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A two-chamber double-battery nitrogen oxide sensor chip and its preparation method

A sensor chip, nitrogen oxide technology, applied in instruments, scientific instruments, material analysis by electromagnetic means, etc., can solve the problems of complex circuit design, small size, and difficult production, and achieve simple electronic control units and low production costs. Low and save precious metal material effect

Active Publication Date: 2020-06-02
SOOK AUTOMOTIVE COMPONENTS (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complex circuit design and small size, it is difficult to make

Method used

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  • A two-chamber double-battery nitrogen oxide sensor chip and its preparation method
  • A two-chamber double-battery nitrogen oxide sensor chip and its preparation method
  • A two-chamber double-battery nitrogen oxide sensor chip and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the first cast substrate layer 1, the third cast substrate layer 3, the fourth cast substrate layer 4 and the fifth cast substrate layer 5 print corresponding functional layers respectively, and the second flow The extended substrate layer 2 and the third cast substrate layer 3 are punched and filled with organic slurry, and the processed six-layer cast substrate is stacked into an integral green body, which is cut and deglued and sintered to form a single nitrogen oxide sensor chip.

[0033] The front side of the first casting substrate layer 1 is printed with a common external electrode 9, the reverse side of the first casting substrate layer 1 is printed with an inactive electrode 10, the front side of the third casting substrate layer 3 is printed with an active electrode 13, and a diffusion barrier is printed on the surface of the active electrode 13. Layer 12, the inactive electrode 10 and the active electrode 13 are separated by the pu...

Embodiment 2

[0041] The novel nitrogen oxide sensor chip and its preparation method in this embodiment, such as image 3 shown. Except the following circumstances, all the other are with embodiment 1:

[0042] The active electrode 13 is printed with platinum-rhodium paste, wherein the platinum content is 97wt%, and the rhodium content is 3wt%.

[0043] Platinum paste for printing the inactive electrode 10, wherein the platinum content of the functional material is 97wt%, and the gold content is 3wt%.

[0044] A common external electrode 9 is printed on the front side of the first casting substrate layer 1 , an inactive electrode 10 and an active electrode 13 are printed on the back side, and a diffusion barrier layer 12 is printed on the surface of the active electrode 13 . The second casting substrate layer 2 is punched to form a first chamber 8 and a second chamber 11 , and the first chamber 8 and the second chamber 11 are connected by a reserved slit diffusion channel 18 .

[0045] T...

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Abstract

The invention discloses a double-cavity double-battery type nitrogen oxide sensor chip and a preparation method thereof. The double-cavity double-battery type nitrogen oxide sensor chip is characterized in that a common outer electrode and an inactive electrode are correspondingly printed on the front surface and the rear surface of a first tape-casting substrate layer, wherein an active electrodeis printed on the front surface of a third tape-casting substrate layer, and a diffusion barrier layer is printed on the surface of the active electrode; a reference electrode is printed on the frontsurface of a fourth tape-casting substrate layer; a heating resistance is printed on the front surface of a fifth tape-casting substrate layer, and insulation layers are printed at the upper side andthe lower side of the heating resistance; and the heating resistance is connected to a pin on the rear surface of a six tape-casting substrate layer; all tape-casting substrates are overlapped to form a chip blank; the blank is cut into single chip green; single chip green is sintered to obtain the double-cavity double-battery type nitrogen oxide sensor chip. The double-cavity double-battery typenitrogen oxide sensor chip has the characteristics of being simple to manufacture, and low in cost; the prepared nitrogen oxide sensor chip is capable of accurately measuring oxygen content and nitrogen oxide content.

Description

technical field [0001] The invention relates to an automobile exhaust sensor technology, in particular to a two-chamber, double-battery nitrogen oxide sensor chip and a preparation method thereof. Background technique [0002] At present, the exhaust nitrogen oxide sensor chip for heavy-duty vehicles is composed of six layers of zirconia substrates, such as the patented technology of "gas sensor, nitrogen oxide sensor and method for manufacturing gas sensor" (US20090242400) and "correcting nitrogen oxide sensor The method of output signal" (US20080237064) patent technology, the patent technology is composed of three electrochemical oxygen pumps, two chambers, a reference air channel, a heating resistor, lead wires and eight pins, three electric The chemical oxygen pumps are the main pump, the auxiliary pump and the measuring pump respectively. The main pump is in the first chamber, the auxiliary pump and the measuring pump are in the second chamber, and the first chamber and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/407
CPCG01N27/4072G01N27/4074
Inventor 倪立周洋李明亚倪婷孙轩徐晓强谢光远
Owner SOOK AUTOMOTIVE COMPONENTS (JIANGSU) CO LTD
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