The invention belongs to the technical field of automobiles, particularly relates to a
lithium battery system, and further relates to a control method of a
lithium battery and a vehicle. The
lithium battery system for the vehicle comprises a
lithium battery pack for providing power for a vehicle, an energy dissipation unit connected in parallel with the
lithium battery pack, a heating unit connected in parallel with the
lithium battery pack and the energy dissipation unit, and a battery
management unit, the battery
management unit is electrically connected with the energy dissipation unit anda
control switch, the battery
management unit is used for monitoring the temperature of the lithium
battery system and the current of the lithium battery
system and calculating the electric quantity state of the lithium
battery pack, and the battery management unit can control the energy dissipation unit and the heating unit to be turned on or off through the
control switch. The lithium battery
system provided by the invention adopts the battery management unit to detect, control and recover the feedback current of the vehicle, so that the safety of the battery
system and the whole vehicle isensured, and the efficient utilization of energy is realized.