Cylindrical Battery Liquid Injection Machine
PRODUCT PARAMETERS
Description
Cylindrical Battery Liquid Injection Machine – Dual-Station Vacuum Electrolyte Filler for 21700/26650/32650
This Cylindrical Battery Liquid Injection Machine is a precision automated system designed for vacuum-assisted electrolyte filling of cylindrical lithium-ion batteries. It features a dual-station configuration for efficient processing and is specifically engineered for use within glove boxes, maintaining inert atmospheres during the critical electrolyte injection step.
System Overview:
The machine consists of two main sections:
- Internal Glove Box Components: Stainless steel/aluminum alloy frame, dual liquid injection heads with SS316 containers, automatic lifting device, precision metering pumps, and PFA plastic liquid pipes.
- External Control Elements: PLC controller with color touch screen, pneumatic control valve assembly (SMC modules), and all control electronics. These remain outside the glove box and connect via air pipes and cables through glove box ports.
Key Features:
- Dual-Station Design: Two independent working stations for simultaneous processing, increasing throughput.
- Automatic Lifting Device: Pneumatic-controlled spring lifting mechanism positions batteries precisely under injection heads.
- Precision Metering Pumps: Model E2a-d20i plunger pumps driven by stepping motors with precision ceramic rotary valves. Injection volume up to 20ml (23.5g) with ±1% accuracy.
- Vacuum Injection Heads: SS316 containers with double pneumatic lift/double lift shut-off valve structure. Poppet valve design enables multiple vacuum/venting cycles for complete electrolyte absorption.
- Inert Atmosphere Compatible: Designed for installation inside customer-provided glove boxes, with all control elements externally located.
- PLC Touch Screen Control: User-friendly interface for programming injection parameters and sequences.
- Clean Fluid Path: All liquid-contacting pipes made of PFA plastic, ensuring chemical compatibility and purity.
Working Principle (Two-Step Vacuum Injection):
- The battery seals against the injection head.
- System evacuates the injection head and battery interior.
- Poppet valve closes, isolating the battery while maintaining vacuum inside.
- Metering pump injects precise electrolyte volume into the injection head.
- Poppet valve opens, and vacuum draws electrolyte into the battery.
- Process can repeat (multiple vacuum/vent cycles) to ensure complete wetting.
Working Steps:
- Manually place two batteries on positioning trays.
- Press foot switch to start automatic cycle:
- Batteries descend to injection head position
- Ascend to seal with injection head
- Automatic liquid injection process
- Batteries descend after completion
- Manually remove filled batteries.
- Place two new batteries and repeat.
Applications:
- Electrolyte filling for 21700, 26650, 32650 cylindrical cells
- Lithium-ion battery R&D and pilot production
- Small-batch manufacturing
- Glove box-based battery assembly
Technical Parameters
| Parameter | Specification |
|---|---|
| Liquid Injection Volume | 0 – 20 ml |
| Injection Accuracy | ±1% |
| Battery Specifications | 21700 / 26650 / 32650 |
| Production Speed | 2 PPM (per normal injection procedure) |
| Power Supply | 220V AC |
| Air Supply | 75 PSI (customer provided) |
| Vacuum Source | Customer provided |
| Pressurizing Gas Supply | Customer provided (if required) |
| Metering Pump Model | E2a-d20i plunger pump with ceramic rotary valve |
| Liquid Contact Materials | SS316, PFA plastic, ceramic |
| Control System | PLC with color touch screen |
| Pneumatic Components | SMC modules |
| Frame Material | Stainless steel and aluminum alloy |
| Number of Stations | 2 |
| Glove Box Compatibility | Yes (main body inside, controls outside) |
Required Connections Through Glove Box:
- 1 general air inlet pipe
- 1 general exhaust pipe
- 1 vacuum pipe
- 1 pressurizing air pipe (if required)
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.
