Unipolar plates (also known as monopolar plates or cooling plates) are critical components in hydrogen fuel cell systems, primarily used in fuel cell stacks and electrolytic cells for hydrogen production. They are responsible for conducting current, distributing reaction gases, and removing reaction heat. Their surface cleanliness directly affects battery performance, lifespan, and safety. Below are the mainstream cleaning solutions currently available in the industry:
Pre-cleaning → Ultrasonic Alkaline Cleaning → Ultrasonic Water Rinse → Ultrasonic Pure Water Rinse → Hot Air Drying → Vacuum Drying
| Parameter | Specification |
|---|---|
| Ultrasonic Frequency | 28-40 kHz (low frequency for heavy dirt, high frequency for precision) |
| Cleaning Temperature | 40-60°C |
| Cleaning Agent | Alkaline cleaner (pH 10-12) or neutral cleaner |
| Rinse Water Resistivity | >10 MΩ·cm |
| Drying Method | Hot air (80-120°C) + vacuum drying |
Shenzhen Jietai Ultrasonic: Provides fully automatic ultrasonic cleaning lines specifically for fuel cell unipolar plates, supporting automated loading/unloading and robotic transfer
Suzhou Bakr: Offers hydrogen energy-specific ultrasonic cleaning machines with 360° rotating spray and vacuum drying
Mature technology and low cost
Suitable for mass production
Effective removal of cutting fluids, grease, and metal shavings
Using high-energy pulsed laser beams to irradiate the plate surface, contaminants (oxide layers, coatings, organic residues) are instantly vaporized or peeled off through thermal shock and vibration effects.
| Parameter | Specification |
|---|---|
| Laser Type | Fiber pulsed laser (wavelength 1064nm) |
| Power Range | 100W-500W |
| Cleaning Speed | 0.5-2 m²/h |
| Surface Roughness Change | <0.5μm |
| Material Loss | <5μm |
Removal of high-temperature oxide layers after welding
Precision cleaning before coating
Local repair cleaning
Guangdong Chuangxiang Laser: Provides automated laser cleaning machines for hydrogen energy bipolar plates, supporting MES system integration
No chemical agents required, environmentally friendly
No mechanical contact, no substrate damage
Precise positioning, suitable for local cleaning
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Vacuum Spray Cleaning → Vacuum Ultrasonic Cleaning → Vacuum Spray Rinsing → Vacuum Vapor Degreasing → Vacuum Drying
| Parameter | Specification |
|---|---|
| Cleaning Medium | Modified alcohol (hydrocarbon solvent) |
| Working Environment | Full vacuum (<100mbar) |
| Cleaning Temperature | 40-60°C (automatically controlled) |
| Solvent Recovery Rate | >90% |
| Cleanliness Level | Particle residue <0.5mg/m² |
Suzhou Bakr: Provides fully enclosed vacuum modified alcohol cleaning machines specifically for hydrogen energy precision parts, with automatic fractionation and continuous oil discharge
Zero wastewater discharge, meeting environmental requirements
Excellent cleaning effect, suitable for high-cleanliness requirements
Solvent recyclable, low operating cost
Vacuum environment, safe and explosion-proof
Phone：
+8613205411906