18650 lithium battery thermal runaway chain reaction test method
A technology of chain reaction and testing method, which is applied in the direction of measuring electricity, measuring devices, and measuring heat, and can solve the problems of less research on the law of chain reaction of thermal runaway of lithium batteries
Inactive Publication Date: 2016-09-28
CIVIL AVIATION UNIV OF CHINA
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- Abstract
- Description
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- Application Information
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Problems solved by technology
Existing research mainly uses ARC, DSC, C80 and other thermal analysis instruments to analyze the thermal runaway process of single-cell 18650 lithium batteries or lithium battery materials, and seldom studies the law of thermal runaway chain reactions of lithium batteries.
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[0020] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings, so as to make the technical solutions of the present invention easier to understand and grasp.
[0021] like figure 1 , 2 , Shown in 3, a kind of 18650 type lithium battery thermal runaway chain reaction test method is characterized in that, comprises the following steps:
[0022] Step (1): Provide multiple 18650-type lithium batteries, heating rods, multiple thermocouples, intelligent temperature controllers, temperature recorders, and aircraft cargo hold simulation cabin 6 . In this embodiment, the size of the heating rod is consistent with that of the 18650 type lithium battery, and the power of the heating rod is 150W. The thermocouple is K type, the probe length is 10cm, and the diameter is 1.5mm. The aircraft cargo compartment simulation cabin 6 is welded with stainless steel plates, and its size simulates the actual size o...
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Abstract
The invention discloses a 18650 lithium battery thermal runaway chain reaction test method comprising the following steps: providing multiple 18650 lithium batteries, a heating rod, multiple thermocouples, an intelligent temperature controller, a temperature recorder and a simulated aircraft cargo compartment; closely connecting the multiple 18650 lithium batteries to the heating rod; fixing one thermocouple to the surface of each 18650 lithium battery and fixing one thermocouple to the surface of the heating rod; placing the 18650 lithium batteries, the heating rod and the thermocouples, which are fixed as a whole, into the simulated aircraft cargo compartment, and closing the door of the compartment; connecting the thermocouples to the temperature recorder outside the simulated aircraft cargo compartment, and calibrating the temperature recorder; respectively connecting the thermocouples to the output end and the input end of the intelligent temperature controller outside the simulated aircraft cargo compartment; and recording data. The beneficial effect is that the temperature at which thermal runaway occurs to 18650 lithium batteries and the number of batteries suffering thermal runaway can be tested, and the thermal runaway transmission security of different 18650 lithium batteries can be compared.
Description
technical field [0001] The invention relates to the field of civil air transportation of dangerous goods, in particular to a test method for thermal runaway chain reaction of a 18650 type lithium battery. Background technique [0002] The two UPS flight crashes in 2006 and 2010 have caused the fire hazard of lithium battery air transportation to be widely concerned around the world. Lithium batteries have a high energy density. During transportation, they may be affected by high temperature, impact, and internal defects of the battery, resulting in thermal runaway that rapidly releases internal heat. The 18650 type lithium battery is widely used, and the demand for air transportation is large. A single 18650 type lithium battery air transportation package usually contains hundreds of battery cells. The thermal runaway of a single battery cell in the package may cause the entire package to fall into a sea of fire, and the thermal runaway of lithium batteries is difficult t...
Claims
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Login to View More IPC IPC(8): G01R31/36G01K7/02
CPCG01K7/02G01R31/378
Inventor 张青松曹文杰罗星娜郭超超
Owner CIVIL AVIATION UNIV OF CHINA