CN117280199A - Detection assembly, manufacturing method thereof, detection device and detection system - Google Patents

Detection assembly, manufacturing method thereof, detection device and detection system Download PDF

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Publication number
CN117280199A
CN117280199A CN202280030694.6A CN202280030694A CN117280199A CN 117280199 A CN117280199 A CN 117280199A CN 202280030694 A CN202280030694 A CN 202280030694A CN 117280199 A CN117280199 A CN 117280199A
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CN
China
Prior art keywords
layer
detected
sub
detection
assembly
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CN202280030694.6A
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Chinese (zh)
Inventor
裴宝有
瞿飞
何佳宁
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Publication of CN117280199A publication Critical patent/CN117280199A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Abstract

A detection assembly (100), a method of manufacturing the same, a detection device (1000), and a detection system (2000) are provided. The detection component (100) comprises a base layer (1) and a reaction layer (2). The base layer (1) comprises a first portion (11) and a second portion (12) connected to each other, the first portion (11) being configured to be in contact with the object to be detected such that the object to be detected diffuses from the first portion (11) in the direction of the second portion (12). The reaction layer (2) is arranged on the surface of the first part (11), the first part (11) points to the second part (12), the reaction layer (2) comprises a plurality of sub-layers (20) which are arranged at intervals, each sub-layer (20) is configured to sequentially react with an object to be detected to generate a reactant, and the reactant is enabled to diffuse to the second part (12), so that the color of the second part (12) is changed. The detection assembly (100) can shorten the detection time and has simple detection process.

Description

Detection assembly, manufacturing method thereof, detection device and detection system Technical Field
The present application relates to the field of detection analysis technology, and more particularly, to a detection assembly, a method of manufacturing the same, a detection device, and a detection system.
Background
In the field of chemical production, in order to ensure the performance of a product, it is generally necessary to detect the content of some components in the product so as to regulate and control the performance of the product to meet the production requirement.
However, the detection time for detecting the content of some components in the product is long, and the detection process is complex.
Disclosure of Invention
The application provides a detection component, a manufacturing method thereof, a detection device and a detection system, which can shorten detection time and have simple detection process.
In a first aspect, embodiments of the present application provide a detection assembly including a base layer and a reaction layer. The base layer includes a first portion and a second portion connected to each other, the first portion being configured to be in contact with the object to be detected, so that the object to be detected diffuses from the first portion toward the second portion. The reaction layer is arranged on the surface of the first part, and comprises a plurality of sub-layers which are arranged at intervals in the direction from the first part to the second part, wherein each sub-layer is configured to sequentially react with an object to be detected to generate a reactant, and the reactant is enabled to diffuse to the second part so as to enable the color of the second part to change.
Therefore, according to the detection component disclosed by the embodiment of the application, the object to be detected can be diffused from the first part to the second part, in the process of diffusing from the first part to the second part, the object to be detected and the sub-layers which are far away from the second part in the plurality of sub-layers are subjected to chemical reaction in advance, the object to be detected after the chemical reaction is diffused to the direction of the second part, and finally the sub-layers which are close to the second part in the plurality of sub-layers are subjected to chemical reaction to generate a reactant, and the reactant has a color different from that of the second part, so that the color of the second part is changed, and the content of the preset component in the object to be detected can be determined by the color of the second part. According to the embodiment of the application, the content of the preset component in the object to be detected is detected through the chemical reaction between the object to be detected and the sub-layer, and the detection process is simple; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
In some embodiments, the base layer comprises a cotton fiber layer and/or a fiberglass layer.
Therefore, the fiber layer in the embodiment of the application has good diffusion capacity, and is beneficial to diffusion of the object to be detected; and facilitates the formation of the reactants on the substrate.
In some embodiments, at least a portion of the surface of the first portion is a planar surface.
From this, the reaction layer of this application embodiment sets up on planar surface, and detection assembly's whole occupation space is less. The diffusion path of the object to be detected on the flat surface is short, which is favorable for the rapid diffusion of the object to be detected, and is suitable for the object to be detected with high activity and rapid reaction.
In some embodiments, at least a portion of the surface of the first portion has a plurality of recesses and a plurality of protrusions protruding relative to the recesses, with the protrusions disposed between two adjacent recesses, wherein the reactive layer is disposed on the plurality of recesses and the plurality of protrusions.
From this, when the reaction layer of this application embodiment sets up in rugged surface, the diffusion route of waiting to detect the thing is longer, is favorable to prolonging the reaction time of waiting to detect the thing to can make the reaction time of waiting to detect thing and reaction layer increase, in order to ensure to take place fully the chemical reaction between waiting to detect thing and the reaction layer, and then improve the accuracy that waits to detect the content of the preset component in the thing. In addition, when the reaction layer is arranged on the rugged surface, the bonding force between the reaction layer and the surface of the first part is stronger, and the reaction layer is not easy to peel off from the first part.
In some embodiments, the first portion includes a first connection and a second connection. The surface of the first connecting portion is provided with a reaction layer. The second connecting portion is connected to one side of the first connecting portion, which is away from the second portion, and the second connecting portion is configured to contact with the object to be detected, so that the object to be detected diffuses from the second connecting portion to the first connecting portion.
From this, this application embodiment sets up the second connecting portion, can directly arrange the second connecting portion in holding the equipment that has the thing to detect, is favorable to detecting the operation, is favorable to expanding the application scope that detects the subassembly.
In some embodiments, the spacing between adjacent two sublayers is 5mm to 10mm; alternatively, 5mm to 8mm.
Therefore, when the distance between two adjacent sublayers meets the range, the risk of interference during chemical reaction between the adjacent sublayers can be reduced, the possibility of mutual doping of compounds between the adjacent sublayers is also reduced, and the space for full reaction of each sublayer can be provided, so that the detection accuracy is improved.
In some embodiments, the analyte comprises a polyol compound; the plurality of sub-layers comprise a first sub-layer and a second sub-layer which are arranged at intervals in the direction from the first part to the second part; the first sub-layer comprises sodium p-toluenesulfonate, citric acid substance or solid oxalic acid; and/or the second sub-layer comprises potassium dichromate or potassium permanganate.
Therefore, the first sub-layer in the embodiment of the application can endow the object to be detected with acidity so as to prepare for subsequent reactions. The second sub-layer continuously reacts to generate reactants on the basis of the reaction between the first layer and the object to be detected, and the initial colors of the reactants are different from those of the second sub-layer, so that the color of the second sub-layer is changed, the second sub-layer continuously diffuses to the second part, and the color of the second part is changed.
In some embodiments, the first sub-layer has a mass of 0.11mg/n to 0.2mg/n, where n represents the number of hydroxyl groups in the polyol.
In some embodiments, the first sub-layer has a thickness of 80 μm to 100 μm.
In some embodiments, the area of the first sub-layer is 90mm 2 ～120mm 2 Optionally 110mm 2 ～120mm 2 。
Therefore, the embodiment of the application can ensure that the first sub-layer and the object to be detected fully react by regulating and controlling the parameters of the first sub-layer.
In some embodiments, the mass of the second sub-layer is 0.3 to 0.4mg/n, where n represents the number of hydroxyl groups in the polyol.
In some embodiments, the second sub-layer has a thickness of 80 μm to 100 μm.
In some embodiments, the second sub-layer has an area of 90mm 2 ～120mm 2 。
Therefore, the embodiment of the application can ensure that the second sub-layer and the object to be detected fully react by regulating and controlling the parameters of the second sub-layer.
In a second aspect, embodiments of the present application provide a detection device including a housing assembly and a detection assembly at least partially disposed within the housing assembly. The detection assembly adopts the detection assembly of any embodiment of the first aspect of the application.
Therefore, the detection process of the embodiment of the application is simple; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
In some embodiments, the housing assembly includes a first housing portion and a second housing portion. The second shell part is connected with the first shell part and is arranged opposite to the first shell part, an installation space with an opening is formed between the second shell part and the first shell part, the installation space is used for arranging the detection assembly, and at least part of the first part protrudes out of at least one of the first shell part and the second shell part through the opening; and/or at least one of the first housing part and the second housing part is provided with a first through hole.
Therefore, at least part of the first part protrudes out of the shell assembly, so that the first part is beneficial to contact with an object to be detected, and the object to be detected can be diffused from the first part to the second part.
The shell component of the embodiment of the application can comprise a first through hole, wherein the first through hole is arranged at least partially opposite to the second part so as to observe the color change of the second part through the first through hole during operation, and the second part is colorimetrically used for determining the content of the preset component in the object to be detected.
In some embodiments, the first housing portion includes a housing body and two extensions protruding from the housing body, the two extensions being disposed opposite each other, wherein at least a portion of the first portion protrudes from the housing body and is located between the two extensions.
Therefore, the extension part of the embodiment of the application can protect the edge of the first part protruding out of the shell body, so that the risk of damaging the first part is reduced.
In some embodiments, at least a portion of the junction of the first housing portion and the second housing portion is recessed to form a snap-fit portion.
Therefore, the clamping part of the embodiment of the application is convenient to form clamping connection with an external component such as the clamping part, and is beneficial to assembly.
In a third aspect, embodiments of the present application provide a detection system comprising a detection assembly according to any of the embodiments of the first aspect of the present application or a detection device according to any of the embodiments of the second aspect of the present application; and the object placing assembly is used for accommodating objects to be detected.
In some embodiments, the storage assembly includes a storage body and a cover. The object placing body comprises an accommodating cavity for accommodating objects to be detected; and the cover part covers the object placing body and comprises a second through hole which is opposite to the detection component, wherein at least one of the object placing body and the cover part comprises a packaging part so as to seal the accommodating cavity, and the detection component can pass through the packaging part through the second through hole and extend into the accommodating cavity.
From this, the encapsulation portion of this application embodiment will hold the chamber and seal to seal structure to the messenger holds the interior waiting of holding the thing of detecting in holding the chamber and is difficult to reveal, and is difficult to take place side reaction with oxygen and/or steam etc. in the external environment, is favorable to guaranteeing waiting to detect the accuracy that the thing detected.
In some embodiments, the encapsulation is an aluminum plastic layer, a polyethylene layer, or a polypropylene layer.
Therefore, the sealing effect of the packaging part is good, and the packaging part is damaged by the detection assembly conveniently, so that the first part of the detection assembly stretches into the accommodating cavity and contacts with the object to be detected.
In some embodiments, the cover portion includes a cover body and a clamping portion protruding toward a geometric center of the second through hole, the detection device includes a housing assembly including a clamping portion, and the clamping portion is used for connecting the clamping portion and is disposed opposite to the clamping portion.
Therefore, the clamping part and the clamping part are matched, and the appearance of the clamping part is matched. When the detection assembly stretches into the accommodating cavity through the second through hole, the clamping part is connected with the clamping part, the detection assembly and the object placing assembly are not easy to loosen, the structure is relatively stable, and the smooth detection is guaranteed.
In a fourth aspect, an embodiment of the present application provides a detection method for detecting a content of a preset component in an object to be detected, where the method includes: providing an object to be detected, and preparing the object to be detected into a solution to be detected; providing a detection assembly, wherein the detection assembly comprises a base layer and a reaction layer, the base layer comprises a first part and a second part which are connected with each other, the reaction layer is arranged on the surface of the first part, and the reaction layer comprises a plurality of sub-layers which are arranged at intervals in the direction from the first part to the second part; the first part is contacted with the solution to be detected, so that the object to be detected in the solution to be detected is diffused from the first part to the second part, and sequentially reacts with the plurality of sublayers to generate a reactant, and the reactant is diffused to the second part to change the color of the second part; and comparing the color of the second part with a preset color set to determine the content of the preset component.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a detection assembly according to some embodiments of the present application;
FIG. 2 is a schematic structural view of a detection assembly according to other embodiments of the present application;
FIG. 3 is a schematic view of the detection assembly shown in FIG. 2 at another angle;
FIG. 4 is a schematic structural view of a detection assembly according to other embodiments of the present application;
FIG. 5 is a schematic view of the detection assembly of FIG. 4 at another angle;
FIG. 6 is a schematic structural diagram of a detection assembly according to other embodiments of the present application;
fig. 7 is a schematic structural diagram of a detection device according to some embodiments of the present disclosure;
FIG. 8 is a schematic structural diagram of a detection device according to other embodiments of the present disclosure;
FIG. 9 is a cross-sectional view of the detection device shown in FIG. 8 taken along line A-A;
FIG. 10 is a schematic diagram of a detection system according to some embodiments of the present disclosure;
FIG. 11 is an exploded view of a detection system according to further embodiments of the present application
FIG. 12 is an exploded view of a storage assembly of the detection system of FIG. 11;
FIG. 13 is a cross-sectional view of the storage assembly of FIG. 12 taken along line B-B;
fig. 14 is a flow chart of a detection method according to some embodiments of the present application.
The figures are not drawn to scale.
The reference numerals are as follows:
100. a detection assembly;
1. a base layer; 11. a first portion; 11a, a concave portion; 11b, a projection; 111. a first connection portion; 112. a second connecting portion; 12. a second portion;
2. a reaction layer; 20. a sub-layer; 21. a first sub-layer; 22. a second sub-layer;
200. a housing assembly; 210. a first housing portion; 211. a first through hole; 212. a housing body; 213. an extension; 220. a second housing portion; 230. an engagement portion; 240. an opening;
1000. a detection device;
300. a storage component; 310. a storage body; 311. a receiving chamber; 320. a cover part; 321. a cover body; 322. a clamping part; 330. a second through hole; 340. a packaging part;
2000. a detection system.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.
In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.
The term "plurality" as used herein refers to more than two (including two).
In the field of chemical production, in order to ensure the performance of a product, it is generally necessary to detect the content of some components in the product so as to regulate and control the performance of the product to meet the production requirement. Next, an example of producing a battery cell will be described.
The battery cell comprises a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer arranged on at least one surface of the positive electrode current collector. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector. The positive electrode active material layer includes a positive electrode active material and a functional auxiliary agent such as a polyhydric alcohol material, which can increase the plasticity of the positive electrode active material layer, improve the binding force between the positive electrode active material layer and the positive electrode current collector, and the like.
The content of the polyalcohol substances is too low to play a good role in plasticity; and too high a content of the polyhydric alcohol substance may cause a decrease in the ratio of the positive electrode active substance, thereby decreasing the electrochemical performance of the secondary battery; and the water absorption property of the positive electrode active material layer may be increased, thereby possibly causing the positive electrode active material layer to be peeled off from the positive electrode current collector, even causing problems such as lithium precipitation. Therefore, it is generally necessary to detect the content of the polyhydric alcohol substances to ensure the performance of the battery cell.
The inventor finds that the related art mainly adopts gas chromatography to detect the polyalcohol substances, and the method generally needs to prepare and analyze the samples, so that the detection time is long, the detection process is complex, and the continuous production of the battery monomers is seriously influenced.
The problems are not only the detection of the polyol substances, but also the detection process of some products in the field of chemical production, wherein the detection time is longer and the detection process is complex.
In view of the above-mentioned problems found by the inventors, the inventors have devised a detection assembly for detecting the content of a predetermined component in an object to be detected. The content of the preset component can be obtained by comparison through the color reaction of the detection component. The detection component is not only suitable for product detection in the field of batteries, but also suitable for other fields of chemical production, such as water quality detection and the like.
Embodiments of the present application are described in detail below with reference to fig. 1 to 14.
[ detection Assembly ]
In a first aspect, embodiments of the present application provide a detection assembly.
As shown in fig. 1, the detection assembly 100 includes a base layer 1 and a reaction layer 2. The base layer 1 comprises a first portion 11 and a second portion 12 connected to each other. The first portion 11 is configured to be in contact with the object to be detected such that the object to be detected diffuses from the first portion 11 in the direction of the second portion 12. The reaction layer 2 is disposed on the surface of the first portion 11, and is directed from the first portion 11 to the second portion 12, where the reaction layer 2 includes a plurality of sub-layers 20 disposed at intervals, and the plurality of sub-layers 20 are configured to sequentially react with the object to be detected and generate a reactant, and make the reactant diffuse into the second portion 12, so as to change the color of the second portion 12. In this context, the X-direction in fig. 1 means the direction from the first portion 11 to the second portion 12.
The detection component 100 in the embodiment of the present application may be used to detect the content of a preset component in a mixed system, where the preset component may be one or more components in the mixed system, for example, the preset component may be a component in the mixed system that affects the performance of the mixed system to a greater extent. The content of the preset component in the embodiment of the application may refer to the mass of the preset component, and may also refer to the mass ratio of the preset component to occupy the to-be-detected object.
The object to be detected can be in various forms. Illustratively, the object to be detected may be in a liquid or solid state. When the object to be detected is in a liquid state, a quantitative object to be detected can be directly dripped into the first part 11 of the detection assembly 100 for detection; or the adsorption characteristic of the detection component 100 is utilized to absorb quantitative detection objects for detection. When the object to be detected is solid, after the object to be detected is dissolved into liquid, the liquid object to be detected is set in the first portion 11 of the detecting assembly 100 for detection. The object to be detected is illustratively a positive electrode slurry or a positive electrode sheet. Taking the to-be-detected object as the positive electrode plate for illustration, the positive electrode plate is placed in a solvent to dissolve the positive electrode active material layer, the positive electrode active material layer is configured as a to-be-detected solution, and then the to-be-detected solution is placed in the detection assembly 100 for detection.
The base layer 1 is a member having a liquid absorbing and diffusing function, for example, a member containing fibers, which facilitates rapid diffusion of a liquid and does not substantially chemically react with an object to be detected to reduce the accuracy of its interference with the detection of the object to be detected.
The base layer 1 comprises a first portion 11 and a second portion 12 connected to each other. The first portion 11 and the second portion 12 may be formed in various manners, and illustratively, the first portion 11 and the second portion 12 may be formed as a unitary structure, i.e., the first portion 11 and the second portion 12 are integrally formed, and there is no distinct boundary between the first portion 11 and the second portion 12. Alternatively, the first portion 11 and the second portion 12 are independently disposed, and the independently disposed first portion 11 and second portion 12 are joined to form the base layer 1.
The base layer 1 includes two surfaces opposed to each other in the thickness direction thereof. The reaction layer 2 may be provided on at least one surface of the base layer 1. Illustratively, the reactive layer 2 is disposed on one surface of the base layer 1; or the reaction layer 2 is provided on both surfaces of the base layer 1. The reaction layer 2 may be formed on the surface of the base layer 1 by a coating process, an imprinting process, or the like.
The reaction layer 2 contains a substance capable of chemically reacting with a predetermined component in the object to be detected. In order to improve the accuracy of detection of a preset component in an object to be detected, the reaction layer 2 is configured to include a plurality of sub-layers 20 that are disposed at intervals. Each sub-layer 20 may contain a different chemical. The object to be detected can sequentially react with the sub-layers 20, a plurality of chemical reactions occur in the detection assembly 100, the object to be detected gradually reacts with the sub-layers 20 close to the second portion 12, and finally a color reaction occurs with the sub-layers 20 in the plurality of sub-layers 20, so that the accuracy of detecting the content of the preset components is ensured.
The sub-layer 20 of the plurality of sub-layers 20 near the second portion 12 can perform a color reaction with the object to be detected to generate a reactant, the reactant can change the color of the base layer 1, the reactant can change the color of the second portion 12 after diffusing into the second portion 12, and the color of the second portion 12 can be compared with a preset color set to determine the content of the preset component in the object to be detected. In this context, a color reaction refers to a color change after the second sub-layer 22 has undergone a chemical reaction, e.g., the second sub-layer 22 is colorless before the reaction, the reactant is red, and the red reactant diffuses into the second portion 12, so that the second portion 12 turns red. Or the second sub-layer 22 before the reaction is yellow, the reactant is red, and the red reactant diffuses into the second portion 12, causing the second portion 12 to turn red. The preset color set may be a preset color chart, and the preset color set includes a correspondence between colors and contents of preset components. Thus, by comparing the color of the second portion 12 with the set of preset colors, the content of the preset components can be determined.
As some examples, as shown in fig. 1 and 2, the plurality of sub-layers 20 may include two sub-layers 20, e.g., the plurality of sub-layers 20 includes a first sub-layer 21 and a second sub-layer 22, the second sub-layer 22 being disposed proximate the second portion 12, the first sub-layer 21 being located on a side of the second sub-layer 22 facing away from the second portion 12. The detecting assembly 100 absorbs the object to be detected, and the object to be detected diffuses from the first portion 11 to the second portion 12, and diffuses to the region position of the first portion 11 corresponding to the first sub-layer 21, and then the object to be detected can chemically react with the first sub-layer 21 to generate an initial product. The preliminary product continues to diffuse to the location of the area of the first part 11 corresponding to the second sub-layer 22, and then the preliminary product is able to chemically react with the second sub-layer 22 to produce a reactant having a different colour than the original second part 12. The reactant continues to diffuse into the second portion 12, the second portion 12 displaying the color of the reactant, the color displayed by the second portion 12 determining the content of the predetermined component. An example of a plurality of sub-layers 20 including a first sub-layer 21 and a second sub-layer 22 is shown in fig. 2.
As other examples, the plurality of sub-layers 20 may include three sub-layers 20. For example, in a direction from the first portion 11 to the second portion 12, the plurality of sub-layers 20 includes a first sub-layer 21, a third sub-layer and a second sub-layer 22 arranged at intervals, the second sub-layer 22 being arranged adjacent to the second portion 12, the first sub-layer 21 being located on a side of the second sub-layer 22 facing away from the second portion 12, the third sub-layer being located between the first sub-layer 21 and the second sub-layer 22. The detecting assembly 100 absorbs the object to be detected, and the object to be detected diffuses from the first portion 11 to the second portion 12, and diffuses to the region position of the first portion 11 corresponding to the first sub-layer 21, and then the object to be detected can chemically react with the first sub-layer 21 to generate an initial product. The primary product continues to diffuse to the location of the area of the first portion 11 corresponding to the third sub-layer, and then the primary product is able to chemically react with the third sub-layer to form a secondary product. The secondary product continues to diffuse to the location of the area of the first portion 11 corresponding to the second sub-layer 22, and then the secondary product is able to chemically react with the second sub-layer 22 to form a reactant having a different color than the original second portion 12. The reactant continues to diffuse into the second portion 12, the second portion 12 undergoes a color change, and the color displayed by the second portion 12 determines the content of the predetermined component.
As still other examples, the plurality of sub-layers 20 may further include four sub-layers 20, five sub-layers 20, etc., and the number of sub-layers 20 is not limited herein, and the number of sub-layers 20 may be flexibly selected according to the production requirements.
According to the detection assembly 100 of the embodiment of the application, the object to be detected can be diffused from the first portion 11 to the second portion 12, in the process of diffusing from the first portion 11 to the second portion 12, the object to be detected and the sub-layer 20, which is away from the second portion 12, of the plurality of sub-layers 20 are subjected to chemical reaction in advance, the object to be detected after the chemical reaction is diffused to the direction of the second portion 12, and the sub-layer 20, which is close to the second portion 12, of the plurality of sub-layers 20 is subjected to chemical reaction, and generates a reactant, which has a color different from that of the second portion 12, so that the color of the second portion 12 is changed, and the content of the preset component in the object to be detected can be determined by the color of the second portion 12. According to the embodiment of the application, the object to be detected and the sub-layer 20 are subjected to chemical reaction so as to detect the content of the preset component in the object to be detected, and the detection process is simple; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
In some embodiments, the base layer 1 may comprise a cotton fiber layer and/or a fiberglass layer. The fiber layer has better diffusion capability and is beneficial to the diffusion of the object to be detected; and facilitates the formation of reactants on the base layer 1.
In the present embodiment, the base layer 1 may be provided in a single-layer or multi-layer structure. Illustratively, the base layer 1 may comprise a cotton fiber layer; or the base layer 1 may comprise a fiberglass layer; still alternatively, the base layer 1 may include a cotton fiber layer and a glass fiber layer, which may be laminated in the thickness direction of the base layer 1.
The base layer 1 in the embodiment of the application includes various structural forms, and the detection duration of the object to be detected and the like can be adjusted by selecting the structural form of the base layer 1.
In some embodiments, as shown in fig. 2 and 3, at least a portion of the surface of the first portion 11 is a flat surface. Illustratively, a portion of the surface of the first portion 11 is a flat surface, or the entire surface of the first portion 11 is a flat surface. The plurality of sub-layers 20 of the reaction layer 2 are disposed on a flat surface, and the overall footprint of the detection assembly 100 is small. The diffusion path of the object to be detected on the flat surface is short, which is favorable for the rapid diffusion of the object to be detected, and is suitable for the object to be detected with high activity and rapid reaction.
In other embodiments, as shown in fig. 4 and 5, at least a portion of the surface of the first portion 11 may be a rugged surface. At least part of the surface of the first portion 11 has a plurality of concave portions 11a and a plurality of convex portions 11b protruding with respect to the concave portions 11a, and a convex portion 11b is provided between two adjacent concave portions 11a, wherein a plurality of sub-layers 20 of the reaction layer are provided on the plurality of concave portions 11a and the plurality of convex portions 11 b.
Illustratively, the entire surface of the first portion 11 is an uneven surface. Alternatively, a part of the surface of the first portion 11 is a flat surface, and the other part is a rugged surface.
When the reaction layer is arranged on the uneven surface, the diffusion path of the object to be detected is longer, and the reaction time of the object to be detected is prolonged, so that the reaction time of the object to be detected and the reaction layer is increased, chemical reaction between the object to be detected and the reaction is ensured to be fully generated, and the accuracy of content detection of preset components in the object to be detected is improved. In addition, when the reaction layer is provided on the uneven surface, the bonding force between the plurality of sub-layers 20 of the reaction layer and the surface of the first portion 11 is stronger, and the reaction layer is less likely to be peeled from the first portion 11.
In some embodiments, as shown in fig. 6, the first portion 11 includes a first connection 111 and a second connection 112. The surface of the first connection portion 111 is provided with a reaction layer 2. The second connection portion 112 is connected to a side of the first connection portion 111 facing away from the second portion 12, and the second connection portion 112 is configured to detect an object to be detected, so that the object to be detected is diffused from the second connection portion 112 to the first connection portion 111.
The second connection portion 112 is not provided with the reaction layer 2, and is mainly used for diffusing the object to be detected to the first connection portion 111 so as to make the reaction layer 2 corresponding to the first connection portion 111 react. The embodiment of the application sets up the second connecting portion 112, can directly arrange the second connecting portion 112 in the equipment that holds the thing that waits to detect, is favorable to detecting the operation, is favorable to expanding the application scope that detects subassembly 100.
Further, the surface of the second connection part 112 may be provided as a flat surface, and the surface of the first connection part 111 may be provided as an uneven surface. Since the surface of the second connection portion 112 is a flat surface, the diffusion path thereof is shorter, the object to be detected can be rapidly diffused to the first connection portion 111 through the second connection portion 112, and the loss of the object to be detected on the second connection portion 112 can be reduced. The surface of the first connection portion 111 is provided as an uneven surface, and the diffusion path of the object to be detected is long, and the object to be detected can sufficiently react with each sub-layer 20 in the reaction layer 2, so that the accuracy of detecting the preset component in the object to be detected can be improved.
Of course, the surfaces of the second connection portion 112 and the first connection portion 111 are each provided as a flat surface; alternatively, the surface of the second connection part 112 may be provided as an uneven surface, and the surface of the first connection part 111 may be provided as a flat surface.
The first connecting portion 111 and the second connecting portion 112 of this application embodiment can be integrated into one piece structure, and first connecting portion 111 and second connecting portion 112 integrated into one piece do not have obvious limit between the two, can reduce the loss of waiting to detect the thing in two junction to improve the detection accuracy. Of course, the first connection part 111 and the second connection part 112 may be separately provided, and then the first connection part 111 and the second connection part 112 are connected.
In the embodiment of the present application, the reaction layer 2 includes a plurality of sub-layers 20 disposed at intervals, in other words, a plurality of sub-layers 20 have a space therebetween. D shown in fig. 6 represents the spacing between adjacent two sublayers 20.
In some embodiments, the spacing between adjacent two sublayers 20 is 5mm to 10mm.
When the distance between two adjacent sublayers 20 satisfies the above range, the risk of interference during chemical reaction between the adjacent sublayers 20 can be reduced, the possibility of mutual doping of compounds between the adjacent sublayers 20 is also reduced, and a sufficient reaction space can be provided for each sublayer 20, thereby improving the detection accuracy. The spacing between adjacent two sub-layers 20 is 5mm to 10mm, and further, the spacing between adjacent two sub-layers 20 may be 5mm to 8mm. Illustratively, the spacing between adjacent two sublayers 20 may be 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10mm, or a combination of any two of the foregoing.
In some embodiments, referring to fig. 6, in a direction from the first portion 11 to the second portion 12, the plurality of sub-layers 20 includes a first sub-layer 21 and a second sub-layer 22 that are disposed at intervals. The second sub-layer 22 is arranged adjacent to the second part 12, the first sub-layer 21 being located on the side of the second sub-layer 22 facing away from the second part 12. Next, an example in which the object to be detected contains a polyol compound will be described.
The first sublayer 21 comprises sodium p-toluenesulfonate, citric acid material or solid oxalic acid. Sodium p-toluenesulfonate and the like can chemically react with the polyalcohol substances to make the polyalcohol substances acidic. In other words, the first sublayer 21 can impart acidity to the object to be detected, providing for subsequent reactions.
The second sub-layer 22 comprises potassium dichromate or potassium permanganate. The substances such as potassium dichromate can undergo oxidation-reduction reaction with acidic polyalcohol substances, and the color of the potassium dichromate is changed. In other words, the second sub-layer 22 continues to react to generate a reactant based on the reaction between the first layer and the object to be detected, and the reactant and the second sub-layer 22 have different initial colors, so that the color of the second sub-layer 22 is changed, and the reactant continues to diffuse to the second portion 12, and the color of the second portion 12 is changed.
In some embodiments, the parameters of the first sub-layer 21 may be adjusted to ensure that the first sub-layer 21 and the object to be detected are sufficiently chemically reacted. Herein, the parameter of the first sub-layer 21 may be at least one of the mass, thickness, and area of the first sub-layer 21. The parameter of the first sub-layer 21 may also be the width or length of the first sub-layer 21, etc.
As some examples, the mass of the first sublayer 21 is 0.11mg/n to 0.2mg/n, optionally 0.2mg/n, where n represents the number of hydroxyl groups in the polyol compound.
As further examples, the thickness of the first sub-layer 21 is 80 μm to 100 μm, alternatively 100 μm.
As still other examples, the area of the first sublayer 21 is 90mm 2 ～120mm 2 Optionally 110mm 2 。
In some embodiments, parameters of the second sub-layer 22 may be adjusted to ensure that the second sub-layer 22 and the object to be detected are sufficiently chemically reacted. Herein, the parameter of the second sub-layer 22 may be at least one of a mass, a thickness, and an area of the second sub-layer 22. The parameter of the second sub-layer 22 may also be the width or length of the second sub-layer 22, etc.
The mass of the second sub-layer 22 is 0.3mg/n to 0.4mg/n, optionally 0.35mg/n, where n represents the number of hydroxyl groups in the polyol compound.
The thickness of the second sub-layer 22 is 80 μm to 100 μm, optionally 90 μm.
The area of the second sub-layer 22 is 90mm 2 ～120mm 2 Optionally 120mm 2 。
[ detection device ]
In a second aspect, embodiments of the present application further provide a detection apparatus.
As shown in fig. 7 to 9, the inspection apparatus 1000 includes a housing assembly 200 and an inspection assembly 100, at least a portion of the inspection assembly 100 being disposed within the housing assembly 200. The detection assembly 100 may employ the detection assembly 100 of any of the embodiments of the first aspect of the present application.
The housing assembly 200 is disposed outside the detecting assembly 100, which can provide protection to the detecting assembly 100 and facilitate the detecting operation. The shape of the housing assembly 200 may be flexibly selected according to the structure of the detection assembly 100, for example, the detection assembly 100 is an elongated layered structure, and the housing assembly 200 may be a cuboid structure with an installation space; alternatively, the sensing assembly 100 may have a cylindrical structure, and the housing assembly 200 may have a cylindrical structure having an installation space.
According to the detection device 1000 of the embodiment of the present application, the object to be detected can diffuse from the first portion 11 to the second portion 12, and in the process of diffusing from the first portion 11 to the second portion 12, the object to be detected respectively chemically reacts with each sub-layer of the detection assembly 100 and generates a reactant, and the reactant has a color different from that of the second portion 12, so that the color of the second portion 12 can be changed, and the content of the preset component in the object to be detected can be determined by the color of the second portion 12, so that the detection process is simple; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
In some embodiments, referring to fig. 7 to 9, the detecting component 100 includes a first portion 11, at least part of the first portion 11 protrudes from the housing component 200, so as to facilitate the first portion 11 contacting with the object to be detected, so that the object to be detected can diffuse from the first portion 11 to the second portion 12.
In other embodiments, the first portion 11 is located within the housing assembly 200, in other words, the first portion 11 may not protrude from the housing assembly 200, and accordingly, the housing assembly 200 has an opening 240, the opening 240 being disposed opposite an end of the first portion 11 that faces away from the second portion 12. The opening 240 may be provided such that the object to be detected can be brought into contact with the first portion 11 from the opening 240, so that the object to be detected is further diffused from the first portion 11 to the second portion 12.
In some embodiments, referring to fig. 7-9, to facilitate viewing the color change of the second portion 12 of the detection assembly 100, the housing assembly 200 may include a first through hole 211, the first through hole 211 being disposed opposite at least a portion of the second portion 12, such that, in operation, viewing the color change of the second portion 12 through the first through hole 211, the second portion 12 is colorimetrically determined to determine the content of the predetermined component in the object to be detected.
In other embodiments, at least a portion of the second portion 12 may protrude from the housing assembly 200, and the second portion 12 may be colorized directly by a color change of the second portion 12 located outside the housing assembly 200 to determine the content of the predetermined component in the object to be detected.
In some embodiments, with continued reference to fig. 7-9, the housing assembly 200 includes a first housing portion 210 and a second housing portion 220. The second housing part 220 is connected to and disposed opposite the first housing part 210, and an installation space having an opening 240 is formed between the second housing part 220 and the first housing part 210, and is used for installing the detection assembly 100. At least a portion of the first portion 11 protrudes through the opening 240 from at least one of the first housing portion 210 and the second housing portion 220; and/or at least one of the first housing part 210 and the second housing part 220 is provided with a first through hole 211.
The first housing portion 210 and the second housing portion 220 may be fixedly connected, so that the overall stability of the housing assembly 200 is high; for example, the first housing portion 210 and the second housing portion 220 are of unitary construction. The first housing portion 210 and the second housing portion 220 may be detachably connected to each other to facilitate replacement of the detection assembly 100. The first housing portion 210 and the second housing portion 220 cooperate to protect the detection assembly 100 to improve the protection capability of the detection assembly 100.
At least part of the first portion 11 protrudes out of the first housing portion 210 through the opening 240, and at least part of the first portion 11 is exposed to the external environment, so as to be in contact with the object to be detected. Alternatively, at least a portion of the first portion 11 protrudes from the second housing portion 220 through the opening 240, and at least a portion of the first portion 11 is exposed to the external environment, so as to be in contact with the object to be detected. Of course, at least a portion of the first portion 11 may protrude through the opening 240 simultaneously from the first housing portion 210 and the second housing portion 220.
The first through hole 211 may be provided in the first housing portion 210, that is, the first through hole 211 penetrates the first housing portion 210 in the thickness direction of the first housing portion 210, and the color of the second portion 12 may be observed through the first through hole 211. Alternatively, the first through hole 211 may be provided in the second housing portion 220, that is, the first through hole 211 penetrates the second housing portion 220 in the thickness direction of the second housing portion 220, and the color of the second portion 12 may be observed through the first through hole 211. Of course, the first through hole 211 may be disposed on both the first housing portion 210 and the second housing portion 220, which is more beneficial for the operator to observe the color of the second portion 12.
In some embodiments, referring to fig. 7 to 9, the first housing portion 210 includes a housing body 212 and two extending portions 213 protruding from the housing body 212, where the two extending portions 213 are disposed opposite to each other, and at least a portion of the first portion 11 protrudes from the housing body 212 and is located between the two extending portions 213.
The two extending portions 213 are disposed opposite to each other along the Y direction, and the two extending portions 213 may protect edges of the first portion 11 protruding from the case body 212 to reduce the risk of the first portion 11 being damaged. Herein, the Y direction is perpendicular to the X direction.
In some embodiments, the second housing portion 220 may be the same structure as the first housing portion 210, but may be different. For example, the second housing portion 220 may include a housing body 212.
In some embodiments, referring to fig. 7 to 9, at least a portion of the junction of the first housing portion 210 and the second housing portion 220 is recessed to form the engaging portion 230. The engaging portion 230 facilitates the engagement with an external member, such as an engaging portion, to facilitate assembly.
[ detection System ]
In a third aspect, embodiments of the present application further provide a detection system.
As shown in fig. 10, the detection system 2000 includes a storage assembly 300. The storage assembly 300 is used for accommodating objects to be detected. The detection system 2000 may also include a detection assembly 100 of any of the embodiments of the first aspect of the present application, or a detection apparatus 1000 of any of the embodiments of the second aspect of the present application.
The storage assembly 300 may be a member having a receiving function, such as a reagent bottle or a reagent kit, and the like, and its structural form is not limited.
According to the detection system 2000 of the embodiment of the present application, the object to be detected is accommodated in the object accommodating component 300, the first portion of the detection component 100 or the detection device 1000 can absorb the object to be detected and enable the object to be detected to diffuse from the first portion to the second portion, in the process of diffusing from the first portion to the second portion, the object to be detected respectively chemically reacts with each sub-layer and generates a reactant, and the reactant has a color different from that of the second portion, so that the color of the second portion can be changed, and the content of the preset component in the object to be detected can be determined by the color of the second portion, and the detection process is simple; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
In some embodiments, referring to fig. 10 to 13, the storage assembly 300 may include a storage body 310 and a cover 320. The storage body 310 includes a receiving chamber 311 for receiving a test object. The cover 320 covers the storage body 310, and the cover 320 includes a second through hole 330 opposite to the detection assembly 100, wherein at least one of the storage body 310 and the cover 320 includes a packaging portion 340 to seal the accommodating cavity 311, and the detection assembly 100 can pass through the packaging portion 340 through the second through hole 330 and extend into the accommodating cavity 311.
The sealing portion 340 may be disposed on the storage body 310, the lid portion 320, or both the storage body 310 and the lid portion 320.
The packaging part 340 seals the accommodating cavity 311 into a sealing structure, so that the object to be detected accommodated in the accommodating cavity 311 is not easy to leak, and is not easy to react with oxygen and/or water vapor in the external environment, and the accuracy of the object to be detected is guaranteed.
In some embodiments, the encapsulation 340 may be an aluminum plastic layer, a polyethylene layer, or a polypropylene layer. The sealing effect of the sealing portion 340 is better, and the detecting assembly 100 is convenient to break the sealing portion 340, so that the first portion 11 of the detecting assembly 100 extends into the accommodating cavity 311 and contacts with the object to be detected.
In some embodiments, the cover 320 includes a cover body 321 and a snap-fit portion 322 protruding toward the geometric center of the second through hole 330. Accordingly, the detection device 1000 includes a housing assembly 200, where the housing assembly 200 includes a locking portion 230, and the locking portion 230 is configured to connect with the locking portion 322 and is disposed opposite to the locking portion 322. The engaging portion 230 is matched with the engaging portion 322 in shape. When the detection assembly 100 stretches into the accommodating cavity 311 through the second through hole 330, the clamping part 230 is connected with the clamping part 322, the detection assembly 100 and the object placing assembly 300 are not easy to loosen, the structure is relatively stable, and the smooth detection is guaranteed.
[ detection method ]
In a fourth aspect, embodiments of the present application further provide a detection method for detecting a content of a preset component in an object to be detected. As shown in fig. 14, the method includes:
s100, providing an object to be detected, and configuring the object to be detected as a solution to be detected.
S200, providing a detection assembly, wherein the detection assembly comprises a base layer and a reaction layer, the base layer comprises a first part and a second part which are connected with each other, the reaction layer is arranged on the surface of the first part, the first part points to the direction of the second part, and the reaction layer comprises a plurality of sub-layers which are arranged at intervals.
S300, the first part is contacted with the solution to be detected, so that the object to be detected in the solution to be detected is diffused from the first part to the second part, and sequentially reacts with the plurality of sub-layers to generate a reactant, and the reactant is diffused to the second part to change the color of the second part.
S400, comparing the color of the second part with a preset color set to determine the content of the preset component.
When the object to be detected is in a liquid state, the object to be detected can be directly used as the solution to be detected. When the object to be detected is solid, the object to be detected can be dissolved in a solvent to form a solution to be detected.
The method adopted by the embodiment of the application has simple detection process; and the chemical reaction can be completed in the diffusion process of the object to be detected, so that the detection time can be shortened.
As shown in fig. 6 and 10, as an embodiment, the detection device 1000 includes a storage component 300, a housing component 200, and a detection component 100, where at least a portion of the detection component 100 is disposed in the housing component 200.
The storage assembly 300 is used for accommodating objects to be detected. The storage assembly 300 may include a storage body 310 and a cover 320. The storage body 310 includes a receiving chamber 311 for receiving a test object. The cover 320 covers the storage body 310, and the cover 320 includes a second through hole 330 opposite to the detecting component 100, where the cover 320 includes an encapsulation 340 to seal the accommodating cavity 311, and the detecting component 100 can pass through the encapsulation 340 through the second through hole 330 and extend into the accommodating cavity 311.
The detection assembly 100 comprises a base layer 1 and a reaction layer 2. The base layer 1 comprises a first portion 11 and a second portion 12 connected to each other. The first portion 11 includes a first connection 111 and a second connection 112. The surface of the first connection portion 111 is provided with a reaction layer 2. The second connection portion 112 is connected to a side of the first connection portion 111 facing away from the second portion 12, and the second connection portion 112 is configured to detect an object to be detected, so that the object to be detected is diffused from the second connection portion 112 to the first connection portion 111. The reactive layer 2 comprises a first sub-layer 21 and a second sub-layer 22. The first sub-layer 21 is located on the side of the second sub-layer 22 facing away from the second part 12. A portion of the second connection portion 112 protrudes from the housing assembly 200.
The detection process is described by taking an object to be detected as a positive pole piece as an example.
Providing a positive electrode plate with preset weight, and placing the positive electrode plate in the accommodating cavity 311 for dissolution. The sodium citrate solution may be previously placed in the accommodating chamber 311, and the sodium citrate solution may function as an activating polyol. And (3) dissolving the positive electrode slurry in the positive electrode plate in a sodium citrate solution, shaking uniformly, and standing to obtain the positive electrode slurry to be detected. The method is characterized in that a positive current collector in the positive pole piece is basically not dissolved, positive slurry coated on the positive pole piece is dissolved to form positive slurry to be detected, and the content of polyalcohol substances in the positive slurry to be detected is detected.
The second connecting portion 112 of the detecting assembly 100 is inserted into the covering portion 320 of the placement component 310, passes through the packaging portion 340 and extends into the accommodating cavity 311 to contact with the positive electrode slurry to be detected. The positive electrode slurry to be detected is diffused from the second connection portion 112 to the first connection portion 111, and when the positive electrode slurry is diffused to the region of the base layer 1 corresponding to the first sub-layer 21, the polyol in the positive electrode slurry to be detected and the first sub-layer 21 undergo a chemical reaction. The first sublayer 21 may be sodium p-methylbenzenesulfonate, which imparts acidity to the polyol in the positive electrode slurry to be tested. Then, the positive electrode slurry to be detected is continuously diffused to the region of the base layer 1 corresponding to the second sub-layer 22, and the polyol given with acidity is subjected to chemical reaction with the second sub-layer 22. The second sub-layer 22 may be potassium dichromate. The polyol and the potassium dichromate undergo oxidation-reduction reaction to generate a reactant, and color change occurs, and the reactant continues to diffuse to the second part 12 due to certain hysteresis of the color change, and when the reactant diffuses to the second part 12, the color of the second part 12 can be compared with a preset color set to determine the content of the polyol.
Illustratively, the housing cavity 311 contains 20ppm sodium citrate solution, the sodium citrate solution height within the housing cavity 311 is 30ml, and after insertion into the second connector 112, the solution height within the housing cavity 311 is raised such that the sodium citrate solution volume in contact with the second connector 112 is 7.0ml as standard. The above steps can make the volume of the measured polyol solution constant, thereby quantitatively detecting the content of the polyol in the positive electrode slurry, and accurately determining the content in combination with the color of the second part 12.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with other technical solutions, which may not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (17)

  1. A detection assembly, comprising:
    a base layer including a first portion and a second portion connected to each other, the first portion being configured to be in contact with an object to be detected so that the object to be detected diffuses from the first portion toward the second portion; and
    the reaction layer is arranged on the surface of the first part and points to the direction of the second part from the first part, the reaction layer comprises a plurality of sub-layers which are arranged at intervals, each sub-layer is configured to react with the object to be detected in sequence and generate a reactant, and the reactant is enabled to diffuse to the second part so as to enable the color of the second part to change.
  2. The detection assembly of claim 1, wherein the base layer comprises a cotton fiber layer and/or a fiberglass layer.
  3. The detection assembly of claim 1 or 2, wherein,
    at least part of the surface of the first portion is a flat surface; or (b)
    At least part of the surface of the first part is provided with a plurality of concave parts and a plurality of convex parts which are protruded relative to the concave parts, the convex parts are arranged between two adjacent concave parts,
    the reaction layer is arranged on the concave parts and the convex parts.
  4. A detection assembly according to any one of claims 1 to 3, wherein the first portion comprises:
    the surface of the first connecting part is provided with the reaction layer; and
    and a second connecting portion connected to a side of the first connecting portion facing away from the second portion, the second connecting portion being configured to be in contact with the object to be detected so that the object to be detected diffuses from the second connecting portion to the first connecting portion.
  5. The detection assembly of any one of claims 1 to 4, wherein a spacing between adjacent two of the sublayers is 5mm to 10mm; alternatively, 5mm to 8mm.
  6. The detection assembly of any one of claims 1 to 5, wherein,
    the object to be detected comprises a polyol compound; the plurality of sub-layers comprise a first sub-layer and a second sub-layer which are arranged at intervals in the direction from the first part to the second part;
    the first sublayer comprises sodium p-toluenesulfonate, citric acid substance or solid oxalic acid; and/or
    The second sub-layer comprises potassium dichromate or potassium permanganate.
  7. The detection assembly of claim 6, wherein,
    the mass of the first sub-layer is 0.11 mg/n-0.2 mg/n, wherein n represents the number of hydroxyl groups in the polyalcohol compound; and/or
    The thickness of the first sub-layer is 80-100 mu m; and/or
    The area of the first sub-layer is 90mm 2 ～120mm 2 。
  8. The detection assembly of claim 6 or 7, wherein,
    the mass of the second sub-layer is 0.3 mg/n-0.4 mg/n, wherein n represents the number of hydroxyl groups in the polyalcohol compound; and/or
    The thickness of the second sub-layer is 80-100 mu m; and/or
    The area of the second sub-layer is 90mm 2 ～120mm 2 。
  9. A detection apparatus, comprising:
    a housing assembly; and
    the detection assembly of any one of claims 1 to 8, disposed at least partially within the housing assembly.
  10. The detection apparatus of claim 9, wherein the housing assembly comprises:
    a first housing portion;
    a second housing part connected with the first housing part and arranged opposite to the first housing part, wherein an installation space with an opening is formed between the second housing part and the first housing part, the installation space is used for arranging the detection assembly,
    wherein at least part of the first portion passes through the opening and protrudes from at least one of the first housing portion and the second housing portion; and/or
    At least one of the first housing portion and the second housing portion is provided with a first through hole.
  11. The detecting device according to claim 10, wherein the first housing portion includes a housing body and two extending portions protruding from the housing body, the two extending portions being disposed opposite to each other,
    wherein at least part of the first part protrudes from the shell body and is positioned between the two extending parts.
  12. The detection apparatus according to claim 10 or 11, wherein,
    at least part of the joint of the first shell part and the second shell part is recessed to form a clamping part.
  13. A detection system, comprising:
    the detection assembly of any one of claims 1 to 8 or the detection device of any one of claims 9 to 12; and
    and the object placing assembly is used for accommodating objects to be detected.
  14. The detection system of claim 13, wherein the stowage assembly comprises:
    the object placing body comprises an accommodating cavity for accommodating the object to be detected; and
    the cover part covers the object placing body and comprises a second through hole which is opposite to the detection component,
    at least one of the storage body and the covering part comprises a packaging part so as to seal the accommodating cavity, and the detection component can pass through the packaging part through the second through hole and extend into the accommodating cavity.
  15. The detection system of claim 14, wherein,
    the packaging part is an aluminum plastic layer, a polyethylene layer or a polypropylene layer.
  16. The detection system according to claim 14 or 15, wherein,
    the cover part comprises a cover body and a clamping part protruding towards the geometric center of the second through hole,
    the detection device comprises a shell assembly, wherein the shell assembly comprises a clamping part, and the clamping part is used for connecting the clamping part and is opposite to the clamping part.
  17. A detection method for detecting the content of a preset component in an object to be detected, the method comprising:
    providing an object to be detected, and configuring the object to be detected into a solution to be detected;
    providing a detection assembly, wherein the detection assembly comprises a base layer and a reaction layer, the base layer comprises a first part and a second part which are connected with each other, the reaction layer is arranged on the surface of the first part, the first part points to the direction of the second part, and the reaction layer comprises a plurality of sub-layers which are arranged at intervals;
    the first part is contacted with the solution to be detected, so that the object to be detected in the solution to be detected is diffused from the first part to the second part, and sequentially reacts with a plurality of sub-layers to generate reactants, and the reactants are diffused to the second part to change the color of the second part;
    And comparing the color of the second part with a preset color set to determine the content of the preset component.
CN202280030694.6A 2022-04-22 2022-04-22 Detection assembly, manufacturing method thereof, detection device and detection system Pending CN117280199A (en)

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US6406922B2 (en) * 1996-03-11 2002-06-18 American Bio Medica Corp. Device for the testing of body fluid samples
US6915919B2 (en) * 2002-11-21 2005-07-12 American Bio Medica Corporation Container closure cap with self-sealing slot
CN106872456A (en) * 2017-02-14 2017-06-20 成都禾钰科技有限公司 Nitrite detection lateral chromatography test paper and preparation method thereof
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