- 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 |
|
QS code