- Dacuum Dry Screw Vacuum Pumps | Industrial Vacuum Equipment Manufacturer

Cases

Dacuum DPH260/2600 Screw Vacuum Pump
Empowering Lithium Battery Electrolyte Filling Process

In the lithium battery cell electrolyte filling process, vacuum pumps are responsible for degassing before filling, assisting infiltration during filling, and exhausting after filling, which directly affects the cycle life of battery cells. This process requires a stable vacuum of 50–150 Pa and a filling cycle of ≤ 60 seconds per cell, while preventing corrosion of equipment by 10–40 μm electrolyte aerosol particles. Conventional vacuum pumps suffer from slow pumping response and frequent blockage. In contrast, the customized solution of the Dacuum DPH260/2600 vacuum unit, with a peak pumping speed of 1900 m³/h and an ultimate pressure ≤ 0.1 Pa, serves as essential equipment for improving quality and efficiency in cell production.

+38%

Boosted Ultra-high Vacuum Pumping Speed

+28%

Improved Corrosion Resistance

-16%

Reduced Energy Consumption

Three core pain points

Pumping speed response lag

Traditional vacuum pumps require 20 seconds or more to establish pumping speed in the range of 50~150 Pa, failing to match the rapid filling cycle and resulting in insufficient degassing of battery cells and uneven electrolyte infiltration.

Electrolyte corrosion and particle blockage

Atomized particles of 10~40μm easily enter the pump body and corrode components. Traditional filters need to be replaced every 15 days, leading to high maintenance costs and production disruptions.

Vacuum fluctuation

During the filling process, vacuum is susceptible to volatile gases. Traditional vacuum pumps have insufficient sealing, causing vacuum fluctuations exceeding ±10 Pa and resulting in residual bubbles inside cells.

Solution

Three Major Technological Innovations of DPH260/260 Unit

Fast response to match filling cycle

Adopt Dacuum DPH260/2600 vacuum unit (equipped with 7.5+7.5kW dual motors and 6000rpm rotational speed), and optimize the design of rotors and air inlet channels. The pumping speed establishment time in the range of 50~150Pa is less than 8 seconds, which is 38% higher than that of traditional vacuum pumps. With intelligent frequency conversion control, the pumping speed can be automatically adjusted to match the filling cycle, reducing energy consumption by 16% under 100Pa working conditions. In the 18650 cell electrolyte filling process, a single DPH260/2600 unit can save more than 120,000 yuan in electricity costs annually and increase production efficiency by 15%.

Corrosion-resistant and anti-clogging system: Compatible with DPH unit interface characteristics

For the ISO160 suction port of DPH260/2600, PTFE coated filters (for 10μm particle filtration) and electrolyte recovery modules are equipped, and the filters are treated with hydrophobic and oleophobic properties. Relying on differential pressure sensors, ultrasonic cleaning is automatically activated when the filter pressure difference exceeds 0.8kPa (within 30 seconds). Combined with the air flow guidance of the KF50 exhaust port of DPH unit, the filter replacement cycle is extended to once every six months.

High-precision sealing and pressure stabilization: Ensure stable vacuum of DPH unit

Adopt FKM‑SiC composite sealing and is equipped with a DPH260/260 closed‑loop pressure control system. It automatically adjusts pumping speed when vacuum fluctuation exceeds ±3 Pa to keep deviation within ±2 Pa. An electrolyte isolation diaphragm is fitted in the sealing chamber, limiting leakage rate ≤5 mL/h to guarantee continuous unit operation.

Fast response to match filling cycle

Corrosion-resistant and anti-clogging system: Compatible with DPH unit interface characteristics

High-precision sealing and pressure stabilization: Ensure stable vacuum of DPH unit

Reliability Verification

Full-process Operation Verification of DPH260/260 Unit

Vacuum performance

Vacuum degree: Deviation within ±2Pa in the range of 50~150Pa (proportion ≥99.4%), pumping speed establishment time ≤8 seconds;
Adaptability: Single cell filling cycle ≤60 seconds, infiltration uniformity rate ≥99.6%, residual bubble rate <0.3%.

Equipment stability

MTBF ≥ 11,000 hours, and core components achieve failure-free operation for ≥ 15,000 hours;
Annual downtime caused by clogging ≤ 0 times, and filter cleaning takes only 5 minutes per time.

Vacuum performance

Equipment stability

Technical Consulting

Accurate Q&A on Vacuum Technology | Design of Customized Working Conditions | Full Process Guidance on Selection and Adaptation

Dacuum DPH260/2600 Screw Vacuum Pump Empowering Lithium Battery Electrolyte Filling Process

Three core pain points

Pumping speed response lag

Electrolyte corrosion and particle blockage

Vacuum fluctuation

Solution

Fast response to match filling cycle

Corrosion-resistant and anti-clogging system: Compatible with DPH unit interface characteristics

High-precision sealing and pressure stabilization: Ensure stable vacuum of DPH unit

Reliability Verification

Vacuum performance

Equipment stability

Technical Consulting

Dacuum DPH260/2600 Screw Vacuum Pump
Empowering Lithium Battery Electrolyte Filling Process