In order to facilitate customers to have a simpler understanding of MAXKGO BMS. This blog mainly introduces the product catalog and BMS-TOOL tutorials

Next I will introduce to you our BMS classification：

Hardware BMS board

4-14S 30A Li-ion BMS board:

Product Description--

Charging current: ≤10A

Discharge current: 30A

Internal resistance: ≤15mΩ

Charging voltage: The number of Li-ion battery in series connection X 4.2V
Wiring : Same Port

Overcharge protection——

Detection voltage: 4.25±0.025V

Detection delay: 1000±500MS

Release voltage: 4.15±0.05V

Over-discharge voltage protection——

Detection voltage: 2.75±0.1V

Detection delay: 1000±500MS

Release voltage: 3.0±0.1V

Balanced voltage——

Detection voltage: 4.15±0.025V

Detection delay: 100±50MS

Balance current: 42±5MA

Over discharge current protection——

Detection voltage: 50±15MV

Detection delay: 1000±500MS

Current protection: 50±8A

Short circuit protection--

Trigger condition: external short circuit

Detection delay: 300us

Release condition: disconnect the load

Temperature control protection——

Charge and discharge over-temperature protection: 55℃

Charge and discharge high temperature release temperature: 75℃

Release condition:During normal working temperature

Self-consumption——

Working power consumption: <35UA

Over-discharge power consumption(Sleeping State): <10UA

Operating temperature range: -30°~+80°C

Product Features--

Overcharge protection

Over discharge protection

Over current protection

Balanced protection

Temperature control protection

Applicable for 4-7S /8-14Sbattery 

Size:47.6*32*9.2mm

Net weight:12.2g/13.3g

Weight:87g/96g

Package:

1* 4-7S/8-14S BMS PCBA board

1*HY2.0 single head 8P line/1*HY2.0 single head 8P line and 1*HY2.0 single head 7P line

1. It is strictly forbidden to insert balance wires into BMS before connecting batteries.Must make sure that the cable is soldered correctly first , and then connect the BMS board.
2. The sequence of connecting wires for BMS:
   From thin black balance wire to stare, the 2^ndwire(thin red wire)connect with the 1^st battery’s positive pole.Then connect each cell’s positive pole in order until the last one B+.
   b.Please do not insert the plug directly after the cable is connected.Measure the voltage between each two adjacent metal terminals on the back of the plug. If it is a ternary polymer battery, the voltage should be between 3.0 ~4.2V, and the voltage of the iron-lithium battery should be between 2.0 ~3.6V. The voltage should be between 1.5~2.75V.
   c.After confirming that the wiring sequence and voltage of the cables are correct, insert them into the socket of the protection board.
   Attention please: The cables of different manufacturers are not universal, please make sure to use the matching cables.
3. After the wiring is completed, measure whether the voltage of battery B+and B- ,and the voltage of B- and C- are equal. If they are equal, the protection board is working normally and can be used normally. If it is not equal, please check the wiring again.

 

 

4-14S 80A Li-ion Battery Protection BMS board:

MKBMS 4-14S_80A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 80A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.

 

Parameters:

Battery type: li-ion battery (standard voltage 3.7V)

Balance method: passive balance

Number of battery strings: 4S-14S

Overcharge voltage: 4.25V

Overcharge recovery voltage: 4.15V

Over discharge threshold: 2.8V

Over discharge release: 3.0V

Passive equalization turn-on voltage: 4.125V

Charging current: 60A

Discharge current: 80A

Charging over current: 100A

Discharge over current: 250A

Charging protection temperature: 50°C

Charging recovery temperature: <45°C

Discharge protection temperature: 70°C

Discharge recovery temperature: <60°C

Size: 140*66*16mm

For detailed parameters, please refer to “15-24S BMS Parameter Table”

Feature:

1. Balance function, fully activate the battery capacity
2. No need to adjust parameters, the operation is easier
3. Metal heat sink, more stable performance
4. With locking cable arrangement, the wiring is more secure

Function:

1 .Over charge protection

2. Over discharge protection
3. Overcurrent protection
4. Short circuit protection
5. Temperature control protection
6. Balanced protection
7. Static protection
8. Load detection function 

Application :

1. Electric skateboard
2. Electric bicycle
3. Smart balance car
4. Electric Scooter
5. Forklift
6. Cleaning car
7. Sightseeing car
8. Three-wheels car

Shipping list:

1X MKBMS（4/7/10/13/14）S 150A Li-ion BMS Board

1X GH2.0 single head（5/8/11/14/15）P line（with buckle）

Operational matters:

please ensure the correctness of the wiring sequence during wiring.

Please arrange the lines in order from B0-B14.

After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.

 

 

 

15-21S 100A Li -ion battery protection BMS board:

MKBMS 15-21S_100A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 100A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.

Parameters:

Battery type: li-ion battery (standard voltage 3.7V)

Balance method: passive balance

Number of battery strings: 15S-21S

Overcharge voltage: 4.25V

Overcharge recovery voltage: 4.15V

Over-discharge threshold: 2.8V

Over-discharge release: 3.0V

Passive equalization turn-on voltage: 4.125V

Charging current: 60A

Discharge current: 100A

Charging overcurrent: 150A

Discharge overcurrent: 400A

Charging protection temperature: 50°C

Charging recovery temperature: <45°C

Discharge protection temperature: 70°C

Discharge recovery temperature: <60°C

Size: 140*66*16mm

For detailed parameters, please refer to "15-21S BMS Parameter Table"

Feature:

1. Balance function, fully activate the battery capacity
2. No need to adjust parameters, the operation is easier
3. Metal heat sink, more stable performance
4. With locking cable arrangement, the wiring is more secure

Function:

1 .Over charge protection

2. Over discharge protection
3. Overcurrent protection
4. Short circuit protection
5. Temperature control protection
6. Balanced protection
7. Static protection
8. Load detection function

Application :

1. Electric skateboard
2. Electric bicycle
3. Smart balance car
4. Electric Scooter
5. Forklift
6. Cleaning car
7. Sightseeing car
8. Energy storage
9. Outdoor power supply

Shipping list:

1X    MKBMS li-ion（15/16/17/18/19/20/21）S 100A BMS Board

1X GH2.0 single head（16/17/18/19/20/21/22）P line（with buckle）

Operational matters:

please ensure the correctness of the wiring sequence during wiring.

Please arrange the lines in order from B0-B12, B13-B21.

After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.

 

15-21S 120A Li -ion battery protection BMS board:

MKBMS 15-21S_120A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 120A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.

Parameters:

Battery type: li-ion battery (standard voltage 3.7V)

Balance method: passive balance

Number of battery strings: 15S-21S

Overcharge voltage: 4.25V

Overcharge recovery voltage: 4.15V

Over-discharge threshold: 2.8V

Over-discharge release: 3.0V

Passive equalization turn-on voltage: 4.125V

Charging current: 80A

Discharge current: 120A

Charging overcurrent: 200A

Discharge overcurrent: 480A

Charging protection temperature: 50°C

Charging recovery temperature: <45°C

Discharge protection temperature: 70°C

Discharge recovery temperature: <60°C

Size: 140*66*16mm

For detailed parameters, please refer to “15-21S BMS Parameter Table”

Feature:

1. Balance function, fully activate the battery capacity
2. No need to adjust parameters, the operation is easier
3. Metal heat sink, more stable performance
4. With locking cable arrangement, the wiring is more secure

Function:

1 .Over charge protection

2. Over discharge protection
3. Overcurrent protection
4. Short circuit protection
5. Temperature control protection
6. Balanced protection
7. Static protection
8. Load detection function

Application :

1. Electric skateboard
2. Electric bicycle
3. Smart balance car
4. Electric Scooter
5. Forklift
6. Cleaning car
7. Sightseeing car
8. Energy storage
9. Outdoor power supply

Shipping list:

1X MKBMS Li-ion（15/16/17/18/19/20/21）S 120A BMS Board

1X GH2.0 single head（16/17/18/19/20/21/22）P line（with buckle）

Operational matters:

please ensure the correctness of the wiring sequence during wiring.

Please arrange the lines in order from B0-B12, B13-B24.

After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.

 

15-21S 150A Li -ion battery protection BMS board:

MKBMS 15-21S_150A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 150A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.

Parameters:

Battery type: li-ion battery (standard voltage 3.7V)

Balance method: passive balance

Number of battery strings: 15S-21S

Overcharge voltage: 4.25V

Overcharge recovery voltage: 4.15V

Over discharge threshold: 2.8V

Over discharge release: 3.0V

Passive equalization turn-on voltage: 4.125V

Charging current: 100A

Discharge current: 150A

Charging over current: 250A

Discharge over current: 600A

Charging protection temperature: 50°C

Charging recovery temperature: <45°C

Discharge protection temperature: 70°C

Discharge recovery temperature: <60°C

Size: 140*66*16mm

For detailed parameters, please refer to “15-21S BMS Parameter Table”

Feature:

1. Balance function, fully activate the battery capacity
2. No need to adjust parameters, the operation is easier
3. Metal heat sink, more stable performance
4. With locking cable arrangement, the wiring is more secure

Function:

1 .Over charge protection

2. Over discharge protection
3. Overcurrent protection
4. Short circuit protection
5. Temperature control protection
6. Balanced protection
7. Static protection
8. Load detection function 

Application :

1. Electric skateboard
2. Electric bicycle
3. Smart balance car
4. Electric Scooter
5. Forklift
6. Cleaning car
7. Sightseeing car
8. Energy storage
9. Outdoor power supply

Shipping list:

1X MKBMS（15/16/17/18/19/20/21）S 150A Li-ion BMS Board

1X GH2.0 single head（16/17/18/19/20/21/22）P line（with buckle）

Operational matters:

please ensure the correctness of the wiring sequence during wiring.

Please arrange the lines in order from B0-B12, B13-B21.

After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.

 

 

 

 

Only charge BMS board

Kind tips：

1. Please ensure the correctness of the wiring sequence, from B0-B12, B13-B24, the voltage increases from low to high in sequence.
2. This BMS is compatible with battery packs up to 24s, which is over 100V DC when fully charged. Electric shocks from high voltage may cause serious injury.Please pay attention to safety when using.
3. This device is designed to reduce the risk of charging and will not protect against overcurrent discharge, undervoltage, internal pack shorts, pack overtemperature.

Smart BMS

MAXKGO BMS HV Master Board:

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 

 

MKBMS battery management system implements the following functions:

1. Current and voltage protection: protect the battery pack from overcharge and overdischarge, thereby extending the cycle life.
2. Battery health monitoring: monitor the internal resistance of a single battery and the monitoring capacity of the battery pack.
3. Thermal management: Overheating and under-temperature protection with fan control for cooling or heating.
4. Support batteries: Li-Ion, Li-Polymer, Li-Phosphate
5. Intelligent battery balance: passive balance and active balance
6. Rugged and anti-EMI
7. Field programmable
8. Current limit calculation
9. Fully programmable CANBUS interface, programmable structure of all CAN messages
10. Drift state of charge
11. Reliability, speed and accuracy
12. Integration with other devices
13. Multiple BMS units connected in series
14. Current sensor support
15. Isolation from fault detection
16. Automotive grade design, automotive grade locking connector
17. Software for data logging and programming

MKBMS can be roughly divided into three aspects: automobile, industry, and consumption:

1. Electric vehicles;
2. Electric patrol car;
3. Scenic sightseeing car;
4. Handling robots;
5. Automatic forklift;
6. Electric bicycles;
7. Electric skateboard;
8. Electric tools;
9. 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

 

 

MAXKGO BMS LV Master Board:

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
• 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

 

MKBMS Battery Management System Functions:

1. Current and voltage protection: protect the battery pack from overcharge and overdischarge, thereby extending the cycle life.
2. Battery health monitoring: monitor the internal resistance of a single battery and the monitoring capacity of the battery pack.

3 Support batteries: Li-Ion, Li-Polymer, Li-Phosphate

4.  Field programmable
5.  Current limit calculation
6.  Fully programmable CANBUS interface, programmable structure of all CAN messages
7.  Drift state of charge
8.  Reliability, speed and accuracy
9.  Integration with other devices
10.  Multiple BMS units connected in series
11.  Current sensor support
12.  Isolation from fault detection
13.  Automotive grade design, automotive grade locking connector
14.  Software for data logging and programming

Adaptation Field——

1. Electric vehicles
2. Electric patrol car
3. Electric two-wheeler
4. AGV forklift
5. Sightseeing car
6. Electric tricycle
7. Electric mobility vehicle
8. RV
9. Solar street light
10. Outdoor energy storage
11. Home energy storage equipment
12. Robotand 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

 

MAXKGO BMS 12S-15S-18S Slave board:

MKBMS is based on the modular BMS of LTC6811/LTC6812/LTC6813, and is connected 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: support almost all lithium batteries such as lithium ion battery, lithium polymer battery, lithium phosphate battery, etc.

LTC6211 12S Slave Features ——

1. Aluminum alloy PCB, better heat dissipation effect.
2. Compatible with MKBMS and ENNOID BMS.
3. from5-12 cells level monitoringper board.
4. 1+4temperature sensorsper slave.
5. Self-powered by the monitored cells.
6. Ultra-low power consumption, sleep mode=6uA

LTC6212 15S Slave Features ——

1. Aluminum alloy PCB, better heat dissipation effect.
2. Compatible with MKBMS and ENNOID BMS.
3. from5-15 cells level monitoringper board.
4. 1+9temperature sensorsper slave.
5. Self-powered by the monitored cells.
6. Ultra-low power consumption, sleep mode=6uA

LTC6213 18S Slave Features ——

1. Aluminum alloy PCB, better heat dissipation effect.
2. Compatible with MKBMS and ENNOID BMS.
3. from5-18 cells level monitoringper board.
4. 1+8temperature sensorsper slave.
5. Self-powered by the monitored cells.
6. Ultra-low power consumption, sleep mode=6uA

7.It can be connected to multiple slave boards to form an integrated board through the ISOSPI interface

8.Daisychain Master ISOSPI communication

9.1.2mV accuracy, -40 to 120C operation

10.33 ohm balance resistors (0.125A capacity) on all channels

11.Scalable & isolated 1000VDC+

12.Molex SL horizontal connectors for balance & temperature. (Comes with male, female + crimps)

 

*The first temperature channel is used by slave board itself.

The following 4 /8/8temperature sensors are not in the package lists

but means an interface to connect 4/8/8 temp sensors at most.

MAXKGO  All In One BMS board:

 Features-

1. Compact layout and mini
2. Using aluminum alloy material shell, better heat dissipation.
3. Automotive grade design, automotive grade locking connector.
4. Configuring and firmware upgrades over USB through the MAXKGO-BMS-TOOL and ENNOID-BMS-TOOL.
5. Automotive grade monitoring & balancing IC with separate power supply for increased reliability
6. Voltages measurements for load, charger & battery pack
7. Bi-directional current monitoring
8. SOC based on coulomb counting
9. Humidity sensor & board temperature monitoring
10. Charger detection circuit
11. Integrated precharge circuit
12. Power button, USB-C, UART, I2C & isolated CAN bus interface
13. On board High-Efficiency 3.3V regulator powered from the main battery pack
14. High current capacity automotive grade screw connectors for main power connections
15. Buzzer & status LED

Safety: 

Configurable under/over temperature cutoffs for charge & discharge

Configurable under/over cell voltage cutoffs

Configurable over current cutoff

Configurable minimum precharge value

High side load & charger disconnects

Transient voltage suppression on all inputs

Secondary fusing on all balance channels, USB port & power supply

Application ——

1. Electric skateboard
2. Electric bicycle
3. Electric unicycle
4. Electric scooter
5. Electric tricycle
6. Solar street light
7. Energy storage equipment
8. Sightseeing car
9. Handling forklift
10. Consumer robots

 

BMS TOOL tutorial

Image link：https://drive.google.com/file/d/1hyteB68X-ZzU9EozSQy2CO7QtR2THBX-/view?usp=drive_link

Video link:

Thank you for your patience in reading, see you in the next blog.

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