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Prismatic Aluminum Shell Lithium Battery Isostatic Filling Machine
This isostatic filling machine is specially designed for electrolyte filling of prismatic aluminum-shell lithium batteries, compatible with both first isostatic filling and second isostatic filling. Featuring automatic vacuum evacuation, precision electrolyte injection, and high/low-pressure cyclic standing, the system delivers exceptional filling accuracy with ±1g precision (for filling volume ≤100g). The integrated 1-out-of-4 fixture design supports battery dimensions of W 80–220mm × H 60–220mm × T 20–75mm, making it ideal for EV battery and energy storage battery production lines. The filling pump delivers ≥10g/s injection speed with a maximum single fill of 1200g.
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Prismatic aluminum shell lithium battery filling machine| Product Overview
This device is compatible with both primary and secondary isobaric injection liquids. The device uses an isobaric injection method inside and outside the battery, through multiple cycles of vacuum/high-pressure static settling, which is particularly suitable for battery injection with difficult infiltration like lithium iron phosphate, ensuring the electrolyte quickly flows down, the electrodes are fully soaked, and there is no backflow of the electrolyte after injection, with good consistency of the battery.
Electrolyte Dosing Machine | Key Features
Isostatic Filling Technology
Adopting an equal-pressure injection method with liquid inside and outside the battery, vacuum/high-pressure multiple cycles of static storage effectively prevent shell deformation during the battery injection process, ensuring that the electrolyte is fully soaked. The equipment features a large-capacity design with a maximum of 1200g of liquid per filling cup, and the injection pump has an injection speed of ≥10g/s.
High-Precision Filling
Injection accuracy: ±1g when the injection volume is ≤100g; ±2g when 100 < injection volume < 200; ±1% when the injection volume is ≥100g. The equipment adopts a precise injection pump and a two-way valve switching control system to achieve accurate quantitative injection.
Wide Cell Compatibility
Compatible battery size: width 80-220mm, height 60-220mm, thickness 20-75mm. Battery terminal height ≤30mm, filling hole size 5mm±0.05. One cell corresponds to one fixture, easy to change models.
Precise Vacuum & Pressure Control
1.Independent interface (injection, static, standby)
2.Each function operates independently by manual operation.
3.Reserved MES system interface
4.Production parameters and operating data are uploaded to the server at regular intervals.
5.USB port data export
6.Each injection head injection volume statistics and traceability
Safety & Maintenance Design
1.Battery clamp anti-pressure injury design
2. Cycle management of consumables such as injection nozzles, sealing rings, filter cores, etc., to achieve equipment alarm and shutdown during maintenance and maintenance cycles.
3.All contact parts with the battery cell are made of non-metallic materials.
4.Equipment noise ≤75db (measured at a distance of 1000mm)
Battery Filling Machine |Technical Specifications
| Parameter | Specification |
| Equipment Size | ≤1500(L)×1700(W)×2200(H) mm |
| Filling System | 1100×650×1800 mm |
| Capacity | As per actual production. |
| Loading/Unloading | Manual loading/unloading |
| Filling Method | Isostatic Filling |
| Max Filling Volume | 1200g per dose |
| Filling Speed | ≥10g/S |
| Filling Accuracy | ≤100g: ±1g；100-200g: ±2g；≥100g: ±1% |
| Cell Width | 80–220mm |
| Cell Height | 60–220mm |
| Cell Thickness | 20–75mm |
| Terminal Height | ≤30mm |
| Filling Hole | 5mm±0.05 |
| Vacuum Range | 0～-99Kpa |
| Pressure Range | 0～0.4Mpa |
| Vacuum Leak Rate | ＜10Pa/S |
| System Leak Rate | ≤5Kpa/min |
| First-Pass Yield | ≥99.6% |
| Utilization Rate | ≥95% |
| Failure Rate | ≤2% |
| Noise | ≤75 dB (at 1000 mm) |
| Air Source | 0.6Mpa |
| Vacuum Source | 0.98Mpa |
| Nitrogen | 0.5Mpa |