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Home > Battery Management System>200A/250A Smart BMS 4S LiFePO4 For 12V LiFePO4 Battery

  

200A 250A Smart Bms 4S LiFePO4 With UART, BlueTooth, RS485 CAN, functions For 4S 12V LiFePO4 Battery

 

 

4S BMS LiFePO4

 

 

 

Product Summary


1. Professional high current wiring design & workmanship, thus can withstand the shock of high current
2. Using fully enclosed heat-dissipating glue and a double-sided heat dissipation design, heat is dissipated in time, and the heat dissipation effect is better than others.
3. Dustproof, shockproof, anti-squeezing, and other protective functions
4. Complete overcharge, over-discharge, over current, short circuit, and equalization functions

 

 

 

FULL INTELLIGENT FUNCTION

 

 

 

 

Full intelligent function

 

 

 

PRODUCT PARAMETERS

 

(4S 200A-250A)



No

Description

Specification

Remarks

1

Discharge

Continue discharge current

200A

250A

 

2

Charge

Charge voltage

14.6V

 

Charge current

100A

125A

 

3

Over charge protection

Over charge detect voltage

3.75±0.05V

 

Over charge protection delay

1S

 

Over charge release voltage

3.65±0.05V

 

4

Balance

Balance detect voltage

3.2V

 

Balance current

30±5mA

 

Balance opening condition

1.     On a charge

2.     Achieve balance detect voltage

3.     Achieve 50mv

5

Over discharge protection

Over discharge detect

2.2±0.01V

 

Over discharge detect delay

1S

 

Over discharge release voltage

2.3±0.01V

 

6

Charging over current protection

Charging over current protection

current

300±30A

375±38A

 

Over Charge current detect delay

1S

 

Over Charge current protection release condition

Off load

 

7

Discharge

over current

protection

Discharge over current protection current

300±30A

375±38A

Can set as

required

Over discharge current detect delay

1S

Can set as

required

Over discharge current

protection release condition

Off load

8


Short Circuit protection condition

Short circuit of external load

Short circuit detect delay

320uS

 

Short circuit protection release

Off load

9

Temp Protect

Charge Temperature protection degrees

-40~65

Recover-35

Recover 60

discharge Temperature protection degrees

-40~70

Recover-35

Recover 65

Release Condition of temperature protection

Recovery temperature reached and load disconnected

10

Means of communication

UART/ BT/CAN/RS485 Customization Option

11

Inner Resistance

Main Circuit Conduct Inner resistance

<20mΩ

 

12

Self

Consumption

Working current

20mA

 

Sleeping current

800uA

 

13

Working Temp

Temp range

-20~70

 

14

Storing Temp1

Temp range

-40~80

 




BMS WIRE DIAGRAM

BMS WIRE DIAGRAM

Precautions for smart BMS:

 

1. The connection sequence of the smart BMS


The wiring sequence of the cable is the same as the hardware board. After confirming that the cable is soldered correctly, and the accessories that come with the product (such as: temperature control standard/power board option/Bluetooth option/GPS option/display option/custom communication Interface optional)
Install on the BMS, and then plug the cable into the BMS socket; the blue B-wire on the BMS is connected to the total negative electrode of the battery, and the black P-wire is connected to the negative electrode of the charge and discharge.

 

2. The BMS needs to be activated for the first use


Method 1: Activate the Power display panel, there is an activation button on the Power display panel.
Method 2: Charge activation.
Three, parameter modification
The number of strings of the BMS and the BMS parameters (Li-ion BMS, LiFePO4 BMS, LTO BMS) have default values when they leave the factory, but the capacity of the battery pack needs to be set according to the actual capacity AH of the battery pack. If the capacity AH is not correct Set, the percentage of remaining power will be inaccurate. Other protection parameters can also be set according to the customer's needs (It is not recommended to modify the parameters casually).

 


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