LWS 4S 20S BMS li ion battery protect board 48V 8S 13S 14S 15S 16S 19S 20S 40A 50A for Electric Vehicle
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- Supplier: Shenzhen Li-Ion Battery Bodyguard Technology Co. Ltd.
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Product Overview
Description
Product Description
Product Paramenters
Description of application effect
(Battery Management System) BMS can extend battery life and make battery work safely.
This model can be used for solar, LED lights, Emergency lights, Digital Equipment, etc.electric scooter,e-bike,tourisr sightseeing vehicle,electric tricycle,low speed ev,emergrncy ups,solar street light,RV&home energy storage......
Product Description
Model | LWS-20S30A-375(13s) |
PCM Size | L120*W63*T10 mm |
battery series | 4S-20S Available |
working current | 30A, 40A, 50A are available |
Usage (Cell Type) | Li-ion battery packs (3.7V/cell) LiFePO4 battery packs (3.2V/cell) |
Application | Electric vehicle, Ebike, etc |
Sample | available |
LWS 4S-20S BMS li-ion battery protect board 48V 8S 13S 14S 15S 16S 19S 20S 40A 50A for Electric Vehicle
PCM Specifications For 48.1V（13S） Li-ion Battery Packs | ||||||
Model:LWS-20S30A-375(13S) | ||||||
No. | Test item | Criterion | ||||
1 | Voltage | Charging voltage | DC：54.6V CC/CV | |||
Balance voltage for single cell | 4.20±0.025V | |||||
2 | Current | Balance current for single cell | 42±5mA | |||
Current consumption | ≤25μA | |||||
Maximal continuous charging current | 40A | |||||
Maximal continuous Discharging current | 40A | |||||
3 | Over charge Protection | Over charge detection voltage for single cell | 4.25±0.025V | |||
Over charge detection delay time | 500mS—1500mS | |||||
Over charge release voltage for single cell | 4.15±0.05V | |||||
4 | Over discharge protection | Over discharge detection voltage for single cell | 2.75±0.08V | |||
Over discharge detection delay time | 1800mS—2500mS | |||||
Over discharge release voltage for single cell | 3.0±0.075V | |||||
5 | Over current protection | Over current detection voltage | 0.1±0.025V | |||
Over charge/discharge current detection current | 120±30A | |||||
Detection delay time | 1000mS-1600mS | |||||
Release condition | Cut load,Automatic recovery | |||||
6 | Short protection | Detection condition | Exterior short circuit | |||
Detection delay time | 200—500uS | |||||
Release condition | Cut load,Automatic recovery | |||||
7 | Resistance | Protection circuitry（MOSFET） | ≤20mΩ | |||
8 | Temperature | Operating Temperature Range | -40～+85℃ | |||
Storage Temperature Range | -40～+125℃ | |||||
Wiring:
1. First connect the B- of the BMS to the total negative pole of the battery pack;
2.The cable starts from the thin black one connecting B-, the second red wire connects the positive pole of the first string of batteries, and the next string is connected in turn to positive pole of the battery,B-,B1,B2...B13; then insert the cable into the BMS;
(The maximum number of strings is 4S-20S strings, the example picture is 13 strings)
(Please weld the wires in order and avoid pseudo solder joints.)
3. Connect Charger C-/Load P- with BMS C-/P- (Use larger size wires)
4. Connect Positive Pole: Charger C+/Load P+ with Battery Pack B+ (Use larger size wires) .
1. First connect the B- of the BMS to the total negative pole of the battery pack;
2.The cable starts from the thin black one connecting B-, the second red wire connects the positive pole of the first string of batteries, and the next string is connected in turn to positive pole of the battery,B-,B1,B2...B13; then insert the cable into the BMS;
(The maximum number of strings is 4S-20S strings, the example picture is 13 strings)
(Please weld the wires in order and avoid pseudo solder joints.)
3. Connect Charger C-/Load P- with BMS C-/P- (Use larger size wires)
4. Connect Positive Pole: Charger C+/Load P+ with Battery Pack B+ (Use larger size wires) .
FAQ
Q: How many Ampere protection circuit boards should choose?
A: It depends on your load power such as electric motor power please contact the sales or technical support before buying.
Q: What is the distinction between same port wiring and different port wiring?
A: The cathode of charger and load is different for different port wiring , the cathode of charger and load is same for same port
wiring and the charging current is equal to the discharge current.
Q: What is the distinction between balance and unbalance function?
A: Equilibrium function is that high voltage cells will be discharged with resistor, waiting for the low voltage cells , to
achieve the each cell voltage is consistent , to improve the battery performance for the whole group.
Q: Do you have Minimum Order Requirement (MOQ)?
A: No, We don’t have MOQ, Different customer have different requirement ,We can provide various capacity and size is per your requirements,Also ODM / OEM is welcome.
Q: How many Ampere protection circuit boards should choose?
A: It depends on your load power such as electric motor power please contact the sales or technical support before buying.
Q: What is the distinction between same port wiring and different port wiring?
A: The cathode of charger and load is different for different port wiring , the cathode of charger and load is same for same port
wiring and the charging current is equal to the discharge current.
Q: What is the distinction between balance and unbalance function?
A: Equilibrium function is that high voltage cells will be discharged with resistor, waiting for the low voltage cells , to
achieve the each cell voltage is consistent , to improve the battery performance for the whole group.
Q: Do you have Minimum Order Requirement (MOQ)?
A: No, We don’t have MOQ, Different customer have different requirement ,We can provide various capacity and size is per your requirements,Also ODM / OEM is welcome.
1. who are we?
We are based in Guangdong, China, start from 2013,sell to Domestic Market(50.00%),Southeast Asia(8.00%),Eastern Europe(5.00%),Mid East(5.00%),Western Europe(5.00%),Northern Europe(5.00%),Southern Europe(5.00%),North America(3.00%),South America(3.00%),Oceania(3.00%),Eastern Asia(3.00%),Central America(2.00%),South Asia(2.00%),Africa(00.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Battery Pack BMS,Lifepo4/Lithium Ion PCM,Protection Circuit Board,Print Circuit Board,Lifepo4/Lithium Ion Battery Pack
4. why should you buy from us not from other suppliers?
The company has advanced production equipment and comfortable office environment, employees hundreds of people. The company Has a complete, scientific quality management system, and the importance of quality and environmental philosophy
5. what services can we provide?
Accepted Delivery Terms: FOB,EXW；
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,PayPal,Western Union,Cash;
Language Spoken:English,Chinese
We are based in Guangdong, China, start from 2013,sell to Domestic Market(50.00%),Southeast Asia(8.00%),Eastern Europe(5.00%),Mid East(5.00%),Western Europe(5.00%),Northern Europe(5.00%),Southern Europe(5.00%),North America(3.00%),South America(3.00%),Oceania(3.00%),Eastern Asia(3.00%),Central America(2.00%),South Asia(2.00%),Africa(00.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Battery Pack BMS,Lifepo4/Lithium Ion PCM,Protection Circuit Board,Print Circuit Board,Lifepo4/Lithium Ion Battery Pack
4. why should you buy from us not from other suppliers?
The company has advanced production equipment and comfortable office environment, employees hundreds of people. The company Has a complete, scientific quality management system, and the importance of quality and environmental philosophy
5. what services can we provide?
Accepted Delivery Terms: FOB,EXW；
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,PayPal,Western Union,Cash;
Language Spoken:English,Chinese
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