CN203587569U - Heating plate-type oxygen sensor for automobile - Google Patents
Heating plate-type oxygen sensor for automobile Download PDFInfo
- Publication number
- CN203587569U CN203587569U CN201320584510.9U CN201320584510U CN203587569U CN 203587569 U CN203587569 U CN 203587569U CN 201320584510 U CN201320584510 U CN 201320584510U CN 203587569 U CN203587569 U CN 203587569U
- Authority
- CN
- China
- Prior art keywords
- matrix
- electrode
- basal body
- extension line
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Resistance Heating (AREA)
Abstract
The utility model relates to a heating plate-type oxygen sensor for an automobile. The sensor is formed by a heating base body, a reference gas channel base body and a lead-out wire electrode base body in stacking and sintering manners from bottom to top, wherein the heating base body is orderly provided with a heater base body, a first insulating layer, a heating electrode and a second insulating layer from bottom to top; the first insulating layer, the heating electrode and the second insulating layer are printed on the heater base body through a precision screen printing machine; the lead-out wire electrode base body is orderly provided with an inner electrode layer, an electrode base body, an outer electrode layer and a porous protective layer from bottom to top; the inner electrode layer, the outer electrode layer and the porous protective layer are printed on the electrode base body through the precision screen printing machine. The heating plate-type oxygen sensor for the automobile is high in sensitivity,, good in stability and long in service life, and the response speed on measurement of automobile exhaust is high.
Description
Technical field
The utility model belongs to sensor field, is specifically related to a kind of automobile hot type plate type oxygen sensor.
Background technology
The automobile oxygen potentiometric oxygen sensor that whole world automobile is installed accounts for more than 80%.Oxygen concentration difference type sensor is divided into cast and sheet type sensor.The cylinder structure response time is 30-60S, can not meet more than 3 emission request in state 3 and Europe.The sheet type structural response time, I reached requirement by 15-30S completely.China's automotive oxygen sensor exploitation, search time is short, technology high.Compare and have low-response with U.S. Delphi product with German doctor, stable poor, poor sensitivity etc.I was by 3 years technology, and investigation, studies, test.Finally obtain performance and compare beautiful automobile hot type plate type oxygen sensor abroad.
Utility model content
The sensor that technical problem to be solved in the utility model is to provide has the characteristic of fast response time, good stability and long service life.
Sensor is followed successively by from the bottom up and adds hot basal body, reference gas channel matrix and extension line electrode matrix press folded sintering to form, the described hot basal body that adds is followed successively by well heater matrix from the bottom up, the first insulation course, heating electrode and the second insulation course, described the first insulation course, heating electrode and the second insulation course pass through precision screen printing machine silk-screen on well heater matrix, described extension line electrode matrix is followed successively by inner electrode layer from the bottom up, electrode matrix, outer electrode layer and porous protective layer, described inner electrode layer, outer electrode layer and porous protective layer pass through precision screen printing machine silk-screen at electrode matrix.
The pottery basis chip basal body that described well heater matrix adopting casting slurry forms by high-precision ceramic casting machine, described the first insulation course and the second insulation course are all to adopt Al
2o
3slurry is made, and described heating electrode is made by Pt resistance slurry.
Described inner electrode layer and outer electrode layer are all to adopt Pt electrode slurry to make; the pottery basis chip basal body that described electrode matrix adopts casting slurry to form by high-precision ceramic casting machine; described porous protective layer adopts aluminium oxide to make, the pottery basis chip basal body that described reference gas channel matrix adopts casting slurry to form by high-precision ceramic casting machine.
The described hot basal body that adds can add hot basal body by a plurality of sons and is spliced, described extension line electrode matrix can have by a plurality of sub-extension line electrode matrixs and is spliced, described son adds hot basal body and sub-extension line electrode matrix position is corresponding, described reference gas channel matrix is provided with some air channels, and the corresponding son of described air channel adds hot basal body and sub-extension line electrode matrix position.
The beneficial effects of the utility model: its highly sensitive, motor vehicle emission tail gas is measured fast response time of the utility model, good stability, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Specific implementation method
The utility model provides a kind of manufacturing process of automobile hot type plate type oxygen sensor, it is characterized in that: the method comprises the steps:
Step 1, selects the Y of 5mol
2o
3y with 8mol
2o
3stable Zro
2nanometer powder, carries out ball ground and mixed according to the ratio formulas of 4.2: 1, when mixing ball grinding, adds spreading agent, solvent, bonding agent and plasticiser; Make slurry.
Step 2, casting slurry forms ceramic basic chip basal body by high-precision ceramic casting machine;
Step 3, adopts ceramic basic chip basal body as well heater matrix, by precision screen printing machine, and silk-screen Al on well heater matrix
2o
3the heating electrode layer 0.45um of the insulation course 0.6um of slurry and Pt resistance slurry, adds hot basal body thereby form;
Step 4, adopts ceramic basic chip basal body as reference gas channel matrix, is about to ceramic basic chip basal body and outputs air channel, and reference gas channel matrix is arranged on and adds hot basal body top;
Step 5, adopts ceramic basic chip basal body as electrode matrix, upper at electrode matrix by the electricity level layer 0.37um silk-screen of the porous protective layer 0.50um of alumina slurry and Pt electrode slurry by precision screen printing machine, thus form extension line electrode matrix;
Step 6, by extension line electrode matrix, reference gas channel matrix and add hot basal body and carry out hot pressing lamination; Cut into stand-alone integrated chip blank.
Step 7, and then carry out high temperature sintering, adopt two-step sintering method, obtain integrated chip;
Step 8, by usual ways such as assembling, welding and riveting dresses, makes sensor by the integrated chip obtaining (being oxygen sensor chip).
Further explanation to each above-mentioned step:
1) the ball milling time in step 1 is 22 hours.Viscosity is that between 950-1200Pa.s, its slurry mixes, and curtain coating ceramic diaphragm intensity and toughness is out better.
2) in step 3, adopt ceramic basic chip basal body as well heater matrix, by precision screen printing machine, silk-screen Al on well heater matrix
2o
3the insulation course of slurry is that the heating electrode of 0.6um and Pt resistance slurry is 0.45um, processes 8 simultaneously, thereby form 8, adds hot basal body;
3) step 4, adopts ceramic basic chip basal body as reference gas channel matrix, is about to ceramic basic chip basal body and outputs 8 air channels, and 8 of reference gas channel matrix are arranged on and add hot basal body top;
4) step 5, adopt ceramic basic chip basal body as electrode matrix, by precision screen printing machine, by the porous protective layer of alumina slurry, be the electricity level layer of 0.5um and Pt electrode slurry for 0.37um silk-screen was in the upper while of electrode matrix, be processed to form 8, thereby form 8 electrode matrixs of extension line;
5) step 6, adds hot basal body by 8 extension line electrode matrixs, 8 reference gas channel matrix and 8 and aims at location and carry out lamination hot pressing; Then, 8 are coexisted to build up after hot pressing on matrix, cut into 8 single integrated chip blanks.
6) specific environment of the hot pressing lamination in step 6 require be, pressure is 3Mpa, temperature is 82 degrees Celsius, the time is 180s, pressure is higher, and to airway, distortion causes performance impact, pressure is less than normal causes blow-by, loses efficacy.Temperature drift, on the low sidely causes chip performance unstable to matrix internal solvent and organic substance influence.Time should consider that product is stable, has again production cost.
7) step 7, then keeps flat integrated chip blank and on Zr02 sintered plate, puts into high temperature sintering furnace and carry out high temperature sintering, adopts two-step sintering method, obtains integrated chip;
8) two-step sintering method in step 7 is specially,
A. be first that the speed that heats with 5 ℃/min is increased to 120 ℃, this process is that solvent evaporates is processed;
B. with the speed that heats of 7 ℃/min, be increased to 900 ℃ again, this process is that the first discharge process is that binder removal and organism are processed;
C. the speed that heats with 10 ℃/min is increased to 1550 ℃, and this process is that the second discharge process is ceramic post sintering process;
D. last 10 ℃/min cooling rate is reduced to 1450 ℃, then keep 3 hours, then it is cooling to carry out nature, and this process is for guaranteeing the intact of crystal grain.
For the above-mentioned step of mentioning of the utility model, carry out further explaining orally explanation:
1) utilize 5mol Y
2o
3electric property good, but exist physical strength bad, utilize 8mol Y simultaneously
2o
3electric property is poor.But the feature that physical strength is good.We are through a large amount of tests.Formula according to a certain percentage, according to 4.2
:1 ratio formula mixes, ball milling, curtain coating.Precision manufacture by various operations is processed, and reaches the requirement of the flat automotive oxygen sensor of good hot type, for 5molY
2o
3and 8molY
2o
3, actual 5MolYSZ and the 8MolYSZ that can also adopt other.
2) in order to save the production time, we can adopt well heater matrix is cut into N sub-well heater matrix, electrode matrix cuts into N sub-electrode matrix, reference gas channel matrix is outputed to N air channel simultaneously, for corresponding sub-well heater matrix and sub-electrode matrix, in sintering, sinter sub-well heater matrix splicing into a well heater matrix again, in like manner sinter the splicing of sub-electrode matrix into an electrode matrix, selection for this quantity of N, can choose according to the oneself requirement of actual factory, the utility model is in step 3, four, five, actually in six can choose this numerical value of N=8.
3) there are much relations hot pressing laminated process and pressure, temperature, time, as material and pressure, and temperature, the time does not have accurate proportional control.May be after high temperature sintering, chip warpage is uneven, and gas leakage can not be used at all, the utility model is by Orthogonal Method, and by actual tests, obtaining pressure is 3Mpa, temperature is 82 degree, and the time is that 125s carries out hot pressing lamination, by high temperature sintering, reaches very high-quality lambda sensor integrated chip.
In addition, the invention also discloses a kind of manufacturing process by automobile hot type plate type oxygen sensor of the present utility model and manufacture the automobile hot type plate type oxygen sensor forming,
Sensor is followed successively by from the bottom up and adds hot basal body 1, reference gas channel matrix 2 and extension line electrode matrix 3 press folded sintering to form, the described hot basal body 1 that adds is followed successively by well heater matrix 11 from the bottom up, the first insulation course 12, heating electrode 13 and the second insulation course 14, described the first insulation course 12, heating electrode 13 and the second insulation course 14 pass through precision screen printing machine silk-screen on well heater matrix 11, described extension line electrode matrix 3 is followed successively by inner electrode layer 31 from the bottom up, electrode matrix 32, outer electrode layer 33 and porous protective layer 34, described inner electrode layer 31, outer electrode layer 33 and porous protective layer 34 pass through precision screen printing machine silk-screen at electrode matrix 32.
Sensor provided by the utility model is further explained:
1) well heater matrix 11 adopts the pottery basis chip basal body that casting slurry forms by high-precision ceramic casting machine, and described the first insulation course 12 and the second insulation course 14 are all to adopt Al
2o
3slurry is made, and described heating electrode 13 is made by Pt resistance slurry.
2) inner electrode layer 31 and outer electrode layer 33 are all to adopt Pt electrode slurry to make; the pottery basis chip basal body that described electrode matrix 32 adopts casting slurry to form by high-precision ceramic casting machine; described porous protective layer 34 adopts aluminium oxide to make, the pottery basis chip basal body that described reference gas channel matrix 2 adopts casting slurry to form by high-precision ceramic casting machine.
3) adding hot basal body 1 can add hot basal body by a plurality of sons and be spliced, described extension line electrode matrix 3 can have by a plurality of sub-extension line electrode matrixs and is spliced, described son adds hot basal body and sub-extension line electrode matrix position is corresponding, described reference gas channel matrix 2 is provided with some air channels 21, and 21 pairs of described air channels should heat matrix and sub-extension line electrode matrix position.Here Fig. 1 quite adds the combination of hot basal body, a reference gas passage, a sub-extension line electrode matrix with a son.
Component names for sensor provided by the utility model is corresponding one by one with above-mentioned manufacturing process, but the electrode layer for extension line electrode matrix, due to the demand of its structure, be divided into the inner electrode layer that is arranged on below electrode matrix and the outer electrode layer on electrode matrix.
Automobile hot type plate type oxygen sensor provided by the utility model, it is highly sensitive, and motor vehicle emission tail gas is measured to fast response time, good stability, the characteristic of long service life, this is that motor vehicle emission is met to Guo4. state 5 or Europe 4, Europe 5 requirements.
Claims (4)
1. an automobile hot type plate type oxygen sensor, it is characterized in that: sensor is followed successively by from the bottom up and adds hot basal body (1), reference gas channel matrix (2) and extension line electrode matrix (3) press folded sintering to form, the described hot basal body (1) that adds is followed successively by well heater matrix (11) from the bottom up, the first insulation course (12), heating electrode (13) and the second insulation course (14), described the first insulation course (12), heating electrode (13) and the second insulation course (14) pass through precision screen printing machine silk-screen on well heater matrix (11), described extension line electrode matrix (3) is followed successively by inner electrode layer (31) from the bottom up, electrode matrix (32), outer electrode layer (33) and porous protective layer (34), described inner electrode layer (31), outer electrode layer (33) and porous protective layer (34) pass through precision screen printing machine silk-screen in electrode matrix (32).
2. a kind of automobile hot type plate type oxygen sensor as claimed in claim 1, it is characterized in that: the pottery basis chip basal body that described well heater matrix (11) adopts casting slurry to form by high-precision ceramic casting machine, described the first insulation course (12) and the second insulation course (14) are all to adopt Al
2o
3slurry is made, and described heating electrode (13) is made by Pt resistance slurry.
3. a kind of automobile hot type plate type oxygen sensor as claimed in claim 1; it is characterized in that: described inner electrode layer (31) and outer electrode layer (33) are all to adopt Pt electrode slurry to make; the pottery basis chip basal body that described electrode matrix (32) adopts casting slurry to form by high-precision ceramic casting machine; described porous protective layer (34) adopts aluminium oxide to make, the pottery basis chip basal body that described reference gas channel matrix (2) adopts casting slurry to form by high-precision ceramic casting machine.
4. a kind of automobile hot type plate type oxygen sensor as described in claim 1 or 2 or 3, it is characterized in that: described in add hot basal body (1) and can add hot basal body by a plurality of sons and be spliced, described extension line electrode matrix (3) can have by a plurality of sub-extension line electrode matrixs and is spliced, described son adds hot basal body and sub-extension line electrode matrix position is corresponding, described reference gas channel matrix (2) is provided with some air channels (21), and the corresponding son of described air channel (21) adds hot basal body and sub-extension line electrode matrix position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584510.9U CN203587569U (en) | 2013-09-08 | 2013-09-08 | Heating plate-type oxygen sensor for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584510.9U CN203587569U (en) | 2013-09-08 | 2013-09-08 | Heating plate-type oxygen sensor for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587569U true CN203587569U (en) | 2014-05-07 |
Family
ID=50585470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320584510.9U Expired - Fee Related CN203587569U (en) | 2013-09-08 | 2013-09-08 | Heating plate-type oxygen sensor for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446606A (en) * | 2017-05-30 | 2019-11-12 | 贺利氏先进传感器技术有限公司 | Heater with co-sintering multilayered structure |
-
2013
- 2013-09-08 CN CN201320584510.9U patent/CN203587569U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446606A (en) * | 2017-05-30 | 2019-11-12 | 贺利氏先进传感器技术有限公司 | Heater with co-sintering multilayered structure |
| CN110446606B (en) * | 2017-05-30 | 2022-02-08 | 贺利氏先进传感器技术有限公司 | Heater with co-sintered multilayer structure |
| US11673375B2 (en) | 2017-05-30 | 2023-06-13 | Heraeus Nexensos Gmbh | Heater having a co-sintered multi-layer structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102798653A (en) | Automobile sheet-structured oxygen sensor and its preparation method | |
| CN103175883B (en) | A kind of method for making of chip type wide-area automobile oxygen sensor chip | |
| CN102841121B (en) | Wide-band oxygen sensor chip and manufacturing method therefor | |
| CN102954993A (en) | Oxygen sensor and preparation method thereof | |
| CN104251876A (en) | Novel disc type oxygen sensor and preparation method and detection method thereof | |
| CN108732224B (en) | Preparation method of double-battery sheet type wide-area oxygen sensor | |
| CN106370712A (en) | Zirconium sheet type chip oxygen sensor and preparation method thereof | |
| CN103278545B (en) | Chip-type universal exhaust gas oxygen sensor and manufacturing method thereof | |
| CN102478538B (en) | Planar oxygen sensor and method for producing same | |
| CN101566598A (en) | ZrO2 oxygen sensor for solid state reference partial pressure of oxygen and manufacture method thereof | |
| CN105044189A (en) | Production method of novel limited current type plate oxygen sensor | |
| CN104569108B (en) | A kind of preparation method of chip oxygen sensor | |
| CN103645221B (en) | The filling paste of zirconia base galvanochemistry NOx sensor chip slit and method for making | |
| CN204302219U (en) | A kind of Novel chip-type oxygen sensor | |
| CN104007144B (en) | A kind of Fe2O3 doping strontium titanates lambda sensor and preparation method thereof | |
| CN203587569U (en) | Heating plate-type oxygen sensor for automobile | |
| WO2018064888A1 (en) | Chip type oxygen sensor chip | |
| CN201628699U (en) | Flat-plate oxygen sensor | |
| CN103018283A (en) | Chip type oxygen sensor | |
| US7169724B2 (en) | Alumina sintered body and method for producing the same | |
| CN201757743U (en) | Platy vehicular oxygen sensor outputting wide-area standard signals | |
| CN105044174A (en) | Novel limited current type plate oxygen sensor | |
| CN102183567B (en) | Manufacture method for limiting current type oxygen sensor | |
| CN103837575B (en) | A kind of automobile hot type plate type oxygen sensor and manufacturing process thereof | |
| CN103837575A (en) | Automobile heating type flat plate type oxygen sensor and manufacturing process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20170908 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |