The most suitable charging process for lithium ion batteries

To reduce the safety production accidents of lithium batteries, appropriate battery charging methods must be selected. Without mastering the whole process of lithium battery charging, lithium batteries cannot be properly applied. The most suitable whole process of lithium-ion battery charging can be divided into trickle charging, constant current power battery charging, constant current source battery charging and battery charging.

1. Trickle charging: pre charge the fully charged and discharged rechargeable battery. When the battery voltage is less than 3V, select a large DC circuit to charge the lithium battery.

2. Constant current charging: when the battery voltage rises above the trickle charging threshold, the constant current power supply battery is charged according to the lifting current. The charging current of the constant current power supply battery is close to the middle. In the linear charging head design scheme, it always rises with the rise of the battery voltage, so as to minimize the heat emission of the transmission transistor.

3. Constant voltage battery charging: when the battery voltage rises, the constant current power supply battery is charged, and the constant current source battery charging link is just started, in order to better achieve the best characteristics, the tolerance of the regulated tube capacity should exceed +1%.

4. Battery charging stop: unlike nickel rechargeable battery, it is not recommended to charge lithium battery with continuous trickle battery. Continuous trickle charging of lithium metal can lead to the effectiveness of electrode plating process. That will lead to the instability of the rechargeable battery, and may cause sudden full-automatic and rapid disintegration.

In order to deal with the possible safety risks of 3C lithium battery, we can start from the source. First, improve the safety factor of metal electrode and lithium battery electrolyte, avoid direct contact between metal electrode and lithium battery electrolyte, and then improve the reliability of rechargeable battery; Second, improve the safety maintenance design scheme of 3C lithium battery, be sure to install the safety protection board of rechargeable battery, select the heat sealing diaphragm, set the valve of rechargeable battery, and improve the maintenance of power circuit and thermal melting safety tube, so as to improve the safety factor of rechargeable battery; Thirdly, the use of large current spring micro needle beauty control module makes the battery detection more efficient. In addition, it is also beneficial to the reliability of 3C lithium battery detection. The strong current spring sheet micro needle beauty mold can bear 50A strong current, the connection is stable and reliable, has excellent adaptability to small and medium-sized particles, the average service life reaches more than 20W times, and has high compatibility for 3C lithium battery detection.