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[China]
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Address: Area A, 9th Floor, Building G, Guancheng Low Carbon Industrial Park, Shangcun Community, Gongming Street, Guangming District, Shenzhen, China, 518106
Contact name:Kiwi Xiao
Shenzhen Juyi Science And Trade Co., Ltd. |
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Top Balancing
Top balancing emphasises the charging characteristics of the cell.
The main factor at play here is the cell voltages. The main goal
here is that at the fully charged voltage, the cell capacity of all
units in the battery pack is the same. Top balancing aims to equal
the capacity of the cells when they are at the fully charged
voltage.
Steps to Top Balance the Battery
Disconnect the individual cells from the battery pack.
Set up the cells in a parallel connection. Battery balancing should
never be done in a series connection.
Preset the charging voltage to 3.5 V in a DC supply. Double-check
to see the polarity of the cells is correct.
Monitor the supply voltage and the cell voltages from time to time.
Set the DC supply voltage to 3.65 V as the cell voltages near 3.5
V. Monitor it constantly at this point.
When the current falls down close to 0 A, the cells are charged.
Turn off the DC power supply.
Wait for some time for the cell voltage to become stable and
redistributed among each other.
The cells are now top-balanced. Check the voltage of each cell with
a voltmeter or a multimeter. You should find the same voltage of
each cell to be 3.65 V. Any small variations of some millivolts are
considered negligible and nothing to worry about.
Connect the cells back into your battery pack.
EnerKey BMS Active Balancer 5A 3S 4S 5S 6S 7S 8S 14S 16S 18S 19S
20S 21S LFP LTO LI-ION lifepo4 Balancer Capacitor Balancer | |||
| Product model | EK-C6S5A | EK-C7S5A | EK-C8S5A |
Product strings | 6S | 7S | 8S |
Suitable strings | 4-6S | 5-7S | 6-8S |
Product Size(mm) | L69*W69*T16 | L80*W69.5*T16 | L91*W70*T16 |
Weight with box | 0.16kg | 0.18kg | 0.19kg |
Battery Type | NCM/LFP/LTO | NCM/LFP/LTO | NCM/LFP/LTO |
Suitable capacity | 30ah-300ah | ||
| Voltage equalization accuracy | 5mV (typical value) | ||
Balanced Cascading | Support balanced cascading for battery packs, for example , it can
cascade for 11S , 24S ,36S , 48S....and so on | ||
Single cell voltage collection range | NCM/LFP version : 2.7V-4.2V | ||
LTO version : 1.8-4.2V | |||
Undervoltage protects sleep voltage | NCM/LFP version＜2.7V | ||
LTO version＜1.8V | |||
| Under voltage protection Start balancing voltage | NCM/LFP version: 2.835V | ||
| LTO version: 1.89V | |||
Equilibrium method | Patented (Patent No.: ZL 2019 1 1259513.3) balanced architecture
Fit capacitor method, the entire battery pack is balanced at the
same time. Connect to the battery pack for automatic balancing (default). You can add a switch to manually turn on or off balancing. | ||
Equilibrium current | 0.1V Differential pressure 1A Balanced current, | ||
the differential pressure is proportional to the balanced current, | |||
the maximum allowable operating current is 5.5A | |||
External power supply | No need for an external power supply, | ||
relying on the internal energy transfer of the battery to achieve
sdjacent equalization. | |||
| Quiescent operating current | 7mA, the total string draws power | ||
Sleep standby current | 0.1mA(typical value) | ||
Operating Temperature | -20℃ ~ +60℃ | ||
NOTE:As shown in the figure above,there can be multiple common ends of energy exchangeso that the efficiency of equilibrium will be higher;It is also possible to use only one common end of theenergy exchange atthejunction of two modules.The other free feet are suspended, and it is best todistribute the number of strings equally on each board.If you need the cascade diagram for more strings, Please contact our online service, Thanks.
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.
