Test fixture, test system and test method

A technology of fixtures and clamping discs, which is applied in the field of test fixtures, test systems and methods, can solve problems such as complicated test work, inaccurate measurement results, and failure to meet high-temperature test requirements, so as to achieve convenient detection and operation and avoid melting outflow , to avoid the effect of errors in the results

Inactive Publication Date: 2021-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the fixture is easy to assemble and the pressure can be adjusted to avoid the problem of inaccurate measurement results caused by poor contact between the fixture and the solid electrolyte
At the same time, it avoids the problem that the test work in the prior art is complicated and cannot meet the high temperature test requirements

Method used

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  • Test fixture, test system and test method
  • Test fixture, test system and test method
  • Test fixture, test system and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Step 1: In an anhydrous and oxygen-free environment, weigh solid electrolyte powders of different masses (0.5g-1.0g), and press them into electrolyte discs through a tablet grinding tool. The thickness of the solid electrolyte discs ranges from 0.7mm- 1.5mm.

[0102] In a glove box, 1.0 g of electrolyte powder was put into a tableting mold, and held at a pressure of 10 Mp for 30 min to obtain an electrolyte disc with a diameter of 16 mm and a thickness of 1.13 mm.

[0103] Put the protective tube 10 into the load tank of the lower clamping plate 2, put the lower current collector 8 in the protective tube 10, place the pressed solid electrolyte sheet on the lower current collector 8, and then place it on the solid electrolyte sheet The upper collector sheet 7, and then cover the upper clamping disc 1 on the lower clamping disc 2, and align the central axes.

[0104] First pass the connecting bolt 3 through the threaded connecting through holes on both sides of the upper...

Embodiment 2

[0109] Weigh 0.35g of positive electrode material in the glove box, put the positive electrode powder into the tableting mold, take it out and keep the pressure at 10Mp pressure for 1min; weigh 0.5g of solid electrolyte, spread the solid electrolyte powder evenly on the tableting mold positive electrode material After taking it out, keep the pressure at 12Mp pressure for 1min; weigh 0.2g of negative electrode material, evenly spread the negative electrode powder on the solid electrolyte in the tablet mold, take it out and keep the pressure at 15Mp pressure for 30min, and eject the mold to get a hot battery cell body battery.

[0110] Put the protective tube 10 into the loading slot of the lower clamping plate 2, put the lower current collector 8 in the cylinder, place the pressed thermal battery unit battery on the lower current collector 8, and then place the thermal battery unit Place the upper current collector 7 on the battery, then cover the upper clamping disc 1 on the l...

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Abstract

The invention provides a test fixture, a test system and a test method, and belongs to the technical field of conductivity and battery electrochemical performance test. The test fixture comprises a clamping part and a current collecting part. The clamping part comprises an upper clamping disc and a lower clamping disc; a blind hole with an upward opening is formed in the center of the lower clamping disc and serves as a carrying groove. The current collecting component comprises an upper current collecting piece and a lower current collecting piece; the upper current collecting piece, the object to be detected and the lower current collecting piece are sequentially placed in the object carrying groove from top to bottom; the upper clamping disc is located above the lower clamping disc. By arranging the protective cylinder, the problem of electrolyte fusion and outflow at high temperature is solved; the upper collector piece and the lower collector piece are arranged above and below the object to be tested, so that the problem of test result error caused by poor contact between the clamps and the solid electrolyte is solved. And the system is convenient to operate and wide in application range, and has important significance for measuring the conductivity of the solid electrolyte / the electrochemical performance of the single thermal battery at high temperature.

Description

technical field [0001] The invention belongs to the technical field of conductivity and battery electrochemical performance testing, in particular to a testing fixture, a testing system and a method, in particular to a fixture for testing the ion conductivity of a solid electrolyte at high temperature, and also to a solid electrolyte ion conductivity rate test system, and a solid electrolyte ion conductivity test method, and a thermal battery cell electrochemical performance test method. Background technique [0002] Thermal battery is a kind of disposable heat-activated reserve battery that is activated by using an electric fire head to ignite the internal heating agent to melt the electrolyte into an ion conductor. It occupies a very important position in military power supplies. Hot battery molten salt electrolytes currently have serious problems: molten salt electrolytes have strong fluidity at high temperatures, poor anti-overload and anti-spin capabilities, and are eas...

Claims

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Application Information

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IPC IPC(8): G01R31/389G01R27/02G01R1/02
CPCG01R31/389G01R27/02G01R1/02
Inventor 朱艳丽张兰李伟卜新雅王聪杰陈恒帅
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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