The large capacity lithium battery life characteristics analysis

Source: 2020 - 04 - 19 confusion hits: 1. Large capacity lithium battery analytical skills summarized as follows: 1, the large capacity lithium battery analysis found that rechargeable batteries is how to realize the energy conversion, electrochemical conversion of each large capacity lithium battery capacity, storage of chemical energy into electrical energy directly, in secondary electron ( Also known as a battery) Another term for ( Also known as portable battery) In the process of charging and discharging, that convert chemical energy into electricity. In the process of charging, the electric energy is converted back into chemical energy. The 12 v lithium-ion battery pack 2. According to the different electrochemical system, the large capacity lithium battery analysis process can generally charge and discharge more than 500 times, and lithium ion battery, namely jiangsu wei xuan lithium energy company production of 18650 large capacity lithium battery, can charge and discharge more than 1000 times. Lithium ion battery is a new kind of rechargeable portable batteries. The rated voltage of 3. 6 v, the discharge voltage will gradually decreases with the increase of the depth of discharge, unlike other rechargeable batteries, in the process of discharge, the voltage will suddenly fall. Ii. The characteristics of large capacity lithium battery life analysis: 1. Found in the analysis of the large capacity lithium battery, rechargeable battery life is long, large capacity lithium battery recycling more than 1000 times. Although it is more expensive than dry cell, if often use, it is relatively expensive. Rechargeable large-capacity lithium battery capacity than the same specifications of alkaline manganese and zinc carbon battery capacity is small. If compared with 32650, lithium iron phosphate batteries, you found that 26650 high capacity lithium iron phosphate lithium battery price so low, the existence of many original B products, therefore, high capacity battery reduce the price of lithium batteries must be a reason, and the analysis of the high capacity lithium battery too much trouble, you just look at it. The ternary lithium battery 2. Another disadvantage is that because they almost constant discharge voltage, it is difficult to predict when the discharge end. At the end of the discharge, battery voltage drop suddenly. If you are using the camera, suddenly a dead battery, you must stop. But on the other hand, the rechargeable battery can provide more than the most primary battery capacity. Iii. Large capacity lithium battery internal structure analysis methods: 1. Analysis of large capacity lithium battery from the battery components, special solution, dope composition such as analysis of its internal structure, respectively with the positive and negative active material to mix, powder by high speed uniform mixing slurry is made after the positive and negative material. 2, large capacity lithium battery, analyze its battery technology component, such as desert, the slurry evenly coated on the surface of metal foil, after drying, into a positive electrode and negative electrode pills respectively. 3, the large capacity lithium battery assembly principle analysis, in order to the anode, the diaphragm, the cathode, the diaphragm on the put down, by the winding into the battery core, after injecting electrolyte, seal processing, namely battery assembly process is complete, the battery is complete. 4. To analyze the formation of large capacity lithium battery, battery products by special charge and discharge the battery charge and discharge equipment, testing each piece of the battery. Screening qualified battery products, waiting for the delivery. Low temperature lithium battery safety features comprehensive analysis: the low temperature characteristics of lithium battery safety analysis of 1. The lithium batteries with lithium battery safety features at low temperature the security of the 1) Overcharge: a single lithium-ion battery with 0, respectively. 2 c overcharge, and 1 c current until the voltage up to 4. Stop, 6 v lithium battery should not fire or explosion. As shown in the figure below, how to use the safety performance good low-temperature 18650 lithium batteries mainly depends on its electrical properties. As long as there is no problem in safety tests, it is a good battery. 2) Extrusion: single lithium battery, according to the standard of the battery after charging, the battery put in two plane, perpendicular to the plate extrusion ( Just squeeze the width) of lithium-ion batteries 。 The extrusion pressure between the two plate to 13. 0 kn± 0. 75 kn。 Once the maximum pressure, extrusion test can stop. In the process of test, a single lithium batteries can not have external short circuit, lithium battery is not fire or explosion.