MKBMS is based on the modular BMS of LTC68XX and STM32 MCU, and is connected to one or more slave boards and integrated integrated boards of different sizes through the ISOSPI interface. The modular BMS can be configured for various applications with battery voltages within 400V.
MKBMS is developed based on the open source materials of DieBieMS and ENNOID BMS. Currently MKBMS is compatible with ENNOID firmware. Here, a special thanks to the developers of open source BMS materials.
MKBMS HV Master Mini Board Features
- With charger voltage measurement, humidity sensor, isolated on-board 5V power supply for isolating CAN bus interface and USB Type-C
- 100V to 400V operation
- Voltages measurements for load & battery pack
- Bi-directional current monitoring (up to 2500A pulsed, 500A continuous)
- Isolated charger detection circuit
- Isolated CAN bus interface
- Daisychain Master/Slave ISOSPI communication
- Single PCB pattern for bolt-on contactor
- It can internal power supply or external power supply voltage is 12V
- Integrated predischarge circuit
- USB & serial interface for configuring and firmware upgrades with the ENNOID-BMS-Tool
- OLED display output
- ON/OFF toggle switch input
- SWD burn debugging or update firmware interface
Pack Configuration Examples
- MKBMS monitoring 23S pack: 2 x LTC6811-12S: 12S + 11S (Optimal)
- MKBMS monitoring 23S pack: 2 x LTC6812-15S: 12S + 11S (Two slaves partially loaded)
- MKBMS monitoring 23S pack: 2 x LTC6813-18S: 12S + 11S (Two slaves partially loaded)
- MKBMS monitoring 27S pack: 3 x LTC6811-12S: 9S + 9S + 9S (Three slaves partially loaded)
- MKBMS monitoring 27S pack: 2 x LTC6812-15S: 14S + 13S (Optimal)
- MKBMS monitoring 27S pack: 2 x LTC6813-18S: 14S + 13S (Two slaves partially loaded)
- MKBMS monitoring 29S pack: 3 x LTC6811-12S: 10S + 10S + 9S (Three slaves partially loaded)
- MKBMS monitoring 29S pack: 2 x LTC6812-15S: 15S + 14S (Optimal)
- MKBMS monitoring 29S pack: 2 x LTC6813-18S: 15S + 14S (Two slaves partially loaded)
- MKBMS monitoring 30S pack: 3 x LTC6811-12S: 10S + 10S + 10S (Three slaves partially loaded)
- MKBMS monitoring 30S pack: 2 x LTC6812-15S: 15S + 15S (Optimal)
- MKBMS monitoring 30S pack: 2 x LTC6813-18S: 15S + 15S (Two slaves partially loaded)
- MKBMS monitoring 35S pack: 3 x LTC6811-12S: 12S + 12S + 11S (Good)
- MKBMS monitoring 35S pack: 3 x LTC6812-15S: 12S + 12S + 11S (Three slaves partially loaded)
- MKBMS monitoring 35S pack: 2 x LTC6813-18S: 18S + 17S (Optimal choice)
- MKBMS monitoring 90S pack: 3 x LTC6811-12S: 12S+12S+12S+12S+12S+12S+12S+6S (Ordinary)
- MKBMS monitoring 90S pack: 3 x LTC6812-15S: 15S+15S+15S+15S+15S+15S (Good)
- MKBMS monitoring 90S pack: 2 x LTC6813-18S: 18S + 18S + 18S + 18S + 18S (Optimal choice)
- For uneven cell count in series, only the last slave board in the daisy-chained loop should have one cell less connected than the other slaves. Ex: 39S = 10S + 10S + 10S + 9S
MKBMS Battery Management System Functions
- Current and voltage protection: protect the battery pack from overcharge and overdischarge, thereby extending the cycle life.
- Battery health monitoring: monitor the internal resistance of a single battery and the monitoring capacity of the battery pack.
- Thermal management: Overheating and under-temperature protection with fan control for cooling or heating.
- Support batteries: Li-Ion, Li-Polymer, Li-Phosphate
- Intelligent battery balance: passive balance and active balance
- Rugged and anti-EMI
- Field programmable
- Current limit calculation
- Fully programmable CANBUS interface, programmable structure of all CAN messages
- Drift state of charge
- Reliability, speed and accuracy
- Integration with other devices
- Multiple BMS units connected in series
- Current sensor support
- Isolation from fault detection
- Automotive grade design, automotive grade locking connector
- Software for data logging and programming
Applications
- Electric vehicles
- Electric patrol car
- Scenic sightseeing car
- Handling robots
- Automatic forklift
- Electric bicycles
- Electric skateboard
- Electric tools
- Consumer robots, etc.
Shipping List
MKBMS-HV Master Board Package
- 1X PCBA board MKBMS-HV Master Board
- 2X GH1.25 single head 2P line
- 1X GH1.25 double head 2P same direction line
- 5X HY2.0 single head 2P line
- 2X GH1.25 single head 5P line
- 1X GH1.25-5P to Dupont line
- 1X USB cable type-C data cable
- 1X 2.0MM jumper cap
- 1X 1.3 inch OLED display LCD screen module
- 1X Switch
