Understand the advantages and disadvantages of nimh batteries

Source: 2020 - 04 - 04 'hits: mainland China lithium battery manufacturing industry is a rapid development period, especially in high power nimh battery and nickel metal hydride battery capacity has many manufacturers from the corporate customers of different social groups, but nimh battery manufacturers in China's big company rare, very many small private enterprises. Now China is a little famous shenzhen battery capacity, the authors take you today to learn about the advantages and disadvantages of nimh batteries. Nickel metal hydride battery maker atomic mass of nickel metal hydride battery itself is relatively stable, is ruling harmless, health, green environmental protection battery. Nickel metal hydride batteries generate hydroxyl ions and nickel, constant pressure discharge, fast charge, the charging indicator of ontology, support and mixed filling, the support of new and old battery, reverse polarity creep, reserve more than three hundred percent of the nickel cadmium battery, battery capacity compared to the nickel cadmium battery light, long service life, no pollution of the environment at the same time. Defect is at much more expensive than the nickel cadmium battery, less, but the overall performance of lithium battery. Nickel metal hydride battery using constant current charge. According to the acceptance of current batteries, can use different charging current of battery. Don't need to limit the battery charging voltage. The design of the nimh batteries from the nickel cadmium battery, but in the aspect of improving nickel cadmium battery memory effect has a great breakthrough. The key change is using hydrogen storage alloy instead of cadmium in the cathode, so the nickel metal hydride batteries are a common example of material innovation. Operating temperature range: charging: 0 ~ 45 ℃, discharge: - 10 ~ 60 ℃ storage temperature range: storage ( 1 year) - 20 ℃ to + 25 ℃, storage ( 6 months) - 20 ℃ and + 35 ℃, storage ( 3 months) - The advantages of 20 ℃ to + 45 ℃ nimh batteries: 1. High energy density, the nickel cadmium is 1. 5 times; 2. The battery voltage is 1. 2 v - 1. 3 v, similar to nickel cadmium battery voltage; 3. No memory effect, long cycle life. 4. To enlarge the current, resistance to overcharge, discharge ability; 5. No pollution, healthy environmental protection batteries. Nimh batteries defects ( Defects) 1. Price higher than the nickel cadmium battery, the cathode material for rare earth metal alloy material; 2. The higher the rate of self-discharge. 3. Charging time 4. The net weight heavier than lithium battery 5. It is also smaller than lithium. 6. The battery discharge time is too short