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Multi-functional soft package battery side and top sealing machine for medium and small polymer battery production lines
This integrated pouch battery processing machine combines top sealing, side sealing, corner sealing, HIPOT insulation testing, edge trimming, NG sorting, and automatic conveyor unloading into a single automated system. Operators load batteries at the loading station (with automatic clamp opening/closing), and mechanical hands transfer cells through each processing station in sequence. The machine handles pouch batteries with top/side seal dimensions from 30mm to 180mm (including gas bag) and thickness 3-10mm. With high-precision temperature control (±2°C), parallel sealing heads (±0.01mm), and 8PPM output, this all-in-one solution streamlines pouch cell production while saving floor space and reducing handling.
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Package battery side and top sealing machine Product Overview
This integrated machine is a comprehensive processing solution for soft pack (pouch) lithium batteries, performing multiple critical operations in a single production line:
| Operation | Description |
| Top Sealing | Heat seals the top edge of the pouch (where tabs exit) |
| Side Sealing | Heat seals the side edge of the pouch |
| Corner Sealing | Seals the bottom corners of the gas bag side to prevent electrolyte leakage |
| HIPOT Test | Insulation resistance test to detect shorts and insulation defects |
| Edge Trimming | Precisely cuts excess side material with ±0.2mm accuracy |
| NG Sorting | Automatically rejects non-conforming cells |
| Auto Unloading | Mechanical hand transfers finished cells to customer-supplied conveyor |
The machine operates with a semi-automatic workflow: operators load batteries at the loading station (with automatic clamp opening/closing), and a mechanical hand transfers fixtures and batteries sequentially through each processing station. The mechanical hand also unloads finished batteries to a downstream conveyor (provided by the customer; the fixture cycles within the equipment). This integrated design eliminates multiple separate machines, reduces handling, and improves production efficiency.
Process
Manual Loading: Operator places batteries into the loading station fixtures; clamps automatically open/close for secure positioning.
Mechanical Hand Transfer: A robotic handling system transfers the battery and fixture to the next station.
Top Sealing Station: Upper/lower heating sealing heads press the top edge of the aluminum laminated film at controlled temperature (room temp to 230°C, ±2°C accuracy) and time (0-99.9s adjustable).
Side Sealing Station: Side edge of the pouch is heat sealed with the same precision temperature and pressure control.
Corner Sealing Station: Only the bottom corners of the gas bag side are sealed to ensure complete encapsulation. Note: Corner sealing is applicable only for cells with width ≥35mm and height ≥45mm; smaller cells cannot be corner-sealed.
HIPOT Insulation Test Station: Performs high-potential insulation testing to detect any internal shorts or insulation breakdowns.
Edge Trimming Station: Excess side edge material is precisely cut off with ±0.2mm cutting accuracy.
NG Sorting Station: Non-conforming cells (based on sealing quality or HIPOT test results) are automatically rejected and separated.
Automatic Unloading: Mechanical hand transfers finished acceptable cells to the customer-supplied conveyor for downstream processes. (The fixture returns to the loading station for the next cycle.)
Pouch Battery Sealing Machine Key Features & Advantages
| Feature | Benefit |
| 6-in-1 Integrated Design | Combines top seal, side seal, corner seal, HIPOT test, trimming, sorting, and auto unloading into one machine – saves floor space and handling |
| Mechanical Hand Transfer System | Precise and reliable battery transport between stations; reduces manual handling and operator fatigue |
| Automatic Clamp Opening/Closing | Simplified loading operation; ensures consistent battery positioning |
| Double-Sided Heating Sealing Heads | Uniform heat distribution from both sides for superior seal quality |
| High-Precision Temperature Control | ±2°C accuracy ensures consistent melting and bonding of aluminum laminated film |
| High-Precision Parallelism | ±0.01mm sealing head parallelism ensures even pressure across the seal edge |
| Corner Sealing Function | Seals gas bag corners to prevent electrolyte leakage – critical for battery safety |
| Built-in HIPOT Test | Integrated insulation testing eliminates separate test equipment; detects defects early |
| Precision Edge Trimming | ±0.2mm cutting accuracy for clean, consistent edge finish |
| Automatic NG Sorting | Rejects defective cells automatically, ensuring only high-quality cells proceed |
| Conveyor Integration | Easy connection to customer’s downstream conveyor (unloading height to be specified) |
| Flexible Sealing Width | 1.5-5mm sealing width adjustable based on customer requirements |
| No Vacuum Required | Simple installation and operation (atmospheric sealing process) |
| Compact Footprint | Only 1100×1000mm floor space for a multi-operation line |
Top and Side Sealing Machine Technical Specifications
| Parameter | Specification |
| Applicable Battery Size | Top seal 30-180mm (incl. gas bag), Side seal 30-180mm (incl. gas bag), Thickness 3-10mm |
| Cell Size Requirement (Corner Sealing) | Width ≥35mm, Height ≥45mm (smaller cells cannot be corner-sealed) |
| Sealing Head Length | 200mm |
| Sealing Width | 1.5 – 5mm (customer-specified upon order) |
| Sealed Edge Thickness | 0.14 – 0.3mm |
| Sealing Temperature | Room temp – 230°C adjustable, control accuracy ±2°C |
| Top Sealing Cylinder Bore | 63mm |
| Side Sealing Cylinder Bore | 63mm |
| Corner Sealing Cylinder Bore | 32mm |
| Sealing Head Parallelism | ±0.01mm |
| Sealing Time | 0 – 99.9 seconds adjustable |
| Trimming Accuracy | ±0.2mm |
| Mechanical Speed | 8PPM (varies by operator skill and sealing time) |
| Air Source | ≥0.5MPa, 80L/min |
| Power Supply | AC220V, 3.5KW |
| Vacuum Source | Not required (atmospheric sealing) |
| Machine Dimensions | 1100mm(L) × 1000mm(W) × 1700mm(H) |
| Machine Weight | Approx. 1.2T |