MKBMS is based on the modular BMS of LTC68XX and STM32 MCU, and is connected to one or more slave boards and integrated boards of different sizes through the ISOSPI interface.
The modular BMS can be configured for various applications with battery voltages within 150V.
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 | Support almost all lithium batteries such as lithium ion battery, lithium polymer battery, lithium phosphate battery, etc. |
MKBMS LV Master Mini Board Features
- More compact layout and smaller size.
- Based on the high-quality automotive-grade SMT32 MCU.
- With charger voltage measurement, humidity sensor, isolated on-board 5V power supply for isolating CAN bus interface and USB Type-C
- 30V to 150V 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
- Daisy chain 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 MAXKGO BMS TOOL
- OLED display output
- ON/OFF toggle switch input
- SWD burn debugging or update firmware interface
Slave Board Match Example
- 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)
- 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.
- Support batteries: Li-Ion, Li-Polymer, Li-Phosphate
- 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
Adaptation Field
- Electric vehicles
- Electric patrol car
- Electric two-wheeler
- AGV forklift
- Sightseeing car
- Electric tricycle
- Electric mobility vehicle
- RV
- Solar street light
- Outdoor energy storage
- Home energy storage equipment
- Robot and etc.
Shipping List
MKBMS LV Master Mini 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
Master Mini + Wiring Terminal Package
- 1X PCBA board MKBMS LV Master Mini V1.4 motherboard
- 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 12MM 3-6V key switch
- 4X 90 degree angle terminal block T90-25/8 (red copper)
- 2X M8*16 stainless steel round head screws (stainless steel)
- 2X M8*Stainless steel nuts (stainless steel)
- 4X M8 Copper Gasket (Red Copper)
MKBMS LV MINI Master Board + Main Contactor EVC500 Package
- 1X PCBA board MKBMS-LV Master Mini V1.4 motherboard
- 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 12MM 3-6V key switch
- 1x TE2299223-2 EVC500 Main Contactor
- 1X HY2.0 single head 2P line
MKBMS-LV MINI Master Board + Step-down Module 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 Step-Down Module
