Heat management system and electrified vehicle

A heat management system provided in an electrical apparatus, the heat management system comprising:

• a first channel, a second channel, a third channel, and a fourth channel configured such that a heat medium is allowed to flow through the first channel, the second channel, the third channel, and the fourth channel;
• a battery configured to exchange heat with the heat medium in the first channel;
• a drive unit configured to exchange heat with the heat medium in the second channel and be capable of generating driving force;
• a radiator provided in the third channel;
• a chiller device provided in the fourth channel;
• and
• a switching unit configured to be capable of switching a connection status among the first channel, the second channel, the third channel, and the fourth channel, wherein:
• a channel circuit in which the battery, the drive unit, the radiator, and the chiller device are isolated and independent of one another is defined as a heating circuit;
• wherein when the battery is heated by passing current through the battery, the switching unit is configured to form the heating circuit, and
• a processor that is configured to control a current flowing through the battery, wherein the processor is configured to control the switching unit such that a connection among the first channel, the second channel, the third channel and the fourth channel is disconnected when the battery is heated by passing current through the battery.