With the continuous advancement of energy technology, the use of electric vehicles has become a viable solution to environmental problems. Compared with other types of batteries, lithium-ion batteries have the advantages of high energy density, long cycle life, easy use and maintenance, etc., and have become the first choice for power batteries for electric vehicles. …

Drop Test National standard GB31241GB/T18287 requirements: fully charged lithium-ion battery square battery six sides of each side fell once, fell to the cement ground, a total of six drops with a height of 1 meter; The positive and negative poles of the circular battery each fell once and the cylinder surface fell four times to …

Since the mass production of lithium battery, it has rapidly led the trend in the field of battery with its excellent performance such as high energy ratio, long cycle life and high electrode voltage. It has an absolute advantage in mobile phone, computer and other industries, and has become one of the important research topics …

Lithium-ion batteries are widely used in various fields such as mobile devices, energy storage and new energy vehicles with their advantages of high cycle life than energy, but compared with other types of batteries, their safety is the main problem that needs to be solved. Lithium-ion batteries produce safety problems mainly through heat generation, and …

3.Protection of hardware facilities The elements of personnel protection have been listed above. It is not difficult to prepare these equipment. The important thing is to use appropriate equipment on appropriate occasions. Laboratory management should standardize this effective document, remove the paralytic thought of test operators and maintain preventive awareness. Regular drills may be as …

Basic contents of protection Compared with other types of power batteries, electric vehicle power lithium-ion battery is more prone to unsafe conditions such as combustion and explosion due to its electrochemical characteristics, structural characteristics and application environment, such as no special attention in the test process. During the test, especially in the test with high …

2.1.2 Overcharge / overdischarge test In order to evaluate the function of overcharge / overdischarge protection system, it may occur when the battery charging or discharging exceeds the limits recommended by the manufacturer, such as charger failure. Almost all standards and regulations stipulate this test item The important safety hazards during overcharge are electrolyte decomposition, …

Power lithium-ion batteries must pass a series of safety tests before they can be used in electric vehicles. These safety tests are to understand and identify the potential weakness and vulnerability of the battery under abnormal conditions, and determine the performance of the battery under severe conditions. Due to the limitation of space, the author …

Battery product standards, especially safety standards, are not only an important basis for restricting quality, but also an important means to standardize market order and promote technological progress. This paper introduces, summarizes and analyzes the existing common standards, and briefly discusses the problems existing in these standard systems.   Common power lithium ion battery standards …

Lithium ion battery, and the whole sample composed of non user replaceable battery / lithium ion battery and its electronic products. For non user replaceable batteries, they shall be installed in electronic products as an overall sample for environmental safety test of lithium-ion batteries in the standard; For non user replaceable lithium-ion batteries, they can …