The Importance Of Thermal Management In Electric Vehicles
Trends in the automotive market suggest that electric vehicles are now widely replacing gas-powered vehicles. However, when the concept of electric vehicles was first proposed in the 19th century, it encountered many problems and hindered the development of the electric vehicle industry. With the impact of climate warming in recent years, more and more countries began to issue relevant policies. to promote the use of electric vehicles. And there are persistent concerns about thermal management in electric vehicles.
Why is thermal management system important for electric vehicles?
In electric vehicles, thermal management concerns mainly exist in the cooling of battery packs, electronic power systems, and electric motors. Since the electronic components require more power during use, a more efficient cooling method is required to cool the electronic components systematically. Improper handling can greatly affect the overall performance of the vehicle. Generally speaking, in order to maintain a stable operation of electric vehicles, it is necessary to maintain the power components in a stable temperature range (generally 20-25 ℃), and the most important problem faced by electric vehicles is the battery pack temperature, which will directly affect the battery life and charging and discharging performance. Heat conduction is the most widely used and effective cooling method at present. At present, the most well-known electric car Tesla uses liquid cooling for battery cooling.
How does temperature affect the performance of electric vehicles?
The impact of ambient temperature on electric vehicles is the most direct, affecting the efficiency of electric vehicles. As research has shown, the extreme high/low the temperature, the lower the efficiency of the battery.
Cold weather will temporarily reduce the utilization efficiency of EV batteries. According to AAA data, using an electric vehicle in a temperature range below 20 degrees Celsius will only reduce the battery life by 10%-30%, but turn on the air conditioner to heat the car. , then the cruising range can be reduced by 41%. In the case of high temperature of 35 ℃, when the vehicle is running and the air conditioner is turned on, the mileage is only reduced by 17%. The relatively cold winter does not seem to have such a big impact.
Another issue that consumers are most concerned about is the charging time of the vehicle, and whether fast charging is currently available is also a great selling point. Fast charging means injecting extremely high energy into the battery in a short period of time. While injecting energy, it will also generate corresponding heat. If this heat is not dissipated in time, it will greatly affect the materials inside the battery, resulting in increased charging time.
How do electric vehicle batteries heat or cool?
In the electric vehicle system, the cooling circuit is used to cool and heat the electronic components in it accordingly. This cooling system can automatically adjust to maintain the temperature within a reasonable range, adapting to the external and internal temperature conditions. Just like the water cooling plates provided by Trumonytechs, a coolant circulation system is used to effectively dissipate heat from the car battery, releasing the heat into the air through the circulating coolant. This is a more efficient way to dissipate heat than air cooling.
Design with Simulation
When designing an electric vehicle cooling scheme, various factors need to be considered. In practical applications, it may take a lot of time to debug the system. Trumonytechs has done a more efficient approach to this situation, we have greatly reduced time testing and other costs by building simulation models.
Trumonytechs Electric Vehicle Thermal Management Solutions
As a professional service provider of thermal management solutions for electric vehicles, Trumonytechs has a complete prototype design and processing center. Based on the R&D team of Shanghai Jiaotong University, we propose more efficient solutions for thermal management of electric vehicles. At present, a number of enterprise thermal management solutions have been customized.