It is a specific comparison between lithium batteries and nickel-metal hydride batteries

As a kind of battery, the concept of lithium battery is not later than that of nickel-cadmium battery. However, due to the active chemical properties of lithium element, there are potential safety hazards in the process of processing, use and transportation, causing its actual application to be delayed. Relying on scientific and technological progress to gradually alleviate the above pressure, lithium batteries have become the mainstream of modern battery technology. In practical applications, lithium batteries are developed on the basis of gradually surpassing nickel-hydrogen batteries. In summary, the overall advantage is convenience and durability. The following is a specific comparison between lithium batteries and nickel-metal hydride batteries: 1. High energy density: The volume of nickel-metal hydride batteries is between nickel-cadmium batteries and lithium batteries, reflecting the characteristics of transitional products of nickel-hydrogen batteries. Due to the different energy density, the energy stored in the same volume can be 3 times that of a nickel-hydrogen battery. 2. Self-discharge: Self-discharge means that the battery loses its power when not in use. The self-discharge of nickel metal hydride batteries and lithium batteries is not large, but self-discharge of nickel metal hydride batteries is common, and self-discharge will shorten the battery life and terminate the battery life early. Therefore, about ten years ago, self-discharge low nickel metal hydride batteries used to be a prominent promotion of nickel metal hydride batteries. When the self-discharge of lithium batteries can be ignored, this is due to the difference in natural chemical properties caused by the use of raw materials. Two. 3. No memory effect: Ni-MH battery has obvious memory effect. People's memory is the impression left in the brain. Ni-MH batteries are the same. Incomplete discharge or unsatisfactory charging will cause the battery to remember only incomplete and unsatisfactory states over time, and the application performance is capacity decay. Lithium batteries do not have this function. Therefore, nickel-metal hydride batteries must be deeply discharged at regular intervals to clean up the memory left behind, which is similar to brainwashing. The lithium battery can be charged at any time, so the lithium battery is a happy battery, and our users are also very happy. 4. High charge and discharge platform. The voltage of a single lithium battery is 3.6v, and the voltage of a single nickel-hydrogen battery is 1.2v. The former is 3 times that of the latter. The charging method of the lithium battery is to set a terminal voltage, usually 4.2v monomer, and the nickel-hydrogen battery has no voltage rise and fall. The charging method of lithium batteries is called voltage limited current (voltage refers to voltage, flow refers to current, that is, voltage and current set a limit) charging, while the voltage platform of nickel-metal hydride batteries is low, and constant current (constant current) charging is usually used. Because the charging methods are different, the lithium battery charger and the nickel-hydrogen battery charger cannot be mixed. 5. Standardize specificity. The out-of-phase names of nickel metal hydride batteries are often heard on the market, and the out-of-phase names of lithium batteries are rarely heard. This is because lithium batteries are currently mainly used in products with large market capacity. If they are used in the small-capacity market, not only is a technical problem, but the cost sharing problem is also very serious. Still improving technology and market scale issues, in the lithium battery industry, some companies have been actively engaged in new areas of lithium battery applications. For example, Dongguan Threat and Electronics Co., Ltd., a customized lithium battery manufacturer, is starting a special The research and development and processing of batteries is a specific measure to adapt to this trend. It is believed that similar practices will become one of the common phenomena in the industry in the near future. Comparing the difference between nickel-metal hydride batteries and lithium batteries from the above five aspects, we can see the advantages of lithium batteries. However, different forms of battery products have their own inevitability due to their different chemical properties, so they will not be completely replaced by other forms of batteries, such as carbon batteries, alkaline batteries, and nickel-hydrogen batteries. For example, in the instantaneous discharge of large currents of medical equipment, emergency equipment and power tools, nickel metal hydride batteries are better than lithium batteries. In terms of larger applications, nickel-metal hydride batteries can also be used in new energy hybrid vehicles, although this research has not yet made a breakthrough. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Advantages and application industries of ternary polymer lithium batteries