With the popularization of electric vehicles and the enhancement of people's awareness of environmental protection, charging piles are an important part of electric vehicle charging equipment. The charging pile industry is developing rapidly, and a large number of applications in the consumer market have also created a growing market demand. Therefore, the requirements of product functions, reliability, and safety have become particularly important, and the use of traditional single-chip products cannot meet the needs of intelligent control of charging piles. This article will introduce in detail the charging pile application scheme based on the Mill STM32MP135 core board.
Figure 1: Charging Scheme Diagram
The STM32MP135 series microprocessor is used to design the intelligent embedded charging pile for electric vehicles, and the intelligent control of complex functions is realized by "commanding" 8-bit and 16-bit microcontrollers. In the application of smart charging piles, the advantages of STM32MP135 with high cost performance, low power consumption and high reliability have the following aspects:
Run Linux system, process data and tasks in real time
Charging piles are usually composed of a main control system and multiple subsystems. The subsystems generally include power supply systems, charging guns, electric meters, display screens, card reading modules, and temperature detection systems. In charging pile applications, it is necessary to be able to efficiently handle various complex tasks such as data processing, communication and user interface control. The STM32MP135 chip is equipped with a Cortex-A7 processor with a computing frequency up to 1GHz, which allows customers to easily run the Linux system on the ST chip and provides powerful data processing capabilities.
Figure 2: STM32MP135 processor frame diagram
A variety of peripheral interfaces, easy to connect external devices
During the use of the charging pile, it is necessary to realize real-time monitoring and control of the battery status, charging process and communication status, etc., and exchange data with other systems. The STM32MP135 chip integrates a wealth of peripheral interfaces, including UART, SPI, I2C, USB, CAN FD, dual Gigabit Ethernet, etc., can easily connect various sensors, communication modules, displays and other external devices in the charging pile.
Figure 3: Mill STM32MP135 core board-charging pile solution block diagram
Secure encryption to protect data
As a device involving high-voltage electricity, the safety of the charging pile is of paramount importance. The STM32MP135 chip provides a wealth of security features, including hardware encryption engine, secure boot and hardened boot, and external access control. These functions can help charging piles resist various attacks and ensure the safety of users and the integrity of data.
Low power design to reduce energy consumption
Electric vehicle charging piles need to run for a long time and consume a lot of power, so the optimization of power consumption is very important. The STM32MP135 chip has low power consumption characteristics, and can automatically adjust the power consumption level according to the demand, so as to prolong the working life of the charging pile and reduce energy consumption.
Flexible Software Support
ST provides a wealth of software support and development tools, including development boards, Linux operating systems and development environments. These tools provide developers with the ability to quickly and efficiently develop and debug charging station applications.
Figure 4: Mill STM32MP135 core board adapts to various scene requirements
Summary: The STM32MP135 chip performs well in charging pile applications due to its powerful processing capabilities, multi-functional features, safety assurance and low power consumption design. The advantages of this chip enable charging piles to achieve efficient charging management, intelligent control and safety assurance to meet the growing market demand for electric vehicles. Whether it is a small household charging pile or a large commercial charging pile, STM32MP135 is a recommended choice.
Figure 5: Mill STM32MP135 core board development board
More than that, the Mill STM32MP135 core board, with its excellent quality and high cost performance, can also be widely used in industries such as Industry 4.0, industrial automation, payment terminals, smart metering, smart home, and electric power new energy.
Figure 6: Application Scenario of Mill STM32MP135 Core Board Development Board