China's new energy vehicles, why can't they fight Tesla? Autonomous core electronic control system is critical
With the development of the times, new energy vehicles have been more and more recognized by the majority of people, but in fact, new energy vehicles are very different from traditional cars, especially in the power control system. For new energy vehicles, gasoline is changed to electric energy, internal combustion engines become electric motors, and gearboxes and rotating devices are also changed to electronic control systems. Therefore, we can see that the factors that control the power performance of new energy vehicles are nothing more than three aspects, batteries, motors, and electronic control systems, so do you understand the motor system?
First of all, the electronic control system refers to the device that controls the movement of the motor, and it also directly promotes the climbing, acceleration and maximum speed of the pure electric vehicle. The electronic control system of new energy vehicles is mainly composed of inverters, drives, power supplies, modules, controllers and other aspects. In the same way, the inverter and controller are the core components of the electronic control system.
The controller can be said to be the brain of the electronic control system, which can not only realize data detection, but also provide algorithms. With the continuous development of the times, the mainland has been very mature in the technical field of the controller, but in the field of inverters, the mainland market share is seriously insufficient, and it can even be said that it is heavily dependent on foreign products and services.
The inverter mainly refers to the stage of converting the direct current output of the battery into three-phase ALTERNA, which is mainly composed of IGBT power modules. According to the voltage level, it is divided into low voltage, medium voltage and high voltage. Among these voltages, low voltage is mainly used for low power consumption of electronic rate, high voltage is mainly used in the field of smart grid, and medium voltage is mainly used in indispensable components of new energy vehicles. From this, we can see that the inverter has become the second largest component in new energy vehicles, after the battery.
As we all know, if you want to improve the endurance of the car, in addition to the battery capacity, you need to improve the power conversion rate. The inverter is to convert the direct current in the battery to alternating current. In this process, there is a lot of energy loss. It is reported that the inverter efficiency of Tesla Model S is 82%, which is very high in the market, but in fact, Tesla is not only this. Instead, it is joint with other countries to continue research and development, and finally increase the efficiency of the inverter from 82% to 90% of the model 3, and the endurance is significantly improved.
Tesla's high-profile development, so that new energy vehicles become a river of blood, the mainland new energy vehicles must accelerate the pace of advancement, China's auto independent brands want to harvest the favor of capital and the market, must withstand the pressure of Tesla, from the two aspects of technological innovation and product quality to kill a blood road.