What is the cooling system of electric vehicles? Introduction of electric vehicle cooling system.

Introduction: What is the cooling system of electric vehicles? Introduction of electric vehicle cooling system.

I believe many friends know that our cooling system is one of the core technologies of our electric vehicles. Compared with traditional fuel vehicles, the heat dissipation performance of electric vehicles has become particularly important due to the addition of large heating components (batteries, motors, controllers, chargers, etc.). If our electric car overheats, it will be damaged. Learn about the cooling system of electric vehicles with me.

Brief introduction of electric vehicle cooling system: brief introduction

Therefore, it is quite common to use water cooling for stator windings at present. Water is a good cooling medium, with great specific heat and thermal conductivity, low price, no toxicity, no combustion-supporting and no explosion danger. The cooling effect of water cooling module is extremely remarkable, and the allowable electromagnetic load is much higher than that of air cooling, which improves the utilization rate of materials. However, water joints and sealing points are in danger of short circuit, electric leakage and insulation burning due to water pressure leakage.

Introduction of electric vehicle cooling system: cooling mode

Air cooling has the simplest structure, the lowest cost and the most convenient maintenance, and intensive cooling is often used. To strengthen cooling, it is necessary to increase ventilation, which will inevitably lead to an increase in ventilation loss, thus reducing the efficiency of the motor. In addition, the temperature rise of air-cooled stator and rotor windings is also very high, which affects the insulation life.

Therefore, it is quite common to use water cooling for stator windings at present. Water is a good cooling medium, with great specific heat and thermal conductivity, low price, no toxicity, no combustion-supporting and no explosion danger. The cooling effect of water cooling module is extremely remarkable, and the allowable electromagnetic load is much higher than that of air cooling, which improves the utilization rate of materials. However, water joints and sealing points are in danger of short circuit, electric leakage and insulation burning due to water pressure leakage. Therefore, water-cooled motors have strict requirements on the sealing and corrosion resistance of waterways, and antifreeze must be added in winter, otherwise it will easily cause maintenance accidents. In the design of electric vehicle motor, the water channel can let the coolant contact every place on the inner surface of the motor, and the flow direction is designed to let the coolant take away the heat of the parts that are most prone to thermal failure, so the design needs special consideration.

In view of some defects in water cooling mode, some companies independently designed an oil cooling system. Because of the insulation of cooling oil, it can go deep into the rotor and stator windings of the motor for more complete heat exchange, and the cooling effect is better. But because of this, the cooling oil needs to be strictly filtered, the oil circuit needs to be strictly cleaned, and impurities and metal chips should be prevented from being brought into the moving parts of the motor to avoid accidents.

Brief introduction of electric vehicle cooling system: brief introduction

The utility model exchanges the heat of the whole vehicle system with the outside air through the cooling system, so as to better protect the performance and service life of electrical components for electric vehicles. Through the vehicle cooling system of the utility model, the electrical components of the electric vehicle can be ensured to work in the optimal temperature range, especially the discharge power of the power battery is obviously affected by the environmental temperature. It can ensure that the temperature difference inside the power battery is smaller than that of the traditional air-cooled system.

Well, that's all for my introduction today. From the above article, we can see that the cooling system of electric vehicles I introduced is still very helpful to our electric vehicles, and its role is also very powerful, that is, to protect the performance and life of electrical components used in electric vehicles. I hope my introduction today can help you.

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