Reasons and solutions for li ion battery charging
Reasons and solutions for li ion battery charging
Ni MH batteries and Li ion batteries are two main rechargeable batteries in the market. The problem that people pay close attention to is that the batteries are not charged for electricity.The reasons for the battery's inefficiency can be divided into the internal causes of the battery itself and the external reasons for the nimh or li ion battery charger.Lithium ion battery is gradually occupying the original market of Ni MH battery because of its superior performance. Therefore, the li ion battery charging is the main point, and there is a different place to mention nimh battery.
The internal cause of the li ion battery is not charged
Ⅰ. The battery is zero voltage or there is a zero voltage battery in the combined battery. The battery itself is zero voltage or unqualified products, the factory will not achieve the nominal capacity and the corresponding voltage value, or to come to an end, because of the long-term use, run out of capacity, voltage drop to zero.
Considering that li ion battery has been kept for a long time, such as more than one year, it may also discharge the power in the form of self discharge, so that the voltage is zero. Now the protection plan of lithium battery requires battery to charge into zero voltage when it is designed. Therefore, there are two kinds of differences in battery zero voltage: one is to charge and continue to use, the other is completely useless, in other words, the former capacity loss is reversible, while the latter is irreversible. If the zero voltage battery is not charged into the battery, if it is unfortunately designed in the li ion battery pack, it will transmit the zero voltage signal to the battery pack through the protection chip, thus turn off the MOSFET and make the battery pack unable to charge.
Ⅱ. Battery pack connection error. This situation is less likely to occur, because the rechargeable battery or battery pack is usually required for full inspection when the factory is out. The battery of the regular manufacturer is present. Unless a battery is not fully inspected when it is released, the wrong battery pack is not detected. Of course, is another matter for non regular factory produced or individual assembly, a connection error and can not completely eliminate. In contrast, the nimh battery pack has a lower total detection rate, and the probability of this error may be a little bigger.
Ⅲ.The internal electronic components and protection circuits are abnormal. This situation mostly occured after the batteries used for a long time, the aging and shedding of the electronic components will lead to the abnormal charging, especially to the protection of electronic components integrated circuits such a situation will directly affect the protection circuit of the play, and thus can not properly guide the charging process.
The external reasons for charging
Ⅰ. The li ion or nimh battery charger is not matched with the battery, especially the difference between the charger and the design of the charging current of the lithium battery will lead to too much transient current when charging, and the lithium battery will overcharge by overcurrent protection.To solve this kind of not supporting especially not keep the nimh battery charger and li ion battery charger mixed using, some universal charger also try not to use the "universal".
Ⅱ. Failure of charging equipment, without output voltage. In this case, you just need to change another charger in the same model.
Ⅲ. Improper charging environment, li ion battery charger and rechargeable li ion battery all have their own working environment. Beyond any restriction condition, they will not be charged at high temperature or low temperature.
It is no more than diagnosis and treatment to solve the problem of battery charging. Mostly we first think about the external causes, because we only change to the correct way, it can be sovled. While the internal cause requires professional battery knowledge and battery testing equipment to get the correct conclusion,if you cannot solve by your self, you can get professional repair outlets for maintenance.