Shenzhen Juyi Science And Trade Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 1000000pcs per day |
| Delivery Time | 3-5days |
| Packaging Details | Strong paper box +EVA Foam |
| Product Name | 4S 120A SIB Battery BMS |
| Copper Thickness | 2oz |
| Application | Electric Motorcycle |
| Board Thickness | 1.6mm |
| Battery Type | Li-ion/Lifepo4/Lto/SIB |
| Allowable Operating Voltage Range | 0-30V |
| Rated Discharge Currenturrent | 120A |
| Peak Starting Current | 300A |
| Used For | Lithium Battery Protection Board |
| Keywords | 4S BMS |
| Base Material | FR-4 |
| Surface Finishing | Lead-free spray tin |
| Product Size | L75xW68xT15mm |
| Weight with Package | 0.08kg |
| Brand Name | Enerkey |
| Model Number | EK-BM3R4S120A |
| Certification | ISO9001/CE/ROHS |
| Place of Origin | Shenzhen, China |
View Detail Information
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 1000000pcs per day |
| Delivery Time | 3-5days | Packaging Details | Strong paper box +EVA Foam |
| Product Name | 4S 120A SIB Battery BMS | Copper Thickness | 2oz |
| Application | Electric Motorcycle | Board Thickness | 1.6mm |
| Battery Type | Li-ion/Lifepo4/Lto/SIB | Allowable Operating Voltage Range | 0-30V |
| Rated Discharge Currenturrent | 120A | Peak Starting Current | 300A |
| Used For | Lithium Battery Protection Board | Keywords | 4S BMS |
| Base Material | FR-4 | Surface Finishing | Lead-free spray tin |
| Product Size | L75xW68xT15mm | Weight with Package | 0.08kg |
| Brand Name | Enerkey | Model Number | EK-BM3R4S120A |
| Certification | ISO9001/CE/ROHS | Place of Origin | Shenzhen, China |
Functions of the BMS
Fitting an EV with a BMS can improve safety. The battery management system performs the following four functions:
1. Monitoring battery parameters
This is the primary function of a BMS. It monitors the state of a cell as represented by parameters such as:
Voltage—indicates a cell’s total voltage, the battery’s combined voltage, maximum and minimum cell voltages, and so on.
Temperature—displays the average cell temperature, coolant intake and output temperatures, and the overall battery temperature.
The state of charge of the cell to show the battery’s charge level.
The cell’s state of health—shows the remaining battery capacity as a percentage of the original capacity.
The cell’s state of power——shows the amount of power available for a certain duration given the current usage, temperature, and other factors.
The cell’s state of safety——determined by keeping a collective eye on all the parameters and determining if using the cell poses any danger.
The flow of coolant and its speed.
The flow of current into and out of the cell.
| Item type | Parameters | |||||||||
| 1 | Parameter Overview | Product Model | EK-BM3R4S120A | |||||||
| Product Size(mm) | L75*W68*T15 | |||||||||
| Product Weight(kg) | 0.08 | |||||||||
| Product Material | FR-4 / Lead-free spray tin | |||||||||
| Applicable battery type | Lifepo4 | Li-ion | Lto | SIB | ||||||
| Applicable battery string number | 3S / 4S | 3S / 4S | 3S / 4S | 3S / 4S | ||||||
| Rated discharge current | 120A | 120A | 120A | 120A | ||||||
| Peak starting current | 300A | 300A | 300A | 300A | ||||||
| Item type | Trigger (time) | Trigger (time) | Trigger (time) | Trigger (time) | Trigger (time) | Trigger (time) | Trigger (time) | Trigger (time) | ||
| 2 | Charging protection | Overvoltage protection voltage value | 3.65V/1S | 3.50V/1S | 4.25V/1S | 4.05V/1S | 2.85V/1S | 2.75V/1S | 3.95V/1S | 3.80V/1S |
| Balanced phase difference voltage value | Trigger voltage difference 30mV / trigger time 0.5S / balance time 10S cycle | |||||||||
| Balanced voltage value | 3.45V | 3.70V | 2.50V | 3.10V | ||||||
| Overcurrent value | 120A/2S, disconnect charger to recover | |||||||||
| Low temperature value | Charge over-temperature protection 60℃/2S / Release 55℃/2S | |||||||||
| Overtemperature value | Charging low temperature protection -5℃/2S / Release 0℃/2S | |||||||||
| 3 | Discharge protection | Undervoltage protection voltage value | 2.30V/1S | 2.70V/1S | 2.75V/1S | 3.0V/1S | 1.70V/1S | 1.80V/1S | 1.50V/1S | 2.00V/1S |
| ①Overcurrent protection value | 150A/2S, disconnect load or activate charging | |||||||||
| ②Overcurrent protection value | 250A/0.5S, disconnect load or activate charging | |||||||||
| Short circuit protection value | 500A/128uS, disconnect load or charge activated | |||||||||
| Low temperature value | Discharge over-temperature protection 65℃/2S, release 60℃/2S | |||||||||
| Overtemperature value | Discharge low temperature protection -20℃/2S, release -10℃/2S | |||||||||
| 4 | Others | Standby current consumption | 25uA | |||||||
| Motherboard lock voltage | / | |||||||||
Wiring precautions:
1. Installing the protective board requires a certain amount of technical electronic knowledge.
2. When wiring, first connect the B- wire at the soldering pad position to the total negative terminal of the battery (the B- wire should be soldered to a short and thick wire) and solder the wired terminal to the battery pack first, and then insert the protective plate.
3. The connection between the battery terminal B- and the protection board terminal B- should be short and thick, otherwise it will cause the protection board to charge and discharge in advance and malfunction.
4. You need to use thick wires when wiring P+/P-. Wires that are too thin and too long will burn the board!
Q1. Why did we choose you?
* We can provide you with efficient after-sales service, with more than 10 years of strong technical support.
* Products have passed FCC, CE, ROHS and other international standards certification.
* We can provide you with factory price, Welcome you to visit our factory and production process.
Q2. What is your product range (type)?
*We mainly do battery management systems in the fields of power batteries, energy storage batteries and consumer batteries.
*Mainly used for LFP, Li-ino and LTO batteries.
Q3: How do I know which kind of material & type my battery is ?
*Please look the battery body, If the normal voltage of your battery shows 3.2V, The battery is LiFePo4.
*If the normal voltage of your battery shows 3.6V or 3.7V, the battery is Li-ion or Lto battery.
Q4. Do you have minimum order requirements?
Can it be customized? What is the lead time for samples and batches?
*Our minimum order quantity is 1 piece, ODM customization is available.
* 1~3 days delivery of existing samples, 3~10 days delivery of customized samples.
Q5: What if i can't use it?
*Regular products have instructional videos, We can also support online video call guidance from engineers.
Q6. What are your terms of payment?
*We accept wire transfer and cash payment, all negotiable. Payment method :visa, mastercard, T/T, PayPal, APPLE_PAY, GOOGLE_PAY, GC_REAL_TIME_BANK_TRANSFER, RMB
Q7. How do you guarantee the quality?
* All our products are subjected to professional laboratory 100% testing, as well as repeated aging tests.
* Obtained FCC, CE, ROHS and other international standard certification.
* Provide 3 years after-sales warranty service. Free spare units for replace in 3 years.
Q8. How to choose a BMS suitable for our battery?
*Depending on the voltage and current that matches your battery, you can consult our customer service and we will provide it for you equipped with the most suitable battery management system.
Q9. How can i contact you?
*We have 7x24 hours online service, Please leave us a message online.
*You can also contact us by Email, WhatsApp, WeChat, etc(see below). We are so glad to work with you.
Company Details
Business Type:
Manufacturer
Year Established:
2015
Total Annual:
10000000-50000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Shenzhen Juyi Science And Trade Co., Ltd. and EnerKey BMS Technology Co., Ltd. is a new energy enterprise engaged in the research and development of lithium battery protection panels (intelligent BMS). EnerKey BMS specializes in the field of power solution development, has accumulated m... Shenzhen Juyi Science And Trade Co., Ltd. and EnerKey BMS Technology Co., Ltd. is a new energy enterprise engaged in the research and development of lithium battery protection panels (intelligent BMS). EnerKey BMS specializes in the field of power solution development, has accumulated m...
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