1.1 Applicable for the final edge vacuum heat sealing of soft-packaged lithium batteries after formation. 2.1 Operating procedure: Manually place the cell into the cavity fixture on the turntable, then press the dual-start button. The turntable will rotate 180°, positioning the cell in the working area. The machine will automatically perform operations such as vacuuming, sealing, and degassing. Once sealing is complete, the turntable automatically rotates out, allowing the operator to manually remove the cell.

I.   Equipment Overview

1. Function Overview ：

1.1 Suitable for the final edge vacuum heat sealing of soft-pack lithium batteries after formation.

2.1 Work process: Carefully place the cell into the cavity fixture on the rotary table, then press the dual-start button. The rotary table will rotate 180°, turning the cell inside the cavity into the working position, and automatically proceed with processes such as vacuuming, sealing, and degassing. Once sealing is complete, the rotary table will automatically rotate out, allowing you to manually remove the cell. 。

2. Equipment Process Flow

3. Structural Description

1) This device features a rack constructed with aluminum alloy square tubing and sheet metal with baked finish.

2) For horizontal sealing method status. Above The lower head is heated simultaneously, and the head is processed in combination with the heating element. The lower head features a reinforced structure, while the upper head boasts an adaptive function. A liquid collection trough is installed on the cavity baseplate, and the upper cavity is sealed against the upper plate using a square-shaped sealing strip. Pipelines such as cylinders, vacuum valves, heaters, and thermocouples—and their connections to the external loop—are designed with a plug-in structure and thoroughly sealed, enabling fully automated control throughout the encapsulation process.

3) Each device is equipped with 11 spikes. Knife 。

4) Electrical Control Section: The centralized control box is positioned above the upper frame, flush with the overall frame.

II. Technical Specifications

1. Applicable specifications: (Length x Width x Thickness) 2 50x15 Within 0.12 mm (including air bags);

2. This machine employs a rotary turntable feeding mechanism. ；

3. Machine speed: ~360 cycles/hour (depending on process parameters) ；

4. Machine encapsulation alignment accuracy: ±0.1 mm; cap parallelism is ±0.015 mm;

5. Vacuum level: ≤ -98 kPa;

6. Heat-sealing time and vacuum time are set in the touchscreen; sealing pressure is adjusted via the operation panel; temperature accuracy is maintained within a range of +/-3°C. The process is controlled by a PLC program, which automatically stops and triggers an alarm if the temperature exceeds or falls below the preset limits.

7. Maximum size of sealable batteries: length up to 2 5 0 mm, package width 4–8 mm (manufactured according to customer requirements);

8. Head cover operating temperature range: Room temperature to 220°C;

9. The upper head cylinder has a diameter of 63 mm, while the bayonet cylinder measures 32 mm in diameter.

10. Control System: Employs PLC-based centralized control. Includes electrical accessories such as circuit breakers, contactors, temperature controllers, vacuum gauges, and more.

11. Power configuration: AC 220V / 50Hz, Power: 6.5 kW (user-provided)

12. Ground terminal;

13. Compressed air: 0.4–0.6 MPa (to be provided by the buyer)

14. Vacuum Source: ≤ -95 kPa (to be provided by the buyer)

15. Equipment weight: Approximately 200 kg

16. Appearance color: International Warm Gray 1C

III. Manufacturing Performance

1. The turntable uses a Taiwan-imported indexer, offering high precision and stable positioning.

2. The vacuum extraction pipe is arranged in the lower vacuum chamber, while the vacuum release pipe is installed in the upper vacuum chamber, ensuring that the airflow direction flows toward the electrolyte tank, thereby minimizing electrolyte contamination.

3. The upper and lower end caps feature a side-lock screw structure, making it convenient to remove and maintain the caps.

4. The bayonet is installed at the upper wall cover plate, which can be raised even when the cover plate is not in operation, facilitating the removal and maintenance of components such as the bayonet and the upper head assembly.

5. The liquid collection tank is installed inside the lower vacuum chamber, which is divided into two sections: the front section houses a head cover, insulation blocks, and other components, while the smaller rear chamber contains the electrolyte tank, preventing electrolyte from splashing onto other areas.

6. The encapsulation temperature is set via the temperature controller in the control panel;

7. The upper and lower sets of heat-sealing heads are made from copper plates;

8. The thermocouple features Taiwan-imported Teflon thermocouple wires, offering high-temperature resistance and corrosion protection.

9. Bayonet position relative to the head can be adjusted;

10. The upper vacuum chamber pressure plate uses a spring-loaded clamp, with a magnetic clamp underneath that attaches to the spring-loaded clamp via positioning pins, making it easy to remove for applying Teflon tape.

4. Safety Performance:

1) This machine features a closed enclosure made of aluminum alloy and acrylic glass. The enclosure door is equipped with a control switch that automatically stops the machine when the door is opened, preventing potential harm to personnel.

2) The console features dual-button operation to prevent accidental misuse.

3) Utilization Rate: ≥9 8%。

4) Pass rate: ≥99%.          

V. System Protection Feature

The entire touch display incorporates protective measures to address improper user operations. For instance, if an operator inadvertently enters the manual operation screen while the machine is running automatically, the touch display will immediately halt the machine’s automated process—thereby ensuring the equipment remains undamaged.

The entire machine operates safely and reliably. The machine is equipped with a leakage circuit breaker, which, combined with proper grounding measures, ensures that people are protected from electric shock. Additionally, the machine features an over-temperature alarm system controlled by a temperature controller, safeguarding both the machine and its battery from damage.

Whether automated or manual, the various application units—each with a logical sequence of preceding and following actions—feature reliable interlocking mechanisms, preventing unintended misoperations that could lead to hazards.

6. Major Components

• Cylinder/Solenoid Valve/Manifold Plate: Festo
• Linear bearing ： Luoerte
• PLC: Panasonic
• Touch screen ： Weikong
• Thermostat: Omron

7. Requirements for Supporting Facilities in Equipment Installation

1. Configure the power supply: 1. AC 220V, 50Hz, Power 2.5kW

2. Compressed air: 0.5–0.7 MPa

3. Vacuum source: -95 kPa

4. Equipment installation environment: Standard room

5. Equipment weight: Approximately 800 kg

6. Total air consumption of the unit: 70 liters/min