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Outdoor activities such as tourism, camping and self-driving trips have brought all kinds of portable electrical equipment, and the increasing demand for charging has promoted the prosperity of the mobile power market. According to the forecast of China Research Network, the global mobile power market is expected to maintain stable growth by 2029, and the market size will reach 1.087 billion US dollars.

With the development of technology, consumers have put forward higher requirements for the quality and experience of mobile power products. In addition to the basic requirements of power storage, safety, portability, etc., products with more beautiful, multi-functional, humanized and other advantages can win the favor of consumers. The application of GEhai APM32F411RET6 industrial-grade high-fit MCU as the master mobile power control board solution can meet the comprehensive design requirements of performance, function and volume, which can help customers create more cost-effective and competitive mobile power products.

The solution is 3.6KW mobile power control board, the battery core is lithium iron phosphate, the use of built-in bidirectional inverter module, in the case of small volume, high power density, to achieve 220V input/output, charging/electricity dual working mode. Main features:

Multi-mode stable charge and discharge

• Maximum battery capacity 2048Wh, 4000 cycles;

• Charging mode: Support 220-240V AC, 500W vehicle charging, 1000W (Max) solar panel charging;

• Output mode: 220V/2400W, AC output 220-240V, Max. 10A;

• Support USB output, USB-A port up to 18W, Type-C up to 100W;

• Support car charging output 12.6V/126W, DC5521 up to 12.6V/38W.

Humanized multi-functional design

• Support man-machine interaction function, using SPI interface to expand the external LCD module, can display the current power and subsequent working time, charge and discharge working status, time, real-time temperature and humidity, fault alarm display, timing output and other information;

• Through the film switch key input, you can set discharge mode, overpower output mode, timing time, alarm type threshold, password protection and child lock, Bluetooth connection and other functions;

• Built-in EEPROM, save system Settings and user's habitual working mode;

• Built-in temperature and humidity sensor and high-precision RTC chip, communicate with MCU to obtain current accurate temperature and humidity information and time information;

• Support Bluetooth interception function, users can connect and interact with the device using the mobile APP through Bluetooth function;

• Support LED lighting function, you can complete LED lighting start and stop and brightness adjustment by mobile phone APP or button;

• MCU built-in CAN controller to communicate with BMS to obtain EMS real-time status and power data.

Multiple security protection mechanisms

• Built-in APM32F411RET6, through the algorithm to control the built-in bidirectional inverter to achieve charge and discharge function, automatically detect the real-time current and voltage status of the line, ensure the normal operation of the equipment, once the fault is found, immediately start the protection set, cut off the circuit through the protection relay;

• The built-in current sensor chip detects the current of the line, and the MCU obtains current information through the sensor, communicates with the inverter in time and adjusts the working state to play the role of system protection and power regulation;

• Can achieve over discharge/over charge/under voltage/overload protection, electrostatic protection, high and low temperature protection, external short circuit protection, differential pressure protection, open circuit protection, etc., to ensure the safety of electricity.

APM32F411 MCU performance benefits

• Based on Cortex-M4F core, 120MHz high frequency;

• Flash 512KB, SRAM 128KB, to meet the needs of simultaneous communication with BMS system, bidirectional inverter module and display module;

• Built-in U(S)ART×6, SPI/I2S×5, I2C×3, CAN×2, and USB/SDIO/SMC interface, can be connected to the external current sensor /RTC/EEPROM/LCD display module, to achieve a variety of function combination and fast response control;

• High-precision 12-bit ADC module, can obtain more accurate temperature and humidity information;

• SMC interface can also achieve TFT screen driver (8080 interface screen), improve user experience.

APM32F411 series MCU has been widely used in BMS, power equipment, charging pile, motor applications, 3D printing, robots, drones and other markets, products with high cost performance, strong stability, high anti-interference, high consistency, stable supply cycle, and mature development ecology, can help customers improve product competitiveness, shorten product design cycle. Accelerate time to market.

Article source: Geehy Polar Sea Semiconductor

Company's official website: www.hkmjd.com