Application of Lithium Battery Dry Screw Vacuum Pump

• Lithium manganese batteries generally have a nominal voltage higher than 3.0 volts, making them more suitable as integrated circuit power supplies and widely used in computers, calculators, and watches.

  Lithium ion batteries are widely used in mobile phones, laptops, electric tools, electric vehicles, street light backup power supplies, aviation lights, and household appliances, making them a very large application group.

  Lithium batteries are used in energy storage power systems such as hydropower, firepower, wind power, and solar power plants, as well as uninterruptible power sources for postal and telecommunications communication, as well as in various fields such as electric tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace, and more.

  Lithium ion batteries have been widely used in portable appliances such as laptops, cameras, and mobile communication due to their unique performance advantages. The developed high-capacity lithium-ion batteries have started trial use in electric vehicles and are expected to become one of the main power sources for electric vehicles in the 21st century, and will be applied in artificial satellites, aerospace, and energy storage. With the shortage of energy and the pressure of environmental protection in the world. Lithium batteries are widely used in the electric vehicle industry, especially with the emergence of lithium iron phosphate batteries, which has further promoted the development and application of the lithium battery industry.

   
• 锂锰电池一般有高于3.0伏的标称电压，更适合作集成电路电源，广泛用于计算机、计算器、手表中。
• 锂离子电池大量应用在手机、笔记本电脑、电动工具、电动车、路灯备用电源、航灯、家用小电器上，可以说是非常大的应用群体。
• 锂电池应用于水力、火力、风力和太阳能电站等储能电源系统，邮电通讯的不间断电源，以及电动工具、电动自行车、电动摩托车、电动汽车、军事装备、航空航天等多个领域。
• 锂离子电池以其特有的性能优势已在便携式电器如手提电脑、摄像机、移动通讯中得到普遍应用。开发的大容量锂离子电池已在电动汽车中开始试用，预计将成为21世纪电动汽车的主要动力电源之一，并将在人造卫星、航空航天和储能方面得到应用。随着能源的紧缺和世界的环保方面的压力。锂电被广泛应用于电动车行业，特别是磷酸铁锂材料电池的出现，更推动了锂电池产业的发展和应用。

• The production process of lithium batteries is divided into three major stages: first, electrode fabrication, second, cell fabrication, and third, battery assembly. In the production process of lithium batteries, the production of electrode plates is the foundation, and the production of battery cells is the core. Battery assembly is related to the quality of lithium battery products. The specific process of lithium battery production includes positive electrode slurry, negative electrode slurry, positive electrode sheet, negative electrode sheet, steel shell assembly, liquid injection and testing, and packaging.

  1. Preparation of electrode slurry

  Mainly by mixing electrode active materials, binders, solvents, etc. together, thoroughly stirring and dispersing to form a slurry.

  2. - Coating

  Apply the prepared slurry evenly to the collector (aluminum foil or copper foil, etc.) with the specified thickness and dry the solvent.

  3. - Pole punching

  Punch and cut the electrode made in the previous step into the specified size and shape.

  4. - Lamination

  Assemble the positive and negative electrode plates and diaphragms together, and after completing the adhesive application, form the electrode core.

  5. - Assemble the soft pack battery

  Install the electrode core produced in the previous step into the aluminum plastic film that has already been punched out, and complete the top seal, side seal, etc. (also leaving a mouth for liquid injection) to form a soft pack battery without liquid injection.

  6. - Liquid injection

  Inject a specified amount of electrolyte into the interior of the soft pack cell. Of course, the battery cell needs to be baked and injected in a low humidity environment, as excessive moisture content is not good.

  7. - Battery sealing

  Extract and seal the gas inside the battery cell in a vacuum environment.

• 锂电池生产工艺流程分为三大工段，一是极片制作，二是电芯制作，三是电池组装。在锂电池生产工艺中，极片制作是基础、电芯制作是核心，电池组装关系到锂电池成品质量。锂电池生产工艺流程具体环节包含正极拉浆、负极拉浆、正极片、负极片、钢壳装配、注液及检测以及包装等。
• 1.--电极浆料制备
  • 主要是将电极活性材料、粘结剂、溶剂等混合在一起，充分搅拌分散后，形成浆料。
• 2.--涂布
  • 将制备的浆料以指定厚度均匀涂布到集流体（铝箔或铜箔等）上，并烘干溶剂。
• 3.--极片冲切
  • 将上一步制作出来的极片冲切成指定的尺寸形状。
• 4.--叠片
  • 将正负极片、隔膜装配到一起，完成贴胶后，形成极芯。
• 5.--组装软包电池
  • 将上一步生产的极芯装入已经冲好坑的铝塑膜，并完成顶封、侧封等（还要留个口注液），形成未注液的软包电池。
• 6.--注液
  • 将指定量的电解液注入软包电芯内部。当然电芯要经过烘烤，并且在低湿度环境下进行注液操作，水分含量过多就不好了。
• 7.--电池密封
  • 在真空环境中将电芯内部的气体抽出并完成密封。

• To ensure the quality of the coating, the electrode slurry must be degassed during the stirring process. The degassing pressure should be controlled at a level slightly higher than the saturated vapor pressure of the solvent.
• 为确保涂布的品质，必须在搅拌过程中对电极浆料进行脱气。脱气压力控制在略高于溶剂饱和蒸气压的水平。

• The electrodes need to be vacuum dried to achieve the lowest moisture content. Laibao dry and oil vacuum systems are widely used in single and continuous electrode drying boxes.
• 电极需真空干燥以实现最低的含水量。莱宝干式和油式真空系统广泛运用于单体式和连续式电极干燥箱上。

• The uniformity of the electrolyte in the battery is the key to affecting the quality of the battery. Therefore, each battery (bag shaped, cylindrical or prismatic) needs to be evacuated before initial charging and continuously degassed during the charging process.
• 电池中电解液的是否均匀是影响电池质量的关键。因此每个电池（袋状-，圆柱状-或棱柱形电池）在初始充注前要抽空，充注过程中还要持续脱气。

• Lithium ion batteries have a high energy density and the electrolyte is flammable, making the sealing of all batteries an important safety standard. Electric vehicles and aircraft can only use leak tested lithium-ion batteries. The Leibao leak detector is a key equipment for battery leak detection.
• 锂离子电池具有很高的能量密度而且电解液是易燃物，所有电池的密封性是一个重要的安全标准。电动汽车和飞机只能使用经过泄漏测试锂离子电池。莱宝检漏仪是电池检漏的关键设备。

Unigy provides customers with industrial equipment such as oil-free compressors, nitrogen compressors, sulfur hexafluoride (SF6) compressors, helium compressors, high-pressure machines, dry screw vacuum pumps, Leibao leak detectors, and Leibao vacuum pump oil. We not only provide customers with air compressors, but also provide customers with oil-free compressed gas system solutions. Our clients include BYD, Hefei Guoxuan, AVIC Lithium Battery, Funeng Technology, ATL, CATL, Tianjin Lishen, Great Wall Motors, and others widely used in the lithium battery industry.