There is a close connection between the Battery Thermal Management System (BTMS) and the direct cooler. Especially in the fields of electric vehicles and energy storage systems, the direct cooler is often utilized as one of the core technologies for achieving efficient battery thermal management.
Direct cooling technology is a method that utilizes liquid to directly contact the heat source for heat exchange. The direct cooler is a product developed based on this technology. It can directly cool the battery module, offering faster cooling speeds and more precise temperature control compared to traditional air or liquid cooling methods.
The battery thermal management system primarily controls the temperature of the battery pack, keeping it within the optimal operating range to ensure normal operation and extend battery life. This direct cooling machine, independently developed by KOMEG, is designed for testing battery thermal management systems in new energy electric vehicles and energy storage industries.
The system conducts refrigeration capacity tests under various working conditions, along with refrigerant inlet and outlet supercooling/superheating tests and refrigerant circulation mass flow tests. Based on the monitored data, it displays the current cooling and heating capacities in real time, allowing for the assessment of the thermal load on the battery module under current conditions. This provides reliable data support for the further development of direct cooling units for battery thermal management.
This battery thermal management direct cooling machine test system comprises a cooling water constant temperature system and a thermal management direct cooling machine test system.
Cooling Water Constant Temperature System: This system provides stable cooling water to the direct cooling machine, ensuring a constant flow and temperature. This helps avoid fluctuations in condensation pressure during testing, thereby ensuring data accuracy.
Thermal Management Direct Cooling Machine Test System: This system measures the pressure and temperature of the refrigerant at the inlet and outlet of the battery cold plate. The enthalpy values at both ports are calculated, while the refrigerant mass flow rate is measured in the liquid pipe section. Ultimately, this allows for the real-time calculation of the heat load during the charging and discharging of the battery module.
The KOMEG battery thermal management direct cooling machine features six modes: cooling mode, heating mode, pressure holding mode, vacuum mode, refrigerant filling mode, and refrigerant recovery mode.
Under normal temperature conditions, the battery core heats up due to internal resistance during charging or discharging. The cooling mode effectively dissipates the heat generated by the battery core, helping to avoid thermal runaway. In low temperature conditions, lithium ion activity decreases, impacting the battery’s efficiency and performance. The heating mode preheats the battery core to enhance operation. Once the pipeline is connected, the pressure holding mode allows for measurement of the entire circuit’s air tightness, preventing leaks after refrigerant introduction. The automatic refrigerant filling and recovery functions are user-friendly and minimize refrigerant loss.
For more details about the KOMEG direct cooling machine, please feel free to contact us.