What is the laptop battery? Laptop battery type

As we all know, laptops can be used anytime, anywhere, providing great convenience for people's lives, and laptop batteries are the basis to support this feature, then what is the laptop battery? What are the types of laptop batteries? The following decoration home decoration network Xiaobian will answer for you one by one, hoping to help everyone.

What is the laptop battery?

The laptop battery is the battery inside the notebook. Now using the rechargeable battery is one of the advantages of the laptop compared to the desktop. It can greatly facilitate the use of the notebook in various environments. Introduced the first battery is a nickel-cadmium battery (NiCd), but this battery has a "memory effect", must be discharged before each charging, very easy to use, soon to be nickel-metal hydride (NiMH) batteries are replaced, NiMH not only “Memory effect” and up to 10% more power per unit weight .

What are the types of laptop batteries?

1, nickel-cadmium batteries (Ni-Cd): it is a battery laptop used in the veteran, but because it has a serious memory effect and an anode material such as nickel (Ni) used toxic and for the environment pollution, So it was quickly dismissed by the notebook, replaced by a better nickel-metal hydride battery.

2 , Ni-MH battery ( Ni-MH ): It is basically the same as the nickel-cadmium battery structure, but the cathode is replaced by a non-toxic nickel-metal hydride material with better performance and environmental protection. Although it is only a small change, it has brought about a great improvement in performance. It also has the advantage that the nickel-cadmium battery can't be avoided. The memory effect is not obvious, so that we don't have to worry about the nasty memory effect and it is more convenient to use. Although the performance of nickel-metal hydride batteries is very good, but with the advancement of technology, it has been replaced by lithium batteries with lighter weight and higher energy density, which has become the yellow flower in the history of notebook batteries.

3 , lithium battery: Many people think that lithium battery refers to the lithium polymer battery we use nowadays, in fact, lithium battery includes lithium metal ion battery ( Li - MO2 ) and lithium polymer battery ( Li - ion ). Because the Li - Mo2 battery died of a fire explosion when it entered the market in 1989 , it quickly disappeared from people's sights and replaced with a safer lithium polymer battery. It is light in weight and weighs only about 1/2 of NiMH batteries in the same capacity , so it quickly became the new darling of mobile portable devices. It is used by most laptops and is now the backbone of laptop batteries.

4, the fuel cell (Fuel Cell): Fuel cells are star future laptop battery, which there are many types, including proton exchange membrane fuel cell (the PEM), alkaline fuel cell (AFC), and solid oxide fuel cells (SOFC), etc. A variety of fuel cells, which are actually suitable for notebook computers due to the start-up time and operating temperature of the fuel cell, are only proton exchange membrane fuel cells ( PEM ). The fuel used in PEM fuel cells is methanol, etc. The principle of generating electricity by the positive and negative electrodes is that after hydrogen reforming of methanol, it is input to the negative electrode, and oxygen is input to the positive electrode. Through the action of the catalyst, the hydrogen atoms are converted into protons and electrons. Different paths enter the positive electrode, and electrons generate electricity through internal circulation. Protons reach the positive electrode through the electrolyte, and combine with oxygen and electrons to generate water and heat. Experts agree that the biggest factor limiting the commercial application of fuel cells is that fuel cells use metal platinum ( Pt ) or platinum as a catalyst to keep production costs high. Currently, the production cost of fuel cells is between 500 and 1000 US dollars / kW. Studies have shown that consumers can only be truly accepted when the production cost of fuel cells drops to around $ 50 / kW. The main reason for the high cost of fuel cells is that mass production has not yet been formed. Once entering the mass production stage, the price of fuel cells will definitely be greatly reduced.

Laptop battery mode introduction:

1, balance modes: default setting balanced mode, the graphics power plan is "balanced." After the power is turned on, the processor heat dissipation mode is “active”, the minimum processor state is “ 5% ”, and the maximum processor state is “ 100% ”. The screen brightness when using the battery is 40% , and it is 100% after the power is turned on . That is to say, in balanced mode, full performance is provided only when the computer is active, and when it is inactive for a period of time, it automatically enters the power saving state. For most people, this is the most reasonable power plan.

2 , power saving mode: The default setting of the energy saving mode, the power supply plan of the graphics card is "maximum battery life". The processor cooling method is “passive”, the minimum processor state is “ 0% ”, and the maximum processor state is “ 100% ”. The screen brightness when using the battery is 40% , and it is 100% when the power is turned on . The power-saving mode is more suitable for mobile office use, and all hardware works at the lowest power consumption mode. This mode is the mode with the lowest power consumption, so the heat dissipation is low.

3 , high performance mode: In the default settings of high performance mode, the power plan of the graphics card is "highest performance." The processor cooling method is “active”, the minimum processor state is “ 100% ”, and the maximum processor state is “ 100% ”. In high-performance mode, all hardware is in optimal working condition, so it consumes more power and the heat dissipation naturally increases.

The above is what Xiaobian brings to you. What is the laptop battery? The full range of notebook battery types, I believe that everyone after reading this article has a basic understanding of what is the laptop battery, if you want to know more about decorative advice, please click to enter the decorative knowledge channel .

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