What kinds of detection items of mobile phone lithium battery protection board

1. Overcharge protection detection. If the charging time of the mobile phone lithium battery is too long, the greater the possibility of explosion. The purpose of overcharge protection detection is to check that the protection board takes protective measures to cut off the charging line in time when the battery is charged for a long time. 2. Over-discharge protection detection. If the discharge voltage of the battery is less than 2.5v, it is equal to over-discharge. Over-discharge will shorten the service life of the battery and cause the battery to fail in severe cases. The detection is to test the protection board to cut off the discharge circuit because the battery of the mobile phone is not charged in time and the voltage is too low during use. 3. Discharge over-current protection detection, mobile phone lithium battery cannot be used for high-current discharge, higher internal temperature will be generated during over-current discharge and energy will be lost, reducing the discharge time, if there is no protection element in the battery, it will be overheated and damaged Battery, over-current protection detection is to guard against excessive discharge current and take protective measures. 4. Short circuit protection detection, mobile phone lithium battery is prone to short circuit during the charging process. Short circuit is the extreme case of over current. Timely guard against short circuit occurrence is an important function of the protection board. In addition to the above four basic detections, there are delay detection, internal resistance detection, recovery detection, equilibrium detection, self-consumption current detection, etc. during the processing of the mobile phone lithium battery protection board. The performance detection result of the protection board has a great influence on the product quality of the mobile phone lithium battery, so the battery manufacturer will have a very strict standard during the detection process, including the selection of detection equipment. The detection of mobile phone lithium battery protection board has high current requirements. The general probe module cannot meet the rated current required by the mobile phone lithium battery protection board. For this reason, a high-current shrapnel micro-needle module must be used. The first is that the current that can pass can reach up to 50A, and the overcurrent capability is strong; the second is that there will be no current attenuation during the current transmission process, and it has a good connection function; the third is that it has a service life of more than 20w times, and the detection High efficiency and good current conduction capability. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Lithium battery charging and discharging principle lithium and maintenance analysis