Classification And Introduction of Thermal Management System for New Energy Vehicles-4

Different thermal management systems have different component types, different weights, different system costs, and different control methods, which result in different system performances. There are five main categories:

4. Air cooling/water cooling mixed cooling system

There are two key components in the air-cooled/water-cooled hybrid cooling system:

1) Water-cooled battery cooler;

2) Air-cooled battery radiator.

The air-cooled/water-cooled hybrid cooling system has the advantages of compact system, good performance and economic energy saving in low temperature environment. However, this system is complex, costly, complex to control and has high reliability requirements.

Advantages:

Efficient heat dissipation: Combining the advantages of air cooling and water cooling, air cooling is used for low heat load, water cooling is used for high heat load, and the overall heat dissipation efficiency is high.

Energy saving and environmental protection: Use air cooling at low load to reduce the energy consumption of water pumps and coolants, and reduce operating costs.

Flexible: The cooling method can be dynamically adjusted according to the heat load to adapt to different working conditions.

Compact structure: Compared with the pure water cooling system, the hybrid cooling system can reduce some water cooling components and save space.

Disadvantages:

Complex system: It is necessary to integrate both air cooling and water cooling systems at the same time, which increases the difficulty of design and maintenance.

High cost: The initial investment and operating costs are higher than a single cooling system.

Difficult to control: It is necessary to accurately control the switching of air cooling and water cooling, and the control system has high requirements.

Increase in potential failure points: The combination of the two cooling systems may increase the risk of failure.

Recommend Materials：modified PA

Recommended modified PA material types

1. Glass fiber reinforced PA (PA+GF)

Features: high strength, high rigidity, good heat resistance.

Applicable parts: fan bracket, water pump housing, structural support parts and other parts that require high strength and rigidity.

2. Hydrolysis-resistant PA

Features: by adding hydrolysis stabilizer, the hydrolysis resistance is significantly improved.

Applicable parts: pipe joints, seals, coolant tanks and other parts in water cooling system that are in contact with water for a long time.

3. Flame retardant PA (PA+FR)

Features: adding flame retardant to meet UL94 V-0 and other flame retardant standards.

Applicable parts: housings, connectors, controllers and other parts in electronic and electrical cooling systems that require flame retardant properties.

4. Carbon fiber reinforced PA (PA+CF)

Features: ultra-high strength, high rigidity, excellent heat resistance and conductivity.

Applicable parts: lightweight structural parts, heat sink brackets, etc. in high-performance cooling systems.