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CN-122016784-A - Refrigerant sensor and photodetector

CN122016784ACN 122016784 ACN122016784 ACN 122016784ACN-122016784-A

Abstract

The application provides a refrigerant sensor and a photodetector. The light detector comprises a light detection part, an integrated circuit chip and a packaging part, wherein the light detection part can generate an electric signal under the irradiation of light, the electric signal can change along with the change of the concentration of a refrigerant, the integrated circuit chip is electrically connected with the light detection part and can process the electric signal, the packaging part comprises a switching part, the light detection part and the integrated circuit chip are respectively and electrically connected to the switching part, the switching part is electrically connected with a circuit board, and the light detection part and the integrated circuit chip are both accommodated in the packaging part. In the refrigerant sensor and the light detector provided by the application, the light detection part and the integrated circuit chip are both accommodated in the packaging part, so that the influence of the outside on the electric signal processing is reduced.

Inventors

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Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260512
Application Date
20250226
Priority Date
20241111

Claims (11)

  1. 1. A refrigerant sensor, which comprises a sensor body, characterized by comprising the following steps: A light source (10), the light source (10) being capable of emitting light; A light detector (100), said light detector (100) being capable of receiving said light emitted by said light source (10), and A circuit board (110), the light source (10) and the light detector (100) are electrically connected with the circuit board, Wherein the light detector (100) comprises: A light detection unit (1), wherein the light detection unit (1) is capable of generating an electrical signal under irradiation of the light, and the electrical signal is capable of changing with the change of the concentration of the refrigerant; An integrated circuit chip (3), the integrated circuit chip (3) being electrically connected to the light detection section (1), the integrated circuit chip (3) being capable of processing the electrical signal, and The packaging part (4), packaging part (4) include switching portion (7), photodetection portion (1) with integrated circuit chip (3) electric connection respectively to switching portion (7), switching portion (7) with circuit board (110) electric connection, photodetection portion (1) with integrated circuit chip (3) all hold in within packaging part (4).
  2. 2. The refrigerant sensor according to claim 1, characterized in that it comprises a conditioning module electrically connected to the light detection portion (1), said conditioning module being able to condition the electrical signal; the conditioning module comprises a first conditioning part and a second conditioning part, and at least one of the first conditioning part and the second conditioning part is integrated in the integrated circuit chip (3).
  3. 3. The refrigerant sensor according to claim 1 or 2, wherein the photodetection portion (1) is a thermopile, and the physical quantity is a potential difference.
  4. 4. The refrigerant sensor according to claim 1 or 2, wherein the switching portion (7) includes a main body portion (71) and an electrical switching portion (72), the electrical switching portion (72) includes a conductive material, the electrical switching portion (72) penetrates the main body portion (71) in a thickness direction of the switching portion (7), the electrical switching portion (72) includes a first switching end (721) and a second switching end (722), and the first switching end (721) and the second switching end (722) are located on both sides of the main body portion (71) in a height direction of the photodetector (100), respectively; The first switching end (721) is physically and electrically connected to the light detection portion (1) or the integrated circuit chip (3), and the second switching end (722) is physically and electrically connected to the circuit board (110).
  5. 5. The refrigerant sensor as set forth in claim 4, wherein the switching portion (7) is a silicon switching board, the packaging portion (4) includes a light filtering portion (2), the light filtering portion (2) is connected with the switching portion (7), the light filtering portion (2) and the switching portion (7) are located on the same side of the light detecting portion (1) along the height direction of the light detector (100), and the light filtering portion (2) and the switching portion (7) are located on the same side of the integrated circuit chip (3); A plane perpendicular to the height direction of the light detector (100) is defined as a projection plane, and the orthographic projection of the light detection part on the projection plane is at least partially overlapped with the orthographic projection of the light filtering part (2) on the projection plane along the height direction of the light detector (100).
  6. 6. The refrigerant sensor as claimed in claim 4, characterized in that said adapter (7) is a glass adapter plate, said adapter (7) comprising a filtering portion (2); A plane perpendicular to the height direction of the light detector (100) is defined as a projection plane, and the orthographic projection of the light detection part on the projection plane is at least partially overlapped with the orthographic projection of the light filtering part (2) on the projection plane along the height direction of the light detector (100).
  7. 7. The refrigerant sensor according to claim 6, wherein the main body portion (71) is glass, the filter film is provided on a surface of the main body portion (71), and the filter portion (2) includes the filter film.
  8. 8. The refrigerant sensor as claimed in any one of claims 5-7, characterized in that the light detection section (1) comprises a first light detection section (11) and a second light detection section (12), the first light detection section (11) and the second light detection section (12) being electrically connected to the integrated circuit chip (3), respectively; The optical filter unit (2) comprises a first optical filter unit (21) and a second optical filter unit (22), wherein the first optical filter unit (21) can be used for selecting light in a first wavelength range, the second optical filter unit (22) can be used for selecting light in a second wavelength range, the first wavelength range is not overlapped with the second wavelength range, the first optical detector unit (11) is at least partially arranged in alignment with the first optical filter unit (21), and the second optical detector unit (12) is at least partially arranged in alignment with the second optical filter unit (22).
  9. 9. The refrigerant sensor according to claim 8, wherein the circuit board (110) has an entrance hole (111) penetrating along a thickness direction of the circuit board (110), the entrance hole (111) includes a first entrance hole (113) and a second entrance hole (114), the first filter portion (21) is disposed in alignment with the first entrance hole (113), and the second filter portion (22) is disposed in alignment with the second entrance hole (114).
  10. 10. The refrigerant sensor as claimed in any one of claims 1,2, 5-7 and 9, characterized in that said encapsulation (4) has a cavity (400) in which both said light detection portion (1) and said integrated circuit chip (3) are located; At least part of the switching part, at least part of the first light filtering part (21) and at least part of the first light filtering part (21) are cavity walls corresponding to the accommodating cavity.
  11. 11. A light detector, comprising: A light detection unit (1), wherein the light detection unit (1) is capable of generating an electrical signal under irradiation of the light, and the electrical signal is capable of changing with the change of the concentration of the refrigerant; An integrated circuit chip (3), the integrated circuit chip (3) being electrically connected to the light detection section (1), the integrated circuit chip (3) being capable of processing the electrical signal, and The packaging part (4), packaging part (4) include switching portion (7), photodetection portion (1) with integrated circuit chip (3) electric connection respectively to switching portion (7), switching portion (7) with circuit board (110) electric connection, photodetection portion (1) with integrated circuit chip (3) all hold in within packaging part (4).

Description

Refrigerant sensor and photodetector Technical Field The application relates to the technical field of sensing, in particular to a refrigerant sensor and a light detector. Background In the related art, the refrigerant sensor comprises a light source, a light detector and a circuit board assembly, wherein the light detector comprises a light detection part, and when light emitted by the light source irradiates the light detection part, the light detection part can generate change and output an electric signal. The circuit board assembly comprises a circuit board and a plurality of electronic components arranged on the circuit board, the optical detector is electrically connected with the circuit board, and the circuit board assembly processes, such as conditioning, storing, calculating and the like, the electric signals output by the optical detector, so that the sensor can detect the gas. In the related art, an electronic device for processing an electric signal in a refrigerant sensor is mounted on a circuit board, the circuit board is positioned in a cavity communicated with the outside of the refrigerant sensor, the outside of the refrigerant sensor easily influences the processing of the electric signal, and meanwhile, the electric connection between elements needs to be considered. Disclosure of Invention The application provides a miniaturized refrigerant sensor. The refrigerant sensor provided by the first aspect of the application comprises a light source, a light detector and a circuit board, wherein the light source (10) can emit light, the light detector can receive the light emitted by the light source, and the light source and the light detector are electrically connected with the circuit board. Wherein the light detector comprises: A light detection unit that generates an electrical signal that can be changed by a change in the concentration of the refrigerant when the light is irradiated; An integrated circuit chip electrically connected to the light detection section, the integrated circuit chip capable of processing the electric signal, and The packaging part comprises a switching part, the light detection part and the integrated circuit chip are respectively and electrically connected to the switching part, the switching part is electrically connected with the circuit board, and the light detection part and the integrated circuit chip are contained in the packaging part. The refrigerant sensor provided by the first aspect of the application comprises a light detector, wherein the light detector comprises a light detection part, an integrated circuit chip and a packaging part, the integrated circuit chip is electrically connected with the light detection part and can process electric signals of the light detection part, the packaging part comprises a switching part, the light detection part and the integrated circuit chip are respectively electrically connected to the switching part, the switching part is electrically connected with a circuit board, and the light detection part and the integrated circuit chip are both accommodated in the packaging part, so that the influence of the outside of the refrigerant sensor on the electric signal processing is reduced. The photodetector provided in the second aspect of the present application comprises: A light detection unit that generates an electrical signal that can be changed by a change in the concentration of the refrigerant when the light is irradiated; An integrated circuit chip electrically connected to the light detection section, the integrated circuit chip capable of processing the electric signal, and The packaging part comprises a switching part, the light detection part and the integrated circuit chip are respectively and electrically connected to the switching part, the switching part is electrically connected with the circuit board (110), and the light detection part and the integrated circuit chip are contained in the packaging part. The light detector provided by the second aspect of the application comprises a light detection part, an integrated circuit chip and a packaging part, wherein the integrated circuit chip is electrically connected with the light detection part and can process an electric signal of the light detection part, the packaging part comprises a switching part, the light detection part and the integrated circuit chip are respectively electrically connected to the switching part, the switching part is electrically connected with the circuit board, and the light detection part and the integrated circuit chip are both accommodated in the packaging part, so that the influence of the outside of the light detector on the electric signal processing is reduced. Drawings FIG. 1 is a schematic perspective view of an optical gas sensor according to an embodiment of the present application; FIG. 2 is a schematic cross-sectional view of a first embodiment of a light detector included in the optical gas sensor of FIG. 1; FI