Battery and power adapter
The power supply of a notebook computer includes a battery and a power adapter. The battery is the power source for the outdoor office of the notebook computer. The power adapter is a necessary device for charging the battery, and it is also the preferred power source for indoor office.
The nature of laptop batteries is not much different from ordinary chargers, but manufacturers usually design and pack the batteries according to the characteristics of the laptop model, and pack multiple rechargeable battery packs in a designed battery case. in. At present, mainstream notebook computers generally use lithium-ion batteries as a standard configuration. As shown in the figure to the right, in addition to lithium-ion batteries, there are several types of batteries used in notebook computers such as nickel-chromium batteries, nickel-metal hydride batteries, and fuel cells.
2 Power adapter
When using a notebook computer in an office or a place with a power source, a laptop computer's power adapter is generally used for power supply, as shown in the figure on the right. The power adapter can automatically detect 100 ~ 240V AC (50 / 60Hz), and provide stable low-voltage DC power (usually between 12 ~ 19V) for the laptop.
Notebook computers generally have the power adapter externally connected to the host with a cable, which can reduce the size and weight of the host. Only a few models have the power adapter built into the host.
Notebook power adapters are fully sealed and miniaturized, but their power can generally reach 35 ~ 90W, so the internal temperature is high, especially in the hot summer, when you touch the power adapter while charging, you will feel hot.
When the laptop is turned on for the first time, the battery power is usually not full, so users need to connect the power adapter. If the laptop is not used for a long time, it is recommended that the user remove the battery and store the battery separately. Another use of the battery, it is recommended that the battery at least once a month to research, discharge naked. Otherwise, the battery may malfunction due to excessive discharge.
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|Release time: 2019.09.18 Source: Power adapter manufacturers|
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