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The use of energy transfer battery balancer technology

(Summary description)The use of a large current, energy transfer battery balancer can limit the prevention of overcharge, overdischarge and thermal runaway faults of the attenuated battery.

The use of energy transfer battery balancer technology

(Summary description)The use of a large current, energy transfer battery balancer can limit the prevention of overcharge, overdischarge and thermal runaway faults of the attenuated battery.

Information

The use of a large current, energy transfer battery balancer can limit the prevention of overcharge, overdischarge and thermal runaway faults of the attenuated battery. Even if the capacity decay of the battery pack has formed the fact that the consistency has deteriorated, its decay speed can be reduced very well. By automatically forcing the voltage to maintain consistency, it can also increase the effective capacity of the battery pack to a certain extent and extend the battery pack’s The cycle life, in particular, significantly reduces repair and maintenance costs.
  energy transfer battery balancer
   A high-power, high-efficiency, real-time, dynamic transfer type energy transfer battery balancer technology has been successfully developed. It also incorporates the self-invented two-way synchronous rectification technology (patent applied for: a transfer type real-time energy transfer battery balancer with two-way synchronous rectification function, this is a two-way synchronous rectification technology that does not require a synchronous rectification chip, not only the equipment cost is substantial It reduces, and greatly improves the equalization current and equalization efficiency. It has achieved a breakthrough in the equalization technical indicators, and has the following characteristics:
  
  1. Large balance current range. A large equalization current means that the equalization speed is very fast, see the attached table. At present, the enhanced lithium energy transfer battery balancer has realized that the relationship between the equalizing current and the voltage difference is about 1A/13mV. For example, when the voltage difference reaches 130mV, the equalizing current can reach about 10A, which is particularly conducive to high-speed equalization.
  
  2. High balance efficiency. High equalization efficiency means less power loss, higher utilization, and lower temperature rise of equipment, as shown in Table 1.
  
  3, real-time dynamic balance. When the battery pack is in a static state, the voltage difference within the pack can be controlled within 10mV or even smaller (depending on the setting of the reference voltage difference), and enter the micro-power standby detection state, whether the battery pack is in the charging state or in the discharging state Status, once the voltage difference is detected to be greater than the reference voltage difference, it will immediately enter the high-speed equalization state. The advantages of real-time dynamic equalization are that the effective equalization time is long, the efficiency of the equalizer is high, and its unique pulse technology has good maintenance and capacity improvement effects on the battery , Has been tested by the application.

   Actual use effect: use on 24 strings of monomer 2V170Ah lead-acid battery packs returned to the factory by customers. Charge and discharge with standard 17A current. Without equalizer, the discharge time after full charge is about 3h. During the discharge of 3 batteries, heat is serious, severe overdischarge, and the voltage value is lower than 0.5V, of which 1 battery is -0.1V , There has been a reversal. The voltage of 21 batteries ranges from 1.8V to 2.0V, and there is still a lot of electricity that has not been released; after using the energy transfer battery balancer prototype in this article, under the standard charge and discharge parameters, the discharge time after a few charge and discharge cycles Gradually extend to about 5.5h, and increase the efficiency by more than 80%. The voltage of the three poor batteries after discharge is all above 1.5V, and the discharge voltage gradually rises, especially the serious problem of heat at the beginning, which has been improved, and the temperature has been reduced. Obviously, the voltage of only 4 batteries is around 1.9V, and the other batteries are around 1.8V, and the battery power is fully and effectively released. 
 

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