Lithium battery test quality?

Source: 2020 - 03 - 26 12:53 hits: how to detect the quality of lithium-ion batteries? Battery plays an important in our life close efficiency, it is used as a power storage, for all kinds of power supply, more lithium-ion batteries, has a wide range of areas, often used in some small portable appliances, such as mobile phone. Battery is because consumer material, usually take charge, no matter how good battery, a certain amount of life, and the price is higher than other batteries, lithium-ion batteries so when buying despite the use of high quality lithium batteries, use for a period of time, so the Lord began to study the lithium battery test quality is good or bad way. Lithium battery quality inspection methods: 1, the fastest detection method is to detect internal resistance and maximum shelf currents, quality lithium battery internal resistance is small, the maximum shelf current is very large. Using the multimeter 20 a range, short delivery directly the two electrodes of lithium-ion batteries, general should be organized in 10 a current, so high, and can maintain for a period of time, relative to quiet the battery is very good. Look at the outside. Full-thickness appearance, such as general 2000 mah lithium-ion batteries, bigger. Singing of exquisite packaging seems to be more fully. 3, see hard. Lithium battery centre excessive clamping, moderate hardness, bending without feeling, with the hand gently knead can explain lithium battery compared with the high quality batteries. 4. The weight apparatus. Cancel the outer packing, can feel the battery weight compared with weight, if the weight of the thick is due to the high quality of the battery. 5, in the process of lithium battery, battery grip power 10 minutes to organize diode if no fever, battery protection board system is complete, usually wear high-quality lithium-ion battery protection board quality is better than general lithium batteries. Test defect in one of the important causes include: 1. Battery time ( Nature 266 mins) Slightly less than 5 hours scale designated by the state, i. e. , the battery current is slightly larger, considering the battery internal resistance factor, can make a slightly smaller test period. 2. Precision constant current source is not enough, below the national begged standard ( Current innovation within 1%) That is the important cause of transistor temperature system innovation. 3. Ammeter accuracy is higher than the national standard ( ≤ 0. 5) 4. A slightly different battery charging method and national standard begged ( National standard begged charging time not more than eight hours) , but in the use of the maximum capacity of the battery. In view of this, this part of the test of the organization of the battery capacity is 1700 mah, much lower than the nominal capacity of 3800 mah. Good quality lithium battery life is about 2 years, about 3 years, lithium batteries are not to use the performance of the power loss is very fast, when charging the battery has been narrowed. In order to protect the lithium ion battery with long time, must pay attention to the prevention of lithium ion battery, such as batteries, a new general in the first three time charge need sufficient enough for 12 hours, in order to activate the battery, usually costs also want to write down, many cities have a blind spot, is the real feet without power of mobile phone charging, this speculation is negligence, in order to protect the lithium battery, although the power balance charge half.