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Because the positive plate of the electric lithium-ion battery cell is made of aluminum strip, tin can not be directly welded, so it is necessary to add nickel strip. Ultrasonic metal spot welding method is usually used: high frequency oscillation occurs by ultrasonic, which makes the friction between two metal plates heated locally, resulting in fusion connection. Frequency: 20K ~ 35kHz, time: about 0.3 seconds. Pay attention to the selection of suitable welding equipment for metal ultrasonic welder.
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Do not use lithium batteries (especially notebook lithium batteries) for a long time when the equipment is powered externally. Even if your laptop has good heat dissipation, a long-term 100% of the electricity is equal to the murder of lithium batteries.
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In the long run, with the consolidation of the domestic lead-acid battery industry, the increase of the market share of lithium-ion electric bicycle will bring further growth momentum to the lithium-ion battery industry. Due to the high price of lithium-ion batteries, the state's rectification of lead-acid batteries and the decline in the price of lithium-ion electric bicycles, the proportion of lithium-ion batteries will gradually rise, bringing new growth points to the industry, and power battery manufacturers will gain room for growth.
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With the rapid development of household electric vehicles, the use of lithium batteries is becoming more and more popular, but the explosion and other dangerous accidents caused by lithium batteries are also increasing. Many people think that since lithium batteries are so dangerous, why don't they use other batteries, such as batteries? Today, in view of this problem and the safe use of lithium batteries, we will make a knowledge popularization.
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The rapid development of new electronic equipment and electric vehicles requires future rechargeable batteries to have high power, high energy density and fast charging performance. Among them, ion transport is an important link in the operation process of rechargeable batteries. The accurate regulation of ion transport behavior is helpful to achieve stable lithium metal batteries and fast rechargeable lithium-ion batteries, and accelerate the development and practical application of high-performance rechargeable batteries.
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The safety performance of cathode materials mainly includes overcharge safety and thermal stability. In the oxidation state, the cathode materials undergo exothermic decomposition reaction and release oxygen.
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