4S25A35A45A60A 12V PCM/PCB/BMS for 3.2V lithium battery pack LiFePO4
Product Description :
4S25A35A45A60A 12V PCM/PCB/BMS for 3.2V lithium battery pack LiFePO4 Battery Pack Separate Port
DG4S25-60A PCB is used for 4 series 12V battery pack.
We can design it for various lithium batteries like LiFepo4, LiMn2O4, and Li-polymer etc.
The main functions are: over charge protection, over discharge protection, over current protection, short-circuit protection, temperature protection etc.
◆Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.
◆Strong load ability, constant discharge current 25-60A, use high voltage resistance, low inner
resistance power Mosfet. The heat sink will greatly help cooling.
◆IC itself has power balancing function. The circuit is simple and reliable.
◆Typical voltage detection for each cell. So each battery will be prevented over charged or over discharged. Over current and short circuit protection
function is very reliable.Long time short circuit of the load won’t affect the PCB and the battery.Temperature protection during charging and discharging.
◆Extreme low power consumption. The consumption of the whole device is less than 50uA.
◆PCB use high anti-corrosion, high water resistance, high impedance ESD conformal Coating
（The following is an example for 3.2V rated lithium ion battery.
Model: DG4S25-60A (3.2V Rated LiFePO4 not for 3.7V rated Li-ion battery) with separate port.
Charge wire and discharge wire are separate.
We can customize any PCB from 1S to 30S lithium batteries with different current.
|Discharge||constant discharge current||18||25||35||45||60||A|
|peak discharge current||50||100||130||160||180||A|
|Over current protection||50||100||130||160||180||A|
|Over charge protection||over charge volt||3.65±0.025||V|
|over charge volt protect delay||0.5||S|
|Over charge volt release||3.6±0.05||V|
|Power balancing||Power balance volt||3.6||V|
|balance release volt||3.6||V|
|Over discharge protection||Over discharge detect volt||2.5±0.05||V|
|Over discharge detect delay||0.5||S|
|Over discharge volt release||3.0±0.05||V|
|Over current protection||Over current detect volt||200||mV|
|Over current detect delay||9||MS|
|Over current protect release||Disconnect load|
|Short circuit protection||Short circuit protection||External load short circuit|
|Short circuit detect delay||250||uS|
|Short circuit detect release||Disconnect load|
|Temperature protection||Temp protection||none||℃||Can be customized|
|resistance||Main circuit resistor||≤10||mΩ|
|Sleepy current(when battery is over discharged )||≤20||uA|
|Working temp||temp range||-30~80||℃|
Deligreen 4S 25-60A 12V PCM/PCB/BMS for Lithium Battery LiFePO4 battery
1. Detailed information
2. Product Structure
3. Wiring instruction
4. Packing list
5. Factory overview
1 Which current of the PCB should i choose?
Take 13S 48V pack as an example: Which PCB you should choose depends on the power of your motor or the current limitation of your controller. Below 350W, you can choose 16A. Below 500W, you can choose 18A, Below 800W, you can choose 35A,Below 1KW, you can choose 60A. Above 1200W, the same. If you are not sure, please contact us freely.
2 Can i use bigger size of PCB than it should?
Suppose you need 60A PCB but you chose 80A, that is OK.80A allows higher current.Nothing bad but a bit higher price.But if you choose 50A, sorry it is too small. So you can choose higher spec but can’t choose lower one than it should have been.
3 What kind of charger should i choose?
Lithium battery must be charged by lithium battery charger. You can’t charge it with a lead acid battery charger. The lead acid battery charger might damage MOS pipe of the PCB.
4 If i have PCB, do i need any balancers?
Yes if you can add QNBBM balancers, that would be perfect.The Main function of PCB is to prevent batteries from over charged or over discharged,over heated etc.All the PCB /BMS in the world balance performance is not satisfactory. With balancers added, the batteries lifespan will be longer and the capacity will be fully used.
5 How to judge if my PCB is broken or not ?
If you’d like to judge if the PCB is fine or not, please use a multi-meter and see if the voltage of each cell is close to each other or not.when the volt difference is 1V, the battery will have such performance:driving distance is short, cut off when started, charging time is very short.under such situation , some battery is defective. When the PCB is broken, the battery can’t be discharged when you measured the battery volt is normal.
Accessory Type: Battery Accessories
Brand Name: QNBBM
Model Number: DG4S25A
Application: 3.2V rated lithium battery
Battery series: 4S
Over charge protection: Yes
Over discharge voltage: Yes
Short circuit protection: Yes
Charge port and discharge port: Separate port
Constant discharge current: 25A
Constant peak discharge current : 100A
Temperature protection: Can be customized