Lithium battery charge and discharge requirements and charging method

Source: 2020 - 03 - 28 all clicks: lithium battery charge and discharge requirements: lithium battery: according to the structure characteristics of lithium, the biggest stop charging voltage should be 4. 2 v, cannot excessive charging, or because the positive lithium ion will take away too much, and cause the waste of the battery. The charging and discharging begged is higher, can be used for constant current, constant voltage charger stops charging. Constant current charging is in commonly 4. After 2 v/node into a constant voltage charging. When constant voltage charging current dropped to 100 ma, should stop charging. Charging current ( mA) = 0. 1 ~ 1. Five times the battery capacity ( Such as the 1350 mah battery, charging current can be controlled between 135 ~ 2025 ma) 。 Conventional charging current can choose about 0. Five times the battery capacity, charging time is about 2 - 3 hours. Lithium battery discharge: due to the internal structure of lithium batteries, lithium ion of discharge can't move to the anode, must keep part of the lithium ions in the cathode, in order to ensure the future of lithium-ion rechargeable dredge channel. Otherwise, the battery life will be shortened accordingly. In order to ensure some lithium ion of the graphite layer after discharge, it is necessary to strictly limit the discharge stop the minimum voltage, the lithium battery can't discharge. Stop discharge voltage is commonly 3. 0 v/node, a minimum not less than 2. 5 v/node. The length of the battery discharge time related to lithium battery capacity and discharge current. The battery discharge time ( Hours) = battery capacity/discharge current. Lithium battery discharge current ( mA) Should not be more than three times as many battery capacity. ( Such as the 1000 mah battery, strictly control the discharge current within 3 a) Otherwise it will damage the battery. Lithium battery discharge? Lithium battery discharge process balance at work. Theoretically, lithium-ion battery discharge when the discharge rate and depth of discharge should be paid attention to. The depth of discharge is the ratio of the discharge capacity and nominal capacity. General specification is: 2. Between 75 V and 3 V lithium battery discharge can be used to recharge the battery, may be because of less than 2. 75 V rechargeable batteries taboos' put ', also from the internal structure, the electrolyte composition excessive volatility, 2 it is lithium battery cathode overreaction to make its dielectric film change form embedded, constitute a permanent loss of power. Lithium battery is not suitable for discharge, discharge of the lithium battery is very bad. Lithium battery is very fragile, to poor adaptability than nickel battery charge and discharge change, also can bring extra risk. Accurate discharge method is used to discharge lithium battery, can make its service life is longer.