Battery Electrode Roll Vacuum Drying Oven

Battery Electrode Roll Vacuum Drying Oven - TOB-PT02-B1

Product Overview and Ideal Applications

The TOB-PT02-B1 is a vacuum drying oven specially designed for battery electrode rolls. It is equipped with a specially designed electrode roll trolley and a lift truck (400 kg) for electrode roll loading, so rolls are transferred into and out of the oven on the trolley rather than being handled piece by piece. The oven is built as a dual-chamber machine: the inner chamber dimensions are 600 (H) x 500 (W) x 600 (D) mm, provided x 2 - and the two chambers are separately controlled, so each chamber can run its own baking program.

The drying of electrode rolls is a moisture-removal step in battery cell production. Coated and calendered electrode rolls carry solvent residues and adsorbed moisture; before the rolls move on to slitting or further processing, the residual moisture must be reduced to the level the process requires - and because the electrode coating is sensitive to temperature, the drying must be carried out at a controlled, moderate temperature (room temperature to 120 °C on this oven) and in a controlled atmosphere. The TOB-PT02-B1 provides that environment: it heats by external-circulation hot air, draws vacuum, and fills dry gas in an automatic cycle.

The oven's cycle is designed for repeated production use. Each machine can work in a continuous cycle: the door is opened, the electrode roll is placed into the oven, and the heating time, vacuum time, and nitrogen time are set; the system then automatically completes the heating and the timed ventilation according to the set time parameters, completing the baking process. When the baking time is reached, the oven returns to vacuum pressure holding, and the machine shuts down automatically.

Ideal for:

• Battery cell manufacturers drying coated electrode rolls before slitting or assembly, using the electrode roll trolley and lift truck for loading.
• Battery manufacturing lines that require a defined vacuum drying step with automatic heating, vacuum, and nitrogen circulation under PLC control.
• Production operations that need two independently controlled drying chambers, so two batches can run in parallel with separate programs.
• Quality-conscious processes that require a digital record of pressure retention (24H pressure retention ≥95%) and on-screen fault reporting and alarm description.

Need to confirm whether the dual-chamber configuration and the electrode roll trolley match your roll dimensions and production rhythm? Contact our battery equipment engineers with your electrode roll size and drying process requirements.

Complete Technical Specifications

1. Technical Parameters

2. Electrical Configuration

Remark: For delivery reasons, the supplier has the right to select components of other brands of equivalent grade according to market supply, without prior notice to the customer.

3. Installation Conditions

3.1 General installation requirements

The front of the oven shall not be less than 1500 mm from the wall, and the left, right, and rear sides shall not be less than 500 mm. The user must provide a separate distribution switch and is responsible for the connection of the power supply outside the equipment.

3.2 Conditions of the installation area (provided by Party A)

3.3 Electrical energy consumption

• Maximum: ≤18 kW/hour
• Uniform: ≤3 kW/hour

3.4 Environmental requirements

• Temperature -5 to 35 °C, humidity ≤40%
• No flammable or explosive gas, liquid, or solid around the equipment
• Do not bake flammable items, combustible gases, or explosive substances in the chamber.

4. Spare Parts List (per machine)

Basic Structure

The TOB-PT02-B1 is composed of five parts:

1. Frame part
2. Inner chamber part
3. Vacuum pumping and nitrogen filling part
4. Electrical control part
5. External circulation part

Working Principle

Each machine can work in a continuous cycle. The basic process is: open the door and put the cell or electrode roll into the oven, then set the heating time, the vacuum time, and the nitrogen time. The system will automatically complete the heating and the timed ventilation according to the set time parameters, completing the baking process.

Configuration

• Chamber: 201# 3.0 stainless steel; the reinforcing ribs are made of iron square tube material.
• Frame: Made of 1.5 mm and 2.0 mm high-quality cold-rolled plate, composed of two layers of insulation; the insulation is made of three materials in layers - aluminum silicate, aluminum foil cotton, and soundproof cotton.
• Hot air system: Each layer is composed of a fan, a heating box, an air duct, and an air pipe, so as to achieve better temperature consistency.
• Control system: Composed of PLC, touch screen, pressure sensor, high vacuum baffle valve, solid state relay, temperature controller, and solenoid valve group.
• Hardware: Includes the door, rear cover, vacuum pipes, and other stamped parts.

Key Machine Features

1. Single door opening: Single-door design; elastic double-layer glass door with three-layer pressure detection and overpressure protection.
2. Inner chamber sealing ring: Molded and cast silicone rubber O-ring, high temperature resistant and corrosion resistant.
3. Principle: Surrounding-type hot air external circulation. Double-layer heat insulation; the external temperature is not higher than room temperature +20 °C.
4. Heating structure: O-type external circulation air, air out on the left and air suction on the right, achieving temperature consistency.
5. High vacuum pneumatic baffle valve: Isolated, two-layer separate control.
6. Touch screen display: Automatic circulation and automatic control; after the final step, the machine returns to vacuum pressure holding; digital display safety temperature.
7. Multiple position-type over-temperature protection temperature control devices: Effectively prevent temperature control safety problems such as loss of temperature control, and improve the precision of over-temperature protection.
8. Centralized touch screen operation: The control screen uses centralized touch screen operation for convenient operation and reliable control. The program controller uses PLC control, for stable and reliable operation.
9. Two oven layers independently controlled: The total baking time, cycle time, vacuum time, and drying time can be set separately. After the parameters are set, press the automatic button to enter the automatic baking program. When the baking time is reached, the machine shuts down automatically. If the temperature exceeds the safety temperature value, an alarm will be issued automatically, the red indicator light will turn on, heating will stop automatically, and the alarm message will be displayed on the screen.
10. Dry gas filling: The chamber can be filled with dry gas to any set value between -0.1 MPa and -0.02 MPa, and the gas filling stops automatically at the set value.
11. Fault alarm: During normal operation, fault prompts and fault cause descriptions can be displayed on the screen.
12. Vacuum pipe: The vacuum pipe is corrosion resistant.
13. Program interlock: Program interlock to prevent gas leakage between layers.

Practical Operating Notes

• Loading the electrode roll: the oven is equipped with a specially designed electrode roll trolley and a lift truck (400 kg) for electrode roll loading. Load the roll on the trolley and transfer it into the chamber before starting a cycle.
• Setting the program: set the total baking time, cycle time, vacuum time, and drying time for each chamber, then press the automatic button to enter the automatic baking program. The two oven layers are independently controlled, so separate programs can run in parallel.
• Dry gas filling: the chamber can be filled with dry gas to a set value anywhere between -0.1 MPa and -0.02 MPa; the gas filling stops automatically when the set value is reached.
• Automatic completion: when the baking time is reached, the machine shuts down automatically and returns to vacuum pressure holding after the final step.
• Monitoring and alarms: during normal operation, fault prompts and fault cause descriptions are shown on the screen. If the temperature exceeds the safety temperature value, an alarm is issued automatically, the red indicator light turns on, heating stops automatically, and the alarm message is displayed.
• Over-temperature protection: the oven is fitted with multiple position-type over-temperature protection devices to prevent loss of temperature control.
• Interface connections: vacuum and nitrogen interfaces are located at the rear of the equipment - vacuum DN15, dry gas filling Ø12 mm air pipe.
• Installation clearances: allow at least 1500 mm in front of the oven for operation and at least 500 mm on the left, right, and rear sides for service.
• Environmental conditions: operate within -5 to 35 °C and ≤40% humidity, with no flammable or explosive materials around the equipment.

Engineering FAQ

Q1: What is the TOB-PT02-B1 specifically designed for? 

The TOB-PT02-B1 is a vacuum drying oven specially designed for battery electrode rolls. It is equipped with a specially designed electrode roll trolley and a lift truck (400 kg) for electrode roll loading, and it performs electrode roll drying under vacuum with dry gas filling, using external-circulation hot air heating.

Q2: How many chambers does the oven have, and can they be controlled separately? 

The oven has two chambers with inner chamber dimensions of 600 (H) x 500 (W) x 600 (D) mm each. The two oven layers are separately controlled: the total baking time, cycle time, vacuum time, and drying time can be set for each layer independently, and each layer can run its own automatic baking program. The program interlock prevents gas leakage between layers.

Q3: What is the working cycle of the oven? 

Each machine can work in a continuous cycle. The basic process is: open the door and place the electrode roll into the oven, set the heating time, vacuum time, and nitrogen time, and the system automatically completes the heating and timed ventilation according to the set parameters. When the baking time is reached, the machine shuts down automatically and returns to vacuum pressure holding.

Q4: What are the temperature and vacuum specifications? 

The temperature range is room temperature to 120 °C. When the chamber is pumped to between -0.1 and -0.098 MPa, the digital display shows 24-hour pressure retention of ≥95%. The display error between the set value and the stable display value is ≤±0.1 °C, and the temperature uniformity at points within 50 mm from the wall of the inner chamber is ≤±5 °C at atmospheric pressure.

Q5: What gas sources does the oven require? 

The oven uses dry gas at 0.1-0.2 MPa, vacuum at -0.098 to -0.1 MPa, and compressed air at 0.4-0.5 MPa. At the installation site, the compressed air supply is specified at 0.6-0.7 MPa through an Ø8 air pipe, nitrogen at 0.1-0.2 MPa through an Ø12 air pipe, and vacuum at -0.1 MPa through a DN15 vacuum pipe.

Q6: How is the oven controlled? 

The oven is controlled by a PLC with a touch screen. The control system includes the PLC, touch screen, pressure sensor, high vacuum baffle valve, solid state relay, temperature controller, and solenoid valve group. Each working chamber works independently, and the working mode of heating, vacuum pumping, and nitrogen filling is PLC automatic circulation, with the operation of each working section set through the touch screen. The touch screen provides centralized operation, and fault prompts and fault cause descriptions can be displayed on the screen during normal operation.

Q7: What safety features does the oven provide? 

The oven is fitted with multiple position-type over-temperature protection temperature control devices, which improve the precision of over-temperature protection and prevent temperature control safety problems such as loss of temperature control. The door is an elastic double-layer glass door with three-layer pressure detection and overpressure protection. If the temperature exceeds the safety temperature value, the machine automatically issues an alarm, the red indicator light turns on, and heating stops automatically, with the alarm message shown on the display.

Q8: What are the installation requirements? 

The front of the oven shall not be less than 1500 mm from the wall, and the left, right, and rear sides shall not be less than 500 mm. The power supply is three-phase AC 380 ± 38 V at 50 ± 1 Hz, and the user must provide a separate distribution switch and the power connection outside the equipment. The electrical energy consumption is ≤18 kW/hour at maximum and ≤3 kW/hour at uniform operation. The environment must be -5 to 35 °C with humidity ≤40%, with no flammable or explosive materials around, and flammable items, combustible gases, or explosive substances must not be baked in the chamber.

Q9: What spare parts are supplied with each machine? 

Each machine is supplied with: 1 manual, 2 K-type temperature probes, 1 sealing ring, 2 solid state relays (40DA), and 2 heating tubes (custom).

Ready to add automatic vacuum drying to your electrode roll production? Request a quotation for the TOB-PT02-B1 with your electrode roll dimensions, required moisture level, and production rhythm. Our battery equipment engineers can advise on the dual-chamber configuration, the trolley and lift truck arrangement, and the drying process settings.

tob.amy@tobmachine.com| +86 181 2071 5609

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