Amid the accelerated iteration of lithium-ion battery technology, "safety and controllability, reliable precision, and flexible adaptability" for laboratories and pilot lines have become core demands for enterprises' R&D and innovation. As a national high-tech enterprise and a national "Little Giant" enterprise specializing in niche sectors, Yixinfeng has been deeply engaged in the
Lithium Battery equipment field for 24 years. Based on its in-depth understanding of the entire battery cell R&D process, it has developed a safe space for battery cell test lines that meets the requirements of high safety, high cleanliness, and high flexibility. From space design and process adaptation to equipment matrix, it comprehensively addresses pain points in the R&D phase such as "uncontrolled moisture, static electricity risks, precision deviations, and safety hazards", providing a stable and controllable test environment for the R&D of multiple systems including pouch batteries and prismatic batteries.
The sensitivity of lithium battery cell R&D to the environment far exceeds that of mass
Production Lines — excessive moisture in electrode sheets can reduce battery cycle life by over 30%, static breakdown of separators may cause safety accidents, and insufficient cleanliness can lead to electrode sheet powder shedding and a surge in defect rates. Yixinfeng's safe space for battery cell test lines addresses these pain points with "stringent standards":
- Cleanliness Control: Key process areas (coating, stacking, electrolyte injection) meet Class 100,000 cleanliness standards, equipped with local exhaust and overall ventilation systems. The emission concentration of solvent volatile gases is far below industry limits, avoiding the impact of organic solvents such as NMP and electrolyte on personnel health and the environment.
- Precise Temperature & Humidity Control: The workshop temperature is controlled at 23-25℃ (±1℃ fluctuation), with a dew point stably maintained below -55℃. This fundamentally suppresses side reactions between moisture and battery cell materials, ensuring electrolyte stability and electrode sheet drying effects.
- Comprehensive Static Protection: The floor uses anti-static PU coating (surface resistance: 10⁶-10⁹Ω). Work clothes, equipment, and workbenches are all connected to an independent grounding system, controlling static voltage within 100V to eliminate issues such as separator breakdown and dust adsorption caused by static electricity.
- Explosion-Proof & Emergency Design: The lighting system adopts explosion-proof LEDs (illuminance: 300-500lux, meeting precision operation needs). Emergency stop buttons and gas detection alarms are installed in key equipment areas, forming a "early warning - handling - emergency response" safety loop.
Centered on the full R&D process of pouch batteries, Yixinfeng's safe space for battery cell test lines also caters to multi-specification and small-batch trial production needs. Its spatial layout is deeply matched with process links, enabling one-stop R&D "from slurry preparation to performance testing":
- Slurry Preparation Area: Equipped with a vacuum planetary defoaming disperser (mixing volume: 0.05-1L, vacuum degree ≤ -0.098MPa), which simultaneously achieves high-speed dispersion, planetary mixing, and vacuum defoaming to solve problems of "uneven dispersion and residual bubbles" in high-viscosity, high-solid-content slurries. It is paired with an electronic balance (precision: 0.01g), a 刮板 fineness gauge (range: 0-150μm), and a viscometer (measurement range: 1-2,000,000 mPa・s) to ensure controllable proportioning precision of positive/negative electrode powders, conductive agents, and electrolyte, as well as slurry rheological properties.
- Electrode Sheet Preparation Area: The YXF-TB100 coater (coating precision: ±3μm, effective area: 120×80mm) supports small-volume slurry coating and can be placed in a glove box for sensitive material R&D. The YXF-GY120 heated roller press (temperature precision: ±0.5℃, pressable thickness: 0-2mm) enables precise compaction of electrode sheets, with roller hardness ≥ HRC62 and surface finish ≥ Ra0.4 to prevent powder shedding. The YXF-MQ200 die-cutting machine uses imported Japanese blades, ensuring burr-free electrode sheet edges without powder shedding and compatibility with customized sizes within 120×80mm.
- Battery Cell Assembly Area: The YXF-DP170 manual stacker (alignment precision: ±0.3mm, maximum stacking layers: 100) achieves precise lamination of positive/negative electrode sheets and separators. The YXF-XC40K ultrasonic spot welder (secure welding without false welding) ensures reliable connection between tabs and foils. The YXF-CK170 pit punching machine (punching size: 120×80mm, thickness: 1-10mm) cooperates with the YXF-CQ140 cutting machine (tungsten steel blade) to ensure flat forming and consistent dimensions of aluminum-plastic film.
- Electrolyte Injection & Packaging Area: A quantitative liquid feeder (range: 0-25ml, precision: ±0.5%) enables high-precision electrolyte injection. It is paired with the YXF-FK150 vacuum sealer (vacuum degree: -100KPa, sealing head temperature precision: ±2℃), whose detachable electrical box can pass through the glove box transition chamber, and manual cover avoids pneumatic crushing risks, solving the pain points of "multiple air pipes and complex operation" of traditional equipment.
- Formation & Testing Area: The BS-5V6A-8 formation/grading/testing machine (8 independently controlled channels, current precision: ±0.05% FS) supports 265 process step settings such as constant current charging/discharging and standing. It can record key parameters including AC internal resistance (precision: ±0.2% RD) and charge-discharge curves, with an energy feedback efficiency exceeding 60%, balancing R&D data reliability and energy-saving needs.
Yixinfeng is well aware that the reliability of a test line depends on the performance of each piece of equipment — we abandon the "general equipment assembly" model and customize core equipment for lithium battery R&D characteristics to achieve in-depth synergy of "equipment - process - safety":
- Moisture Control Equipment: The EM-MT-100 moisture analyzer (detection range: 0-500ppm, corrosion-resistant phosphorus pentoxide platinum sensor) accurately measures moisture in electrolytes (≤50ppm), electrode sheets, and powders. Paired with a 50L vacuum oven (ultimate vacuum degree ≤ 100Pa, temperature control precision: ±1℃), it realizes complete NMP removal from electrode sheets and deep drying of battery cells before electrolyte injection, avoiding issues such as unstable SEI films and swelling caused by moisture.
- Precision Preparation Equipment: The vacuum aluminum plate (200×100mm) of the YXF-TB100 coater ensures flat substrates. The motor-driven coating speed is adjustable from 0-10mm/s, and only 5-10ml of slurry is needed for coating, significantly reducing R&D material waste. The YXF-GY120 heated roller press supports roller temperature adjustment from room temperature to 130℃, meeting special process needs such as dry electrode sheet and electrolyte film formation.
- Safety Protection Equipment: In addition to the overall anti-static and explosion-proof design of the workshop, the supporting protective clothing is made of anti-static and chemical corrosion-resistant materials. It effectively isolates electrolyte and dust from harming the human body while reducing the impact of moisture emitted by personnel on the clean environment, forming a three-layer protection of "space - equipment - personnel".
Enterprises have different test line needs based on their R&D directions (e.g., high energy density, long cycle life, solid-state batteries). Yixinfeng provides a service model of "standardized foundation + customized upgrading":
- Space Customization: Layout can be adjusted according to customer site dimensions (standard dimension in documents: 6200×2450×3100mm) to adapt to different battery cell specifications (compatible with maximum 120×80mm, ≤10Ah battery cells, with an efficiency of 20 pieces per batch).
- Equipment Selection: Optimize equipment lists based on R&D stages (laboratory scale/pilot scale). For example, roller press and die-cutting machine specifications can be simplified in the laboratory scale stage, while automated connection (e.g., coating-roller press linkage) is enhanced in the pilot scale stage.
- After-Sales Support: After equipment delivery, services including "installation and commissioning + operation training + regular inspection" are provided. Core equipment (e.g., vacuum oven, moisture analyzer) has a 1-year warranty, and lifelong spare parts supply and technical support are offered to ensure long-term stable operation of the test line.
As a "technology pioneer" in the lithium battery equipment field, Yixinfeng always takes "solving customers' actual pain points" as its core, integrating 25 years of equipment R&D experience and understanding of battery cell processes into the design of test line safe spaces. From each precise weighing in slurry preparation to each set of reliable data in battery cell testing, Yixinfeng is committed to creating a R&D environment of "no safety hazards, repeatable data, and scalable processes" for enterprises, making lithium battery innovation more efficient and secure!
