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Lithium battery diaphragm rupture temperature measurement system and use method

A lithium battery diaphragm and membrane breaking temperature technology, which is applied in the application of thermometers, thermometers, measuring devices, etc., can solve the problems of deviation of measured values ​​and easy decomposition, and achieve the effects of improving accuracy, simple structure and environmental friendliness.

Pending Publication Date: 2020-10-13
SINOMA LITHIUM BATTERY SEPARATOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrolyte is easily decomposed when exposed to air and high temperature, resulting in deviations in the measured values

Method used

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  • Lithium battery diaphragm rupture temperature measurement system and use method
  • Lithium battery diaphragm rupture temperature measurement system and use method
  • Lithium battery diaphragm rupture temperature measurement system and use method

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Embodiment Construction

[0018] The present invention provides a lithium battery diaphragm rupture temperature measurement system and its use method. In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings. This embodiment is only used to explain the present invention and does not constitute a statement of the present invention. Limitation of the scope of protection.

[0019] Such as figure 1 As shown, the present invention provides a lithium battery diaphragm rupture temperature measurement system. The lithium battery diaphragm rupture temperature measurement system includes: a heating device 1, a puncture device 2, a diaphragm 3, a measuring device 4, and a control and data acquisition and processing device 5. The puncture device 2 is composed of a septum clamp 21 and a puncture needle 22 , and the septum clamp 21 is located in the heating device 1 . The diaphragm 3 is clamped in the diaphrag...

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Abstract

The invention discloses a lithium battery diaphragm rupture temperature measurement system and a use method. The system comprises a heating device, a puncture device, a diaphragm, a measurement deviceand a control and data acquisition and processing device. The heating device, the puncture device, the measuring device and the control and data acquisition and processing device are connected with one another through electric signals. The relation of the diaphragm puncture strength changing along with the temperature can be measured through monitoring of the dynamic temperature, the diaphragm rupture temperature of the diaphragm can be accurately reflected through the change of the puncture strength, and the diaphragm rupture temperature measurement accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of lithium battery diaphragms, and in particular relates to a lithium battery diaphragm rupture temperature measurement system. Background technique [0002] The main function of the lithium battery separator is to separate the positive and negative electrodes, prevent the direct contact of the positive and negative electrodes from causing a short circuit of the battery, and at the same time allow the ions in the electrolyte to freely shuttle between the positive and negative electrodes. When the local temperature rises due to a short circuit during the use of the battery, and the temperature rises to close to the melting point of the separator, the micropores in the separator will self-close, the internal resistance of the battery will increase, and the current will decrease, which will protect the battery to a certain extent. The temperature at this time is called the diaphragm closure temperature. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30G01N25/48G01K7/02G01K13/00
CPCG01K7/02G01K13/00G01N3/30G01N25/48G01N2203/001G01N2203/006
Inventor 白麟高飞飞李玲王连广孙婧高坡李子阳刘杲珺陈淳白耀宗
Owner SINOMA LITHIUM BATTERY SEPARATOR CO LTD
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