- 12V/20A 4S RS485 BMS
- 【Brief】:
Model: ZBL-12V20ATC4-4S
Battery packed series: 4S
Maxinum output current: 20A
Communication Protocol: RS485/UART
- 【Series】:Standard Series
This series BMS is mainly design for 12V with less than 20A operating current lithium battery group. In this scheme, a low power with high precision processor is used to match the high accurately sampling chip for dynamic intelligent management of battery pack. This series applied the unique SOC & SOH algorithm, which can elvaluate the higher accurate SOC for large capacity battery packed. At the same time, the intelligent dynamic equalization to ensure the lithium batteries work in a stable state and prolong the life of batteries.
Application Scope
12V (4S ) lithium battery packed
Features
1)Support RS485 & UART, for study the battery information and modified the firmware
2)Support 2 way temperature sensor for monitoring the battery group
3)Coulomb SOC algorithm and online self learning function, provide the SOC accurately
4)Intelligent dynamic balancing;
5)Support expansion of USB converting box, bluetooth module and LCD display(option)
No |
Item |
Condition |
Specification |
1 |
Input Voltage |
Input Voltage B+ to B- |
15.2V |
2
|
State of Charging(SOC)
|
Battery cell voltage accuracy |
±30mV |
Battery Packed voltage accuracy |
±300mV |
||
Current accuracy rate |
±3% |
||
SOC accuracy rate |
±10% |
||
3 |
Overcharge(Single CELL) |
Protection voltage |
3800±30mV |
Recovery voltage |
3500±30mV |
||
Protection delay time |
1000±300mS |
||
5 |
Over discharge( Single CELL) |
Protection voltage |
2500±30mV |
Recovery voltage |
2800±30mV |
||
Protection delay time |
1000±300mS |
||
7 |
Primary Over discharge current |
40A±3%A |
|
Primary delay time |
3S±300mS |
||
8 |
Secondary Over discharge current |
Secondary Over current |
60A±3%A |
Secondary delay time |
1S±300mS |
||
9 |
Over charge current |
Over current |
20A±3%A |
Delay time |
5S±300mS |
||
10 |
Communication feedback delay time |
Delay time before sleeping mode |
≤100mS |
Delay time under sleeping mode ( At least two command issued, the first is activated the communication and the second is data responese) |
≤100mS |
||
11
|
Short circuit protection delay time
|
Short circuit protection delay time |
200~600uS |
Recovery Conditions |
Shut down the loading and charging again |
||
12
|
Temperature protection
|
High Temperature Protection in Discharging (±3℃) (Cell temperature) |
65℃ |
High Temperature Recovery in Discharging (±3℃) (Cell temperature) |
55℃ |
||
Low Temperature Protection in Discharging (±3℃) (Cell temperature) |
-10℃ |
||
Low Temperature Recovery in Discharging (±3℃) (Cell temperature) |
-5℃ |
||
High Temperature Protection in Charging (±3℃) (Cell temperature) |
60℃ |
||
High Temperature Recovery in Charging (±3℃) (Cell temperature) |
50℃ |
||
Low Temperature Protection in Charging (±3℃) (Cell temperature) |
0℃ |
||
Low Temperature Recovery in Charging (±3℃) (Cell temperature) |
5℃ |
||
High Temperature Protection in Charging and Discharging (±3℃) (Mosfet temperature) |
85℃ |
||
High Temperature Recovery in Charging and Discharging (±3℃) (Mosfet temperature) |
75℃ |
Note: The basic protection parameter can be modified by PC software!
( Please modified it under the guide of professional engineer! )
No |
Item |
Condition |
Specification |
13 |
Communication Interface |
RS485 |
Support |
14 |
Communication Interface |
URAT |
Support |
15 |
Battery Temperature Monitoring Sensor |
For monitoring the temperature of battery group |
Support |
16 |
Cell Voltage Balancing |
Intelligent Passive consumption equilibrium |
Support |
17 |
Expansion function |
1) Bluetooth module 2) PC software ( USB converting Box ) 3) LCD Display |
Support (Option) |
18 |
Short Circuit Protection |
Support the battery group within 30AH (Relay protection for the capacity more than 30AH) |
Support |
19 |
Self power consumption |
Working Mode ≤35mA |
20.8mA |
Sleeping mode≤300uA |
140uA |
||
Hibernate mode≤20uA |
8uA |
||
20 |
0V charger |
Allowed 0V change |
Not support |
21 |
Recommend working conditions |
Max continuous discharge current |
20A |
Max continuous charge current |
15A |
||
cell capacity |
Software matching |
||
22 |
Appearance |
1) Nothing part deflection 2) The status of solder is all right 3) PCM will not crook 4) Compliance with the appearance standard of BMS manufacturer |
|
23 |
Reliability test |
ESD test :connect 6KV Air 10KV |