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Prismatic Battery Automatic Electrolyte Filling Machine
Our prismatic battery automatic electrolyte filling machine is designed for high‑volume vacuum injection into square aluminum‑case power batteries. This square aluminum cell liquid injection equipment automates conveyor feeding, barcode scanning, Hi‑pot testing, pre‑weighing, vacuum filling, high/low pressure cyclic soaking, post‑weighing, DMC cleaning, rubber pin (forming pin) insertion, and inspection. As a prismatic cell vacuum filling system, it achieves ≥20PPM, 99.5% yield, ±1.1% filling accuracy, and ±0.01g weighing precision – with a heavy‑duty rotary table, automatic cell clamping, and wireless maintenance screen.
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What Is a Prismatic Battery Automatic Electrolyte Filling Machine?
A prismatic battery automatic electrolyte filling machine is a core piece of equipment for injecting precise amounts of electrolyte into prismatic cells after assembly. Proper filling ensures full electrode wetting and optimal battery performance. Our system is specifically built for square aluminum‑case power batteries used in electric vehicles and energy storage systems, with a robust rotary table design that eliminates deformation issues common in cam‑indexer systems.
Square Aluminum Cell Liquid Injection Equipment – Key Technical Features
This square aluminum cell liquid injection equipment incorporates advanced engineering for reliability, precision, and cleanliness:
Vacuum filling with high/low pressure breathing soaking – Accelerates electrolyte absorption, reduces total soaking time.
Heavy‑duty rotary table – Servo‑controlled rotation speed, supported by large‑diameter rotary bearings instead of traditional cam indexers, preventing table deformation and ensuring chamber pressure integrity over long‑term use.
Automatic cell clamping – Prevents cell deformation during the filling and soaking process.
Wireless remote secondary screen – Easy maintenance and operation without accessing the main HMI.
Transparent glass filling cups – Allows operators to visually monitor the liquid level inside each cup during production.
Pre‑fill cleaning system – Cleans filling cups and nozzles before each cycle, improving filling accuracy and preventing secondary contamination.
Residual liquid collection – Nozzle drip collection after filling avoids electrolyte contamination on cell surfaces.
Tapered insert nozzle – Eliminates liquid residue at the filling port step/right‑angle junction, ensuring a clean cell surface.
Prismatic Cell Vacuum Filling System – Technical Parameters
As a high‑performance prismatic cell vacuum filling system, our machine meets the following specifications:
| Parameter | Value |
|---|---|
| Dimensions (L×W×H) | 7200×6200×2800 mm |
| Weight | ≈15 T |
| Power | 15 kW |
| Power supply | AC380V/50Hz |
| Air source | ≥0.7MPa, 30L/s (50% utilization) |
| Vacuum source | ≤-95kPa, 60L/s |
| Nitrogen | ≥0.6MPa, 60L/s |
| Cell size range | Length 100–200mm × Width 100–175mm × Thickness 15–30mm |
| Production capacity | ≥20 PPM (total soaking time ≤480 seconds) |
| Yield | ≥99.5% |
| OEE (availability) | 97% |
| Filling volume range | 0–770 g |
| Filling pump accuracy | ±0.2% |
| Filling accuracy | ±1.1% |
| Weighing accuracy | ±0.01g |
Custom configurations available upon request.
Complete Process Flow – From Feeding to Outfeed
The fully automatic process sequence includes:
Conveyor feeding – Cells enter the system.
Barcode scanning – Full traceability.
Short circuit (Hi‑pot) test – Rejects defective cells early.
Pre‑weighing – Dry weight recorded.
Reject collection – Bad cells removed.
Automatic loading into filling fixture – Cells positioned on rotary table.
Leak test before filling – Ensures cell integrity.
Automatic vacuum filling – Electrolyte injected under controlled vacuum.
High/low pressure cyclic soaking – Accelerates electrolyte absorption (total soaking time ≤480s).
Residual liquid collection from filling cup – Prevents drips.
Filling cup & nozzle cleaning – Prepares for next cycle.
Unloading from fixture – Cells released.
Post‑weighing – Verifies electrolyte amount.
Automatic DMC cleaning of filling port – Removes residue.
Automatic rotary insertion of forming pin – Seals the port temporarily for formation.
Forming pin inspection – Confirms correct insertion.
Conveyor outfeed – Transfers cells to next process (formation).
Why Choose This System for EV Prismatic Battery Production?
High throughput – ≥20PPM with ≤480s total soaking time, 99.5% yield, 97% OEE.
Superior reliability – Heavy‑duty rotary bearing table eliminates deformation, maintains chamber seal integrity.
Precision filling – ±1.1% filling accuracy, ±0.2% pump accuracy, ±0.01g weighing.
Clean & safe – Pre‑fill cleaning, residual liquid collection, taper nozzles prevent contamination.
User‑friendly – Wireless remote screen, transparent filling cups for easy monitoring.
Flexible – Cell size range covers most prismatic EV battery formats.
Applications
Electric vehicle (EV) prismatic cells – High‑volume production lines.
Energy storage systems (ESS) – Large‑format square aluminum batteries.
High‑power battery manufacturing – For industrial and commercial applications.
⚡ High speed & yield – 20PPM, 99.5% yield, ≤480s total soaking time.
🔧 Robust rotary table – Servo‑controlled, bearing‑supported – no deformation, long‑term precision.
🧼 Clean injection process – Nozzle cleaning, residue collection, taper nozzles, transparent cups.