1. This constant current and constant voltage mode has high charging efficiency and less damage to the battery.
2. The virtual voltage at the charging end is high due to the internal bias resistance of the battery. Using constant voltage mode to reduce the charging current can make the battery fully charged.
Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
Detailed information:
1. Advantages of lithium batteries:
1. It has a high storage energy density, reaching 460-600 Wh/kg, about 6-7 times that of lead-acid batteries.
2. Long service life, service life can reach more than 6 years. The battery with lithium iron phosphate as p electrodeositive has 1C (100% DOD) charge and discharge record, which can be used 10,000 times.
3. The rated voltage is high (the operating voltage of a single unit is 3.7V or 3.2V), which is approximately equal to the series voltage of three nickel-cadmium or nickel-cadmium rechargeable batteries. metal hydride. , which facilitates the formation of a battery power supply; Lithium batteries can be a new type of lithium battery voltage regulator technology that adjusts the voltage to 3.0V to adapt to the use of small electrical appliances.
2. Disadvantages of lithium batteries:
1. Primary lithium batteries have poor safety and explosion risk.
2. Lithium-ion batteries based on lithium cobalt oxide cannot be discharged at high currents, are expensive and unsafe.
3. Lithium-ion batteries require circuitsProtective uits to prevent the battery from being overcharged or discharged.
Baidu Encyclopedia - Lithium Batteries
Polymers are also lithium batteries
Mobile power supplies generally use lithium-ion polymer cells and 18650 lithium batteries. When making batteries, comparing the two, lithium ion polymer batteries are safer than 18650 batteries, because the polymer is packaged in aluminum plastic, which will not explode and take not fire, but will only swell.