Description
Why does the Lithium Battery needs Balance ?
To talk about balance, we have to start with the battery. Even batteries produced in same batches by the same manufacturer have their own life cycles – the capacity of each battery can not be exactly the same. There are two main reasons for this inconsistency:
A. As Normal BMS with Balance ,it usually is a passive Balance with very small balance current , which can not handle all cells effectively in good consistency after few cycles of battery , and the active Balancer will provide an excellent performance for your battery in long run time for keep
all cells in good conditions , and the Max balance current can reach up 5A based on your cells voltage difference .
B.Inconsistency in production
The inconsistencies in production are easy to understand. For example, during the production process, the separators are inconsistent, and the cathode and anode materials are inconsistent, which resulting in inconsistencies of overall battery capacity. For example, the production standard with a batch batteries with 2.5AH , But after the production it may become 2.4 AH,also it may be 2.6AH.
This board operates on the principle of adjacent equalization for battery system ( Li ion or Lifepo4 ). it should be applied together with Battery BMS. The pressure difference resulting from charging and discharging which will triggers the operation of the Balancer board to achieve energy transfer equalization.
C . Electrochemical inconsistency
Electrochemical inconsistency occurs during the battery charging and discharging process. Even if the production and processing of the two cells are exactly the same, the thermal environment can never be consistent during the electrochemical reaction. For example, when making battery modules, the surrounding temperature of battery system will be definitely lower than middle position , which will cause long-term inconsistency in charge and discharge and therefore causes inconsistency capacity with cells , and when the separator film of the battery has imbalance charging and discharging currents for a long time, the battery separator will aged.therefore takes Inconsistence.
Battery inconsistency will affect the performance of the battery pack. Battery packs which were connected in series and follows the short- board effect of the barrel. for battery pack system connected in series, the capacity of the entire battery pack is determined by the lowest cell’s capacity, which results in:
1. Reduce the actual available capacity of the entire battery pack.
2. when The life of the battery pack is reduced, and the capacity is reduced,which will need to increase more times of charge and discharge cycles to let battery work, which will short battery life further.
3. safety performance will be seriously affected when battery consistence were terrible .
Our advantages with active Balance :
Our professional Power management chip which integrated battery overcharge, over-discharge, over-current, short circuit, disconnection, temperature detection and other protections
With large active balancing current, the balancing current can reach up to 10A, and the balancing voltage precision can be within 5mV.
Active will work in those process: 1. Active Balance will work throughout the whole charging process. 2. Controllable Balance in standby process, 3. Automatically starting balance when the voltage difference between cells exceeds 45mV
It solved the problem of low cycle times and short service life of battery packs due to inconsistent battery capacity, voltage difference, and internal resistance difference, making the product safer and more reliable, therefore prolong whole battery work life
significantly .
Solve the problems of low efficiency, small balancing current of general passive balancing methods. The application fields include power tools battery, photovoltaic battery,
Outdoor energy storage battery , battery replacement cabinets, electric bicycles battery ,or EV battery etc.
Transaction terms :
1) Shipment time : once received your order ,we will proceed it quickly within 3~4 working days without problems .order can be cancled within these days ,otherwise we will reject to cancle the order ,because our items can not get back when in the process of shipment . we will inform our buyer if there is a stock problems with the order and arrange a properly agreenment on the shipment schedule by email .
2) Shipment Methods : Client can choose suitable shipment methods based on your demand ,Post air parcel service or Express service , we will ship all orders strictly in according to the selected
shipment methods by our customer . normally , Post parcel shipment time takes 7~60days depends on different countries serivce . and express takes 2~15days to the destination normally .
3)we will not afford the Import duty cost on your side or any other extra fee , buyer has the obligation to do the custom clearance for the order you placed if needs . we will support you in any possible way to do the custom clearance if needs . please know it kindly in advance
4)About the declaration cost : for the item shipped by post air parcel with less than 2KG . we will report less than 20USD commercial value , and for the parcel by the express shipment ,we will report more than 30USD cost depend on total commercial value . please know it kindly in advance . if you have any suggestions ,please feel free to contact us by mail or other ways .
5) About Tracking number : Tracking number will be uploaded and will be informed by the registered email on each Friday ,please pay attention to your email later on for the tracking number update .
6) Quality Service : we will take a full responsibility for any defect product caused by our design and production problems ,warranty time is 12 months since the shipment date . but for any defect product caused by any wrong or slavery application from customers . we will not take the responsibility for that , because for this BMS product ,it do need some skills to make installation . please consult us in advance if you are not clearly with bms connection in the hope of avoid any mistakes of connection . if Buyer damaged the BMS , we can offer the free repairing service to our client , but client should take care of shipment cost .please know it kindly in advance . thanks
Please send email to this address for any questions james@lithiumbatterypcb.com, we will give you reply within 12hours without problems .
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