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May , 24 2022
1. Failure: Unwinding correction limit Reason: When the unwinding mechanism is wearing the tape, the tape is not centered in the mode Solution: Adjust the sensor position or center the reel position 2. The upper and lower limits of the discharge floating roller are faulty Reason: The discharge pressure roller is not pressed tightly or the winding tension is not opened, and the potentiometer is abn...
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Jun , 01 2022
The polymer lithium-ion battery cell adopts aluminum laminated film composite packaging technology. When gas is generated inside the battery cell due to the occurrence of abnormal chemical reactions, the pocket will be charged and the battery core will swell.The performance of the battery cell (Capacity, Cycle life, C-rate, etc.) will fail seriously, making the battery cell unusab...
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Jun , 28 2022
The lithium-ion battery slurry coating process is a process in which a non-Newtonian fluid contacts, flows, and solidifies a solid substrate.Different from the contact between the solid state, the lithium battery slurry is sprayed from the coating head and coated on the copper foil and aluminum foil, and there will be dynamic changes in the liquid state, including adhesion, wetting, leveling, rebo...
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Jul , 07 2022
The principle of ultrasonic metal welding is a special method of using the mechanical vibration energy of ultrasonic frequency to connect the same metal or dissimilar metal. When the metal is ultrasonically welded, it neither transmits current to the workpiece nor applies a high temperature heat source to the workpiece, but under static pressure, the frame vibration energy is converted into fricti...
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Sep , 02 2022
In the production process of pouch cell battery, there are many factors that can lead to abnormal gas production, which can be divided into several categories: First, the film formation of the cell itself is unstable. In the subsequent cycle process, the SEI film on the surface of the negative electrode may fall off or become loose, and the SEI film(SEI Formation Machine) is reconstructed, accompa...
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Oct , 11 2022
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Oct , 11 2022
The negative electrode material is made into a negative electrode sheet by mixing, coating, rolling, shooting, and drying.Use a lithium sheet as the positive electrode, assemble it into a button battery for testing, and calculate the gram capacity of the material by testing the capacity of the button battery. Required materials and equipment; Positive powder Electrolyte LB-5275 Carbon black KS-6 A...
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Nov , 23 2022
There are several types of wrinkling of the lithium battery electrode sheets, the wavy edge of the lithium battery electrode, the wrinkle of the lithium battery electrode, and the wrinkling of the paint area. Of course, there are several degrees of wrinkling severity. Wrinkles in the coating area of the electrode will cause the surface of the bare cell to be uneven, and the stress conce...
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Dec , 01 2022
As the core equipment for the preparation of ternary materials, sintering equipment is generally used for sintering preparation in a fixed box-type muffle furnace during research and development.But in actual production, for higher production efficiency and suitable production cost, we must choose high-capacity sintering equipment such as roller kiln and rotary kiln. The structure of different sin...
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Apr , 11 2023
The micro-gravure coating method uses a gravure roll, the gravure roll surface is mounted on bearings, partially immersed in the feed pan, and the rotating shaft picks up the coating, After quantification by a flexible rigid scraper, the coating liquid is taken away by the reverse motion substrate to achieve uniform thin layer coating. The direction of rotation of the microgravure coating gravure ...
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May , 12 2023
During the mixing machine, transportation, and coating processes of the mixer, foreign objects such as dust or long flocs are mixed into the coating liquid or fall onto the wet coating surface,The surface tension of the coating at this location is affected by external forces, resulting in a change in intermolecular forces. The slurry undergoes a slight transfer, and after drying, a circular mark i...
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Aug , 22 2023
The humidity requirement during the production process of lithium-ion batteries is very high, mainly because uncontrolled or excessive moisture can have adverse effects on the electrolyte. The electrolyte, composed of lithium salts and organic solvents, serves as the medium for ion transport within the battery and ensures the advantages of high voltage and high energy density for lithium-ion batte...
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