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Application of high-efficiency energy transfer battery equalizer technology

(Summary description)The energy transfer battery equalizer: The use of cascaded batteries can increase the utilization rate of the battery and extend the life cycle of the battery. It is of great significance in terms of energy saving and environmental protection.

Application of high-efficiency energy transfer battery equalizer technology

(Summary description)The energy transfer battery equalizer: The use of cascaded batteries can increase the utilization rate of the battery and extend the life cycle of the battery. It is of great significance in terms of energy saving and environmental protection.

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The energy transfer battery equalizer: The use of cascaded batteries can increase the utilization rate of the battery and extend the life cycle of the battery. It is of great significance in terms of energy saving and environmental protection.
 energy transfer battery equalizer
Disadvantages of parallel first and then series: the selection of cell battery connection lines and busbars is very important, otherwise it will cause differences in battery charging and discharging, and individual battery faults will affect a parallel unit, which has a relatively large impact on capacity. Affect the battery life; advantages: easy to manage, if you add a energy transfer battery equalizer, only one set is enough.
  
The advantages of the energy transfer battery equalizer first in series and then in parallel: easy to connect, easy to repair, can quickly detect and deal with faulty batteries, easy to maintain, the unit battery capacity in each string can be different, the battery utilization rate is high, and the capacity can be arbitrary Expansion, increase the backup time, improve the reliability, especially suitable for data centers; Disadvantage: If you increase the energy transfer battery equalizer, you need multiple sets.
  
The following batteries cannot be reused: one is the battery with large leakage current; the second is the battery with the appearance of deformation, such as the expansion of the outer casing; the third is the battery with leakage.

Echelon energy transfer battery equalizer
  
Even if the screening of cascade batteries is very strict, it is difficult to ensure the consistency of the batteries. Even if the batteries are assembled together, there will still be different degrees of difference after dozens of charging and discharging cycles, and this difference will vary with the use time. As the extension gradually increases, the consistency will become worse and worse, which is obviously manifested as the gradual increase in the voltage difference between the batteries, and the effective charging and discharging time becomes shorter and shorter. A large amount of test data found that battery packs with poor consistency have the following characteristics:
  
1. The voltage of the energy transfer battery equalizer unit battery presents obvious high and low staggered and irregular distribution;
  
2, the remaining capacity of the energy transfer battery equalizer unit battery presents an irregular discrete distribution;
  
3. The internal resistance of the energy transfer battery equalizer unit also presents an irregular discrete distribution.
 

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