Three Layer Automatic High Vacuum Drying Oven for Lithium Ion Battery

• After-sales Service: 1 Year
• Warranty: 1 Year
• Application: Industry, Lab
• Customized: Customized
• Certification: CE
• Structure: Desktop
• Model NO.: TOB-GZK03-D1
• Material: Stainless Steel
• Operational Method: Continuous
• Type: Drying Oven
• Transport Package: Standard Packing
• Trademark: TOB
• Origin: China
• Production Capacity: 100sets/Month

Product Description

Three Layer Automatic High Vacuum Drying Oven For Lithium Ion Battery

This TOB-GZK03-D1 high vacuum drying oven is used for lithium ion battery cells and electrode materials drying.

Compared with conventional oven, it has the advantages of stable performance, high vacuum, short baking time, good dehydrating and drying effect, good pressure retention, etc. It is combined with special high vacuum unit and cooling system to form an independent baking unit, which replaces the conventional oven.

 

Working principle

Each machine can work in a continuous cycle; Basic process: Open the door and put the cell or electrode into the oven, and then set the heating time, vacuum time and nitrogen time. The system will automatically complete heating and regular ventilation according to the set time parameters to complete the drying process.

 

Product feature

 

High vacuum design	The inner cavity is made by standard welding process of pressure vessel, with high vacuum retention, long service life and no deformation
Stable temperature uniformity	The uniformity at constant temperature is ±2ºC
Reasonable Space Design	The size of the inner cavity can be designed according to the size of the customer's battery to improve the efficiency of space utilization
Temperature control precision	Temperature control using thyristor SSR+PID mode, small thermal inertia, good temperature control effect
Heating mode	The hot air is used to circulate outside and inside the cavity, so that the temperature inside and outside the furnace cavity is consistent, and then through thermal radiation and heat transfer, so as to ensure the uniformity of the temperature of the cavity. When cooling down, the heating tube is closed, the heat inside is taken away through the wind circulation, and the cooling speed is accelerated
Six safety protections	Ensure operation safety and product reliability
Automatic program control	PLC program control heating, vacuum pumping, nitrogen injection, manual/automatic operation can be switched, automatic timing heating; Just set the heating time, vacuum time, nitrogen time, the program automatically complete the baking and ventilation process
The interior adopts double air duct principle	This function solves the problem of slow heating of the battery cell in the high vacuum, and the problem of low temperature of the glass door, so as to achieve good uniformity of rapid heating.

 

 

Oven Box structure

 

Inner cavity size	H350mm*W850mm*D1250mm(*3 PCS) (Can customized acccording to customer requirement)
Overall dimensions	H2030mm*W1480mm(Includes control electric box)* D2050mm
Shell material	A3 cold rolled steel plate, baking paint processing, color is black, white and red
Interior material	Stainless steel industry wire drawing board, thickness: 5.0mm
Way of open door	Single door
Interior sealing ring	Open mold casting form Silicone rubber O-ring, high temperature and corrosion resistant
Control mode	PLC Automatic control mode, touch screen operation
Vacuum and nitrogen filling locations and interface specifications	The interface position is at the rear of the device; The vacuum interface is KF40, and the dry air interface is¢12mm air pipe interface

 

 

Vacuum and temperature control

 

Vacuum degree	Vacuum degree of no-load cavity ≤ 10Pa, vacuum degree of full-load cavity: 50Pa -- 100Pa, air leakage for 24 hours ≤ 500Pa
Heating method	Adopt internal and external double circulation wind, internal and external double heat source dual control heating mode through heat radiation, heat conduction, electric heating control
External heating structure	U type circulating air, left air out, right air suction, upper and lower side exhaust, to achieve temperature consistency
Internal heating structure	Dual duct principle is adopted
Main heating temperature control	Temperature control accuracy within±0.5ºC
Temperature error inside the box	±2ºC(Empty box, constant temperature state);±4ºC (Full load, constant temperature)
Temperature range	Room temperature +10ºC~120ºC
Temperature rise speed	Room temperature ~85ºC≤30 minutes (atmospheric pressure, no-load state, the time for the instrument to reach the set temperature) temperature stability time in the furnace 60 minutes (empty); minutes at room temperature ~85ºC ≤45(full load condition, the time for the instrument to reach the set temperature) Temperature stability time in the furnace 80-100 minutes (full load);
Temperature rising state	The room temperature rises to the set value in a curve state, after constant temperature in a straight line state
Cooling way	The cold air system is connected with the outer air duct, and the cooling is conducted alternately from the outer air duct of the inner liner. The interior is cooled alternately by vacuum nitrogen
Cooling time	≤95 minutes (empty box, 100ºC~55ºC, cell detection), full load test time ≈100min (battery size depends on capacity)
Box surface temperature	The temperature in the furnace is 150ºC, and the surface temperature is ≤ room temperature +15 ºC
Each layer operates independently	Heating up, vacuum it, fill it with nitrogen

 

System composition

- The body part is mainly composed of sheet metal structure, heating system, blast circulation system, software control system, etc.

- The auxiliary cooling system is mainly composed of cooling exchange valves, cooling pipelines and high pressure fans to cool the cavity from the outside of working room;

- The auxiliary cooling system is shared by three chambers, which are independently controlled by valves;

- vacuum system, vacuum pipe composition

Security protection

1.The cavity overtemperature protection, when overtemperature automatically shut down the power supply;

2.Electric heating pipe overcurrent and short circuit protection;

3.Internal circulation fan over current and short circuit protection;

4.Control system over current and short circuit protection;

5.Special explosion-proof door, strong pressure resistance; And has the function of overpressure self-relief;

6. When the inner cavity is overcharged, the equipment can automatically close the inlet of nitrogen & dry gas to save gas and reduce gas loss;

7. Set time for independent sound and light alarm.

 

Vacuum system

The vacuum system provided by the supplier is allowed to open up to three cavities at the same time for vacuum pumping. When the vacuum degree is reached, the branch valve can be automatically closed before the vacuum pumping of other branches can be started

1. Ultimate vacuum <= 10Pa (no-load state), single chamber from atmospheric pressure to 10Pa <=10min (no-load state)

Vacuum leakage rate (no-load state of cooler) : close the valve after pumping to the limit vacuum, keep it for 1h, and the absolute value of the average decrease of vacuum degree is 100Pa≤20Pa; Keep the absolute value of 24h vacuum drop ≤500Pa (20Pa /h). Using a single pump multi-cavity arrangement of vacuum pumping; No load limit vacuum degree is less than or equal to 10Pa, vacuum degree is the actual vacuum set value according to the displacement of the pumped object changes: high vacuum degree is set at 50-100 Pa (can be efficient water removal); Low vacuum control ≤ -20kPa (limit under nitrogen exchange).

2. The vacuum system includes a two-stage vacuum pump and a vacuum pipe. The vacuum pump is self provided or by the supplier.

3. The vacuum piping should be confirmed according to the actual contract drawing, and the vacuum bellows should be provided by the supplier in a short distance according to the position between the vacuum pump and the oven. If additional vacuum piping is needed, it shall be confirmed in advance and the construction party shall be designated.

 

Power

- Power supply: 380V/ 50Hz, 3-phase 5-wire system

- Single machine total power: 12KW

- Vacuum system: 9KW

- Cooling system: 4KW

- Equipment weight: about 1650kg

 

The installation conditions

The front of the oven shall not be less than 1500mm from the wall, and the left and right rear sides shall not be less than 300mm.

 

Conditions of installation area (provided by Party A) are as follows:

Power supply: three-phase AC 380±38V, frequency: 50±1Hz; The user shall provide a separate distribution switch and be responsible for the connection of the power supply outside the equipment.

Air pressure: pressure -0.5Mpa, ¢8 pipe

Nitrogen: the pressure is 0.1~ 0.2MPa, and the nitrogen pipe is ¢12 pipe

 

Electrical energy consumption

Maximum ≤ 12KW/hour (excluding vacuum pump and cooling system)

uniform time≤ 3KW/hour (excluding vacuum pump and cooling system)

 

Environmental requirements

Temperature -5~35ºC, humidity ≤40%

There is no flammable or explosive gas, liquid or solid around

Avoid baking flammable items, flammable gases and explosive substances in the box.