Heltec 10A 4S-24S feedback type energy transfer active equalization Balancer


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Balance type:

Energy transfer. That is, a battery with a high voltage charges a battery with a low voltage.

It does not only refer to adjacent battery voltages, but is between the high voltage and the low voltage in all batteries.

Classification of string numbers:

There are 5 kinds of string numbers.
Namely: 4 S, 8 S, 16 S, 20S, 24S. The number of strings is backward compatible, such as a 24-string equalization board, which can balance 4-24 strings of battery packs.
Packing method: plastic case package.
4S 8S are packaged in a plastic case. Size: 120*60*25mm
16S, 20S, and 24S are packaged in a plastic case. Size: 150*120*35mm

Balanced current:

4S and 8Sequalization boards, with a voltage difference of 0.1V, the equalization current is 1.5A.
16S 20S, 24S equalizing board, for every 0.1V voltage difference, the equalizing current is 1.2A.

Balanced start method:

There is no pressure difference demand, that is, as long as there is a pressure difference, there will always be a balanced current.
Balance the number of batteries in real time: All batteries are balanced simultaneously.

A note about equalizing current:

In general, everyone understands that the equalization current is a fixed current of several A. Our active equalization board, the equalization current, is variable, not a fixed several A.
Taking 8 strings of equalization boards as an example, since the equalization current is determined by the maximum voltage difference of the battery, the actual equalization current we measured is every 0.1V voltage difference, and the equalization current is 1.5A.
How to understand this 1.5A? For example, the highest voltage is 3.5V and the lowest voltage is 3.3V, that is, the maximum voltage difference of 0.2V at this time. At this time, a balanced current of 3A can be measured.

The equalization current can be measured on each equalization line. Don’t get me wrong, not every line has a 3A equalization current, but the maximum is 3A. If the battery voltage difference is relatively large and the consistency is a little bit worse, for example, the difference between the highest and lowest voltage is 0.5V, then it is normal to reach an equilibrium current of 6-7A. The balanced effect is the most convincing.

(The greater the pressure difference, the greater the equalization current. If the pressure difference is very small, it does not matter whether there is an equalization or not.)

References and suggestions:

1. When wiring, please unplug the wiring terminals to prevent the wrong sequence or short circuit. After connecting the wires, test and verify the wiring sequence.

2. For multi-string equalization boards with two plugs, after connecting the wires, please insert the small plug first, that is, the 5-position plug, which is also the low-voltage side terminal. Insert the large plug after 10 seconds.

3. The first time you use the balance, please ensure that the battery is fully balanced. Maybe it will take longer, but this is a prerequisite to ensure that the battery will maintain good consistency for a long time in future use. Practical operation: Connect the equalization board, charge, and keep the charging state all the time, so that each string of batteries is kept in a fully charged state.
Don’t worry, with the aid of the balance board, the battery voltage can achieve the effect you want, for example, let all the batteries reach 3.6V or more. Confidence in our products is also confidence in our own battery packs.


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