Battery Management System

Battery Management System for 72V 20S40A battery pack configuration of  Lithium Ion cells.

Over Charge Protection:              Yes

Over Discharge Voltage:              Yes

Short Circuit Protection:              Yes

Cell balancing                                  Yes

Over Current Protection              Yes

BMS Size                                           128X65X12 mm (LXWXH)

Specification:-

Discharge 

Continuous Discharging Current                                40A

Over discharge Current Detect Voltage                     100±20A

Charge 

Charging Voltage                                                           84V

Charging Current                                                           20A

Over charge protection

Over Charge Protection Voltage                                 4.25±0.05V

Release delay of Single Over Charge Protection      1S

Over Charge Release Voltage                                      4.15±0.05V

Cell balancing  

Cell balancing Detection Voltage                                4.125V

Cell balancing Current                                                  30±5mA

Over discharge protection    

Over Discharge Detect Voltage                                   2.7±0.05V

Over discharge Detect Delay Time                             1S

Over Discharge Release Voltage                                3.0±0.05V

Charge/Discharge Overflow protection  

Discharge Current Level 2 Protection Current         100±20A

Discharge Current Level 2 Protection delay             1S

Over Current Protection Condition                            Disconnect the load

Short Circuit Protection  

Protection Condition                                                    Short circuit of External Load

Detection Delay Time                                                   250 uS

Protection Release Condition                                     Disconnect the load

Temperature Range                                                   -20ºC ~ 60ºC

Internal Resistance                                                    ≤20mΩ

Lithium Battery management system (BMS) or protection control module PCM for  2S3A lithium-ion 3.7v battery. It can be used with 18650 cells, 21700 cells and Lithium polymer cells of different size.

The 2S3A Li-ion BMS has following protections

• Over charge protection
• Over discharge protection,
• Over current protection,
• Short circuit.

Refer PCM 2S3A product specifications for more details.

The BMS 2S 3A is must to protect the Lithium cells from extreme load conditions and ensure prolong life. The components used in the BMS are
1) Highly integrated IC,
2) low resistance MOS.

3) Additional Nickel Strip for ease of assembly with cells

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.