How does EVCC work?

Introduction

With the increasing popularity of electric vehicles (EVs) worldwide, the electric vehicle charging controller (EVCC) has become a key device to ensure a smooth and safe charging process. EVCC is not only responsible for managing the charging process of the vehicle, but also provides the necessary protection functions to ensure that the whole charging process is efficient and safe. The purpose of this paper is to discuss the working mechanism and control logic of EVCC.

Working Principle

Energy conversion and regulation

As the core of electric vehicle charging system, EVCC integrates two components of energy converter and control system. The task of the energy converter is to change the alternating current provided by the power grid into direct current suitable for battery charging. This usually involves regulation of voltage and current to ensure a stable and efficient power supply. At the same time, the control system is responsible for monitoring the whole charging activity, including recording power data, regulating power output and ensuring the safety of operation.

Communication capability

In order to realize information exchange with electric vehicles, charging piles and power grids, EVCC is equipped with special communication units. Through this interface, the specific needs of the vehicle can be grasped in real time, and various parameter settings can be accurately controlled to optimize the charging experience.

Security

In order to prevent any possible dangerous situation, EVCC has set up multiple protective measures, such as overcurrent, overvoltage and high temperature protection. Once an abnormal situation occurs, the system will respond immediately and take appropriate action to avoid potential damage.

Measurement and settlement

In addition, the EVCC is able to track the actual amount of power consumed and generate billing details accordingly. This feature is extremely convenient for both users and service providers because it simplifies the process of cost calculation while supporting more efficient energy management.

Control Logic

Initial connection

When the electric vehicle is connected to the charging pile, the first thing that happens is the handshake procedure between EVCC and the charging pile to establish the connection between the two sides. During this time, the system checks their status and prepares them for the next action.

Parameter Protocol

EVCC needs to agree with electric vehicles and charging piles on specific charging conditions, such as the required power level and charging mode. This is done to ensure that the final solution meets both the actual needs of the vehicle and the technical specifications of the charging point.

Charge execution

During the whole charging process, EVCC flexibly adjusts the power supply intensity according to the actual situation. Generally speaking, it will use the method of first constant current and then constant voltage to charge, which can not only quickly replenish energy, but also avoid overcharging the battery. Use a lower current to preheat the battery in the initial stage, then increase the current to accelerate the charging, until it is close to the full load state, switch to the constant voltage mode, and complete the final stage of charging with a low current.

Closure and settlement

Once the predetermined charging target is reached, the EVCC will instruct the charging pile to stop supplying power. At the same time, it will also save all the relevant data of the charge, so as to facilitate the subsequent bill processing and data analysis.

Software update and remote control

It is worth mentioning that EVCC also has the ability to upgrade remotely, allowing the latest firmware updates to be received over the network to introduce new features or improve performance. In addition, with the support of cloud technology, EVCC can automatically identify different types of electric vehicles, select the optimal charging strategy, and implement remote monitoring.

Global applicability

Considering the diversity of the international market, EVCC is designed to be compatible with multiple standards. It can convert the Chinese national standard GB/T27930 CAN communication protocol into ISO/IEC15118, DIN70121 or SAE2847-2 PLC communication standards commonly used in European and American markets, as well as the Japanese CHAdeMO standard. In this way, even in overseas areas, electric vehicles that meet Chinese standards can find suitable charging solutions smoothly.

Future Developments in EVCC Technology

The evolution of EVCC technology is moving toward more intelligent and integrated systems. Future EVCC units are expected to incorporate artificial intelligence algorithms to predict user charging patterns and optimize energy usage based on individual behaviors and grid conditions. Vehicle-to-grid (V2G) capabilities will allow EVs to not only draw power from the grid but also return excess energy during peak demand periods, with EVCC managing these bidirectional energy flows.

Wireless charging integration is another area of development, where EVCC will manage inductive charging processes without physical connections. Enhanced cybersecurity features are also being integrated to protect against potential hacking attempts as charging infrastructure becomes more connected.

Summary

In short, EVCC has played a vital role in promoting the development of electric vehicle. With its excellent energy management, intelligent communication, comprehensive security protection and convenient metering services, EVCC greatly improves the charging experience of users. In the future, with industry progress and technological innovation, we have reason to expect EVCC to bring more exciting changes and further promote the development of electric vehicle technology.