ENS-2405LI Lithium Battery Balance Maintenance Instrument

ENS-2405LI Lithium Battery Balance Maintenance Instrument

ENS-2405LI Lithium Battery Balance Maintenance Instrument is used to quickly solve the problem of inconsistent lithium battery voltage, and can also create any battery voltage difference. It is applicable to various types of lithium battery packs, it is an ideal instrument for battery manufacturers and distributors to test batteries.

Model:ENS-2405LI

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Product Description

Product Introduction of ENS-2405LI Lithium Battery Balance Maintenance Instrument

ENS-2405LI Lithium Battery Balance Maintenance Instrument is used to quickly solve the problem of inconsistent lithium battery voltage, and can also create any battery voltage difference. It is applicable to various types of lithium battery packs, it is an ideal instrument for battery manufacturers and distributors to test batteries.


Product Features of ENS-2405LI Lithium Battery Balance Maintenance Instrument

1). Supports 2~24 strings of lithium battery packs.


2). Support ternary lithium battery, LFP battery, Titanic acid lithium battery.


3). Constant resistance 1 ohm discharge balance, large balance current; ternary lithium battery up to 4A, LFP battery up to 3A.


4). Display the voltage of each string, the total voltage, the highest string voltage, the lowest string voltage, the maximum voltage difference of the battery pack, the average voltage, the balance voltage, and the number of battery strings.


5). Fool-style operation, no need for any settings, automatic identification of the number of strings and equalization voltage, easy to use.


6). After the equalization is completed, it will automatically stop, and an alarm will sound, indicating that the equalization is completed.


7). Support 1.5V~4.5V battery, alarm sound and display when the voltage exceeds the range.


8). Reverse alarm and prompt.


9). There are reverse connection, overvoltage (greater than 4.5V), low voltage (less than 1.5V) protection functions.


10). The time to complete an equalization is incomparable to power supply equalization and energy transfer equalization. Among the three equalization methods (power supply equalization, energy transfer equalization, and discharge equalization), discharge equalization is safe and efficient.


11). Lithium battery pack factory, electric car factory, personal lithium battery DIY good assistance.


Balance Method of ENS-2405LI Lithium Battery Balance Maintenance Instrument

Supplementary method:

Advantage: Supplement energy from the outside, and supplement the low-voltage string voltage to the highest-voltage string voltage without wasting the energy of the cell itself.


Disadvantage:

1). The closer the cell voltage is to full, the slower the equalization speed.


2). Because the equalization is directly connected to the cell through the BMS line, it does not pass through the protection board. If there is some kind of accident, the cell may be overcharged and it is dangerous.


Energy transfer method

Advantage: The energy of the high voltage string is transferred to the low voltage string, and there is no other energy loss except the efficiency loss.


Disadvantage:

1). The smaller the string voltage difference of the cells, the slower the equalization speed, that is, each equalization will gradually change from a large voltage difference to a small voltage difference, so the equalization current will gradually become smaller, even if it is The energy transfer of 20A is balanced, and when the voltage difference is as small as tens of MVs, the balanced current will also become smaller.


2). Although it is energy transfer, it also charges the battery cells. It is also possible that in the event of some kind of accident, the battery cells will be overcharged and dangerous.


3). Discharge method

Advantage

1). Don't charge the battery, don't worry about overcharging.


2). The speed of the entire equalization process is the same, and the equalization speed is fast.


Disadvantage: Since the equalization method is to discharge the energy of the high-voltage string until it is equal to the lowest voltage string, the excess energy is wasted in vain.


Some comparisons of the three approaches:

1). Safety: Recharge method < Energy transfer method < Discharge method


2). Speed: energy transfer method = charging method < discharge method


3). Loss: Compensation method < Energy transfer method < Discharge method


Technical Specifications of ENS-2405LI Lithium Battery Balance Maintenance Instrument


Charge and discharge voltage range
2-4.5v
Charge and discharge current range
0-4A
Power Input - AC
Single-phase AC 220V, the frequency range is 40-60Hz.
Number of battery strings
2 channels, 2-24 strings
Operation Method
One button start-up
Display
4.3 inch TFT LCD screen
Voltage measurement accuracy
±0.5%FS+0.1V
Current measurement accuracy
±1%FS+0.1A
Group voltage display accuracy
0.01V
Group current display accuracy
0.1A
Discharge current control accuracy
±1%FS
Emergency stop
High voltage DC switch 120A
Reverse connection protection
Support
Abnormal protection
Power line power failure protection, main cable power failure protection
Alarm prompt
LCD + buzzer
Safety test
Withstand-voltage test
AC input-chassis: 2200Vdc 1min AC input-chassis
DC input-output: 2200Vdc 1min DC input-chassis
Working temperature
Cooling
Forced air cooling
Temperature
Operating temperature range: -5~50℃; storage temperature: -40~70℃
Humidity Relative Humidity 0~90%(40±2℃)
Altitude
Rated 2000 meters above sea level

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