CN219675140U - Engine oil pressure and temperature sensor - Google Patents
Engine oil pressure and temperature sensor Download PDFInfo
- Publication number
- CN219675140U CN219675140U CN202223486549.5U CN202223486549U CN219675140U CN 219675140 U CN219675140 U CN 219675140U CN 202223486549 U CN202223486549 U CN 202223486549U CN 219675140 U CN219675140 U CN 219675140U
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- China
- Prior art keywords
- pcb
- base
- pressure
- engine oil
- temperature sensor
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- 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.)
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- 239000010705 motor oil Substances 0.000 title claims abstract description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 241000218202 Coptis Species 0.000 claims abstract description 5
- 235000002991 Coptis groenlandica Nutrition 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000000565 sealant Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides an engine oil pressure temperature sensor, which comprises a shell and a PCB (printed circuit board) arranged in the shell, wherein the shell comprises a base and an upper cover connected to the base, the base is provided with a platform surface for placing the PCB, one side of the platform surface is concave downwards to form a concave cavity, a pressure chip is arranged in the concave cavity, and the pressure chip is connected with the PCB through a gold wire; and a thermistor is further arranged in the base, the thermistor rack is arranged above the pressure chip, and the piezoresistor is connected with the PCB through a gold thread. The beneficial effects of the utility model are as follows: the pressure and the temperature are measured simultaneously, the measurement synchronism is ensured, two parameters are obtained simultaneously, the use of customers is greatly facilitated, particularly when the temperature and the pressure at a plurality of positions are required to be measured, the temperature and pressure integrated structure is adopted, the sensor is firm and durable, the sensor material is saved, the plastic package is adopted for the shell, and the cost performance is higher than that of a common pressure sensor and a temperature sensor.
Description
Technical Field
The utility model belongs to the technical field of pressure sensors, and particularly relates to an engine oil pressure and temperature sensor.
Background
Engine oil pressure and temperature sensors of automobiles are important devices for detecting engine oil pressure and temperature of vehicle engines, and detected data can help control normal operation of the engines.
In the current market, engine oil pressure and temperature sensors of automobiles are mainly monopolized by some developed countries, and the advantages of the foreign sensors compared with some domestic same series products are as follows: the method has the advantages of quick response time, high inspection precision, large working pressure range, wide storage temperature range and the like. However, in China, the development and research progress of the engine oil pressure and temperature sensors of automobiles lag abroad, and many problems are not solved or yet to be researched.
The oil pressure sensor of the automobile is an important device for detecting the oil pressure of the engine of the automobile, and the detected data can help to control the normal operation of the engine. Because the too low pressure of the engine oil can lead to increased friction of the engine, the abrasion degree is increased and the engine oil is accompanied by heating, so that the damage of parts is caused. It can be seen that oil pressure is an important engine parameter that needs to be detected and data transmitted to the information system during vehicle operation, and that an alarm is triggered when the oil pressure is too low a day. The sensor becomes an important device for data acquisition.
In the present day, when oil pressure is detected, a pressure sensor and a temperature sensor are required to be installed every time the pressure and the temperature of liquid or gas in a pipeline are required to be detected, which is very inconvenient, especially in places with limited space.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides an engine oil pressure and temperature sensor.
The aim of the utility model is achieved by the following technical scheme:
the engine oil pressure temperature sensor comprises a shell and a PCB (printed circuit board) arranged in the shell, wherein the shell comprises a base and an upper cover connected to the base, the base is provided with a platform surface for placing the PCB, one side of the platform surface is concave downwards to form a concave cavity, a pressure chip is arranged in the concave cavity, and the pressure chip is connected with the PCB through a gold wire;
and a thermistor is further arranged in the base, the thermistor rack is arranged above the pressure chip, and the thermistor is connected with the PCB through a gold thread.
Preferably, a trapezoid bump is arranged in the concave cavity, and the pressure chip is arranged on the trapezoid bump.
Preferably, an ASIC chip is arranged on the PCB, and the ASIC chip is bonded with the PCB through a gold wire.
Preferably, a sealant groove is formed in the base, and the upper cover is in glued connection with the base.
Preferably, the upper cover is provided with an induction port, a thread groove is machined on the surface of the upper cover, and the thermistor is arranged right below the induction port.
Preferably, the PCB board is connected with the base in an adhesive mode.
Preferably, the base is provided with side wings, the side wings are arranged on two sides of the upper cover, through holes are formed in the side wings, bushings are arranged in the through holes, and integrated injection molding is performed between the bushings and the through holes.
The beneficial effects of the utility model are as follows:
the pressure and the temperature can be measured simultaneously, the measurement synchronism is ensured, two parameters are obtained simultaneously, the use of customers is greatly facilitated, and particularly when the temperature and the pressure at a plurality of places need to be measured, if a separate temperature sensor and a separate pressure sensor are used, the sensors are fully distributed on the pipeline, and the circuit is particularly complex.
The temperature and pressure integrated structure is adopted, the sensor is firm and durable, the sensor material is saved, the shell is in plastic package, and the cost performance is high compared with that of a common pressure and temperature sensor.
Drawings
Fig. 1: the structure of the utility model is schematically shown.
Fig. 2: the top view structure of the utility model is schematically shown after the upper cover is removed.
Description of the embodiments
The utility model discloses an engine oil pressure and temperature sensor, which integrates the double-layer characteristics of a temperature sensor and a pressure sensor, and can measure temperature and pressure.
The combined type PCB is shown in fig. 1-2, and comprises a shell and a PCB 3 arranged in the shell, wherein the shell comprises a base 1 and an upper cover 2 connected to the base 1, the base 1 is provided with a platform surface for placing the PCB 3, and the PCB 3 is in adhesive connection with the base 1.
One side of the platform surface is concave downwards to form a concave cavity 13, a pressure chip 5 is arranged in the concave cavity 13, and the pressure chip 5 is connected with the PCB 3 through gold wires; an ASIC chip 4 is arranged on the PCB 3, and the ASIC chip 4 is bonded with the PCB 3 through a gold wire 41.
Further, a trapezoidal bump 14 is disposed in the cavity 13, and the pressure chip 5 is disposed on the trapezoidal bump 14.
The ASIC chip 4 converts the received physical signal into an electrical signal for accurate data output. And (5) respectively dispensing the adhesive by using the patches and then loading the adhesive. The pressure chip 5 and the thermistor 6 are integrated in the same sensor, and can output pressure signals and temperature signals independently. The pressure sensor selects a ceramic piezoresistive pressure sensor sensitive core with high precision and high stability, and adopts an inlet high-precision instrument amplifying circuit as a post-processing circuit to compensate drift, sensitivity and temperature drift of the sensor, and an ASIC chip converts the pressure of a measured medium into a standard electric signal.
The temperature and pressure integrated structure can measure the pressure and the temperature of the medium at the same point at the same time, and the plastic package structure ensures high cost performance.
The base 1 is internally provided with a thermistor 6, the thermistor 6 is arranged above the pressure chip 5 for sensing engine oil pressure, and the thermistor 6 is connected with the PCB 3 through a gold thread. The thermistor 6 employs a high-precision NTC thermistor, which has a high resistance at low temperature and decreases with an increase in temperature. The thermistor is located the induction port of upper cover, and the induction port outside has thread groove 21, and thread groove 21 can twist in the oil duct of cylinder body, and the thermistor can detect the temperature of engine oil this moment.
The base 1 is provided with a sealant groove 12, and the upper cover 2 is in glued connection with the base 1. The utility model can test, locate and debug chips in the base when the upper cover 2 and the base 1 are packaged, and assemble the upper cover after the test is finished. The method is characterized in that the debugging process is simple, the problem can be found out and can be reversely repaired, and if no problem exists, the upper cover and the base are connected and packaged. An induction port is formed in the upper cover 2, a thread groove 21 is formed in the surface of the upper cover 2, and the thermistor 6 is arranged right below the induction port. The base 1 is provided with side wings 15, the side wings 15 are arranged on two sides of the upper cover 2, the side wings 15 are provided with through holes 11, and bushings are arranged in the through holes 11. And the bushing and the through hole are integrally injection molded. When the utility model is used, the device can be connected with the through hole 11, and also can be connected with related devices through the thread groove 21 on the upper cover.
In the utility model, the wire bonding is carried out with the PCB 3 through the gold wire 41, the wire bonding mode adopts a 4-layer structure alloying wire system, the electrostatic bonding of the silicon/glass ring is completed through an electrostatic bonding experimental device, the annealed gold wire is selected to complete the inner wire bonding, the high-temperature-resistant copper-clad transfer plate is self-made, the Ag-containing high-temperature soldering tin wire is customized, and the key part of the high-temperature-resistant package is completed. Can be well subjected to various complex environments. The gold wire has good electrical property, stable chemical property and strong corrosion resistance.
The packaging structure of the utility model can well play a role in circuit shielding, the EMI (electromagnetic interference) protection technology is better, the EMI characteristic is greatly improved by adopting a filtering measure for test, when the frequency is 300 kHz, the output signal voltage is about 5mV, the voltage is basically close to zero, and the signal attenuation is very obvious.
Finally, it should be noted that: the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
And the above embodiments are only for illustrating the technical solution of the present utility model, not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. Engine oil pressure temperature sensor, its characterized in that: the PCB comprises a shell and a PCB arranged in the shell, wherein the shell comprises a base and an upper cover connected to the base, the base is provided with a platform surface for placing the PCB, one side of the platform surface is concave downwards to form a concave cavity, a pressure chip is arranged in the concave cavity, and the pressure chip is connected with the PCB through a gold wire;
and a thermistor is further arranged in the base, the thermistor rack is arranged above the pressure chip, and the thermistor is connected with the PCB through a gold thread.
2. The engine oil pressure temperature sensor according to claim 1, characterized in that: the concave cavity is internally provided with a trapezoid protruding block, and the pressure chip is arranged on the trapezoid protruding block.
3. The engine oil pressure temperature sensor according to claim 2, characterized in that: an ASIC chip is arranged on the PCB, and the ASIC chip is bonded with the PCB through a gold thread.
4. The engine oil pressure temperature sensor according to claim 3, characterized in that: the base is provided with a sealant groove, and the upper cover is in glued connection with the base.
5. The engine oil pressure temperature sensor according to claim 4, characterized in that: the upper cover is provided with an induction port, the surface of the upper cover is provided with a thread groove, and the thermistor is arranged right below the induction port.
6. The engine oil pressure temperature sensor according to claim 5, characterized in that: the PCB board is connected with the base in an adhesive mode.
7. The engine oil pressure temperature sensor according to claim 6, characterized in that: the base is provided with side wings, the side wings are arranged on two sides of the upper cover, through holes are formed in the side wings, bushings are arranged in the through holes, and integrated injection molding is performed between the bushings and the through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486549.5U CN219675140U (en) | 2022-12-27 | 2022-12-27 | Engine oil pressure and temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223486549.5U CN219675140U (en) | 2022-12-27 | 2022-12-27 | Engine oil pressure and temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219675140U true CN219675140U (en) | 2023-09-12 |
Family
ID=87926410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223486549.5U Active CN219675140U (en) | 2022-12-27 | 2022-12-27 | Engine oil pressure and temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219675140U (en) |
-
2022
- 2022-12-27 CN CN202223486549.5U patent/CN219675140U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |