What is the composition of a cell phone lithium battery and the functions of each part?

Introduction What is the composition of cell phone lithium batteries and the functions of each part? Mobile phone lithium batteries are mainly composed of upper and lower plastic shells, lithium batteries, protective circuit boards and resettable fuses.

What is the composition of a cell phone lithium battery and the functions of each part?

Important lithium batteries are mainly composed of upper and lower plastic shells, lithium batteries, protective circuit boards and resettable fuses. Some manufacturers are also equipped with NTC identification resistors, vibration motors or charging circuits and other components.

The functions of each part are as follows:

Lithium battery cell: provides rechargeable and dischargeable power.

Protect the circuit board: Avoid overcharging, overdischarging and short circuiting the battery.

Recoverable fuse: The positive thermistor plays a high temperature protection role and is a double protection to protect the circuit board from failure.

Identify Resistance: Identify the original battery, non-original batteries cannot be used.

What is a batterylithium

(1) Lithium battery cell: provides rechargeable and dischargeable power.

(2) Protective Printed Circuit Board (PCB): Prevents the battery from overcharging, overdischarging and short circuiting.

(3) Resettable fuse (PTC): the positive thermistor plays a protection role against high temperatures and also provides double protection in the event of a failure of the printed circuit.

(4) Resettable Fuse (NTC): Negative thermistor, which senses the internal temperature of the battery to provide low temperature protection.

(5) Identification Resistor: Identify the original battery. Non-original batteries cannot be used.

(6) Automatically reserve backup power

Lithium battery is the abbreviation of lithium-ion battery

Battery composed of a lithium-oxygen compound as the positive electrode, a material ofnegative electrode (graphite, etc.) and an organic solvent dissolved in lithium salt (LiPF6, etc.) as electrolyte.

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.

Lithium battery is short for lithium-ion battery. As a new type of energy storage battery, it gradually replaces the traditional lead-acid battery.

The most common batteries in daily life are cell phone batteries, electric vehicles and trams, and power tool batteries.

1. From appearance: cylindrical, square.

2. Of the shell material: steel shell, aluminum shell, plastic shell, aluminum plastic film (soft packaging).

3. According to energy density: capacity typeity and type of power.

4. Separated from the electrolyte: liquid lithium-ion battery, solid (polymer) lithium-ion battery.

5. From the perspective of positive electrode materials: lithium cobalt oxide (C), lithium manganate (M), ternary lithium (N), and lithium iron phosphate (F).

The 18650 cylindrical battery is commonly used, which is a cylindrical battery with a diameter of 18 mm and a height of 65 mm.

Notes:

First, lithium-ion batteries can be seen everywhere in people's lives, in various portable electronic products, vehicle GPS, etc. Lithium-ion batteries have become the key to keeping these tools running. Keeping lithium-ion batteries properly charged and discharged can extend battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that giving away cell phonesbles,When charging the battery of digital products such as laptops, it is not necessary for it to reach the maximum value.

If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is best to keep these products turned off because if the operating temperature exceeds 60 degrees Celsius, the lithium battery -ion ​​will accelerate aging. Lithium battery charging temperature range: 0 ~ 45 degrees Celsius, lithium battery discharge temperature range 0 ~ 60 degrees Celsius.

Second, if the cell phone battery needs to be charged every day, the reason may be that the battery is defective or it is time to "retire".

For laptop owners, it is best to remove the battery if it is plugged in for a long time (the high heat generated by the computer duringits use is not good for the laptop battery).

Third, under normal circumstances, 50% power is most conducive to the preservation of lithium-ion batteries.

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