Lithium batteries need to purify the workshop because lithium batteries can be regarded as a chemical reaction box, and there is always a dynamic balance of chemical reaction inside. If there are other impurities in this reaction, it will inevitably break the equilibrium of the reaction. If it is light, it will lead to problems such as high internal resistance of the battery and high self-discharge. In severe cases, crystals of impurities will accumulate on the surface, possibly piercing the battery separator and causing internal short circuits of the positive and negative electrodes.
Lithium is a metallic element with the chemical symbol Li (its English name is lithium). It is a silvery-white metal, very soft, chemically active and the lightest among the metals. In addition to being used in the atomic energy industry, it also makes special alloys, glass sspecial (fluorescent screen glass used in televisions) and lithium batteries. In lithium batteries, it is used as the battery anode.
Lithium batteries are also divided into two categories: non-rechargeable and rechargeable. Non-rechargeable batteries are called disposable batteries, which can only convert chemical energy into electrical energy once and cannot convert electrical energy into chemical energy (or the reduction performance is extremely poor). Rechargeable batteries are called secondary batteries (also called storage batteries). It can convert electrical energy into chemical energy and store it. When used, it can convert chemical energy into electrical energy. It is reversible, like the main characteristics of electrochemical energy lithium batteries.
The greatest characteristic of lithium batteries is their energyhigh specific energy requirements. What is specific energy? Specific energy refers to energy per unit of weight or volume. Specific energy is expressed in Wh/kg or Wh/L. Wh is the unit of energy, W is the watt, h is the hour; kg is the kilogram (unit of weight) and L is the liter (unit of volume). Here is an example to illustrate: the rated voltage of the AA nickel-cadmium battery is 1.2V, its capacity is 800mAh, and its energy is 0.96Wh (1?2V × 0?8Ah). The rated voltage of the No. 5 lithium manganese dioxide battery of the same size is 3V, its capacity is 1200mAh, and its energy is 3.6Wh. The volumes of these two batteries are the same, so the specific energy of lithium-manganese dioxide batteries is 3.75 times that of nickel-cadmium batteries.
An AA nickel-cadmium battery weighs about 23g, while an AA lithium-manganese dioxide battery weighs about 18g. A lithium manganese dioxide battery is de 3 V, while two nickel-cadmium batteries are only 2.4 V. Therefore, when using lithium batteries, the number of batteries is small (reducing the size and weight of the products portable electronics) and the battery has a long life.
In addition, lithium batteries have the advantages of stable discharge voltage, wide operating temperature range, low self-discharge rate, long service life. storage, a memory effect and an absence of pollution.
The disadvantage of lithium batteries is that they are expensive, so they are not widely used at present. They are mainly used in handheld computers, PDAs, communication equipment, cameras, satellites, missiles, torpedoes, instruments, etc. With the development of technology, process improvement and increase in production volume, the price ofLithium batteries will continue to decline and their applications will become more common.
What is the roll cutting work in the lithium battery rolling workshop?
Between 500 and 700. The purification of the battery factory is estimated to be around 5,000 (Including water and electricity bills), the rent for a sewage treatment plant ranges from a few hundred yuan to several thousand yuan per square meter, with 500 to 700 being suitable, depending on personal needs . Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution.
The roll cutting positions in the lithium battery roll manufacturing workshop may require the operation of the roll cutting machine, product quality testing, etc. Attention must be paid to safety and operating regulations. InAt the same time, the position generally requires standing or sitting to operate the machine. There will be a certain amount of noise and dust interference during work, and you need to get used to such a working environment. For individuals, their suitability for this position should be assessed based on their own circumstances.