What are the reasons for the excessive motor temperature in the BAIC EX360?
2 Answers
Below are the reasons for the excessive motor temperature in the BAIC EX360: 1. Instantaneous voltage issue: When the motor's instantaneous voltage exceeds 10% above the rated voltage or falls below 5% of the rated voltage, it will cause the motor to heat up and experience a temperature rise under rated load. In such cases, the voltage should be checked and adjusted. 2. Power supply voltage issue: An imbalance in the three-phase power supply voltage of the motor can also cause the motor to overheat. This is because when the three-phase power supply voltage imbalance exceeds 5%, it leads to an imbalance in the three-phase current. The solution is to check and adjust the voltage. 3. Switch and circuit issues: Contact problems in the motor's power switch or a blown fuse in one phase can result in single-phase operation, leading to an increase in motor temperature. The solution is to repair or replace the damaged components.
I've encountered the issue of excessive motor temperature while driving the BAIC EX360 several times, mainly caused by an inefficient cooling system. Problems like a stuck or slow-running cooling fan prevent heat dissipation; insufficient or degraded coolant, as well as blocked internal motor cooling channels, can also lead to temperature rise. Aggressive driving behaviors, such as frequent hard acceleration or climbing long slopes, significantly increase motor load and naturally generate more heat. Additionally, faults in the vehicle's battery management system might affect temperature monitoring, with software misjudgments failing to initiate timely cooling. Prolonged neglect of these issues can burn out motor windings or even cause system overheating shutdowns. It's advisable to first check if the fan is operating and inspect the coolant reservoir level yourself. If the problem persists, seek professional repair promptly—have a specialist shop use diagnostic tools to read fault codes and adjust the system.
