ECS-GB Heavy Object Impact Tester (W300*D300*H300mm, 9.1 kg, 770 mm), EGBHOIT
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A Heavy Object Impact Tester is a specialized mechanical abuse testing platform used to evaluate the safety and structural integrity of batteries when subjected to a sudden, concentrated crushing force. It simulates real-world accidents where a heavy object might fall onto a battery during transport, storage, or operation. This test is a mandatory requirement for international certifications such as UN 38.3 (Test T.6), UL 1642, and IEC 62133.
The test is designed to create a specific impact energy directed through a steel rod to simulate a "point" or "line" impact rather than a flat crush. (1) Sample Placement: The battery (cell or coin) is placed on a flat, hard surface. (2) Bar: A 15.8 mm (± 0.1 mm) diameter 316 stainless steel bar is placed across the center of the sample. (3) Impact: A 9.1 kg (± 0.1 kg) mass is dropped from a height of 610 mm (± 25 mm) onto the intersection of the bar and the sample. (4) Observation: After the impact, the battery is monitored for 6 hours. To pass, the battery must not catch fire or explode during this period.
Because this test can result in violent "Thermal Runaway" events, the tester is built as a high-security containment system. (1) Impact Mechanism: A vertical guide rail system that ensures the weight falls perfectly straight without friction interference. Automated lift via PLC and a digital encoder allows the operator to set the exact drop height (usually 610mm) through a touch-screen HMI. An electromagnetic or pneumatic gripper releases the weight instantly to ensure a true free-fall. (2) Explosion-Proof Chamber: The inner chamber is made of heavy-duty SUS 304 stainless steel to withstand shrapnel and chemical spray. A multi-layered, explosion-proof tempered glass window (often with a stainless steel mesh overlay) for safe visual monitoring. A mechanical vent on the top of the chamber to safely release the pressure wave if a battery explodes. (3) Safety & Fire Suppression: For safety, the control panel is typically located on a separate console or behind a protective wall. A high-volume fan automatically clears toxic smoke and gases (HF, CO, H2) after the test. Integrated CO2 or water-mist nozzles can be triggered from the HMI if the battery ignites.
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