Automatic Rotary Pouch Cell Electrolyte Filling Machine

I. Equipment Overview

1. Equipment Name: Rotary (indexing) pouch cell electrolyte filling machine.

2. Model: TMAX-ZPD0104F-6

3. Application Scope: Applicable to pouch cell sizes (refer to the commonly used cell specifications listed for this machine).

4. Filling Accuracy: ±0.1 g (single pump-head filling accuracy ±0.02 g).

5. Throughput: 11,000–13,000 cells / 10 h (reference model: cell spec table). Actual throughput depends on cell capacity and process; faster electrolyte imbibition yields higher throughput.

6. Operating Mode: Manual loading into fixtures → automatic filling → degassing/absorption → vacuum pre-sealing → manual unloading (load/unload share the same station).

7. Color Scheme: Frame blue; enclosure off-white/grey baked finish; other parts natural (SUS304, aluminum alloy, and other components).

8. Required Utilities / Power:

l Compressed air: 0.6–0.8 MPa (by buyer).

l Vacuum: −0.08 to −0.095 MPa (by buyer).

l Dry gas (N₂): working pressure 1–50 kPa (by buyer).

l Supply voltage: AC 220 V, 50 Hz.

l Power: 4.5 kW.

9. Overall Size & Weight:

l Main body: L 3800 × W 1600 × H 1900 mm (incl. front/rear pass-through chambers).

l Total weight: 1.2 t.

II. System Configuration & Functions

1) Function & Process Description

The system performs manual load/unload, automatic electrolyte filling, automatic vacuum degassing (absorption), and automatic vacuum pre-sealing. An indexing turntable advances fixtures through each station for continuous cyclic operation.

Operator places cells into the fixture and presses the foot pedal; the turntable indexes to the filling station. After filling, the fixture indexes to the vacuum degassing box (time, vacuum level, and number of cycles adjustable). Upon completion, the fixture indexes to the vacuum pre-sealing station. After pre-seal, the fixture returns to the start position where the operator removes the cell and loads the next cell to continue the cycle.

2) Process Flow

3) Motion Flow

4) Common Cell Specifications Used with This Machine

III. Glovebox & Station Functions

1) Glovebox Configuration

l Envelope & Pass-throughs: Outer size L 3.8 m × W 1.6 m × H 1.9 m; clear internal space L 1.6 m × W 1.6 m × H 1.2 m. Front pass-through 900 × 400 × 400 mm; rear pass-through 550 × 400 × 400 mm. Inner door: cylinder with foot-pedal control; outer door: manual.

l Conveyor in Front Pass-through: To ensure continuous feeding, a belt conveyor is installed and foot-pedal controlled.

l Primary Materials: SUS304 sheet and box-section; vacuum chambers in anodized aluminum; load-bearing frame in 50×50×3.0 mm steel box (painted); upper sheet-metal in 1.5 mm stainless, outer surface baked finish.

l Windows & Glove Ports: 6 mm imported clear PC window with stainless outer frame, screw-fastened; glove rings in corrosion-resistant material with sealing gasket to the PC panel.

l Long-reach Gloves, Leveling Feet & Casters: One pair of acid/alkali-resistant long-reach gloves (2 pcs). Four leveling feet and four casters; feet to be fixed after installation.

l Fabrication & Joins: Bottom plate fully welded for airtightness; joints use sealing strip + screws/nuts; quick-access service doors provided.

2) Station Functions & Principles

IV. Other Key Functions

1. Electrolyte storage & supply: Two electrolyte tanks for automatic supply, storage, filling, and constant-pressure degassing, with switchover; low-level alarm when a tank is empty.

2. Anti-sticking (anti-seizure) system: When idle for long periods, the filling pump auto-indexes at set intervals; no dripping at the needle. Prevents crystallization and pump seizure.

3. Power-loss holding: In case of power failure, the degassing box remains pressed down (prevents a pressure spike from cylinder retraction). After power is restored, the system detects the prior step and resumes to completion.

4. Auto sealing logic: The sealing station only seals cells that have completed filling; unfilled cells are not sealed.

5. Gas-bag NG judgment: Before filling, system determines gas-bag opening OK/NG; the needle descends and fills only when OK.

6. Glovebox lighting: DC 24 V LED strip lights, corrosion-resistant, HMI-controlled.

V. Main Parts List

Some components are not listed exhaustively; final build prevails.

VI. Filling Pump Parameters

l Model: DDB-1.0 mL-8

l Max single-dose per revolution: ≈1 g / rev (≈1 g/s at 1 rev/s).

l Accuracy: < ±0.005 g

Performance Features

l High accuracy: ±0.005 g or better.

l Wide viscosity range via rotary ceramic valve core: from low (<10,000 cps) through medium (10,000–100,000 cps) to high (>100,000–500,000 cps).

l Anti-contamination: rotary valve-core design without dynamic O-rings; easy to clean; suitable for aseptic filling (food/pharma).

l Corrosion-resistant, high-wear ceramic pump head; long life; key parts are imported; robust and durable.

l Automatic counting included.

l Avoids bubble issues common to check-valve pumps with dynamic seals.

l No dynamic seals to replace—simpler than plunger pumps and easier to maintain.

l Control: PLC automatic control or external foot-pedal manual.