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 LiFePO4 LiNCM LMO
4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO
4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO
4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO
4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO
4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO

4S 10A 45A 60A PCM/PCB/BMS Protection Circuit Board for LiFePO4 LiNCM LMO

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Product Description :

4S 10A 45A 60A PCM/PCB/BMS  Protection Circuit Board for LiFePO4 LiNCM LMO

(1)

Model: DG4S 

Constant discharge current: 15A 25A 35A 45A 60A

Peak discharge current: 50A 60A 100A 160A 180A

 

We can customize any PCB from 2S to 24S lithium batteries with different current.

1.Overview

DG4S PCB is used for 16series 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.

 

2. Advantage

◆Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.

◆Strong load ability, constant discharge current 45A/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

 

3. FAQ

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.   

  

 

3.Technical parameter

(The following is an example for 3.7V rated lithium ion battery.

If your battery is 3.2V rated battery, we will set the parameters for it, please leave message to us. )

  Content Spec Unit Remark
10A 15A 25A 35A 45A 60A    
Discharge constant discharge current 10 15 25 35 45 60 A  
peak discharge current 30 50 60 100 180 180 A  
Over current protection 30 50 60 100 180 180 A  
charge charge voltage 16.8 V  
charge current 10 10 10 20 30 50 A  
Over charge protection over charge volt 4.25±0.025 V  
over charge volt protect delay 0.5 S  
Over charge volt release 4.19±0.05 V  
Power balancing Power balance volt 4.18 V  
balance release volt 4.18 V  
balance current 35±5 mA  
Over discharge protection Over discharge detect  volt 2.8±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 150 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  
Self-consumption Working current ≤40 uA  
Sleepy current(when battery is over discharged ) ≤20 uA  
Working temp temp range -30~80  

5. Product Photo

4s2

4s

16S3

six advantages of BMS

IP67

6. Wiring instruction

分口接线图同口接线图详情

 

(1)

Model: DG4S 

Constant discharge current: 15A 25A 35A 45A 60A

Peak discharge current: 50A 60A 100A 160A 180A

 

We can customize any PCB from 2S to 24S lithium batteries with different current.

1.Overview

DG4S PCB is used for 16series 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.

 

2. Advantage

◆Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.

◆Strong load ability, constant discharge current 45A/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

 

3. FAQ

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.   

  

 

3.Technical parameter

(The following is an example for 3.7V rated lithium ion battery.

If your battery is 3.2V rated battery, we will set the parameters for it, please leave message to us. )

  Content Spec Unit Remark
10A 15A 25A 35A 45A 60A    
Discharge constant discharge current 10 15 25 35 45 60 A  
peak discharge current 30 50 60 100 180 180 A  
Over current protection 30 50 60 100 180 180 A  
charge charge voltage 16.8 V  
charge current 10 10 10 20 30 50 A  
Over charge protection over charge volt 4.25±0.025 V  
over charge volt protect delay 0.5 S  
Over charge volt release 4.19±0.05 V  
Power balancing Power balance volt 4.18 V  
balance release volt 4.18 V  
balance current 35±5 mA  
Over discharge protection Over discharge detect  volt 2.8±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 150 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  
Self-consumption Working current ≤40 uA  
Sleepy current(when battery is over discharged ) ≤20 uA  
Working temp temp range -30~80  

5. Product Photo

4s2

4s

16S3

six advantages of BMS

IP67

6. Wiring instruction

分口接线图同口接线图详情

Model Number: DG4S45A60A
Brand Name: QNBBM
Accessory Type: Battery Accessories
Application: LiFEPO4 battery,LiMn2O4 et
battery series: 4S
over charge protection: yes
short circuit protection: yes
over discharge voltage: yes
with heat sink: yes
with temperature monitor: yes
charge port and discharge port: common
constant charge current: 45A 60A
constant discharge current : 45A 60A


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