1 Classification Overview   Drying oven is divided into electric constant temperature drying oven, electric blast drying oven, vacuum drying oven, infrared drying oven, etc. according to different drying substances. It has been widely used in industries such as food, biochemistry, electronic communication, plastics, cables, electroplating, hardware, automotive, optoelectronic industry, rubber products, molds, spraying, printing, …

The safety performance of batteries has a significant impact on the smooth and reliable operation of electric vehicles, therefore detailed safety performance testing of batteries is necessary. The safety performance inspection of electric vehicle batteries includes overcharging and discharging tests, short circuit tests, high temperature tests, needle puncture impact tests, mechanical performance tests, corrosion resistance …

Lithium ion batteries pose safety risks in both civil aviation and road transportation, as well as in transportation and household appliances. In order to find solutions to these problems, the impact of mechanical vibration on the performance and thermal runaway of lithium-ion batteries under low voltage conditions was studied. Under low voltage conditions, mechanical vibration …

The significance of nail penetration testing Nail Penetration Test is an internal short circuit testing method that tests the safety of lithium-ion batteries to withstand internal short circuits. Use steel nails to penetrate the battery, simulate an internal short circuit, and conduct a test to confirm if the battery is smoking, catching fire, or breaking. …

In the current commercial lithium-ion battery products, the charging and discharging process of the battery is often accompanied by the generation of heat. If the battery generates too much heat during the charging and discharging process and cannot dissipate it in a timely manner, significant degradation and degradation of battery performance may occur due to …

2 Battery Cell In general, the manufacturing process of lithium-ion batteries includes steps such as mixing positive and negative electrode materials, coating, rolling, cutting, winding or stacking, electrode ear welding, liquid injection, sealing, formation, exhaust, and capacity separation. Each of these processes may cause an increase in battery internal resistance or short circuit, resulting in …

Lithium ion batteries stand out among chemical energy storage devices due to their high energy density, high power density, and long service life. They have been widely used in the field of portable electronic products due to their mature technology. With the support of national policies, the demand for lithium-ion batteries in the fields of …

Compared to applications such as laptops, mobile phones, and fixed purposes such as energy storage and backup power, the usage environment of lithium-ion batteries for electric vehicles is more complex, varied, and demanding. For example, batteries need to be exposed to a wide temperature range for operation, battery packs need to withstand prolonged vibrations during …

2.2 Analysis of Cycle Test Data for Power Battery System (1) Power battery system 100% charge discharge deep cycle The power battery system was subjected to 170 cycle life tests at 100% charge and discharge depth (100% DOD), with a coolant temperature of 25 ℃ and a flow rate of 8 L/min during the cycling …