Application Notes
The above-mentioned two kinds of lithium batteries is a disposable Laptop Battery battery, non-rechargeable (charge time is dangerous!); The battery is not short-circuit between anode and cathode; not be too large current discharge (more than the maximum discharge current discharge); battery until it ceases to discharge when the voltage should be electronic products removed in a timely manner; run out of battery is not squeezing, burning and demolition; can not exceed the prescribed temperature range of use.
As the lithium battery voltage is higher than ordinary batteries or nickel-cadmium batteries, make no mistake when used to avoid damage to the circuit. Through the familiar model of the CR, ER can know the type and rated voltage. In the purchase of new batteries, be sure to buy according to the original model, otherwise it will affect the performance of electronic products.
Rechargeable lithium batteries
Rechargeable lithium batteries There are many, such as lithium - vanadium oxide batteries, lithium-ion battery and abroad, a newly developed lithium - polymer batteries. Here describes only the first two, focusing on lithium-ion battery.
Rechargeable lithium-ion battery is currently the most widely used mobile phone battery, but it is more "finicky" in use can not overcharge, over-discharge pavilion dv6000(hp dv6000 battery) (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.
1. Lithium - vanadium oxide batteries (Li-V6O13)
Lithium - lithium vanadium oxide 342661-001 batteries for the anode, vanadium oxide as cathode, inorganic salt electrolyte composed of organic solvent. It features can be charged. With 2 batteries, for example, the lithium - vanadium oxide battery and lithium - lithium manganese dioxide batteries, and - compared with thionyl chloride batteries as shown in table 5.
From Table 5 we can see, due to lithium - vanadium oxide batteries rated voltage of only 2.8V, and the rated capacity is also small, so when compared with other two kinds of lithium batteries, its specific energy is minimal. The main parameters of such cylindrical batteries as shown in Table 6. As can be seen from Table 6, the number of charge cycles (cycle life) is not long, so this rechargeable battery soon replaced by a lithium-ion batteries.
2. Lithium-ion battery (Li-Ion)
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 345027-001 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. 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 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% (for example, 4.2V rechargeable PP2182L 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.
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