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Detection method used for cylinder lithium ion battery seal slice test

A technology of lithium ion battery and detection method, which is applied in measurement devices, preparation of test samples, material analysis by optical means, etc., to achieve the effects of high accuracy, improved detection error, and rapid detection

Pending Publication Date: 2018-04-06
DYNABAT NEW ENERGY SCI & TECH CO CLD FUJIAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a test detection method for cylindrical lithium-ion battery sealing section, which overcomes the shortcomings of the inability to detect the sealing of cylindrical lithium-ion batteries in the background technology, and quantitatively evaluates whether the sealing process is reasonable

Method used

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Embodiment Construction

[0024] A cylindrical lithium-ion battery sealing slice test detection method, the purpose is to evaluate whether the cylindrical lithium-ion battery sealing process is reasonable, including:

[0025] Step 1, cutting the mouth of the cylindrical lithium-ion battery, the mouth at least including the upper part of the side wall;

[0026] Step 2: Wrap the cut mouth with instant steel cement, so that the mouth is sealed in the instant steel cement to form a solidified sample; the instant steel cement can quickly bond and bond metal products such as steel, iron, aluminum, etc. Repair, it is in the form of clay before use, no dripping, no flow, non-toxic, odorless, no pollution, fast bonding, after curing, high strength, good hardness, strong temperature resistance, chemical corrosion resistance, non-volatile, no deformation , the bonding effect is durable, and the operation is very convenient to carry; the rapid steel cement is such as the rapid steel cement (PSI) produced and sold ...

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Abstract

The invention discloses a detection method used for a cylinder lithium ion battery seal slice test, comprising the following steps: step 1, cutting off the mouth part of a cylinder lithium ion battery; step 2, wrapping the cut mouth part with a die making material, so that the mouth part is fixedly sealed in the die making material to form a fixedly sealed sample; step 3, cutting the fixedly sealed sample to show up the section of the mouth part; and step 4, observing and detecting the shown-up dimension of the section of the mouth part, and calculating the compressed ratio of a sealing ring of the cylinder lithium ion battery according to the dimension. The detection method has the advantages of being capable of rapidly and accurately obtaining the compressed ratio to calculate the required dimension, for example, the thickness of the sealing ring, then calculating the compressed ratio according to the obtained dimension, and then judging the feasibility of a sealing process accordingto the compressed ratio subsequently, and being rapid and accurate in detection and low in cost.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a detection method for sealing and slicing a cylindrical lithium ion battery. Background technique [0002] With the advancement of science and technology, the application fields of lithium batteries are further expanding. From mobile phone batteries, electric bicycle batteries, to hybrid car batteries, lithium batteries are used everywhere. In these applications, cylindrical power lithium-ion batteries are made of steel sexually sealed. Such as CN102104168B, a cylindrical lithium ion battery, including a battery part and a metal casing surrounding the battery part, the casing includes an open end, a closed end and a side wall between the open end and the closed end, and the side wall has a concave neck close to the open end , an upper part located above the neck and a lower part located below the neck; the battery part contains cells and electrolyte located in the low...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01B11/00G01N1/32G01N1/36
CPCG01B11/00G01N1/32G01N1/36G01N21/84
Inventor 许东才曹虎山张涛张友标
Owner DYNABAT NEW ENERGY SCI & TECH CO CLD FUJIAN
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