Partially sealed pressure-temperature sensor and its manufacturing process

A technology of pressure temperature and sensor, which is applied in the direction of temperature measurement of moving fluid, thermometer, and measurement of fluid pressure, etc. It can solve the problems of pressure module packaging structure, gel potting and sealing instability, and achieve the reduction of sealing requirements and guarantee Consistency, providing reliability and durability effects

Inactive Publication Date: 2009-08-05
SHANGHAI HAIHUA SENSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the aforementioned reasons, the existing technology has relatively large instability in the structure of the packaging structure, gel potting and sealing of the pressure module of the pressure temperature sensor

Method used

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  • Partially sealed pressure-temperature sensor and its manufacturing process
  • Partially sealed pressure-temperature sensor and its manufacturing process
  • Partially sealed pressure-temperature sensor and its manufacturing process

Examples

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Embodiment Construction

[0022] Such as figure 1 and figure 2 As shown, the pressure module 10 includes a substrate 120 , a chip 130 fixed on the substrate 120 , and a gel 110 covering the chip 130 . The substrate 120 is bowl-shaped and made of ceramic molding material. The substrate 120 provides a cavity in which the chip 130 is fixed, and the gel 110 fills the entire cavity. Both the chip 130 and the gel 110 are available in the market, and the gel 110 can completely transfer the air pressure to the chip 130 without attenuating the transferred air pressure. The chip 130 is used for measuring gas pressure, and its electrical pins pass through the bottom of the substrate 130 . Compared with the existing pressure modules, the pressure template 10 has many advantages. Since the chip 130 is accommodated in the cavity provided by the substrate 120, the chip 130 (and its binding wires) can be completely covered with a certain amount of gel 110 , even if the gel 110 has good fluidity, the cavity provide...

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PUM

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Abstract

The invention relates to a pressure temperature sensor which is sealed partially, comprising a pressure module, a temperature module and a shell for supporting the pressure module and the temperature module, wherein the pressure module comprises a baseplate, a chip for detecting air pressure and gel for covering the chip; the baseplate has a shape of a bowl; the chip is arranged in the bowl-shaped core space of the baseplate; and the holding part and the joining part of the shell are isolated in a sealing way. The pressure temperature sensor with the pressure module can enhance the reliability of the embedding and the sealing of gel. The invention can embed gel in a certain quantity and seal local parts of products, thereby being capable of performing supermatic production and enhancing the production efficiency and the performance stability of the products as well.

Description

technical field [0001] The invention relates to a pressure temperature sensor for an automobile engine and its manufacturing process, which includes a pressure module, a temperature module and a housing for supporting the pressure module and the temperature module, and the pressure module includes a substrate, a chip for testing air pressure and The gel used to cover the chip, the casing includes a housing part and a joint part, the temperature module is arranged in the joint part, and the pressure module is arranged in the cavity of the housing part. Background technique [0002] A pressure-temperature sensor for an engine of an automobile includes a temperature module, a pressure module, and a casing, and the temperature module and the pressure module are arranged in the casing. The manufacturing process of the pressure module is to fix the chip used to test the air pressure on a horizontal PCB, and then drop the gel on the chip to package the chip. Due to the good fluidit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00G01K1/00G01K13/02G01K13/024
Inventor 杨永才蔡其明顾咏徵
Owner SHANGHAI HAIHUA SENSOR
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