Product overview
BAL-5624 equalizer controller adopts adopts high-frequency transformer inversion andequipotential isolation coupling energy technology to realize the parallel connection of each seriesof batteries through equipotential isolation coupling. Based on the parallel connection state, eachseries of batteries with different high and low voltages realize energy transmission and distribution,and finally realize the high-efficiency and precise balance of the battery pack.The Taiwan maincontrol chip MCU combines with the ultra-low dynamic impedance inverter to obtain the more than5A balanced current. The precise transformer process and fully symmetrical circuit design canachieve the balanced effect of S 30mV.
And the analyzer adopts latest large-scale high-speed MCU chip of American microchip tocarry out real-time precision detection of each unit of lithium battery pack. The voltage informationcollected by the chip is stored and calculated and compared, and the data is processed anddisplayed on the LCD screen. This detector can detect the voltage of up to 24 series of lithiumbatteries at the same time, and automatically analyze and compare the voltage.Real-timemonitoring equalizing voltage
It is suitable for high-capacity ternary lithium battery pack and lithium iron phosphate batterypack, etc. The maximum equalizing current can reach 5A, and the equalizing voltage differencecan reach 30mV; Forced start switch is added to better solve the problem of poor equalization effect.
Product features
1. Automatically analyzing the maximum voltage difference value and the average voltagevalue of the battery pack.When balancing, it can quickly detect the voltage of each stringof the battery pack.
2. Voltage difference analysis and equalizing voltage dual function.
3. Equipped with multi-mode intelligent voltage detection display, it can monitor the workingprogress of battery pack repair in real time.
4. Nano amorphous isolated fully symmetrical transformer ensures the minimum voltagedifference.
5.American ultra-low internal resistance MOS devices constitute an ultra-low dynamicimpedance inverter circuit. Achieve high power balance.
6.The control and management of intelligent MCU chip realize automatic self balancing;
7. Automatically detect the minimum voltage of the battery, stop working when the batteryenergy is low, and protect the battery from power loss;
8. Overcurrent fuse resistance at each series input end to ensure safety;
9. 1h/3h/4h time-limited equalization time adjustable;
10. Heat dissipation design of inverter under extreme equilibrium state of high voltage difference.
Specification
Product name: 2S-2S4 series 5A lithium battery active equalizer
Apply to：Ternary lithium / Lithium iron phosphate
Applicable voltage：AC110V-220V
Number of applicable batteries: 2S-24S
Weight: 1kg
Maximum equalization current: 5A
Minimum equalization cell: 15mv
Drain interface: 3.18mm
Equalization approach: parallel capacity transfer
Low voltage shutdown: 2.7V/S, 2.5V/S
Voltage measurement accuracy: earth(0.1%RD+0.1%FS)
Explanation of equalizing current, equalizing time, equalizingconnection and equalizing minimum differential pressure1.The equalization current marked on the equalization module and equalizer is themaximum current that can be output or absorbed by the product, and it is also themaximum current allowed to flow through the chip on the product.
2. When the equalizer is actually used to equalize the battery pack, the equalizedcurrent is affected by the following factors:
O Internal resistance of battery pack;
2 Resistance of connecting cable;
③ Contact resistance of connector;
4) Voltage difference between battery cells (cooling condition)
A: The smaller the internal resistance of battery pack, the greater the equilibrium currentB: The smaller the resistance of connecting wires and connectors, the greater theequilibrium current
C: The greater the voltage difference of the battery, the greater the equilibrium current5A current test conditions:
Voltage difference between batteries 2 0.5V, connecting line battery < 8m Q (single wire)Internal resistance of battery < 15mΩ, connector resistance < 4m Ω
3.Measurement method of equalizing current:
Since the equalizing current is affected by the loop resistance, the loop resistance willbe increased and the equalizing current will be reduced when the ammeter is connected,so the access ammeter is not recommended. In addition, disconnecting the equalizingline during normal equalizing operation will lead to the risk of battery short circuit anddamage to the equalizer. Therefore, the test current can only be measured by DC Clamp
ammeter.
4.Equilibrium time correlation
A: Under the condition of the same internal resistance of battery, if it can work inequilibrium with the maximum current, the time will be shorter, and the smaller theresistance of connecting line and connector, the shorter the time will be.
B: The equalization time of high-capacity battery pack will be longer.
C:The smaller the equalizing voltage difference, the longer the time.
D:In the final stage of equalization, the voltage difference is very small, so the currentis also very small, this period takes a long time.
E: When active continuous online equalization is adopted, the equalization state is ideal,and the battery voltage difference can also be controlled between 30mv-80mv. Youdon't need to pay attention to time by this way.
About the connection of equalizer and battery pack:
1.The connection mode of the connector on the equalizer product is based on theconvenience of users' installation and use. However, because the connector has acontact resistance of 3-10mQ, each string of batteries will increase 2x3-10=6-20mΩ,which will greatly reduce the equalization current. it is recommended tocancel the connector and connect it directly with wires;
2.Larger cross-sectional area and shorter connection shall be adopted as far as possiblefor the connecting wire between the battery pack and the battery pack;
3.When direct wire connection is adopted, one end of the equalizer must be welded first,and the battery pack end shall be connected (welded) when it is firmly welded. Payattention to prevent short circuit between wires during operation!
4.In order to obtain a larger balanced current value, it is recommended to use 0.5mm2/Awhen the state machine the connecting wire. If the equalizer is far away from the battery packand needs to be extended, the conductor section needs to be increased proportionally.
About the voltage difference between battery strings after equalization:1.The min voltage difference of 24 series design is <30mV (actually15-20mv);
2.The min voltage difference after equalization is related to the equalization time.
The longer the equalization time is, the smaller the pressure difference is;
3. The minimum voltage difference after equalization is related to the battery internalresistance, connecting line resistance and connector resistance. The smaller theresistance is, the smaller the pressure difference is.
About the voltage difference between battery strings after equalization:
The BAL-5624 battery voltage equalizer adopts the high-frequency transformerinversion and equipotential isolation coupling energy mode to realize the parallelconnection of each series of batteries through the equipotential isolation coupling mode.
Based on the parallel connection state, each series of batteries with different voltages canrealize energy transmission and distribution, and finally realize the high-power precisionbalance of the battery pack. The actual equalization work is carried out by the main controlchip MCU, and the inverter with ultra-low dynamic impedance obtains more than 5Aequalization current. Precise transformer technology and fully symmetrical circuit designcan achieve the equalization effect of s 30mV.
Attention!
Before use, be sure to conect the terminals after the correct wiring, and thenaccording to the battery pack string number,turn on the DIP switch correspondingto the string number on the back of the balance controller.Otherwise the stringnumber will be displayed abnormal or the screen display is garbled.
Wrong or reverse connection of the line sequence will directly damagethe balance controller
Package includes：
1*1set 2S-24S series 5A lithium battery active equalizer
