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Novel sheet-type oxygen sensor

An oxygen sensor, chip technology, applied in the field of sensors, can solve the problems of inconvenience, dry crack printing of the insulating layer, etc., and achieve the effects of reducing dry cracks, increasing adhesion, and alleviating different coefficients of thermal expansion.

Inactive Publication Date: 2015-01-21
苏州衡业新材料科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to solve the problems of cracked insulating layer and inconvenient printing, the process is greatly simplified, and the product performance is good

Method used

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Embodiment approach

[0024] Figure 1-Figure 3 An embodiment of a novel chip oxygen sensor of the present invention is shown: it includes a sensing element layer 1, an air channel layer 2 and a heating layer 3 arranged in sequence from top to bottom, and the heating layer 3 consists of a heating substrate layer. 4, and the heating electrode insulating layer 5 arranged above the heating substrate layer 4 is composed, the heating electrode insulating layer 5 includes upper and lower insulating sheets 51, 52 and a heater sandwiched between the upper and lower insulating sheets 51, 52 Heating electrode 53, an upper transition layer 54 is also provided on the top of the upper insulating sheet 51, and a lower transition layer 55 is also provided below the lower insulating sheet 52; the sensitive element layer 1 is composed of the sensitive element layer body 11, outer The electrode 12 and the inner electrode 13 are formed, the outer electrode 12 is arranged on the upper surface of the sensitive element ...

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Abstract

Disclosed is a novel sheet-type oxygen sensor including, in a top-to-bottom successively arranging manner, a sensitive element layer, an air path layer and a heating layer, wherein the heating layer is composed of a heating substrate layer and a heating electrode insulating layer arranged above the heating substrate layer. The heating electrode insulating layer comprises an upper insulating sheet and a lower insulating sheet and a heating electrode clamped therebetween. An upper transition layer is arranged above the upper insulating sheet and a lower transition layer is arranged below the lower insulating sheet. In the sheet-type oxygen sensor, the insulation layers and the transition layers are added so that drying times during printing are reduced and processing time is saved. Meanwhile, a problem of drying crack caused by overmuch printing layers is solved. By means of the addition of the transition layers, a binding property between the insulating layers and zirconium oxide layers are enhanced so that deformation and cracking due to different thermal-expansion coefficients of the two different materials during sintering, thereby greatly improving product yield.

Description

technical field [0001] The invention relates to a sensor, in particular to a chip oxygen sensor used for detecting the oxygen concentration in the exhaust gas of automobiles. Background technique [0002] With the increasingly serious environmental pollution caused by automobile exhaust, saving fuel and reducing the pollution of automobile exhaust is becoming an important issue at present. At present, it is mainly through the oxygen sensor to realize the detection of the oxygen concentration of the exhaust gas of the motor vehicle and the judgment of the combustion condition, so as to achieve the purpose of saving fuel and reducing the emission of exhaust gas. [0003] Oxygen sensors mainly have two structures: tube type and chip type. Due to the advantages of fast response time and other advantages of the chip structure, it has become the main form of current oxygen sensor development. At present, the chip structure is mainly composed of three layers of zirconia, the upper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/409
Inventor 田慎重许金鑫徐鹏王一平王春华
Owner 苏州衡业新材料科技有限公司
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