Lithium battery workshop rotary dehumidifier

　　Lithium battery workshopParameters of rotary dehumidifier

The Platinum Lithium Battery Dehumidifier adopts a honeycomb wheel made of Swedish imported Proflute high-density, high-performance silicon removal and separation screen composite. This wheel not only has a large dehumidification capacity, but also has the characteristics of acid resistance, alkali resistance, fire resistance, washability, and long service life. By dividing the honeycomb wheel into three zones, the dew point at the outlet of the honeycomb wheel dehumidifier can reach -40 ℃~-70 ℃, which is currently the leading level of dehumidification dryers in China and even internationally.

feature

1. Programmable control, human-machine interface, clear at a glance.
2. The regeneration temperature is controlled by PID and has over temperature protection and alarm system.
3. Equipped with timed operation and delay protection functions, greatly improving the service life of the dehumidification wheel
4. Due to the use of PID control for regeneration temperature, humidity can be precisely controlled, resulting in significant energy-saving effects.
5. The programmable computer controller displays the operation status of each status point and has self diagnostic function.
6. Both regeneration and treatment are equipped with filtering devices to extend the service life of the dehumidification wheel.

Parameter Table of Platinum Lithium Battery Dehumidifier

Why do lithium battery workshops need dehumidification?

Excessive moisture can lead to battery performance damage, commonly caused by issues such as bulging, internal micro short circuits, decreased charge and discharge performance, and shortened lifespan. This phenomenon is common in all lithium-ion batteries that use non-aqueous electrolytes. Therefore, strict control of the production process in a water free environment is required in the battery manufacturing process, especially in the liquid filling and packaging process where deep dehumidification of the air is necessary. Many domestic lithium battery companies adopt advanced refrigeration dehumidifiers androtary dehumidifierThe process ensures a continuous and stable pass rate of lithium battery quality.

Lithium battery production process diagram

The production and manufacturing of lithium batteries is actually a process in which each process step is closely interconnected. Generally speaking, the production of lithium batteries includes electrode manufacturing processes, battery assembly processes, and final injection, pre charging, chemical transformation, and aging processes. In these three stages of the process, each step can be divided into several key processes, and each step will have a significant impact on the final performance of the battery.

In the production and manufacturing process of lithium batteries, each step will cause a certain amount of waste, mainly due to personnel operation, equipment failure, unsuitable environment, etc. The impact caused by personnel and equipment is controllable and small-scale, but unreasonable temperature and humidity can lead to a large and fatal rate of product failure. Therefore, in order to ensure a good product yield, a specialized product for lithium-ion workshop rotary dehumidifiers has been introduced.

Temperature and humidity requirements for lithium electric vehicle rooms

The temperature, humidity, and cleanliness requirements for each process stage of lithium batteries vary depending on the type and application scenario of the lithium battery. The temperature and humidity requirements for the injection workshop and glove box process section are the highest. Generally, the injection workshop equipped with glove boxes only needs to control the humidity below 10% or 5%. Without glove boxes, the dew point temperature of the entire injection workshop needs to be controlled at -45 ℃ or even -60 ℃. The details are shown in the table below:

Classification of lithium-ion batteries

The meaning and classification of the lithium-ion battery industry indicate that currently, lithium-ion batteries on the market can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries.

1. Lithium metal battery: Lithium metal battery is developed by SolidEngergy at MIT, which can reduce the volume of current lithium-ion batteries by half and can be used in electric vehicles in the future. Although graphite has been proven to be the best and most reliable material for making cathodes to date, it holds a limited amount of ions. Researchers have always hoped to replace graphite with lithium metal foil, which can accommodate more ions. However, lithium metal foil often has adverse reactions with electrolytes, leading to electrolyte overheating and even combustion.

2. Lithium ion battery: Lithium ion battery is a type of secondary battery that relies heavily on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+is intercalated and deintercalated back and forth between two electrodes: during charging, Li+is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium rich state; When discharging, it is the opposite. The meaning and classification of the lithium-ion battery industry indicate that on October 9, 2019, the Royal Swedish Academy of Sciences announced that the 2019 Nobel Prize in Chemistry would be awarded to John Goodenough, Stanley Whittingham, and Akira Yoshino, in recognition of their contributions in the field of lithium-ion battery research and development.

Current situation of lithium-ion batteries

China, Japan, and South Korea have formed a tripartite situation in the lithium-ion battery industry. Before 2000, over 88% of lithium-ion batteries worldwide were produced in Japan; After 2000, China and South Korea successively invested in the lithium-ion battery industry and began mass production, forming a tripartite competition with Japan. Currently, lithium-ion batteries produced in China, Japan, and South Korea account for over 95% of global production. Domestically, CATL and BYD firmly occupy the first tier, with a market share of over 70%. In earlier years, BYD dominated the market with its lithium iron phosphate batteries, but later CATL's ternary lithium batteries caught up; Combined with the new changes in the post subsidy era, lithium iron phosphate batteries are expected to have a second spring.