Battery management system (BMS) 7S20A for lithium-ion 24v battery packs, it can be used with 18650 Li ion cells and Lithium polymer (Lipo) of different size.
The 7S20A Li ion BMS has protection for the battery over charge and over discharge, over current, short circuit, over-temperature. Refer product specification for more details.
The BMS 7S 20A comes with equalization function which facilitate to keep the cells at same level and ensure prolong life. The components used in the BMS is
1) Highly integrated IC,
2) low resistance MOS, and
3) high current equalizer.One pack of BMS contains
1) Open BMS circuit board,
2) Wire with snap in connector for connection between cells and BMS.
7S20Amp 24V Li-Ion BMS
1 Current
Maximal continuous charging current 20A
Maximal continuous Discharging current 20A
2 Over charge Protection
Over charge detection voltage for single cell 4.25V ± 0.025V
Over charge detection delay time 0.8S - 1.2S
Over charge release voltage for single cell 4.15V ± 0.025V3 Over discharge protection
Over discharge detection voltage for single cell 2.8V ± 0.03V
Over discharge detection delay time 0.8S - 1.2S
Over discharge release voltage for single cell 3.00V ± 0.03V
4 Over current protection
DischargeDischarge Over current 70 ~ 130A
Detection delay time 0.7 ~1.3SCharge
Charge Overcurrent Protection 30 ~ 60A
Detection delay time 0.8 ~1.2S
5 Short protection
Detection delay time 160~ 240us
Release condition Cut off load6 Input Voltage
Input voltage DC: 29.05V7 Balance current – 28 – 60mA
8 Current consumption by protection circuit Max 65 µA
9 IR Resistance of PCM ≤ 25mΩ
10 Temperature
Discharge Temperature Protection 70°C±5°CDischarge Temperature Protection 50°C±5°C
11 Dimension
L75*W52*T9mm Max
