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Ultrasonic scanning device, application thereof and method

A scanning device, ultrasonic technology, applied in measurement devices, analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, etc. , does not have problems such as fluidity, and achieves the effect of high-precision and rapid ultrasonic scanning analysis, improving consistency, and eliminating defective batteries

Active Publication Date: 2019-01-29
无锡领声科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with the solid medium is that it does not have flowability, and the relative position between the ultrasonic transducer and the object to be measured is fixed, so it is difficult to realize the mechanical scanning of the object to be measured by the ultrasonic transducer; and when the ultrasonic transducer When it is removed from the surface of a test item to detect another test item, the rigid solid medium will be irreversibly damaged, and it does not have the ability to continuously scan different test items

Method used

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  • Ultrasonic scanning device, application thereof and method
  • Ultrasonic scanning device, application thereof and method
  • Ultrasonic scanning device, application thereof and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 A Vertical Tube Type Ultrasonic Scanning Device for Detecting Internal Defects in a Prismatic Battery

[0048] Square aluminum shell lithium-ion battery is a common type of battery in the current power battery market. It has a square appearance, and inside is a multi-layer electrode material, separator, and current collector that are wound or laminated, and are infiltrated by electrolyte. The use of ultrasonic waves can detect internal pole piece defects, electrolyte injection distribution, internal gas, etc., which is of great significance to ensure battery quality. In this embodiment, a square aluminum case lithium-ion battery with a size of 150mm x 100mm x 30mm is used as the object to be tested.

[0049] The inner wall of the drum is made of plexiglass, with an outer diameter of 200mm, a wall thickness of 3mm, and a height of 300mm. The bottom is closed and the upper end is open. The axial direction is perpendicular to the horizontal plane. A layer of 10mm...

Embodiment 2

[0059] Example 2 A Vertical Tube Type Ultrasonic Scanning Device for Detecting Internal Defects of a Square Rubber Block

[0060] In this embodiment, a square rubber block with a size of 150mm x 100mm x 50mm is used as the object to be tested. Most of the structure of the ultrasonic scanning device is the same as that of Embodiment 1, only the following changes are made:

[0061] Since the item to be tested is elastic and its overall thickness is 20mm thicker than that of the square battery in Example 1, the outer walls of the two rollers do not need silicone rubber, and the inner wall of the plexiglass roller is directly in contact with the item to be tested. The deformation makes it pass through the roller gap with a pitch of 49mm.

[0062] The thickness of the item to be tested is relatively thick in the z direction, and it is relatively stable when placed on the transfer belt, so the width of the conveyor belt is changed to 45mm, and its position is raised to be higher th...

Embodiment 3

[0065] Example 3 Horizontal oblique cylinder type ultrasonic scanning device for detecting internal defects of pouch batteries

[0066] Soft-pack lithium-ion batteries are also a common form of battery on the market. The appearance is usually square, but unlike square aluminum-case batteries, the packaging material is aluminum-plastic film, and the interior is usually multi-layer electrode materials manufactured by lamination technology. Diaphragm, collector, soaked by electrolyte. Its thickness is usually less than 15mm, and the edge is a folded structure of aluminum-plastic film, which cannot be placed vertically on the conveyor belt. In order to solve the continuous scanning problem of the soft-packed lithium-ion battery, the invention discloses an oblique cylinder type ultrasonic scanning device.

[0067] Different from the vertical cylinder type ultrasonic scanning device described in Embodiment 1, in the parallel-arranged oblique cylinder type ultrasonic scanning device...

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Abstract

The invention discloses an ultrasonic scanning device, application thereof and a method and belongs to the field of ultrasonic testing. The ultrasonic scanning device comprises at least one pair of cylindrical rollers. Axes of each pair of cylindrical rollers are mutually parallel. Liquid for transmitting ultrasound is contained in each cylindrical roller. When the ultrasonic scanning device works, the pair of cylindrical rollers rotate around own axes, rotation directions are opposite and a to-be-detected object passes between the pair of cylindrical rollers, thereby receiving ultrasonic testing. The ultrasonic scanning device can be applied to the field of lithium ion battery testing. An internal defect and health state of a lithium ion battery can be obtained through obtaining of an ultrasonic image in a detection object. The device provided by the invention is simple in structure, is convenient for use and is low in cost and ingenious in design. A practical supplication effect in the field of the lithium ion battery testing is relatively good.

Description

technical field [0001] The invention belongs to the field of ultrasonic detection, and more specifically relates to an ultrasonic scanning device and its application and method. Background technique [0002] Ultrasound is a sound wave with a frequency higher than 20kHz. It has good directionality, strong penetrating ability, easy to obtain concentrated sound energy, and has a long propagation distance in liquids and solids. It can be used in the field of non-destructive testing and can detect objects to be tested. Bubbles, density fluctuations, cracks, etc. However, its ability to propagate in the air is very poor, especially for ultrasonic waves with a frequency higher than 0.5MHz, which are very severely attenuated in the air, and it is difficult to obtain the required ultrasonic information through air coupling, so it is usually necessary to use a liquid couplant to fill in the ultrasonic waves. Between the transducer and the object to be tested to promote the transmissi...

Claims

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Application Information

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IPC IPC(8): G01N29/28G01N29/275G01N29/06G01N29/04
CPCG01N29/04G01N29/0654G01N29/275G01N29/28G01N29/2493G01N29/11G01N2291/048G01N2291/102G01N29/27G01N29/225G01N2291/2697Y02E60/10H01M10/4285H01M10/0525G01N29/069
Inventor 沈越邓哲黄云辉
Owner 无锡领声科技有限公司
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