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Introduction to Commercial Vehicle Water-cooled Units and Battery Thermal Management Systems (BTMS)
Water-cooled Unit Working Principle
The water-cooled unit for commercial vehicles operates on the principle of using coolant as the medium to absorb heat from the batteries. This system includes key components such as compressors, evaporators, condensers, expansion valves, and plate heat exchangers. By regulating the temperature and flow rate of the coolant, the system effectively manages the thermal performance of the batteries. This technology leverages the superior thermal conductivity of water compared to air, ensuring more efficient heat transfer and better performance.
Applications in Commercial Vehicles
Water-cooled units are widely used in various types of commercial vehicles, including:
- Electric buses
- Electric construction machinery
- Electric trucks
- Electric heavy-duty vehicles
- Energy storage stations
These applications benefit from the advanced thermal management capabilities of water-cooled units, which are essential for maintaining optimal operating conditions in high-performance and heavy-duty scenarios.
Importance of Water-cooled Units in Commercial Vehicles
The primary role of water-cooled units is to ensure that batteries, motors, and electronic control systems operate within a safe and efficient temperature range. By maintaining optimal temperatures, these units significantly extend battery life, enhance vehicle performance, and improve overall operational efficiency. This is crucial for commercial vehicles, which often face demanding operational conditions and require reliable thermal management solutions to maximize uptime and reduce maintenance costs.
Development History
The evolution of water-cooled units has been marked by continuous innovation and adaptation to modern requirements. Initially, simple radiators were used for basic cooling purposes. Over time, advancements in materials and technology have led to more efficient cooling systems. The integration of intelligent control systems has further enhanced performance, allowing for precise temperature management and energy optimization. Additionally, stricter environmental regulations have driven the development of more sustainable and energy-efficient water-cooled solutions.
Conclusion
The water-cooled unit is a critical component in the thermal management of commercial vehicles, especially in the context of battery electric vehicles (BEVs). Its ability to maintain optimal temperatures for batteries and other key components ensures high performance, reliability, and longevity. As the demand for electric commercial vehicles grows, the importance of advanced water-cooled units will continue to increase, driven by technological advancements and environmental considerations.
Function implementation:
1. Configurable PTC liquid heater with standby, cooling, heating, and self circulating working modes;
2. Can achieve network control;
3. Adopt CAN2.0 communication;
4. Equipped with self diagnostic function for unit faults;
5. Real time uploading of power information;
6. EMC meets Level III requirements;
7. The weight of the unit is 68kg ± 2kg.
| Unit Model |
NBSLJZ-10-01 |
| Rated cooling capacity（kw） |
10 |
| Heating capacity |
24KW(Optional） |
| High voltage power supply |
640VDC (400~750 VDC) |
| Built in water pump |
17.5m&2880l/h |
| Control power supply |
DC24V battery provides on/off signal |
| Protection level |
IPX7 |
| Refrigerant |
134a |
| Type of secondary refrigerant |
50%VV Ethylene glycol aqueous solution |
| Dimensions |
960（L）*603（W）*291（H） |
| Unit fixed point |
521mm*320mm Φ12holes *6 |
| Joint |
Inlet and outlet water pipeΦ25（Reserved overflow pipeΦ8） |
| Connector |
can be configured according to customer needs |
| Electronic control |
Four in one/Three in one integrated |
