With the continuous development of new energy battery technology, the performance of the battery pack is also improving. The energy density of the battery pack is getting higher and higher, which can provide more power or range. At the same time, battery packs are getting smaller and lighter, making them easier to carry or install. Correspondingly, the safety requirements of battery packs are getting higher and higher, requiring stronger protective measures.
Battery packs are made of multiple cells
Battery packs are complete battery systems that are made of multiple cells, and have gone through the processes of system design, electrical connection, mechanical structure, thermal management, etc. Battery packs are the final form of the battery. The battery pack is the final form of the battery, and it is the state that the battery presents in the actual application.
The main application areas of battery packs include:New energy vehicles: Battery packs are the core components of new energy electric vehicles, and are the source of power provided by electric vehicles. The energy density, safety and reliability of the battery pack directly affect the range, safety and service life of electric vehicles.
Energy storage system: Battery packs can be used to store electricity for emergency power supply, photovoltaic energy storage, wind power energy storage and other occasions.
Consumer electronics: Battery packs are widely used in consumer electronics such as cell phones, laptops, tablets, and wearable devices.
Industrial applications: Battery packs can also be used in industrial robots, drones, medical equipment and other industrial applications.
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Battery packs are the core components of new energy battery vehicles
New energy power battery packs, as the core components of electric vehicles, energy storage and other fields, are of vital importance for their safety. Waterproof sealing is one of the most important indicators of battery pack safety, and airtightness testing is an essential and important part of battery pack safety testing.
Battery pack airtightness testing is mainly for the battery pack shell, interface, connectors, etc., to ensure that the battery pack is not contaminated by dust, water vapor and other impurities from the external environment or intrusion, to prevent the battery pack from short-circuiting, explosions and other safety incidents.
National Testing StandardsThe airtightness testing standards for the new energy battery industry are usually set by relevant industry associations, government agencies or international organizations. Our country's latest testing standards for new energy batteries:GB 38031-2020 "Power Battery Safety Requirements for Electric Vehicles"
Power Battery Safety Requirements for Electric Vehicles
Battery Pack Air Tightness Testing Methods and Principles1. Pressure Decay Method: Also known as the Pressure Drop Method, this is a method that is used to test the air tightness of a battery pack. The current mainstream airtightness testing method. The test will charge the battery pack with a certain pressure of gas, and then observe the change of air pressure. If the gas pressure drops, it indicates that the battery pack is leaking.
2. Helium Leak Detection: Also known as helium leak detection, this is the mainstream leak detection method. Injecting helium gas into the battery pack, the helium detector detects whether there is any helium leakage inside the battery pack.
3. The water immersion method: also known as the soaking method, has been replaced by the pressure drop method and helium detection method due to slow testing efficiency and poor accuracy. The test is done by immersing the battery pack in water and then observing whether there are air bubbles inside the battery pack. If there are bubbles, the battery pack is leaking.
What are the battery pack testing equipmentsJCGK is now launching new energy testing equipments, such as:Gas Tightness Tester, Burst Pressure Tester, Breathing Cycle Tester, Breathing and Bursting All-in-One Machine, Pressure Loading Tester, Gas Pressure Resistance Tester, etc., which are widely used in battery cells, power batteries, storage batteries, square aluminum shell lithium batteries, cylindrical batteries, battery covers, Battery shell, PACK battery packs, battery packs, battery cells, breathing valves, explosion-proof valve safety testing, for the new energy battery industry escort.
JCGK new energy testing equipment
Summary:Battery packs are an important part of battery technology, and with the continuous development of battery technology, battery packs will be used in more fields.
Through strict airtightness testing and related safety performance testing, the quality and safety of battery packs can be effectively guaranteed, thus ensuring the safe operation of new energy vehicles, energy storage batteries and other products.
For more detailed air tightness testing solutions and application cases, please pay attention to Precision Industrial Technology Air Tightness.