Products Description
The XW-GZK03-D1 high vacuum drying oven is specifically designed for drying lithium-ion battery cells and electrode materials.
In comparison to traditional ovens, this model offers several superior features, including stable performance, high vacuum levels, reduced baking time, excellent dehydration and drying efficiency, and reliable pressure retention. It integrates a specialized high vacuum unit and a cooling system to create an independent baking unit, effectively replacing conventional ovens.
Working Principle:
The machine operates in a continuous cycle. The basic process involves opening the door to place the cell or electrode inside the oven, followed by setting the heating time, vacuum time, and nitrogen time. The system then automatically executes the heating and periodic ventilation processes based on the preset time parameters to ensure a thorough drying process.
Technical Parameters
| 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 ±2℃ |
| 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±0.5℃ |
| Temperature | ±2℃（Empty box, constant temperature state）；±4℃ |
| error inside the box | （Full load, constant temperature） |
| Temperature range | Room temperature +10℃~120℃ |
| Temperature rise speed | Room temperature ~85℃≤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 ~85℃ ≤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 | The room temperature rises to the set value in a curve state, |
| 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, 100℃~55℃, cell detection), full load test time ≈100min (battery size depends on capacity) |
| Box surface | The temperature in the furnace is 150℃, and the surface |
| temperature | temperature is ≤ room temperature +15 ℃ |
| 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 -5~35℃, 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. | |
| Environmental requirements | |
| Temperature -5~35℃, 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. |
