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Battery thermal runaway spreading simulation device

A simulation device and thermal runaway technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problem of consuming physical batteries, achieve the effect of saving test equipment and improving the efficiency of experiments and research

Pending Publication Date: 2018-08-07
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristics of battery thermal runaway are related to the cause of fire, thermal power, battery material characteristics, etc. At present, such research is mostly based on actual tests of physical batteries. It is necessary to systematically study the influence of these factors on the characteristics of thermal runaway spread and consume a large number of physical batteries. do a lot of testing

Method used

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  • Battery thermal runaway spreading simulation device
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Examples

Experimental program
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Effect test

Embodiment 1

[0036] Refer to attached figure 2 , a battery thermal runaway simulation device, the battery module body 1 obtains heat energy through the conversion of external power supply power, the battery thermal runaway simulation device includes a battery module body 1, a heating body 3, a controller 7, a power supply 5 and wires 4. The first variable resistor 6, the second variable resistor 9, and the contactor 8.

[0037] In this embodiment, the above-mentioned battery body 1 is as attached figure 1 As shown, the positive electrode material of the battery is integrated into the positive electrode 12 of the battery, the negative electrode material of the battery is integrated into the negative electrode 13 of the battery, and the electrolyte solution is integrated into 14, and these three are fixed in the casing 11 through the frame.

[0038] In this embodiment, the above-mentioned heating element 3 is a heating resistance wire 2, which can generate a high temperature above 150° C.,...

Embodiment 2

[0042] Such as figure 1 As shown, in the battery module body 1 in this example, the battery positive electrode 12, the battery negative electrode 13 and the electrolyte 14 are not separately integrated, but the battery product that has completed the activation process on the battery production line but has not been sealed is directly used. This battery product Wound on the heating body 3. All the other structures are the same as in Embodiment 1.

Embodiment 3

[0044] Refer to attached figure 1 , a battery thermal runaway simulation device, the device realizes the thermal runaway simulation of the battery through a heating device; the battery module is short-circuited so that the module obtains heat energy and thereby induces the phenomenon of thermal runaway spread. In this embodiment, the battery module is only short-circuited for 1 battery cells. Except that the heating principle is different, the rest of the structure is the same as that of the first embodiment.

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Abstract

The invention discloses a battery thermal runaway spreading simulation device which can be controlled and simulate ignition, combustion and explosion of a secondary battery. The battery thermal runaway spreading simulation device comprises a battery module body and a heat source excitation control system, wherein the heat source excitation control system comprises a short circuit device, a heatingdevice and a controller; the heating device comprises a power supply and a first variable resistance; the short circuit device comprises a second variable resistance and a contactor; a heating body is arranged in the battery module body; the heating body is connected with the first variable resistance and the power supply in series by virtue of a wire; the battery module body is connected with the second variable resistance and the contactor in series by virtue of a wire; and the power supply and the contactor are respectively electrically connected with the controller, and the controller controls on-off of the power supply and the contactor. By adopting the battery thermal runaway spreading simulation device, testing equipment can be saved, and experiment and research efficiency can be improved.

Description

technical field [0001] The invention relates to a simulation device, in particular to a battery thermal runaway simulation device. Background technique [0002] It is well known that secondary batteries, especially lithium-ion batteries, are widely used in consumer electronics, energy storage devices and electric vehicles due to their high energy density and long service life, but their safety performance is still needs improvement. In recent years, more than 50 safety accidents such as lithium battery fire, combustion and explosion have occurred worldwide, among which the safety accident of Samsung mobile phone battery has the greatest impact. To study the safety control technology of batteries, it is necessary to conduct in-depth research on the spread characteristics of battery thermal runaway. The characteristics of battery thermal runaway are related to the cause of fire, thermal power, battery material characteristics, etc. At present, such research is mostly based o...

Claims

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Application Information

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IPC IPC(8): H01M10/617H01M10/658
CPCH01M10/617H01M10/658Y02E60/10
Inventor 莫愁王永峰唐焱张应红唐亮高成王岩黄伟胡清钟甘勇
Owner GUILIN UNIV OF ELECTRONIC TECH
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