Flange-mounted conductivity sensor with start-stop function

Abstract

The utility model relates to a flange installation type conductivity sensor with a start-stop function, which belongs to the technical field of conductivity sensors and comprises a sensor main body, an electronic connector is arranged above the sensor main body, a main body structure and a temperature sensing area are arranged below the sensor main body, flange plates are arranged on two sides of the sensor main body, electrodes are arranged on the main body structure, and the temperature sensing area is arranged on the temperature sensing area. The length of the portion, protruding out of the main body structure, of the electrode is smaller than 10 mm, a temperature sensing component used for temperature detection is arranged in the temperature sensing area, the conductivity sensor is small in overall height, a flange installation mode is adopted, and the problem of installation space is solved. And the front end adopts a metal PIN needle type electrode, so that the overall length is shortened, and the problem of liquid detection in a narrow space is solved. A whole vehicle control unit or a domain controller is adopted, and the problem of rapid aging caused by long-time energization of the electrodes of the conductivity sensor is solved.

Description

Technical Field

[0001] The utility model relates to a flange-mounted conductivity sensor with a start-stop function, belonging to the technical field of conductivity sensors. Background Art

[0002] With increasingly stringent environmental regulations and the accelerated promotion of carbon neutrality and carbon compliance policies, the demand for new energy vehicles is increasing. Among them, the development of new energy vehicles based on hydrogen fuel cell systems is gradually accelerating. The stack of the hydrogen fuel cell system is particularly sensitive to temperature changes and requires a precisely controlled thermal management system. Coolant is used in this thermal management system for heat conduction. During the heat conduction process, the coolant directly contacts the fuel cell stack. When the conductivity of the coolant exceeds a certain critical value, there is a risk of electrical breakdown. In order to avoid this risk, a specific conductivity sensor is required to monitor the conductivity of the coolant and send an alarm signal when the conductivity exceeds the critical value.

[0003] Traditional conductivity sensors are mainly used in industrial fields and ocean monitoring. The relevant fields have no requirements on the size of the sensor, but more requirements for easy disassembly and handheld transfer for detection. Therefore, traditional conductivity sensors are shaped like a slender pen, use circular electrodes, and adopt a threaded installation method, which requires that the installation space and the area of ​​the liquid to be detected are large enough. However, the automotive system has a compact structure, requiring the sensor to occupy as little space as possible, and the installation structure to be firm and reliable without frequent disassembly and transfer. Therefore, the above-mentioned traditional conductivity sensor in the shape of a pen is contrary to the needs of the automotive system and is not conducive to automotive system integration.

[0004] The existing conductivity sensors still have the following problems: 1. The pen-shaped conductivity sensor adopts a threaded installation method, and the overall height is relatively high, requiring a large installation space, which is not conducive to integration in the automotive system. 2. The traditional conductivity sensor has a long circular electrode integrated at the front end, and the electrode has a long longitudinal length. In order to ensure that the electrode is completely immersed, it is necessary to penetrate a very long distance into the liquid to be detected, requiring a large space in the liquid area to be detected to ensure that the electrode is completely immersed. It is not suitable for installation in space-constrained areas, such as pipeline installation. 3. The traditional conductivity sensor is bound to the system power supply. The start and stop of the sensor depends on whether the sensor is in the power-on state: repeated power on and off is not conducive to the stable operation of the automotive system and the sensor circuit board; the conductivity sensor electrode can only be powered on all the time. After the system is powered on, the electrode will continue to work until the system is powered off. This working logic will seriously accelerate the aging of the electrode, and the electrode needs to be taken out and maintained regularly, otherwise the accuracy will be reduced and the service life will be shortened; in order to ensure the detection accuracy, it needs to be taken out and maintained regularly, so it is crucial to develop a flange-mounted conductivity sensor with start-stop function. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a flange-mounted conductivity sensor with a start-stop function.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A flange-mounted conductivity sensor with a start-stop function comprises a vehicle control unit or a domain controller and a sensor body, wherein an electronic connector is provided on the top of the sensor body, a main structure and a temperature sensing area are provided on the bottom, flanges are provided on both sides, electrodes are provided on the main structure, and the length of the electrodes protruding from the main structure is less than 10 mm, and a temperature sensing component for temperature detection is provided in the temperature sensing area.

[0008] Furthermore, a cover is provided on the top surface of the sensor body, and the cover is connected to the electronic connector by plastic coating.

[0009] Furthermore, the flange is provided with a mounting hole, and the mounting hole is provided with a metal bushing.

[0010] Furthermore, the electrodes are two PIN needle-type metal electrodes.

[0011] Furthermore, the main structure and the sensor body are integrally injection molded.

[0012] Furthermore, the sensor body is provided with a groove for installing a sealing ring.

[0013] Furthermore, the electronic connector has a flat shape.

[0014] 1. Compared with the prior art, the beneficial effects of the utility model are: the conductivity sensor of the present invention has a small overall height and adopts a flange installation method, which solves the disadvantage that the traditional slender pen-shaped conductivity sensor requires a large space during installation.

[0015] 2. The conductivity sensor of the present invention adopts a metal PIN needle electrode at the front end, and the overall length is shortened, and it can be completely immersed in the liquid to be detected by only a very small depth. This solves the disadvantage that the traditional annular electrode requires a large enough liquid area to be detected and is not suitable for liquid detection in a narrow space.

[0016] 3. The conductivity sensor of the present invention adopts a vehicle control unit or a domain controller to quickly and simply control the conductivity sensor electrode to stop or start working by sending a control command, thereby realizing the start-stop function. When the conductivity sensor is powered on, the problem of rapid aging of the conductivity sensor electrode caused by long-term power supply is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a top view of the structure of the utility model.

[0019] Figure 3 It is a left view of the structure of the utility model.

[0020] Figure 4 It is a bottom view of the structure of the utility model.

[0021] Figure 5 It is a rear view of the structure of the utility model.

[0022] Figure 6 This is a structural detection state diagram of the utility model.

[0023] In the figure, 1. sensor body; 2. cover; 3. electronic connector; 4. flange; 5. metal bushing; 6. electrode; 7. main structure; 8. sealing ring; 9. temperature sensing area. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1-Figure 6 As shown, a flange-mounted conductivity sensor with a start-stop function includes a vehicle control unit or a domain controller and a sensor body 1. An electronic connector 3 is provided on the upper part of the sensor body 1, a main structure 7 and a temperature sensing area 9 are provided on the lower part, and flanges 4 are provided on both sides. An electrode 6 is provided on the main structure 7, and the length of the electrode 6 protruding from the main structure 7 is less than 10 mm. A temperature sensing component for temperature detection is provided in the temperature sensing area 9. The length of the electrode 6 protruding from the main structure 7 is less than 10 mm. Combined with the installation method of the flange 4, the overall height is very small and space is saved, avoiding the disadvantage of the prior art that a large space is required. The bottom end of the electrode 3 is inserted into the liquid to be detected, and can be completely immersed, avoiding a large area of ​​the electrode 3 being immersed in the liquid to be detected, which is conducive to application in pipeline installation.

[0026] The top surface of the sensor body 1 is provided with a cover 2, and the cover 2 is connected to the electronic connector 3 by plastic coating. The cover 2 and the sensor body 1 are integrated together by, but not limited to, laser welding to achieve the sealing of the entire sensor structure.

[0027] The flange 4 is provided with a mounting hole, and the mounting hole is provided with a metal bushing 5. The metal bushing 5 is integrated with the flange 4 by riveting or plastic coating, and is used for assisting screw fastening and installation.

[0028] The electrodes 6 are two PIN-type metal electrodes. The electrodes 6 are made of corrosion-resistant stainless steel to ensure that they will not be corroded during their entire life cycle in a coolant environment. The upper parts of the two electrodes 6 are surrounded by a main structure 7.

[0029] The main structure 7 is integrally injection molded with the sensor body 1. The main structure 7 is made of insulating plastic.

[0030] The sensor body 1 is provided with a groove for installing a sealing ring 8. The sealing ring 8 plays a sealing role between the sensor body 1 and the mounting system to prevent the coolant from leaking out.

[0031] The electronic connector 3 is flat in shape, which can save installation space better.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flange-mounted conductivity sensor with a start-stop function, comprising a vehicle control unit or a domain controller and a sensor body (1), characterized in that: An electronic connector (3) is provided above the sensor body (1), a main structure (7) and a temperature sensing area (9) are provided below the sensor body, and flanges (4) are provided on both sides. An electrode (6) is provided on the main structure (7), and the length of the electrode (6) protruding from the main structure (7) is less than 10 mm. A temperature sensing component for temperature detection is provided in the temperature sensing area (9).

2. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The top surface of the sensor body (1) is provided with a cover (2), and the cover (2) is connected to the electronic connector (3) by means of plastic coating.

3. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The flange (4) is provided with a mounting hole, and the mounting hole is provided with a metal bushing (5).

4. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The electrodes (6) are two PIN needle-type metal electrodes.

5. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The main structure (7) and the sensor body (1) are integrally injection molded.

6. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The sensor body (1) is provided with a groove for installing a sealing ring (8).

7. The flange-mounted conductivity sensor with start-stop function according to claim 1, characterized in that: The electronic connector (3) has a flat appearance.

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