Lithium-ion Pouch Battery Cell Laboratory Pilot Line Solution

Proportioning and Weighing: The first process is proportioning and weighing, that is, add solvent after the positive materials are mixed evenly, and mix them into slurry by vacuum mixer. Mixing of ingredients is the basis for subsequent manufacturing process of lithium battery, and high-quality mixing is the basis for high-quality completion of subsequent coating and rolling process;

Key input: raw material formula, Mixing process technique; Output: positive electrode and solid electrolyte slurry;

Slurring Mixing: The first process is the homogenate, i.e. add the solvent after the positive electrode/solid battery materials are mixed evenly, and mix them into slurry by the vacuum mixer. Mixing of ingredients is the basis for subsequent process of lithium battery, and high-quality mixing is the basis for high-quality completion of subsequent coating and rolling process;

Key input: raw material formula, homogenate process flow; Output: positive electrode and solid electrolyte slurry;

Coating: the slurry coating is the next process following the preparation of slurry. The main purpose of this process is to evenly coat the slurry with good stability, viscosity and mobility on the positive collector. Electrode sheet coating has important significance for lithium cells, mainly reflected on the following points: 1. It has important significance for the capacity of finished batteries; 2. Important to battery safety; 3. Important to battery performance consistency; 4. Significant to battery life.

Key input: cathode slurry, foil and coating process parameters; Output: positive sheet material;

Key input: solid electrolyte slurry, coating process parameters; Output: solid electrolyte separator;

Calendering/ Rolling Press: After the electrode sheet is coated and dried, the peeling strength of the active substance and the current collector foil is very low. At this time, it needs to be rolled to enhance the adhesion strength between the active substance and the foil, so as to prevent it from peeling off during electrolyte immersion and future battery use.

Key input: positive electrode sheet, rolling process parameters, die cutting process parameters;

Output: positive sheet material;

Tab Notching (Die cutting): cut the tab with a suitable knife die and cut the positive electrode sheet to the correct size;

Key input: postive electrode/Cathode material, slitting process parameters and die cutting process parameters;

Output: positive sheet material

Negative electrode sheet making/Stacking：Lithium strip cutting: the lithium metal roll is cut to the required electrode sheet size through die cutting, and then press the lithium sheet onto the electrode tab through physical engagement/meshing

Key required input: lithium metal negative electrode coil;

Hot press test: hot pressure and test the stacked battery cell. Check whether there is short circuit/micro short circuit in the internal structure of the battery cell through high voltage test, so as to eliminate defective products.

Key required input: pouch battery cell;

TAB welding: Weld the electrode sheets with the tabs through the ultrasonic welding process.
Put the finished cell into the aluminum-plastic film shell after punching, and conduct the top and side packaging of aluminum-plastic film through the heat sealing process in the top and side sealing machine.

Key input: electrode sheet cell, aluminum-plastic film and packaging process parameters;

Output: Pouch battery cell after heat sealing.

Formation: Composition: conduct a small current charge and discharge to the manufactured lithium ion battery.  (1) It is activated by the first charge and discharge; (2) Generation of SEI film

Sorting: After the battery assembly is filled with liquid for the first time, it can be placed after being charged and formed, either at normal temperature or at high temperature. Both are used to stabilize the nature and composition of the SEI film formed after the initial charge and formation, and ensure the stability of the electrochemical performance of the battery. (1) Facilitate SEI structure restructuring and form a loose porous membrane; (2) More accurate and stable voltage; (3) Fully soak the electrode sheet

Key input: battery cell and chemical composition separation process parameters after liquid injection; Output: finished battery cell

Degassing: the formed battery punctures the product air bag through the second sealing machine, extracts the internal gas and performs packaging

Key required input: battery cell

Output: complete battery cell.

Grading: Capacity division: divide the battery into different grades according to the internal resistance, voltage and discharge capacity of the battery through charge and discharge test, and enter the PACK process according to different categories.

Key input: battery cell after secondary sealing and process parameters of volume separation;

Output: qualified battery cell

FAQ

Q: What are the unique technical features of Mikrouna’s lithium-metal solid-state battery equipment?

A: Our equipment employs advanced solid-state electrolyte preparation technology, enabling high-precision membrane deposition that ensures uniformity and stability of the electrolyte membrane. Additionally, it boasts efficient electrode coating and packaging processes, enhancing battery performance and consistency.

Q: How efficient is Mikrouna’s lithium-metal solid-state battery equipment in production?

A: Our equipment is meticulously designed and optimized for high production efficiency while maintaining product quality. Through automation control and advanced process flows, we significantly reduce production cycles to meet large-scale market demands.

Q: How is the stability and reliability of the equipment ensured?

A: We use high-quality components and materials, subject them to rigorous quality inspections. Extensive reliability testing and optimization are conducted during R&D, complemented by comprehensive after-sales service and technical support to guarantee long-term stability and reliability.

Q: What are the energy-saving advantages of Mikrouna’s equipment?

A: Our equipment adopts an energy-efficient design concept, effectively reducing energy consumption during operation. By optimizing the power system and energy management, we minimize unnecessary energy waste, helping users lower production costs.

Q: Are the operation and maintenance of the equipment complex?

A: We strive to provide user-friendly equipment with a simple and intuitive operation interface, requiring minimal training for operators. Detailed maintenance manuals and training services are also provided to facilitate easy routine maintenance and care.

Q: How does Mikrouna ensure the quality of lithium-metal solid-state batteries produced by its equip

A: The equipment is equipped with high-precision detection and monitoring systems to real-time monitor key production parameters. Coupled with a rigorous quality control system, every batch of products undergoes strict testing to meet high-quality standards.

Q: What about customization services for the equipment?

A: We offer customized equipment solutions tailored to clients’ specific needs and production scales. Whether for small R&D lines or large-scale production lines, we can design the most suitable equipment configurations.

Q: What safety considerations have been incorporated into Mikrouna’s equipment?

A: The equipment features multiple safety protection mechanisms, including overvoltage and overcurrent protection, as well as fire and explosion-proof designs. Adherence to relevant safety standards and regulations throughout production ensures the safety of operators and equipment.

Q: How does Mikrouna handle equipment upgrades and replacements?

A: We continuously invest in R&D, keeping abreast of industry trends and market demands to upgrade and improve our equipment. Upgrade services are provided to ensure that clients’ equipment remains advanced and competitive.

Q: Compared to competitors, what are the advantages of Mikrouna’s equipment?

A: Our equipment excels in technological innovation, performance stability, production efficiency, customization services, and after-sales support. By continuously enhancing our technical capabilities and service levels, we provide clients with more valuable lithium-metal solid-state battery production equipment.