Liquid Injection Machine
PRODUCT PARAMETERS
Description
Liquid Injection Machine – Vacuum Electrolyte Filling System for Polymer Batteries
We designed this Liquid Injection Machine specifically for precise electrolyte filling of polymer lithium batteries. Its advanced vacuum injection nozzle uses a pneumatic shut-off valve with a stainless steel poppet and Teflon conical seat, ensuring bubble-free dosing and clean cut-off. Therefore, it delivers consistent, high-accuracy injections for R&D and production environments.
System Configuration
| Component | Description |
|---|---|
| Frame | Stainless steel and oxidized aluminum alloy construction |
| Vacuum Box Head | Aluminum alloy container with pneumatic/manual lifting, vacuum sealed |
| Injection Nozzle | Pneumatic shut-off type, mounted on vacuum box, vertically movable with airtight seal |
| Precision Metering Pump | Model E4-3-R34B, plunger pump with stepping motor and ceramic rotary valve; single stroke up to 174mL, multi-stroke programmable |
| Pneumatic Control | Integrated valve assembly for automated operation |
| Controller | PLC with color touch screen for parameter setting |
| Piping | All liquid lines use PFA plastic; 20L stainless steel storage tank included |
Key Features
Advanced Nozzle Design
The injection nozzle incorporates a stainless steel poppet and Teflon conical valve seat. As a result, it provides reliable closure and precise liquid control without dripping or cavitation.
Bubble-Free Vacuum Injection
A check valve at the nozzle inlet maintains vacuum integrity during the process. Consequently, it prevents bubble formation and ensures complete electrolyte filling.
High Precision Metering
The stepping motor-driven plunger pump with ceramic rotary valve achieves ±1% accuracy. Moreover, you can program multiple strokes for larger volumes up to 295–375mL (350–450g).
Flexible Battery Compatibility
The machine accommodates polymer batteries up to 450×450mm. Thus, it suits both small R&D cells and larger production formats.
User-Friendly Control
You set all injection parameters—volume, program, nozzle operation—via the color touch screen PLC interface. Additionally, pneumatic controls ensure smooth automated cycles.
Clean Fluid Path
All liquid-contacting components use PFA plastic and stainless steel, so they resist corrosion and maintain electrolyte purity.
Working Principle
- Positioning: You place the battery under the vacuum box head.
- Sealing: The head closes, forming a vacuum-tight chamber.
- Evacuation: The system draws vacuum to remove air from the cell.
- Injection: The metering pump delivers the programmed electrolyte volume through the nozzle.
- Shut-off: The poppet valve closes cleanly after each stroke.
- Repeat: If multi-stroke is set, the cycle repeats until the total volume is injected.
- Completion: The head opens, and you remove the filled battery.
Technical Specifications
| Parameter | Specification |
|---|---|
| Single Stroke Injection Volume | 0 – 174 mL |
| Injection Accuracy | ±1% |
| Max Achievable Volume (Multi-stroke) | 295 – 375 mL (350 – 450 g) |
| Battery Size Compatibility | Max 450 × 450 mm (polymer) |
| Production Speed | ~3 batteries per minute (est.) |
| Power Supply | 220V AC |
| Air Supply | 75 PSI |
| Vacuum Source | Customer provided |
| Pressure Gas Supply | Customer provided |
| Metering Pump Model | E4-3-R34B (plunger, ceramic rotary valve) |
| Liquid Storage Tank | 20L stainless steel |
| Liquid Piping Material | PFA plastic |
| Control System | PLC with color touch screen |
| Frame Material | Stainless steel / oxidized aluminum alloy |
About Us
FAQs
Please send us your purchase order by email or call us sales , then we can make the proforma invoice under your request .We need to know the following information for your order before sending your PI
1) Product information–quantity ,specification(size,technological if needed and packing requirements ect.)
2) Delivery time required.
3) Shipping information–Company name, detail address, phone number, destination sea port .
4) Forwarder’s contact details if there’s any in China
It takes 1-5 days for sample order or part of inventoryequipment (depending on the requirements of the order)10-30 days for mass production orders(depending on order requirements, etc.)
Please tell us :
What's your application and your special requestof the products ?
Better to let us know what's your expect performance ?
We accept EXW, FOB, CIF,DAP etc. You can choose the one whichis the most convenient or cost effective for you.
There is a English manual for each equipment that will show youhow to use the machine If there is still any questions,Please feel free to contact us by online service,such as e-mail/skype/phone/whatsapp/wechat at any time.
- The guarantee period : One year
LiBatteryEquip is a professional supplier specializing in complete Battery Laboratory Equipment,Lithium Battery Production Line, and Battery Testing Equipment. With over 20 years of experience in lithium battery material production, and battery equipment manufacturing, we provide customized lithium battery laboratory and pilot production line solutions for various research institutions and enterprises to meet their diverse needs. Our technical and management team possesses more than 20 years of expertise in the battery-related industry, consistently committed to delivering superior products and comprehensive services to our clients.
