The active balancing of BMS can only play a limited role. At present, more and more energy storage systems adopt a one-cluster-one-management design, and the consistency of the battery cells is getting better and better.

From the perspective of the operating effect, if active balancing or equalizers are added, it is easy to increase the failure rate. Through the one-cluster-one-management design,

the battery cells of third- and fourth-tier manufacturers can achieve the effect of the top battery cells. Due to the relatively lower price, most of the domestic source-grid side energy storage systems are centralized architectures.

Industry insiders said that large storage systems with centralized architectures also need to solve the problem of balancing between clusters, and the requirements for balancing capabilities are higher than those of string-type systems.

In order to cope with the problem that the passive balancing effect of BMS is insufficient and active balancing is prone to cause failures, more and more energy storage companies are developing their own balancing technology.

However, configuring BMS active balancing or adding DC/DC modules also means higher costs.

Enerkey learned from an interview that the 6.25MWh long-term energy storage system solution launched by Enerkey can add external active balancing equipment when the battery fails in the later stage.

Enerkey's self-developed active balancing device is also used for balancing between batteries, but it is different from conventional BMS active balancing products and is not a conventional DC/DC module. In comparison, it has higher stability and relatively moderate cost.

 

 

Technical Parameters

Product model	16S 2A Smart Active Balancer for 2-16s (EK-16S2EB)
Supported battery type	NCM / LFP(Li-ion/Lifepo4)
Single cell voltage collection range	1.5V~4.5V
Undervoltage protects sleep voltage	APP can be customized Settings :1.5-4.2V
Equilibrium method	Time-sharing single channel transfer, point-to-point energy transfer
Reverse protection	Support disorderly power on detection/protection
Equilibrium current	APP can be customized Settings: 1A~2A
Whether an external power supply is required	When the total battery system voltage is below 24V, An external booster module or an external power supply is required.
Voltage equalization accuracy	APP can be customized Settings :1mV(TYP)
Wire cascading	Support
Power failure detection function	Support
Wrong wire protection function	Support
Fault alarm function	Support
Buzzer	APP can be customized Settings
Power dissipation	At equilibrium≈1W,Stop equilibrium≈0.5W
Operating temperature	-20℃ ~ +55℃
Application	Electric toys, electric balance car/bicycle

 

Packing List

 

 

 Use Manual

Wiring Diagram

EK-16S2EB supports cascading use, and at least one battery between every two equalizers is the "common end of energy exchange". The following uses the 32S as an example to describe how to install and connect cables:

Notice:
1.When used in cascade, there is at least one "energy exchange commonend" between every two equalizers. When welding, please note whetherthe connection here is correct.

2.During cascading use, please check whether the wiring is wrongrepeatedly.lf it cannot be used after connection, please contactafter-sales personnel to consult the corresponding cascade diagram.

 

 FAQ

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.