Simulated High Altitude and Low Pressure Test cham...

Low Pressure Test Chamber Equipment summary

Battery low-voltage (high altitude) simulation test, all tested samples are tested under a negative pressure of 11.6kPa (1.68psi). The final result of the test requires that the battery cannot explode or catch fire. In addition, the battery must not smoke or leak. The battery protection valve cannot be destroyed.

Low Pressure Test Chamber Main features and functions

The inner box of the box is made of high-quality SUS201# stainless steel plate material. The studio is made of high-quality steel plate with rounded corners, smooth, smooth and easy to clean. The front door of the test chamber adopts a reinforced design. The left side of the door is equipped with anexposedhinge and the right side is equipped with a powerful door lock to effectively seal the door. The hinges and locks usereinforced equipment-specific standard parts. There are 6 casters at the bottom and foot cups for easy movement and fixation. This machine adopts PLC touch screen control system, which is convenient and intuitive, and can easily control eachinput test parameter. A rubber sealing ring is installed between the working room and the door to ensure a high degree of vacuuminthebox;Integrated: the low-pressure box is at the bottom and the vacuum pump is at the rear; The vacuum value can be automatically set and the vacuum can be replenished automatically.

Low Pressure Test Chamber Comply with standards

GB 31241-2022 "Safety Requirements for Lithium-Ion Cells and Battery Packs for Portable Electronic Products"

YDT 2344.1-2011 Universal lithium iron phosphate battery pack Part 1: Integrated battery pack.

standard requirement: After the battery is fully charged according to the prescribed test method, place the battery in a vacuumbox at 25±5°C,evacuate to reduce the pressure in the box to 40kPa (simulated altitude 7200m), and maintain it for 6 hours. Acceptance criteria: The battery should not catch fire, explode, or leak, and the voltage drop should not exceed10%.

standard requirement: After the battery is fully charged according to the prescribed test method, place the battery in a vacuumbox at 20°C±5°C, evacuate to reduce the pressure in the box to 40kPa (simulated altitude of 7200m), and maintain it for 6hours. Acceptance criteria: The battery should not catch fire, explode, or leak.

Low Pressure Test Chamber Technical principles

1. The vacuum chamber is required to be a completely sealed container, round or square;

2. Principle of vacuuming: Connect a pipe from the completely sealed vacuum chamber, pass through the manual valveor solenoid, and then connect it to the air extraction port of the vacuum pump; when the required vacuumdegreeisreached, stop the vacuum pump and close the manual valve or solenoid at the same time. valve to maintainacertaindegree of vacuum in the box; at the same time, a vacuum gauge is installed to display the vacuumdegree;

3. After starting the vacuum pump, the vacuum pump will compress the air in the completely sealed container sothatthe pressure in the container is lower than the ambient pressure. It will be discharged to the environment throughtheexhaust port and all the air in the container will be removed to achieve the vacuum effect; negative The lower thepressure, the higher the vacuum;

4. When the air in the box is completely restored, start the inflation function to fill the box with ambient air. Whenthepressure is the same as the ambient pressure, it is completely restored;

5. Carry out vacuum test using this cycle

Low Pressure Test Chamber Technical Parameters