving rapid and uniform heating of the
battery pack.