What are the reasons why lithium battery solar street lamps cannot be connected in parallel? Next, I'll bring you to know each other in detail.

In fact, the lithium battery solar street lamp group is composed of many lithium battery cells and protective plates. Before the formation, the battery cells must be paired by capacity. The basic parameters such as volume, internal resistance and working voltage must be checked to ensure the unity of the battery cells is good. In this way, the battery group can fully mobilize profits to maximize, and the number of circulating systems can also be increased by many. If two groups of rechargeable batteries are used in parallel, there is a big difference between the battery cells and the protection boards. The greater the difference, the greater the high efficiency loss of rechargeable batteries!

1. The lithium battery solar street lamp battery pack is used in parallel, its working voltage is the same, its internal resistance is different, and the current provided by the two groups is also different. Similarly, the internal resistance is the same as the working voltage, and the current provided is also inconsistent. If they are different, the difference in the current provided is greater.

2. In the case of overcurrent, if the overcurrent protection points of the boards are the same, but the currents provided are different, there will be a group of protection boards, and the other group can charge and discharge normally. However, after the overcurrent ends in a flash, all the currents will be provided by the group that has not been maintained. In this case, the long-term performance will lead to a faster decay coefficient of this group of rechargeable batteries. Maybe there are other standards that can lead to this kind of situation.

3. In case of power loss, if one group reaches the maintenance point first, or all the current is added to the other, the attenuation coefficient of rechargeable batteries will be accelerated in the long run, leading to worse uniformity.

4. If the batteries are charged simultaneously, the current shall not exceed the current of a single string of protection boards. The battery with the same port can be charged and discharged immediately. The parallel charging and discharging port must be disconnected when charging the battery with the split port, or the over charging and maintenance will be invalid.

5. In parallel connection, the control circuit has already been generated in the middle of the battery pack. If the pressure difference is relatively large, it will lead to the internal loop current, which will damage the protection plate.