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What are the common faults of lithium batteries
What are the common faults of lithium batteries

Problems in the production process of lithium-ion batteries:

  1. Internal resistance of battery

If the positive and negative plates of the battery are improperly welded or the internal resistance of the rivets in contact with the pressure plate is too large, the internal resistance of the lithium-ion battery will be affected. If the pores of the separator are too small, the internal resistance of the battery will also be affected.

  1. Battery voltage

In the production process of lithium-ion batteries, the positive electrode will be mixed with impurities, and the crystallization of the negative electrode will reduce the voltage of the lithium-ion battery. The incomplete formation of the SEI film during the formation process can also make the voltage of the Li-ion battery too low.

Problems during the use of lithium-ion batteries:

  1. Unable to charge and discharge

Lithium-ion batteries cannot be charged while being charged, and cannot be discharged normally when in use. There may be the following reasons.

The failure of the protection plate protection or the failure of the protection plate and the external short circuit between the lithium-ion battery and the appliance may cause the lithium-ion battery to not charge effectively.

The voltage of the lithium-ion battery is lower than the protection voltage of the protection board or the controller, and the damage of the protection board or the controller will make the lithium-ion battery unable to discharge normally during use. The same result occurs when the line is disconnected.

  1. Abnormal temperature

If the lithium-ion battery has abnormal temperature during charging or discharging, such as excessive temperature, there may be a slight short circuit inside the lithium-ion battery.

  1. Suddenly stop working

When the lithium-ion battery suddenly stops working during use, it is very likely that the lithium-ion battery has been discharged. When the minimum voltage of the protection board or the controller is reached, the self-protection function of the lithium-ion battery is turned on, resulting in a power outage. 

If the excessive working current for a long time exceeds the designed protection current of the protection board or the continuous current of the controller, the protection board or the controller will stop working, causing the lithium-ion battery to suddenly stop working.

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