How does the charger determine that the lithium battery is overflowing?

How does the charger determine that the lithium battery is overflowing? First of all, it is necessary to ensure that the charger matches the electrical appliance to be charged, voltage matching and current matching, voltage matching is very important, and the current index of the charger determines the charging time, the higher the current index, the faster the charging speed; secondly, the more conventional judgments It is the color change of the indicator light of the charger or the light on the electrical appliance, generally from red to green, which means that the statement is overflowing. Measure the voltage of an electrical appliance. The terminal voltage of the battery is different depending on the power of the battery. The less the power, the lower the voltage. Therefore, the voltage of the battery has a range from the lower limit that allows the electrical appliance to work normally to overflowing electricity. Lithium batteries can be judged directly based on the battery voltage. When the voltage exceeds the set cut-off voltage, the battery is considered to be overflowing; advanced chargers use voltage and current combined judgment. Switch to constant voltage charging when the voltage is close to the cut-off voltage. When the current is less than a certain set value, it is considered that the battery has overflowed. Generally, the charger judged by the lowest-level voltage comparison method can judge a fully charged battery in a short time. This is because the voltage comparison charger only judges the battery voltage. As long as the battery voltage is reached, it is judged to be overflowing, and there is usually a lot of room for the battery to reach saturation, that is, basically there is no real overflow. Therefore, this judgment method is generally only used on the lowest-level chargers. The charger should be unplugged when the charger gives an overflow instruction. Current chargers generally have a self-stop design. It’s okay if you don’t remove the lithium battery from the charger for a short time, but leave the battery on the charger for a long time. When the grid voltage rises late at night, the charging has stopped. After the voltage rises, it will continue to charge and cause the lithium battery to overcharge, which will affect the life of the lithium battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.