Enhancing Battery Safety and Performance with Advanced Leak Detection

1. Enhancing Battery Safety and Performance with Advanced Leak Detection In the competitive energy storage industry, even a minor leak can lead to significant failures. That's why precise battery air tightness testing is vital to maintaining performance, extending lifespan, and, most importantly, ensuring safety. This article uncovers the advanced air tightness testing for batteries and explains their profound impact on the overall health and reliability of energy storage systems. Learn how proper battery sealing and air tightness strategies can optimize the performance of your batteries and ensure a steady energy flow. Consequences of Leakage in a Battery Pack: 1.Cracking in the sealing glue between the upper cover and the bottom groove can lead to poor sealing, allowing external liquids to infiltrate and contaminate the battery’s environment. 2.Leakage through the safety valve due to sealing issues can cause damage to other components. 3.Inadequate sealing may result in acid leakage at the terminals, which can affect both the battery and vehicle wiring, leading to circuit failure. 4.Poor sealing will cause power loss, reduce battery life, and compromise safety.

2. Critical Parts for Air Tightness Testing: Key areas for air tightness testing methods for batteries include the junction between the upper and lower cases, high-voltage electrical connectors, water-cooled pipes, and heat dissipation ports (such as waterproof and breathable holes).

3. Challenges in Detection: •Battery packs typically have a large surface area, limited internal space, and thin shells that can withstand low pressure. •The high-voltage connector port and heat dissipation ports pose additional challenges in effective blockage during testing. Battery Pack Testing Criteria: Battery pack air tightness assessment is measured by two key indicators: pressure drop value and leakage rate. The pressure drops value tracks internal pressure changes during testing, while the leakage rate monitors how quickly leak occur. These parameters are essential for battery quality control through air tightness testing. Tests are generally classified into positive pressure and negative pressure categories, based on the battery pack’s internal and external atmospheric pressures. During testing, dry compressed air is either inflated (positive pressure) or deflated (negative pressure) to determine if any leaks exist. While leaks cannot be measured directly, pressure changes provide clear indications. A significant drop in pressure signals a potential leak, crucial for leak detection for battery performance. Conclusion: To maintain peak performance and ensure safety, energy storage batteries require rigorous air tightness testing to prevent leaks that could lead to hazards or reduced efficiency. Lithium-ion battery air tightness tests are critical for ensuring long-term reliability and performance. By adopting robust air-tightness testing methods for batteries, manufacturers can ensure optimal battery durability and safety, preventing leaks in battery manufacturing and safeguarding both performance and safety.