The lithium battery and detailed comparison of nimh batteries

Source: 2020 - 04 - 04 12:45 hits: first lithium batteries as a battery, the concept is not later than the nickel cadmium battery, but as a result of the active chemical properties of lithium, exist in the process of production, use and transport the potential safety hazard, and lead to its actual application has been delayed. Rely on scientific and technological progress gradually ease the pressure, the lithium battery has become the mainstream of modern battery technology. In practical applications, the lithium battery is developed on the basis of gradually beyond the nimh batteries. To sum up, the overall advantage is convenient and durable. The following is a lithium battery and nickel metal hydride batteries specific comparison: 1. High energy density, nickel metal hydride battery volume between nickel cadmium battery and lithium battery, reflected the transition of nimh battery product features. Due to the different energy density, namely the energy stored in the same volume can be 3 times of nimh batteries. 2. Self-discharge, self-discharge is refers to the battery in the condition of not in use, will lose its power. Nickel metal hydride battery and lithium battery self-discharge rate is not big, but nickel metal hydride battery self-discharge common, self-discharge will shorten the battery life, early termination battery life. About ten years ago, therefore, low self-discharge nickel metal hydride batteries used to be a prominent promote nickel metal hydride batteries, lithium battery self-discharge can be ignored, this is a natural chemical performance differences caused by the two raw materials use. 3. No memory effect, nickel metal hydride battery memory effect obviously. The impression that the people's memory is in the brain, ni-mh battery is the same, charging discharge incomplete or are not satisfied, as time passes can make the battery only remember incomplete and unsatisfactory state, application performance is capacity attenuation. Lithium-ion batteries do not have this function. Nimh batteries, therefore, need every once in a while just to a depth of discharge, to clean up the legacy of memory, this is similar to brainwash people. Lithium battery can charge at any time, so the lithium battery is a 'happy battery, our users are also very happy. 4. High charge and discharge platform. A single lithium battery voltage is 3. 6 v, a single nimh battery voltage is 1. Three times as much as 2 v, the former to the latter. Lithium battery charging method is to set a terminal voltage, usually for 4. 2 v monomer, nickel metal hydride battery voltage fluctuation. Lithium battery charging method called voltage limiting current ( Voltage to the voltage, flow refers to the current, voltage and current setting a limit) Charging, and low nickel metal hydride batteries voltage platform, using the constant current (usually Constant current) Charging. Because different charging ways, so, lithium battery charger and nimh battery charger can't be mixed. 5. Standardize the specificity. Often hear nickel metal hydride batteries on the market the phase-out of name, name and rarely heard the phase-out of lithium-ion batteries. This is because the large capacity lithium battery is mainly used for market of our products. If they are used for small capacity of the market, is not only a technical problem, and the cost allocation problem is very serious. Also in improving technology and market scale, the lithium battery industry, some enterprises have positive attitude to new areas of li-ion battery application, for example, the original is a customized lithium ion battery manufacturer in dongguan threats and electronic co. , LTD. , co. , LTD. , is to start a special research and development and production of the battery, it is adapt to the trend of specific measures, believe in the near future, a similar approach will be one of the ubiquitous phenomenon in the industry. From the above five aspects to compare the different hydride and lithium-ion batteries, you can see the advantages of lithium-ion batteries. However, different types of batteries because of its chemical properties of different products, has its inevitability, so won't be completely replaced by other forms of batteries, such as carbon batteries, alkaline batteries, nickel-metal hydride batteries, etc. For example, in the medical device, emergency equipment and electric tools such as high current instantaneous discharge, nickel metal hydride batteries is better than lithium ion batteries. In the larger applications, nimh batteries can also be used in new energy, hybrid cars, although the study has not yet been a breakthrough.