Laboratory Negative Pressure Formation Machine For Battery Prismatic Cell Forming

1、 Device Functions

1. Equipment function: The equipment is mainly used for the formation of lithium-ion prismatic cells under high temperature (30-80 ℃) and negative pressure (negative 10-negative 95) conditions. It can quickly activate the battery formation performance at high temperature, and vacuum extract the air in the battery formation, while shortening the formation time and reducing the battery production cycle.

2. This equipment consists of a power cabinet (5V60A, 16 point position), a needle bed fixture set (16 point position/set), and a negative pressure vacuum system (1 layer, 2 pipes with a diameter of 26mm in each layer, divided into 16 points, each single pipe with a diameter of 10mm, fluororubber anti-corrosion suction cups); (Place the power supply and fixture group separately).

Picture for reference only

2、 Process flow

Rail lift car delivers fixture group → pushes fixture group into needle bed → starts needle bed → starts negative pressure process and charges into formation → formation is completed → automatically opens needle bed fixture → rail lift car manually returns fixture group → next round of fixture group charging into formation

3、 Technical parameters

1. Suitable for prismatic cell size: 54153173 (compatible size: thickness: 38-72mm, width: 120-180mm; height: 110-220mm, adjustable according to actual conditions);

2. Charging voltage setting range: DC 0-5V;

3. Discharge voltage setting range: DC 5~2V (Adjustable lower discharge limit);

4. Charging and discharging current setting range: DC 0.05~60A;

5. Voltage accuracy: ± (0.05% RD+0.05% FS);

6. Current accuracy: ± (0.05% RD+0.05% FS);

7. Voltage resolution: 1mV;

8. Voltage stability: ≤ 0.1%;

9. Current resolution: 1mA;

10. Current stability: ≤ 0.1%;

11. Charging energy-saving efficiency: up to 80%;

12. Discharge feedback efficiency: up to 78%;

13. Power accuracy: ± (0.05% RD+0.05% FS);

14. Current response time: Hardware response time when the current output is 60A: ≤ 50ms;

15. Time setting range: arbitrary setting within 0~9999 minutes, Unit of time are h, min, s, optional, resolution 0.1s;

16. Time accuracy: ≤ ± 0.1%;

17. Recording method: charging recording time, discharging recording time, static recording time, global recording time;

18. Recording frequency: 100ms~65535s

19. Sampling frequency: about 10ms per box;

20. Charging mode: constant current and voltage limiting; Constant current and voltage; Constant power charging;

21. Charging cut-off conditions: voltage; Current; Time; Capacity; Temperature;

22. Discharge mode: constant current and constant power discharge;

23. Discharge cut-off conditions: voltage; Current; Time; Capacity; Temperature;

24. Number of single cycle steps: ≤ 100 steps, with nested loop function;

25. Continuous working hours: The equipment power should meet the requirements of all channels being able to operate at full load, 365 * 24 hours without interruption;

26. Software functions:

1) The software supports various types of continuation, such as manual pause continuation, software shutdown continuation, power outage interruption continuation, device communication interruption continuation, and abnormal stop continuation;

2) Supports barcode scanning, capable of scanning one-dimensional and two-dimensional codes, including sequential scanning, channel skip scanning, and disk loading scanning;

3) Local testing detailed data storage allows you to view the current test data and historical data of each channel at any time. There are two corresponding ways to present data and curves, and it supports exporting Excel reports in single or batch form. Additionally, you can set automatic data export after testing as needed.

4) It supports capacity sorting and can grade batteries;

5) Support the judgment of pass/NG results based on specified cycle capacity, voltage, time, and other information after the test is completed;

6) Support various step protection and global voltage, current, and temperature anomaly protection, and provide abnormal alarms;

7) Support channel parallel connection (optional according to equipment);

8) Support unit conversion;

9) Support database server backend storage or MES docking;

10) Software offline protection;

11) The software provides free upgrades.

27. Protection function

1) Data anomaly recovery;

2) Software overvoltage, undervoltage, overcurrent, undercurrent, and overcurrent protection

3) The range of voltage and current protection values can be set, and can be prompted and recorded after protection;

4) Set high level alarm light to indicate status;

5) Set an emergency stop button to automatically open the fixture during an emergency stop;

6) Equipped with a smoke alarm, the machine stops running and alarms when a smoke alarm occurs;

7) After the equipment alarms and shuts down, the unfinished process can continue from the interrupted position without the need to start the process from scratch;

8) If the communication between the lower computer and the upper computer is interrupted and the communication is restored to normal, the work can continue according to the original process;

9) After an abnormal power outage occurs, the current process step can be continued;

10) When there is a time communication interruption or PC failure, the device will automatically enter a waiting state, and continue the current process after the communication is quickly reset.

28. Technical parameters of vacuum part:

1) Vacuum degree reached: -1kPa~-90kPa (the equipment comes with a vacuum pump and filtering buffer system);

2) Vacuum setting resolution: ± 0.01Pa

4、 Component brands and spare parts

1. Main device configuration

2. Random accessories

3. Other configuration requirements:

3.1 Including power cabinet, one set of vacuum pump belt (negative pressure anti-corrosion filter, with buffer tank),

3.2 One stacking car (one car can be equipped with ten machines), with a set of hot air heating system (according to customized requirements, non-standard configuration).

3.3 One set of tray racks (one on the equipment, one spare, one out of 16, drawer combination type);

5、 Main component configuration

1. Schematic diagram of fixture structure

2. Schematic diagram of high current probe structure

3. Schematic diagram of negative pressure suction cup structure

4. Negative pressure cup (the overall structure is made of special treatment materials that are corrosion-resistant and high-temperature resistant, and the negative pressure pipeline is made of flexible PTFE corrosion-resistant material)

6、 Installation environment requirements

1. Configuration power supply: AC380V, 50Hz, voltage fluctuation range:+10%~-10%; The total power of the equipment is about 9KW;

2. Compressed air: 0.6~0.8Mpa; Pressure fluctuation ± 1% (clean air after water removal, oil free, filtration, and pressure stabilization);

3. Vacuum source: -0.25~0.95Kpa;

4. Dry nitrogen source: 0.1~0.3Mpa;

5. Equipment specifications:

1) Equipment weight: approximately 200kg;

2) Overall dimensions: approximately 1600mm long x 1200mm wide x 1650mm high;

3) Appearance color: light gray or customer specified.

6. Environmental requirements:

1) Environmental temperature: 0-45 ℃;

2) Relative humidity: 30% to 75% RCH, ensuring that the on-site air is dry and unobstructed, without acid or alkali corrosion;

3) Ground wire: protective grounding.