MKBMS is based on the modular BMS of LTC6811 and connects to one or more slave boards and integrated boards of different sizes through the ISOSPI interface.
BMS Function
| Overcharge protection | Yes |
|---|---|
| Over discharge protection | Yes |
| Temperature protection | Yes |
| Thermal management | Yes |
| Balance function | Yes |
| Battery pack capacity detection | Yes |
| Battery internal resistance detection | Yes |
| Support battery | Li-ion, lithium polymer, lithium phosphate and most lithium batteries |
LTC6811 12S Slave Features
- Aluminum alloy PCB, better heat dissipation effect
- Compatible with MKBMS and ENNOID BMS
- 5-12 cell level monitoring per board
- 1+4 temperature sensors per slave
- Self-powered by monitored cells
- Ultra-low power consumption, sleep mode = 6uA
- Multiple slave boards can form an integrated board through the ISOSPI interface
- Daisychain Master ISOSPI communication
- 1.2mV accuracy, -40 to 120C operation
- 33 ohm balance resistors (0.125A capacity) on all channels
- Scalable and isolated 1000VDC+
- Molex SL horizontal connectors for balance and temperature
Pack Configuration Examples
- 23S pack: 2 x LTC6811-12S, configured as 12S + 11S
- 27S pack: 3 x LTC6811-12S, configured as 9S + 9S + 9S
- 29S pack: 3 x LTC6811-12S, configured as 10S + 10S + 9S
- 30S pack: 3 x LTC6811-12S, configured as 10S + 10S + 10S
- 35S pack: 3 x LTC6811-12S, configured as 12S + 12S + 11S
- For uneven cell count in series, only the last slave board in the daisy-chained loop should have one fewer cell connected than the other slaves.
MKBMS Functions
- Current and voltage protection
- Battery health monitoring
- Thermal management
- Support for Li-Ion, Li-Polymer and Li-Phosphate batteries
- Field programmable configuration
- Current limit calculation
- Fully programmable CANBUS interface
- 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
- Software for data logging and programming
Application Fields
- Electric vehicles
- Electric patrol cars
- Scenic sightseeing cars
- Handling robots
- Automatic forklifts
- Electric two-wheelers
- AGV forklifts
- Electric tricycles
- Electric mobility vehicles
- RV
- Solar street lights
- Outdoor energy storage
- Home energy storage equipment
- Robots
Shipping List
- 1 x LTC6811-12S-AL V1.2 slave board
- 2 x GH1.25 double-head 2P same-direction lines
- 1 x HY2.0 single-head 5P line
- 1 x HY2.0 single-head 13P line
- 4 x Nylon columns
- 4 x Nylon nuts
Operation Notes
- The first temperature channel is used by the slave board itself.
- The following 4 temperature sensors are not included in the package list but indicate interfaces that can connect up to 4 temperature sensors.
LV Master Board + 12S Slave Board Package
- 1X PCBA board MKBMS-LV Master Mini V1.4
- 2X GH1.25 single head 2P line
- 1X GH1.25 double head 2P same direction line
- 3X 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
- 1X PCBA board LTC6811-12W-AL V1.2 slave board
- 2X GH1.25 double head 2P same direction line
- 1X HY2.0 single head 5P line
- 1X HY2.0 single head 13P line
- 4X Nylon column
- 4X Nylon nut
- Molex SL horizontal connectors for balance & temperature (Comes with male, female + crimps)
