REC-ABMS-4S Active BMS

REC Active BMS for 4 cells connected in series with active bi-directional balancing. Long-term development now enables us to present you this excellent device, proven with various real life test conditions, latest technology of electronics components and unbeatable balancing algorithms.

Features:

• Li-PO, LiFePO₄, LiFeYPO₄, LiCoO₂, LiMnNiCo and LiMnO₄ Lithium-Ion chemistry
• 4 series connected cells per unit
• high efficiency 2 A bi-directional active balancing (pack to cell and cell to pack)
• IP65 protection enclosure, AMP 35 pin water resistant connector
• 2 – 5 V measuring range, 2 mV accuracy
• up to 2 digital temperature sensors
• shunt current measurement
• robust and small design
• galvanically isolated RS-485 and CAN communication protocol
• two programmable fused relay output
• two programmable fused digital output
• ON/OFF switch
• LED and buzzer status indication
• bootloader
• error LED + buzzer indicator
• PC user interface for changing settings, data-logging and firmware update
• compatible with REC LCD touch display for monitoring

Microcontroller:

• low power microcontroller RTC
• custom made software with bootloader for remote firmware update
• 60 mW self power consumption with disabled CAN and all outputs

RS - 485 communication:

• galvanically isolated RS-485 communication
• Slave configuration
• RS-485 driver primary side supply is activated with Master connection to save energy consumption
• fully compatible with REC LCD touch display and PC user interface BMS Master control

Active Balancing:

• 2A cell equalizing with active balancing with synchronous flyback bi-directional energy transfer: cell to pack and pack to cell
• top side and bottom side balancing prolong the cycle duration due to the weakest cell

Outputs:

• two fused relay outputs with NO and NC pins
• two fused galvanically isolated/non-isolated digital outputs with PWM option

Galvanically Isolated CAN:

• galvanically isolated CAN
• 100, 125, 250, 500, 1 MHz bit-rate selection
• message programming
• disable option

REC-ABMS Active BMS.pdf