Text/Peach Lee
The development of new energy vehicles to today, no matter how it changes, the most basic and core part is still the three-electric technology, that is, battery, electric drive, electronic control. As consumers, we may know more about the two parts of the battery and the electric drive, after all, these two parts discuss more topics, and the electronic control is too low to make people notice its existence. So what is an electronic control system? Is it worth our attention?
Regarding the electronic control system, it is not actually exclusive to new energy electric vehicles, and there are also fuel vehicles, but the electronic control system of new energy electric vehicles is more complex and more powerful. As one of the three electric technologies, the electronic control system is certainly worthy of our attention, in simple terms, if the motor, battery is related to whether the new energy electric vehicle can run, how far can it run, then the electronic control system is related to how the vehicle runs.
Electronic control is actually the general term for the software + hardware of the vehicle so the electronic control system, we can understand the entire electronic control system as the nervous system of the vehicle, this system can control the operation ability of the vehicle, so the more powerful the electronic control system, the better the control and driving ability of the vehicle. Electronic control in a narrow sense refers to the vehicle controller, but the "electronic control" of new energy electric vehicles is more, including motor controllers and battery management systems, etc., which communicate through CAN networks.
The vehicle controller mainly collects various signals such as throttle and brake pedal, and makes corresponding judgments and instructions, and coordinates the communication of each controller on new energy vehicles.
The role of the motor controller is mainly to receive the torque message instructions of the vehicle controller, and then control the speed and direction of rotation of the drive motor, in addition, in the energy recovery process, the motor controller is also responsible for the drive motor secondary torque generated by the alternating current for rectification and recharge to the power battery. It faces relatively complex working conditions: it needs to be able to start and stop frequently, accelerate and decelerate, require high torque at low speed/climb, require low torque when driving at high speed, and have a large variable speed range.
Compared with the previous two controllers, the battery management system is relatively "young", battery safety and performance has always been the focus of our attention, the role of the battery management system is to ensure the safety and stability of the battery and the normal operation of different environments, its main functions include: real-time monitoring of battery physical parameters, online diagnosis and early warning, charge and discharge and pre-charge control, balanced management and thermal management.
Because the electronic control system is linked to other parts of the whole car, it will affect other components of the whole car, so the electronic control system must have a very high control accuracy and dynamic response rate, while also being able to provide high safety and reliability, if there is a problem in a certain link, it is really a whole body, light will lead to vehicle nesting, heavy may lead to serious traffic accidents, endangering our life safety.
In order to continuously improve the electronic control system and provide better services, the electronic control system and our computer and mobile phone system can be upgraded remotely through the wireless network, which is what we often call OTA. It mainly includes two aspects, one is the upgrade of application software, such as navigation, music, car machine system, etc.; the other is the upgrade of firmware, that is, the control software of all parts of the vehicle. The upgraded vehicle changes some of the performance parameters or adds new features.
Having said all that, how do we tell if a car's electronic control system is good or not? The quality of the electronic control system is actually difficult to say, after all, the electronic control system for the user can not intuitively feel, as mentioned above, it will affect the play of other parts of the car, so it can only be compared through some data to make a simple judgment, such as 100 km acceleration time, 100 km power consumption, maximum speed, charging power and speed and so on.
Write at the end:
Electric vehicles as a whole, composed of countless small parts, just like our human body, each component has its existence of the necessary, although the electronic control system is rarely concerned by us, but the lack of it will have a great impact on the whole, when buying a car we can also first understand the technical strength of the brand, try to choose a brand with higher popularity, at least in the accumulation of technology will have more guarantees.