About temperature monitor,If you need pls tell us

Model: DG24S 80A 100A 120A 150A 200A 250A  for 3.2V rated LiFePO4 battery /3.7V Rated LiNCM

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

Welcome retail and wholesale both. More discount for volume order!

1.Overview

DG 24S 80A 100A 120A 150A 200A 250A PCB is used for 24series 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 Custmers' feedback

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3. Advantage

 

  

 

4.Technical parameter（The following is an example for 3.7V rated LiNCM battery.     

 If your battery is 3.2V rated LiFePO4, we will set the parameters for LiFePO4 batteries）

	Content	Spec						Unit	Remark
		80A	100A	120A	150A	200A	250A
Discharge	constant discharge current	80	100	120	150	200	250	A
	peak discharge current	250±30	300±50	400±100	500±100	600±100	600±100	A
	Over current protection	250±30	300±50	400±100	500±100	600±100	600±100	A
charge	charge voltage	Series* 4.25						V
	charge current	40	50	60	75	100	125	A
Over charge protection	over charge volt	4.25±0.05						V
	over charge volt protect delay	1						S
	Over charge volt release	4.15±0.05						V
Power balancing	Power balance volt	4.18						V
	balance release volt	4.18						V
	balance current	30±5						mA
Over discharge protection	Over discharge detect  volt	2.7±0.05						V
	Over discharge detect delay	1						S
	Over discharge volt release	3.0±0.05						V
Over  current protection	Over current detect delay	1						MS
	Over current protect release	Off load
Short circuit protection	Short circuit protection	External load short circuit
	Short circuit detect delay	250						uS
	Short circuit detect release	Off  load
Temperature protection	Temp protection	none						℃	Can be customized
resistance	Main circuit resistor	≤20						mΩ
Self-consumption	Working current	≤100						uA
	Sleepy current(when battery is over discharged )	≤20						uA
Working temp	temp range	-40~80						℃

Secification for 3.2V rated LiFePO4

	Content	Spec	Unit	Remarks
Discharge	constant discharge current	80/100/120/150/200/250	A
	peak discharge current	260/300/360/450/500/600	A
charge	charge voltage	90	V
	charge current	80/100/120/200(MAX)	A
Over charge protection	over charge volt	3.75±0.05	V
	over charge volt protect delay	1	S
	Over charge volt release	3.55±0.05	V
Power balancing	Power balance volt	3.5	V
	balance release volt	3.5	V
	balance current	30+-5	mA
Over discharge protection	Over discharge detect  volt	2.2±0.1	V
	Over discharge detect delay	1	S
	Over discharge volt release	2.7±0.1	V
Over  current protection	Over current detect volt	150	mV
	Over current detect delay	1	MS
	Over current protection	80 / 100 / 120 / 150 /200 /250	A
	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	≤20	mΩ
Self- consumption	Working current	≤100	uA
	Sleepy current(when battery is over discharged )	≤20	uA
Working temp	temp range	-30/+80	℃

 

 

5. Product Photo

 

 

 

6. Wiring instruction

 

7. 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.   

8. About Us

9 Why choose us