Automatic Lithium-Ion Pouch Battery Heat Sealing (Top/Bottom/Side) & Short Circuit Testing Machinee for Pouch Cell

Automatic Lithium-Ion Pouch Battery Heat Sealing (Top/Bottom/Side) & Short Circuit Testing Machine

I. Functional Overview

1. Applicable For top, bottom and side heat sealing of pouch-type liquid lithium-ion batteries, as well as short circuit testing (Three testing modes: positive & negative tab test, positive tab vs. pierced aluminum laminate, negative tab vs. pierced aluminum laminate)

2. Process Flow:

The battery with dual tab outlets is positioned within the upper and lower cavity jigs formed by aluminum laminated film. The operator places the jig into the moving mechanism. A servo motor drives the lead screw to precisely move the jig to the top/bottom sealing station, where the jig descends to perform top and bottom edge sealing.

After sealing, the jig ascends and is moved to the side sealing station, where it descends again to complete side sealing. Then the jig is transferred to the short circuit testing station, where the testing mechanism completes the circuit check.

Finally, the jig is returned to the loading station via servo drive. The operator removes and loads the jig for the next cycle.

3. Equipment Diagram (Image for reference only)

II. Basic Specifications

1. Power Supply: AC220V / 50Hz

Rated Power: 7.0 KW

2. Compressed Air: ≥0.6 MPa, 20 L/min (provided by customer)

3. Machine Dimensions (L×W×H): Approx. 2000 mm × 1200 mm × 1810 mm

4. Machine Weight: Approx. 1400 kg

5. Paint Color: International Warm Gray 1C (or per supplier standard)

III. Technical Parameters

1. Compatible Battery Specifications

Reference Battery Dimensions:

l Top Seal Strip: Length ≥280 mm, Width: 6 mm, Soft Seal

l Side Seal Strip: Length ≥580 mm, Width: 8 mm, Hard Seal

2. Sealing Width: 5–15 mm
3. Sealing Thickness: 0.14–0.3 mm
4. Sealing Head Temperature:
   – Adjustable from ambient to 230°C, with compensation function
   – Control Accuracy: ±2°C  
   – Sealing Time: 0–99.9 seconds, adjustable   
   – Heat Sealing Temperature Range: Ambient ~250°C, adjustable   
   – Temperature Uniformity: ±3°C  
   – Display Accuracy: ±1°C
5. Sealing Head Parallelism: ±0.01 mm
   – Verifiable with triplicate carbonless paper  
   – Uniform sealing expected under 0.6 MPa and 200°C
6. Machine Capacity: 2–3 PPM (Subject to process settings and operator proficiency)
7. Machine Availability Rate: 95%
8. Product Yield Rate: 99%

IV. Process Features

1. Linear servo-driven structure, high positioning accuracy

2. Jig lifting via pneumatic cylinder, fixed lower head, movable upper sealing head

3. Manual jig replacement enables fast switching

4. Manual loading of aluminum laminated film and battery cell

5. Comprehensive safety design:

– Dual-button start

– All moving parts enclosed within protective covers

6. PLC automatic control, HMI touchscreen interface for convenient operation

7. Production statistics, manual/automatic mode switching, fault alarm functionality

8. Safe, stable, reliable, and easy to operate

V. Main Components

(1) Mechanical Components:

1. Battery positioning jig: Special clamping fixture for battery loading/unloading, enabling quick positioning
2. Jig transfer mechanism: Servo motor-driven precision ball screw for jig positioning
3. Top & bottom sealing unit: Dual sealing structure, consisting of cylinders, guide posts, copper heating blocks, insulation plates, sealing heads, and temperature control
4. Side sealing unit: Single side sealing, including cylinders, guide posts, copper heating blocks, insulation plates, sealing head, and temperature control
5. Testing unit: Probe mechanism, puncture unit, cylinders, guide posts, testing platform, and short-circuit tester
6. Frame platform: Aluminum alloy frame, square tube welded structure, thickened chrome-plated steel plate platform, hardened chrome columns, and painted sheet metal enclosures
7. Control system: Comprises PLC, HMI, cylinders, solenoid valves, servo motors, gear reducers, guide rails, and ball screws; featuring production statistics and fault alarm functions

(2) Electrical and Standard Components:

1. Pneumatic Components:

– Taiwan brand cylinders, pressure regulators, pressure gauges, solenoid valves, pneumatic connectors

– PLC, touchscreen (includes timer, counter), safety light curtain, emergency stop, switch buttons

2. Standard Electrical Components: