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Battery seal online thickness measuring device and method

A thickness measurement and battery technology, applied in measuring devices, optical devices, instruments, etc., can solve the problems of unstable seal flatness, unsuitable detection of soft-packed cells, etc., and achieve the effect of improving detection accuracy and ensuring quality

Inactive Publication Date: 2021-03-26
ZHUHAI COSMX BATTERY CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the detection principle of this patent can be used to detect the thickness of the power hard-shell battery, it is not suitable for detecting the thickness of the seal of the soft-pack battery, because the seal of the soft-pack battery is a multi-layer film structure, and the outermost layer is a transparent layer. Thinner and unstable seal flatness

Method used

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  • Battery seal online thickness measuring device and method
  • Battery seal online thickness measuring device and method

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Embodiment Construction

[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. For the convenience of description, the definitions of directions such as up, down, left, and right in this application are only for the convenience of clearly describing the structure of the device, and do not necessarily It is limited to the actual position of the device in the process of production, use, sales, etc. The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0021] combine figure 1 and figure 2 As shown, the battery seal online thickness measuring device provided in this embodiment includes a bracket assembly 10 , a displacement driving assembly 20 , a cell carrying assembly 30 and a seal thickness measuring assembly 40 . The above components are described in detail below.

[0022] The bracket assembly 10 is used to provide installation positions and sp...

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Abstract

The invention discloses a battery seal online thickness measuring device and method. The thickness measuring device comprises a support assembly, a battery cell bearing assembly and a seal thickness measuring assembly, wherein the battery cell bearing assembly and the seal thickness measuring assembly are arranged on the support assembly. The battery cell bearing assembly comprises a battery cellbearing part for bearing a detected battery cell and a seal pressing part which is in press fit with the battery cell bearing part to press a seal of the detected battery cell, and the battery cell bearing part and the seal pressing part are correspondingly provided with at least one group of detection through grooves at positions where the seal is pressed; the seal thickness measuring assembly comprises an upper light splitting interference type sensor and a lower light splitting interference type sensor which are coaxial in optical axis and oppositely arranged, and the arrangement positionsmeet the condition that a detection laser line of the upper light splitting interference type sensor penetrates through a detection through groove of the seal pressing part to directly irradiate the upper surface of the seal; a detection laser ray of the lower light splitting interference type sensor penetrates through the corresponding detection through groove of the battery cell bearing part todirectly irradiate the lower surface of the seal. According to the invention, the detection efficiency, accuracy and stability of the battery cell seal can be improved.

Description

technical field [0001] The invention belongs to the technical field of lithium battery production, and in particular relates to an online battery seal thickness measuring device and method. Background technique [0002] Soft-pack lithium-ion batteries are composed of positive electrode, negative electrode, separator, electrolyte and outer packaging. The outer packaging is aluminum-plastic film, which wraps the battery cells by heat sealing to form an airtight environment. The single-layer aluminum-plastic film includes a three-layer structure. From the outside to the inside, there are nylon layer, aluminum layer and PP layer. There is an adhesive layer between each two layers. The nylon layer is a translucent layer, and the adhesive layer is a translucent layer. , the aluminum layer is an opaque layer, and the cell seal is formed by fusing two layers of aluminum-plastic film through PP glue. In order to ensure the quality of the seal during the manufacturing process of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
CPCG01B11/0675
Inventor 谷新运黄志伟陈龙云彭宁曾玉祥
Owner ZHUHAI COSMX BATTERY CO LTD
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