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What are the hazards of lithium batteries and the hazards of lithium battery production. Most of the best-selling batteries on the market now are lithium batteries. Compared with other types of televisions, the most obvious function of lithium batteries is their longer battery life and larger capacity. However, as we all know, lithium batteries contain electrolyte, which can easily cause harm to the human body when it evaporates. So what are the hazards of lithium batteries? What are the hazards of lithium battery production?

The harmfulness of lithium batteries

1. Lithium ion batteries are absolutely harmful to the human body. The most harmful substance is electrolyte solution, which is an organic and volatile liquid with obvious corrosiveness. Inhaling volatile gases for a long time can cause damage to the respiratory tract;

2. If you are working on battery cells, the contents inside the cells are harmful to the human body and it is not recommended to go. You should wear a gas mask or mask when going to work. Previously, I opened a battery ingredient bucket without my knowledge, smoked it, and couldn't eat for a whole day. If I were doing PACK, it would have little impact on my body (some workstations require exposure to organic solvents), which is harmful;

3. Radiation. The so-called radiation refers to the phenomenon of radio frequency waves generated by high-frequency oscillations in circuits being emitted into space. Radiation of a certain frequency and intensity has an impact on the body.

4. The production process of lithium batteries on the production line, and whether it will cause (gas, water, and soil) pollution during the process, at the current stage of lithium battery production, there will be no (toxic heavy metal) pollution in lithium batteries.

Factors affecting the safety of lithium batteries

1) Internal factors

The electrode materials and electrolytes of lithium batteries are flammable, and heating (internal or external) can cause fires and decompose to produce gases, thereby increasing the possibility of battery explosions. Moreover, the strength of polymer isolation membranes nowadays is relatively low, which can easily damage this layer of film in the event of collision or overheating, leading to battery short circuits.

Meanwhile, defects in manufacturing processes can also easily lead to safety issues with lithium batteries. For example, if the ear of the battery cell is too long and comes into contact with the electrode or housing, it can cause a short circuit; Extreme ear pressure on the core causes a short circuit between the positive and negative poles; Leaving metal powder, copper foil, aluminum foil fragments, etc. between the two poles may cause diaphragm perforation and lead to a series of problems such as micro short circuits.

2) External factors

The external factors that affect the safety of lithium batteries are relatively complex, such as overcharging, external short circuits, violent impacts, etc., all of which may cause lithium battery self ignition.

The hazards of lithium battery production

● Heavy metal hazards. In the production of lead-acid batteries, positions such as lead alloy manufacturing, lead powder manufacturing, grid manufacturing, paste mixing, plate coating, plate splitting, ear brushing, plate wrapping, soldering, shell installation, and terminal welding can generate lead dust and smoke. During the production of zinc manganese dry batteries, lead dust is generated during the welding of zinc cylinders, and manganese dust can be generated during processes such as transportation, mixing, battery charging, and paper wrapping. Cadmium dust and nickel dust are generated in the production of nickel cadmium batteries, including batching, feeding, stirring, slurry pulling, coating, plate splitting, and winding. During the production of nickel hydrogen batteries, nickel and cobalt dust is generated from positions such as powder extraction, slurry preparation, slicing, pressing, and winding.

● Graphite dust hazards. During the production of lithium batteries, graphite dust is generated during the batching, coating, and slicing processes.

● Chemical toxicity hazards. In the production of lead-acid batteries, positions such as dispensing and screen printing may come into contact with organic solvents such as benzene, toluene, xylene, acetone, butanone, and ethyl acetate. Hydrogen fluoride can be produced in the injection position during lithium battery production, while ketones may come into contact with the rolling and cleaning positions. In the production of nickel hydrogen batteries, there are sodium hydroxide and potassium hydroxide in the injection process, and processes such as dispensing and screen printing may come into contact with chemical toxins such as toluene, xylene, and ethanol. During the production of lead-acid batteries, acid mist is generated during the processes of sulfuric acid storage, acid blending, acid addition, and charging.

● Noise hazards. In the production of lead-acid batteries, processes such as terminal manufacturing, grid manufacturing, plate collection, plate separation, ear brushing, cleaning, and demolding are involved. In the production of nickel cadmium batteries, processes such as stirring and plate separation are also involved. In the production of nickel hydrogen batteries, processes such as slicing, potting, bumping, and combination collision can generate noise.

● Harm to the human body. Battery production involves exposure to various heavy metals such as lead, nickel, cadmium, cobalt, etc. These heavy metals and their compounds can invade the body from the respiratory tract, skin, and digestive tract, leading to toxic encephalopathy, toxic kidney disease, anemia, bronchitis, chemical pneumonia, chronic respiratory inflammation, respiratory cancer, cobalt cardiomyopathy, allergic dermatitis, and other diseases. Severe heavy metal poisoning can lead to toxic encephalopathy, nasal septum perforation, renal dysfunction, and more.

● High temperature hazards. High temperature operations exist in processes such as lead dissolution, casting plates, lead manufacturing, and soldering terminals.

Although lithium batteries have certain hazards, as long as we use them correctly according to the instructions, this risk can be avoided. We believe that as long as lithium battery manufacturers strictly follow quality standards for production and testing, as long as users or shippers actively understand lithium battery related knowledge and comply with relevant regulations, "lithium" can still go global.

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