Battery temperature raising system and control method thereof

摘要

A battery temperature raising system and a control method thereof are provided. The battery temperature raising system includes a power supply that operates a heater attached to a battery module. The heater is configured to increase a battery temperature and a variable resistor mounted on a circuit between the heater and the power supply adjusts a heating value of the heater based on an adjustment state of a resistance value. A heater relay is mounted on the circuit between the heater and the power supply and opens and closes the circuit to selectively turn on/off the heater. A first sensor senses the battery temperature and a second sensor senses a heater temperature. A controller outputs a control signal to operate the heater relay to selectively turn on/off the heater based on temperature information sensed by the sensors and a control signal to adjust the resistance value of the variable resistor.

主权项

1. A battery temperature raising system, comprising:
a power supply configured to operate a heater, a heater disposed on a battery module and configured to increase a battery temperature by a heating operation; a variable resistor disposed on a circuit between the heater and the power supply and configured to adjust a heating value of the heater based on an adjusted resistance value of the variable resistor, by an operator; a heat relay mounted on the circuit between the heater and the power supply and configured to open and close the circuit to selectively turn the heater on and off; a first sensor configured to sense the battery temperature; a second sensor configured to sense a heater temperature; and a controller configured to output a control signal to adjust the resistance value of the variable resistor based on deviation between the battery temperature and the heater temperature, wherein the controller is set to decrease the resistance value of the variable resistor, in response to determining that deviation between the heater temperature and the battery temperature is equal to or less than a predetermined temperature deviation by comparing the deviation between the heater temperature and the battery temperature with the predetermined temperature deviation during the resistance value adjusting process.