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.

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 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

error inside the box

±2℃（Empty box, constant temperature state）；±4℃

（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

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, 100℃~55℃, cell detection), full load test time ≈100min (battery size depends on capacity)

Box surface

temperature

The temperature in the furnace is 150℃, and the surface

temperature is ≤ room temperature +15 ℃

Each layer operates independently

Heating up, vacuum it, fill it with nitrogen