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Li-Ion Battery BMS Board 8.4V 2S 8A BMS Protection Board For 18650 Cell Lithium Battery

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Li-Ion Battery BMS Board 8.4V 2S 8A BMS Protection Board For 18650 Cell Lithium Battery

Country/Region china
City & Province shenzhen
Categories Optoelectronic Displays
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Product Details

 
Enerkey BMS Protect Board 8.4V 2S 8A Li-Ion Battery BMS Board For 18650 Cell Lithium Battery
Product Description
Electric Parameter
 
 
 
 
 
 
PCM Specifications For 7.4V(2S)Li-ion Battery Packs
 
 
 
 
 
 
Model:JW-B2S8A-014
 
 
 
 
 
 
NO.
Project
 
Min.
Typ.
Max.
Unit
 
1
 
voltage
Charging voltage
 
8.4
 
V
 
 
Balance voltage for single cell
/
/
/
V
2
Current
Balance current for single cell
/
/
/
mA
 
 
Current consumption
 
 
20
uA
 
 
Maximal continuous charging current
 
 
8
A
 
 
Maximal continuous discharging current
 
 
8
A
 
3
 
Over charge protection
Overcharge detection voltage for single cell
4.225
4.25
4.275
A
 
 
Overcharge detection delay time
0.5
 
1.5
S
 
 
Overcharge release voltage  for single cell
4.00
4.05
4.100
V
 
 
4
 
Over discharge protection
Overdischarge detection voltage for single cell
2.438
2.50
2.562
V
 
 
Overdischarge detection delay time
10
 
150
mS
 
 
Overdischarge release voltage for single cell
2.938
3.0
3.062
V
 
 
 
 
5
 
 
 
Overcurrent protection
Over current detection voltage
 
620
 
mV
 
 
Over current detection current
15
20
25
A
 
 
Detection delay time 
5
 
15
mS
 
 
Release condition
Cut load
 
 
 
 
 
6
 
 
Short protection
Detection condition
Exterior short circuit
 
 
 
 
 
Detection delay time
200
 
500
μS
 
 
Release condition
Cut load
 
 
 
7
Resistance
Protection circuitry (MOSFET)
 
 
20
 
8
Temperature 
Operating Temperature Range
-40
 
65
 
 
Storage Temperature Range
-40
 
125
Product Use Tutorial

On the other hand, a BMS is a more sophisticated system that manages and protects a battery pack as a whole. A BMS typically includes multiple protection boards, along with additional components such as sensors, controllers, and communication interfaces.

A BMS monitors the voltage, temperature, and other parameters of each individual cell in the battery pack and adjusts the charging and discharging rates to ensure that the cells stay within safe limits.

It also provides advanced features such as cell balancing, which helps to equalize the charge levels of the cells in the pack to maximize the pack's capacity and lifespan.

 

In summary, a protection board is a simple circuit that protects a single cell from overcharging, over-discharging, and short circuits, while a BMS is a more advanced system that manages and protects a battery pack as a whole,

providing features such as cell balancing and sophisticated monitoring and control capabilities.

 
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