Analysis of the correct discharge method of the battery

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

1. Unbalanced battery discharge current. Each group of batteries will discharge the load current of the system naturally, the battery pack, the internal resistance is large, the current is small, and the health battery pack, the internal resistance is low, the power is large, resulting in certain backward batteries due to the discharge current is not enough The phenomenon of big and unable to expose, we will not reach our power-on performance quality test purposes; 2.

If the two batteries have an outgoing or incarnation, the quality problem is lagging, when it is discharged to the rectifier output protection value, it is not easy to be discovered in time. At this time, there is still no reserve battery capacity, there is high risk. In this case, this discharge mode is lower than the offline discharge mode; Adjust the rectifier output voltage to protect the low voltage value (such as 46V), making all the backup battery packs direct discharge to the actual load to the rectifier output voltage protection setting value.

Since most battery configuration of the current network system equipment is 1 ~ 4h, the discharge current is large, should consider the battery pack to the device power supply circuit pressure drop and equipment low voltage work threshold, and ensure the safety of the system, online evaluation discharge. The rectifier output voltage is not allowed to be too low (such as 46V), the discharge depth is limited, the discharge time of the actual load is more difficult, and the battery capacity is difficult to accurately, and there is an uncertain factor for battery performance, thus the active battery pack activity. Display purposes are difficult to achieve maintenance expected work effects.

4. Due to the limited discharge depth, the purpose of the discharge detection of the active battery pack cannot be achieved, and more critical is that in the practice of full capacity discharge we often find that some battery packs are normal in the pre-discharge pre-expansion, but to the middle and late Some backward batteries have begun to expose gradually. This part of the backward monomer is not discovered in the depth of this discharge.

So we call this discharge mode for online evaluation, it can only evaluate battery pack performance, or test this battery pack to discharge the length of time of protection voltage, and cannot further examine how long it can be discharged in the end;.

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