Technical Specification
|
Model No.
|
ENJBMS2A16S50/ ENJBMS2A16S100/ENJBMS2A16S50P/ ENJBMS2A16S100P
|
ENJBMS2A16S200/ ENJBMS2A16S300/ENJBMS2A16S200P/ ENJBMS2A16S300P
|
Lithium iron string number
|
4~16
|
4~16
|
Equalization mode
|
Active equalization
|
Equalizing current
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0~2A
|
0~2A
|
Continuous discharge current
|
50A/100A
|
200A/300A
|
Maximum discharge current
|
50A/100A
|
200A/300A
|
Overcurrent protection (adjustable)
|
100A/200A
|
300A/400A
|
Outlet mode
|
Common port
|
Overcharge Protection Voltage(Adjustable)
|
3.65V or 4.2V(Programmed to fit for LiFePO4/NMC Li-ion/LTO/Sodium-ion batteries)
|
Overcharge release voltage(adjustable)
|
3.50V(Programmed to fit for LiFePO4/NMC Li-ion/LTO/Sodium-ion batteries)
|
Over-discharge protection voltage(adjustable)
|
2.50V(Prograemmed to fit for LiFePO4/NMC Li-ion/LTO/Sodium-ion batteries)
|
Over-discharge recovery voltage(adjustable)
|
3.00V(Programmed to fit for LiFePO4/NMC Li-ion/LTO/Sodium-ion batteries)
|
Temperature interface
|
YES
|
Short circuit protection
|
YES
|
Coulomb Meter Algorithm
|
YES
|
Display interface
|
Optional
|
RS485 communication interface
|
Optional
|
RS232 communication interface
|
Optional
|
CAN communication interface
|
Optional
|
Heating interface
|
Optional
|
Bluetooth interface
|
Optional
|
Charge current limit function
|
Optional
|
Maximum number of temperature detection
|
Optional
|
Connector
|
Interface Name
|
PIN NO.
|
ENJBMS2A16S50/100/200/300 ENJBMS2A16S50P/100P/200P/300P
|
Name
|
Definition
|
P1
|
Equalization and Acquisition Interface
|
1
|
B0
|
Negative terminal of the 1st battery string
|
2
|
B1
|
Positive terminal of the 1st battery string
|
3
|
B2
|
Positive terminal of the 2nd battery string
|
4
|
B3
|
Positive terminal of the 3rd battery string
|
5
|
B4
|
Positive terminal of the 4th battery string
|
6
|
B5
|
Positive terminal of the 5th battery string
|
7
|
B6
|
Positive terminal of the 6th battery string
|
8
|
B7
|
Positive terminal of the 7th battery string
|
9
|
B8
|
Positive terminal of the 8th battery string
|
10
|
B9
|
Positive terminal of the 9th battery string
|
11
|
B10
|
Positive terminal of the 10th battery string
|
12
|
B11
|
Positive terminal of the 11th battery string
|
13
|
B12
|
Positive terminal of the 12th battery string
|
14
|
B13
|
Positive terminal of the 13th battery string
|
15
|
B14
|
Positive terminal of the 14th battery string
|
16
|
B15
|
Positive terminal of the 15th battery string
|
17
|
B16
|
N/A
|
P2
|
1
|
B17
|
N/A
|
2
|
B18
|
N/A
|
3
|
B19
|
N/A
|
4
|
B20
|
N/A
|
5
|
B21
|
N/A
|
6
|
B22
|
N/A
|
7
|
B23
|
N/A
|
8
|
B+
|
Positive terminal of the battery pack
|
P3
|
Switch interface
|
1
|
Function when the switch is turned off: BMS operates normally with power supply
Functions when the switch is turned off:
1.All BMS power are disconnected.
2.Charging and discharging functions are disabled
|
2
|
P4
|
Display interface
|
1
|
LCD power supply positive terminal
|
2
|
LCD 3.3V positive terminal
|
3
|
LCD RXD
|
4
|
LCD TXD
|
5
|
LCD power supply negative terminal
|
6
|
LCD control power ON/ OFF
|
P5
|
Bluetooth interface
|
1
|
Bluetooth power positive
|
2
|
Bluetooth enable positive
|
3
|
Bluetooth RXD
|
4
|
Bluetooth TXD
|
5
|
Bluetooth power negative
|
6
|
Bluetooth reset
|
P6
|
DTC
|
1
|
Dry contact point 1
|
2
|
Dry contact point 1
|
3
|
Dry contact point 2
|
4
|
Dry contact point 2
|
P7
|
SOC LED
Note 1 Explanation
|
1
|
LED power supply +3.3V
|
2
|
LED1
|
3
|
LED2
|
4
|
LED3
|
5
|
LED4
|
6
|
LED5
|
7
|
LED Power Ground
|
P8
|
HEAT NTC
|
1
|
Heated NTC detector terminals
|
2
|
Heated NTC ground
|
P9
|
SOC Lamp Board
Switch Interface
|
1
|
The short press LED will indicate the actual capacity of the battery according to the SOC value, see note 1 for details.
|
2
|
P10
|
RS485 communication interface
|
1
|
RS485 Isolated 5V
|
2
|
RS485_B
|
3
|
RS485_A
|
4
|
RS485 Isolated Straight Ground
|
P11
|
CAN communication interface
|
1
|
CAN Isolated 5V
|
2
|
CANH
|
3
|
CANL
|
4
|
CAN Isolated Ground
|
P12
|
RS232 communication interface
|
1
|
NC
|
2
|
RS232_TXD
|
3
|
RS232_RXD
|
4
|
RS232 Ground
|
P13
|
Heating Interface
|
1
|
Heater Negative
|
2
|
Heater Negative
|
P14
|
Temperature interface
|
1
|
1stNTC Negative
|
2
|
1stNTC Positive
|
P15
|
DIAL Switch
|
1
|
Dial switch function, please refer to Note 2 for details. Setting the address code of each battery for communication when multiple batteries are connected in parallel
|
B+
|
Connect to the overall positive terminal of the battery pack
|
B-
|
Connect to overall negative terminal of the battery pack
|
P-
|
Connect to external load negative terminal or charger negative terminal
|
Remark:Wiring method for downward compatible battery series: just short the positive terminal of the highest battery and the vacant high series together. If you want to connect to 16 strings, short B16, B17~B23, B+ wires together. If you want to connect 8 strings, short B8,B9~B23,B+ wires together. If you want to connect 4 strings, short B4,B5~B23,B+ wires together.
Example: Wiring battery 36V 10 strings, shortB24~B10 together, other strings refer to the table to short together.
What are the key features that a ENJBMS should have?
Safety: ENJBMS have features to ensure the safe operation of the lithium battery, such as over-charge protection, over-discharge protection,over-temperature and short-circuit protection.
Accuracy: ENJBMS provide accurate voltage, current, and temperature readings to allow for proper battery monitoring and management.
Flexibility: ENJBMS support various types of lithium battery chemistries(like LiFePO4, LTO, NMC Li-ion,Sodium-ion batteries) and be adaptable to different battery configurations and sizes.
Reliability: ENJBMS have a robust design and be able to operate consistently and accurately over an extended period of time.
Communication: ENJBMS have a reliable communication interface, such as Bluetooth or RS232, WiFi, I2C, CAN, or RS485, to allow for easy integration with other system components and monitoring software.
Scalability: ENJBMS can scalable to accommodate future growth and changes in battery requirements. Support further software upgraded by bluetooth or ENJBMS PC software.
Cost-effectiveness: ENJBMS have a good balance between performance and cost, and be a cost-effective solution for the specific battery application.
These are the main characteristics that a top-performing Lithium Battery Management System should have.