Battery device capable of real-time monitoring of electrode stress changes, battery using the device, and application of the device

A technology of stress change and real-time monitoring, which is applied in secondary batteries, electrochemical generators, and measurement of the properties and forces of piezoresistive materials, etc. problem, to achieve the effect of great practical significance, simple operation, simple and efficient characterization

Active Publication Date: 2021-07-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the research work on battery electrode stress is mainly carried out by building an optical platform, using a multi-beam laser system and designing a miniature stress test cantilever. Characterization of stress evolution is far from practical application

Method used

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  • Battery device capable of real-time monitoring of electrode stress changes, battery using the device, and application of the device
  • Battery device capable of real-time monitoring of electrode stress changes, battery using the device, and application of the device
  • Battery device capable of real-time monitoring of electrode stress changes, battery using the device, and application of the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] reference figure 1 A battery device that can monitor electrode stress in real time, including:

[0039]The metal housing 1 is composed of an upper metal casing and a lower metal casing. In the present embodiment, the upper metal casing of the metal casing 1 is a positive electrode shell, and the lower metal casing is a negative electrode shell. When the opposite polarity is taken, the polarity of the remainder is The same opposite process can be processed. The longitudinal inner wall of the upper metal casing has an inner thread, and the longitudinal outer wall of the lower metal housing has an external thread.

[0040] The hollow cylindrical insulating member 2 is composed of an upper insulating hollow cylinder and a lower insulating hollow cylinder. The longitudinal inner and outer walls of the upper insulating hollow cylinder are respectively threaded and outer threads, and the upper insulating hollow cylinder is an insulating connection. The thread is connected to the i...

Embodiment 2

[0050] Basic structure is as in the case of the embodiment, the preparation process:

[0051] According to the bottom first, the metal gasket 7 is placed on the surface of the film pressure sensor 8, which is then used to connect the metal gasket and the negative electrode shell using a wire. The negative electrode sheet 6 is placed on the surface of the spacer, and the negative electrode sheet 6 uses a metal lithium foil, and then the diaphragm CelGard 2400 and the positive electrode plate 4 (lithium titanate slurry are coated on the aluminum foil current). Choose 1 mol / L Li PF 6 EC: DEC (volume ratio is 1: 1) mixed solution organic electrolyte, and add an appropriate amount to the electrode and the diaphragm. Thereafter, the lower insulating hollow cylinder is placed in the negative electrode shell, and the metal solid cylinder 3 is inserted into the lower insulating hollow cylinder, pressed on the positive electrode plate 4. Finally, the upper insulating hollow cylinder and t...

Embodiment 3

[0055] Basic structure is as in the case of the embodiment, the preparation process:

[0056] According to the bottom first, the metal gasket 7 is placed on the surface of the film pressure sensor 8, which is then used to connect the metal gasket and the negative electrode shell using a wire. The negative electrode sheet 6 is placed on the surface of the gasket (the active negative electrode material silicone slurry is dispersed in the copper set fluid surface), and then put the middle member 5 (diaphragm CelGard 2400) and positive electrode plate 4 (lithium iron phosphate slurry is coated) Aluminum foil agglomerates). Choose 1 mol / L Li PF 6 EC: DEC (volume ratio is 1: 1) mixed solution organic electrolyte, and add an appropriate amount to the electrode and the diaphragm. Thereafter, the lower insulating hollow cylinder is placed in the negative electrode shell, and the metal solid cylinder 3 is inserted into the lower insulating hollow cylinder, pressed on the positive electrod...

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Abstract

A battery device capable of real-time monitoring of electrode stress changes, comprising: a metal casing consisting of an upper metal casing and a lower metal casing; a hollow cylindrical insulator consisting of an upper insulating hollow cylinder and a lower insulating hollow cylinder, and a metal solid cylinder , set in the lower insulating hollow cylinder, as a conductive part connecting the positive and negative paths, and compact the battery assembly at the same time; the metal gasket is set under the battery assembly, and forms a complete battery circuit through the external wire and the lower metal shell ; The thin film pressure sensor is arranged under the metal gasket and is connected with an external data collector to collect the electrode stress changes uniformly transmitted by the metal gasket. The present invention also provides a battery adopting the device, which can be used as a battery stress detection device, and the device can monitor the stress changes produced by the electrodes of various types of batteries in different situations during charging and discharging in real time and with high sensitivity and in situ recording.

Description

Technical field [0001] The present invention belongs to the field of battery and mechanics, and more particularly to a battery device that can monitor electrode stress in real time, and the battery of the device and the apparatus of the apparatus. Background technique [0002] The unsustainable and environmental problems of traditional fossil energy have made great attention to the development of clean new energy development, and have become the hotspots of research and investment in recent years. A core problem of new energy development is the energy storage, and many energy storage modes have a core position to obtain the most widely used applications and attention. [0003] Among them, lithium, sodium, potassium, magnesium, aluminum, zinc plasma secondary batteries, all solid-state batteries and gel batteries have been studied, and varying degrees in different fields. [0004] However, these batteries composed of different electrode active materials, during charge and discharg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48H01M10/0525G01L1/18
CPCG01L1/18H01M10/0525H01M10/48Y02E60/10
Inventor 汪长安梁芃
Owner TSINGHUA UNIV
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