lithium-ion battery - Type

lithium-ion battery - Type

Non-rechargeable lithium batteries Laptop Battery have a variety of currently used are lithium - manganese dioxide batteries, lithium - thionyl chloride batteries and lithium batteries and other compounds.

1  Lithium - Manganese Dioxide Battery (Li  MnO2)

Lithium - Manganese Dioxide Lithium battery is a kind of anode to manganese dioxide as cathode, and a one-time use of organic electrolyte batteries. The main characteristics of the battery cell voltage is high, rated voltage of 3V (an ordinary alkaline batteries 2 times); the termination of the discharge voltage of 2V; than the energy of large (see above examples); discharge voltage is stable and reliable; a good storage properties (storage time 3 years), self-discharge rate is low (annual self-discharge rate ≤ 2%); Operating temperature range -20 ℃ ~ +60 ℃.

The battery can be made into a different shape to meet different requirements, it has a rectangular, cylindrical and button-shaped (button).

Rechargeable lithium-ion battery

Rechargeable lithium-ion battery is currently the most widely used mobile phone M8403 battery, but it is more "finicky" in use can not overcharge, over-discharge (may damage the battery or make it scrapped). Therefore, the protection of components or the battery protection circuitry to prevent damage to expensive batteries. Lithium-ion battery charging very high, to ensure that the termination voltage is within 1% accuracy, at present the major semiconductor factory has developed a variety of lithium-ion battery charging IC, in order to ensure safe, reliable and fast charging.

Now phone is a very common part of the phone nickel-metal hydride batteries, but the smart phone type is a lithium-ion battery. The proper use of lithium-ion battery for extended battery life is very important. Lithium-ion battery is currently the most widely used lithium batteries, which according to different requirements of electronic products can be molded into a flat rectangular, cylindrical, rectangular, and button, and there are several cells in series with the composition of the battery pack. Lithium-ion battery rated at 3.6V (some products are 3.7V). When fully charged the termination charge voltage and M9324 battery anode materials relate to: the anode material is graphite 4.2V; anode material for coke 4.1V. Resistance of different anode materials are also different, slightly larger internal resistance of coke anode and the discharge curve is also slightly different, as shown in Figure 1. Commonly referred to as 4.1V and 4.2V Li-ion battery Lithium-ion batteries. Now used mostly 4.2V, and the termination of lithium-ion battery discharge voltage 2.5V ~ 2.75V (battery factory operating voltage range is given, or given the termination of the discharge voltage, the parameters slightly different). Less than the termination of discharge voltage to continue to discharge known as the over-discharge, over-discharge of the battery will be damaged.

Lithium-ion batteries are not suitable for high-current discharge, over-current discharge will reduce the discharge time (internal temperature will produce a higher loss of energy). Therefore, the battery manufacturing plant gives maximum discharge current, in use A1185 should be less than the maximum discharge current. Lithium-ion batteries have certain requirements on the temperature of the factory give the charging temperature range, discharge temperature range and the preservation temperature range. Lithium-ion battery on the charge requirement is very high, it requires sophisticated charging circuit in order to ensure the safety of charge. Termination tolerance for the rated charge voltage accuracy of ± 1% (example: 4.2V rechargeable lithium-ion batteries, its tolerance of ± 0.042V), over-voltage rechargeable lithium-ion battery can cause permanent damage. Lithium-ion battery charge current should be based on the battery manufacturer's recommendations and demand for a limited flow of the circuit in order to avoid over-current (overheating). Commonly charge rate 0.25C ~ 1C (C is the battery capacity, such as the C = 800mAh, 1C charge rate of the charge current is 800mA). In the high current charge, often to detect the battery temperature to prevent overheating damage to the battery or produce an explosion.

Rechargeable lithium-ion battery is divided into two phases: the first constant current charging, to near the termination voltage is changed to constant voltage charging, the A1175 charging characteristics as shown in Figure 2. This is a 800mAh capacity battery, its termination charge voltage of 4.2V. Batteries 800mA (charge rate of 1C) constant current charging, the battery voltage to the beginning of the slope of a larger step-up, when the battery voltage is close to 4.2V, the change 4.2V constant voltage charging, the current gradually decreased, the voltage changed little to the charge current dropped to 1/10C (about 80mA), the view that close to full, you can terminate the charge (some 1/10C charger to start the timer, over a certain time after the end of the charge). Lithium-ion battery charging or discharging process in the event of overcharge, over-discharge or over-current, it will cause damage or reduce the life of the battery.

[Edit this paragraph] Charge

The first charge, if time can be longer, then the electrode as much as possible to the highest oxidation state, and so be able to increase Armada E500 battery life.