A cooling heat exchanger air side flow passage blockage inspection device, heat exchanger and vehicle

Abstract

A kind of cooling heat exchanger air side flow passage blockage inspection device, heat exchanger and vehicle, blockage inspection device includes device body made of insulating material;Guard net, guard net is used to prevent foreign matter from invading the inside of the cooling heat exchanger, it is made of elastic conductive material and is installed in the device body, when guard net intercepts certain foreign matter and is subjected to certain external force, deformation occurs;Detection grid consisting of multiple detection electrodes, detection grid is installed in device body at a distance from guard net and is closer to the inside of heat exchanger than guard net, when guard net occurs certain deformation, it will contact detection grid;Detection mechanism, including signal detection unit and control unit, wherein signal detection unit is connected with detection electrode, for sensing whether guard net contacts detection electrode;Control unit is connected with terminal device.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile parts, and particularly relates to a cooling heat exchanger air side flow passage blockage inspection device, a heat exchanger and a vehicle. BACKGROUND

[0002] In order to pursue low wind resistance, new energy vehicles generally adopt a relatively low front styling, which results in that the cooling heat exchange module of the vehicle head part cannot be vertically installed as originally, and can only be installed in a manner that the cooling heat exchanger module is installed rearward and inclined to the rear of the vehicle. This installation manner inevitably causes the problem that foreign matters intrude and adhere to the heat exchanger during the use of the vehicle. Therefore, in order to avoid the intrusion of foreign matters into the heat exchanger, the prior art generally provides a blocking net on the heat exchanger to intercept foreign matters. However, due to the rear position and inclination of the heat exchanger, ground debris is inevitably accumulated on the surface of the blocking net during the driving of the vehicle, and the foreign matters are difficult to automatically fall from the blocking net due to the angle of the heat exchanger. With a large amount of foreign matters accumulated on the blocking net of the heat exchanger, the heat exchanger is blocked, the heat exchange capacity is reduced, and thus the situations such as high temperature and high pressure of the system and the decrease of air conditioning refrigeration capacity may occur.

[0003] Moreover, the user cannot directly know the blockage of the heat exchanger, and can only indirectly infer or check the components of the vehicle one by one from other related faults of the vehicle to find the abnormality of the heat exchanger, so that the abnormality of the heat exchanger is difficult to be quickly detected.

[0004] Therefore, there is a need for a device capable of instant detection and reminding the user of the blockage of the heat exchanger. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a cooling heat exchanger air side flow passage blockage inspection device, a heat exchanger and a vehicle, which solves the problem that the user cannot timely detect the blockage of the heat exchanger, and the long-time blockage results in the decrease of the heat exchange capacity of the heat exchanger.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A cooling heat exchanger air side flow passage blockage inspection device for checking whether the cooling heat exchanger of a vehicle is blocked, comprising:

[0008] A device body made of an insulating material;

[0009] A protective net for preventing foreign matters from intruding into the interior of the cooling heat exchanger, the protective net being made of an elastic conductive material and installed in the device body, and the protective net being configured to be deformed by an external force;

[0010] A detection grid composed of a plurality of detection electrodes is installed in the device main body at a distance from the protective net and closer to the inside of the cooling heat exchanger than the protective net;

[0011] A detection mechanism including a signal detection unit and a control unit, wherein the signal detection unit is connected with the detection electrodes for sensing whether the protective net contacts the detection electrodes; the control unit is connected with a terminal device;

[0012] When the protective net is deformed and contacts the detection grid, the signal detection unit senses the signal that the protective net contacts the detection electrodes and outputs the signal to the control unit, and the control unit sends the signal to the terminal device.

[0013] As an embodiment of the present application, the signal detection unit is a current sensor.

[0014] As an embodiment of the present application, the blockage checking device further includes:

[0015] A power supply, wherein the positive pole of the power supply is connected with the detection mechanism and the detection grid; the negative pole of the power supply is connected with the protective net,

[0016] When the protective net is deformed and contacts the detection grid, the positive pole of the power supply contacts the negative pole, the current is connected, the current sensor senses the current signal of the connected current and outputs the current signal to the control unit, and the control unit sends the current signal to the terminal device.

[0017] As an embodiment of the present application, the detection grid, the current sensor and the control unit are connected with the positive pole of the power supply of the automobile controller through wires; the protective net is connected with the power supply of the automobile controller and is grounded in the inside of the automobile controller,

[0018] When the protective net is deformed and contacts the detection grid, the positive pole of the power supply of the automobile controller is grounded, the current rises, the current sensor detects the current rising signal and outputs the current rising signal to the control unit after the current exceeds a specified value, and the control unit sends the current rising signal to the terminal device.

[0019] As an embodiment of the present application, the control unit is further connected with a vehicle speed sensor of the automobile, and the vehicle speed sensor is used for outputting a vehicle speed signal to the control unit;

[0020] The specified value is 0.3A;

[0021] The control unit judges whether the current rising signal is sent to the terminal device according to the vehicle speed signal, and outputs the current rising signal as a blockage detection signal to the control unit when the current sensor detects that the current rising value exceeds 0.3A; meanwhile, the control unit receives the vehicle speed signal from the vehicle speed sensor, and analyzes and judges the blockage detection signal and the vehicle speed signal; if the control unit judges that the blockage detection signal is a long-time continuous uninterrupted blockage detection signal, and judges that the vehicle speed signal is a continuous high vehicle speed signal, the blockage detection signal is sent to the terminal device, and the terminal device sends prompt alarm information to the user after receiving the blockage detection signal. That is, the control unit will only send the blockage detection signal to the external terminal device when it judges that the above two signals are continuous.

[0022] As an embodiment of the present application, the detection mechanism is arranged in the automobile controller, and the automobile controller is provided with an interface for connecting the detection grid to the current sensor and connecting the protective net to the power supply of the automobile controller and grounding in the interior of the automobile controller.

[0023] The device body is fixed with a wire harness box, and the connecting wire harness of the protective net and the detection grid is arranged in the wire harness box.

[0024] As an embodiment of the present application, the device body is fixed with a wire harness box, and the detection mechanism is installed in the wire harness box, and the connecting wire harness of the protective net and the detection grid is arranged in the wire harness box.

[0025] As an embodiment of the present application, the elastic conductive material is a stainless steel metal material, and the protective net is a 4-mesh stainless steel metal plain net.

[0026] As an embodiment of the present application, the mesh size of the 4-mesh stainless steel metal plain net is 4-5.5 mm, and the wire diameter size is 1 mm. The 4-mesh stainless steel metal plain net is used as the protective net of the blockage device, which can ensure that the air side flow resistance is not increased, and effectively block foreign matters from being sucked into the cooling heat exchanger.

[0027] As an embodiment of the present application, the device body is composed of a first frame, a second frame and a third frame which can be disassembled and combined.

[0028] The protective net is installed between the first frame and the second frame.

[0029] The detection electrode is installed between the second frame and the third frame.

[0030] To achieve the above-mentioned purposes, the present application also adopts the following technical solutions:

[0031] A heat exchanger comprising the aforementioned air-side flow channel blockage detection device for a cooling heat exchanger.

[0032] To achieve the above objectives, the present invention also adopts the following technical solution:

[0033] A vehicle that includes the aforementioned heat exchanger.

[0034] Compared with the prior art, the cooling heat exchanger air-side flow channel blockage inspection device of the present invention has at least one of the following beneficial effects:

[0035] 1. By detecting whether the protective net is in contact with the detection grille behind it through the signal detection unit, it can immediately determine whether the heat exchanger is blocked. Users can quickly receive information about the heat exchanger blockage, so that the problem of heat exchanger blockage can be solved in the early stage, and the heat exchanger can be prevented from being damaged due to prolonged blockage.

[0036] 2. The protective net is made of elastic conductive material. After being deformed by intercepting foreign objects, it can return to its original shape and can be reused, which indirectly saves the maintenance cost of the device.

[0037] 3. By analyzing the current rise signal and vehicle speed signal before determining whether to send a congestion alarm signal (current rise signal), more accurate alarm signals can be sent, avoiding the sending of erroneous signals and thus improving the user experience. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a front view of a cooling heat exchanger air-side flow channel blockage inspection device according to a specific embodiment of the present invention;

[0040] Figure 2 This is a cross-sectional view of a cooling heat exchanger air-side flow channel blockage inspection device according to a specific embodiment of the present invention;

[0041] Figure 3 This is a circuit diagram of a cooling heat exchanger air-side flow channel blockage detection device according to a specific embodiment of the present invention;

[0042] Figure 4 This is a flowchart of a method for checking blockages in the air-side flow channel of a cooling heat exchanger according to a specific embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100: device main body

[0045] 200: guard net

[0046] 300: detection grid

[0047] 310: detection electrode

[0048] 400: detection mechanism

[0049] 410: current sensor

[0050] 420: control unit

[0051] 430: current module

[0052] 500: wire harness box

[0053] 600: plug DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work under the premise of the present application, belong to the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the orientation words such as "up", "down", "left", "right", "front", "back" generally refer to the up, down, left and right of the device in the actual use or working state, and the specific direction is the direction of the drawing in the drawings.

[0055] It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. And in the following embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0056] With reference to Figure 1 , Figure 2 and Figure 3 , the air side flow passage blocking inspection device of the cooling heat exchanger of a specific embodiment of the present application includes: a device main body 100, a guard net 200, a detection grid 300 composed of a plurality of detection electrodes 310, and a detection mechanism 400.

[0057] The device body 100 is made of insulating material; the protective screen 200 can intercept foreign matters to prevent the foreign matters from invading the inside of the cooling heat exchanger, and is installed in the device body 100; the detection grid 300 is installed in the device body 100 at a distance from the protective screen 200 and closer to the inside of the cooling heat exchanger than the protective screen 200, the detection mechanism 400 includes a signal detection unit and a control unit 420, the signal detection unit is connected with the detection electrode 310, and can sense whether the protective screen 200 contacts the detection electrode 310; the control unit 420 is connected with a terminal device (for example, a car machine or a mobile phone).

[0058] In a specific embodiment, the protective screen 200 intercepts a large amount of foreign matters and is deformed under a certain external force (for example, air pressure when driving), the protective screen 200 contacts the detection electrode 310 after being deformed, the electric signal detection unit of the detection mechanism 400 senses the signal that the protective screen 200 contacts the detection electrode 310 and outputs the signal to the control unit 420, and the control unit 420 sends the signal to the terminal device.

[0059] In a specific embodiment, the protective screen 200 is made of elastic conductive material, which can be stainless steel metal material, and the protective screen 200 is a 4-mesh stainless steel metal plain screen; the mesh size of the 4-mesh stainless steel metal plain screen is preferably 4-5.5 mm; and the wire diameter size is preferably 1 mm. The 4-mesh stainless steel metal plain screen with such specifications is used as the protective screen 200, which can not only ensure that the air side flow resistance of the cooling heat exchanger is not increased, but also effectively block the foreign matters from being sucked into the cooling heat exchanger, and the deformation of the 4-mesh stainless steel metal plain screen in intercepting the foreign matters is elastic deformation, and the 4-mesh stainless steel metal plain screen can restore to the original state after the foreign matters are removed, and can be reused.

[0060] In a specific embodiment, the signal detection unit is a current sensor 410.

[0061] Further, the blockage checking device further includes a power supply (not shown), a positive electrode of the power supply is connected with the detection mechanism 400 and the detection grid 300; and a negative electrode of the power supply is connected with the protective screen 200. In a specific embodiment, the protective screen 200 is deformed and contacts the detection electrode 310, so that the positive electrode and the negative electrode of the power supply are in contact, the current is connected, the current sensor 410 of the detection mechanism 400 senses the current signal of the connected current and outputs the current signal to the control unit 420, and the control unit 420 sends the current signal to the terminal device.

[0062] In an embodiment, the detection grid 300, the current sensor 410 and the control unit 420 are connected to the positive pole of the power supply of the automobile controller through wires; the protective net 100 is connected to the power supply of the automobile controller and is grounded in the interior of the automobile controller. In an embodiment, the protective net 200 is deformed and contacts the detection grid 300, so that the positive pole of the power supply of the automobile controller is grounded, the current rises, the current sensor 410 detects the current rising signal and outputs the current rising signal to the control unit 420 after the current exceeds a specified value, and the control unit 420 sends the current rising signal to the terminal device.

[0063] With reference to the foregoing Figure 1 and Figure 2 In an embodiment, the device body 100 is provided with a wire harness box 500, and the connecting wire harnesses of the protective net 200 and the detection grid 300 are arranged in the wire harness box 500.

[0064] Further, the detection mechanism 400 is arranged in the automobile controller, and the automobile controller is provided with an interface for connecting the detection grid 300 to the current sensor 410 and connecting the protective net 200 to the power supply of the automobile controller and grounding in the interior of the automobile controller. In addition, the wire harness box 500 is further provided with a plug-in connector 600 for connecting the interface, the connecting wire harness of the detection grid 300 is connected to the current sensor 410 through the plug-in connector 600, and the connecting wire harness of the protective net 200 is connected to the power supply of the automobile controller and grounded in the interior of the automobile controller through the plug-in connector 600.

[0065] With reference to the foregoing Figure 3 , a circuit diagram of the cooling heat exchanger air side flow passage blockage inspection device in an embodiment of the present application is shown, the detection mechanism 400 further comprises a current module 430, the current module 430 is connected to the current sensor 410 and the control unit 420, thereby providing current for the detection mechanism 400; the current sensor 410 is connected to the control unit 420, thereby outputting a blockage detection signal (current rising signal) to the control unit 420.

[0066] Further, the detection grid 300 is connected to the current sensor 410 through the plug-in connector 600 and the wire harness; the current sensor 410 is connected to the current module 430; the current module 430 is connected to the positive pole of the 13.5V DC power supply of the automobile controller (KL30 DC+13.5V), and in an embodiment, the current module 430 converts the DC+13.5V into DC+5V suitable for the control unit 420 and the current sensor 410. The power supply of the automobile controller is connected to the protective net through the plug-in connector 600 and the wire harness and is grounded in the interior of the automobile controller. In addition, the control unit 420 is connected to the bus transceiver of the automobile, and the speed signal of the automobile is output to the control unit 420 through the bus transceiver.

[0067] With reference to the foregoing Figure 3 In a specific embodiment, the protective screen 200 intercepts a large amount of foreign matter while the vehicle is in motion, causing the protective screen to be deformed by the air pressure generated during the motion and to contact the detection grid 300, causing the DC+5V of the detection mechanism to be grounded to the vehicle controller, and the current to rise; the current sensor 410 senses the signal of the rising current, and when the current sensor 410 detects that the current rise exceeds a specified value (preferably set to 0.3A), outputs the signal as a blockage detection signal to the control unit 420; in addition, the vehicle speed signal is output to the control unit 420 through the bus transceiver, and the control unit 420 analyzes and judges the blockage detection signal and the vehicle speed signal; if the control unit 420 judges that the blockage detection signal is a long continuous uninterrupted blockage detection signal and the vehicle speed signal is a continuous high vehicle speed signal, the control unit 420 sends the blockage detection signal to the external terminal device through the bus transceiver, and the terminal device sends a prompt alarm information to the user after receiving the blockage detection signal. That is, the control unit 420 will only send the blockage detection signal to the external terminal device when it judges that the above two signals are continuous.

[0068] In a specific embodiment, the vehicle is running on a bumpy road section, and the protective screen is not piled up with foreign matter. The protective screen is hit by stones and other objects in front of the vehicle running direction, causing it to briefly contact the detection grid 300, causing the DC+5V of the detection mechanism to be grounded to the vehicle controller, and the current to rise; the current sensor 410 senses the signal of the rising current after grounding, and outputs the signal as a blockage detection signal to the control unit 420; at this time, the control unit 420 judges that the blockage detection signal is a short intermittent blockage detection signal, and will not output the blockage detection signal to the terminal device.

[0069] In a specific embodiment, the vehicle suddenly accelerates when starting, and the protective screen is not piled up with foreign matter. The protective screen is deformed and briefly contacts the detection grid 300 due to the acceleration of the vehicle, causing the DC+5V of the detection mechanism to be grounded to the vehicle controller, and the current to rise; the current sensor 410 senses the signal of the rising current after grounding, and outputs the signal as a blockage detection signal to the control unit 420; at this time, the control unit 420 judges that the blockage detection signal is a short intermittent blockage detection signal, and will not output the blockage detection signal to the terminal device.

[0070] In a specific embodiment, the device body 100 is composed of a first frame, a second frame and a third frame which can be disassembled and combined; the protective screen 200 is installed between the first frame and the second frame; the detection electrode 310 is installed between the second frame and the third frame, thereby facilitating device maintenance.

[0071] With reference to the foregoingFigure 4 In a specific embodiment, the clogging detection device detects clogging of the heat exchanger according to the following steps:

[0072] S1: The protective net 200 intercepts a large amount of foreign matter;

[0073] S2: During the acceleration of the vehicle, the protective net 200 deforms due to air pressure and contacts the detection grid 300;

[0074] S3: The common ground of the positive electrode of the power supply of the automobile controller rises in current;

[0075] S4: The current sensor 410 of the detection mechanism 400 senses the current rise signal;

[0076] S5: When the current rise value exceeds 0.3A, the current sensor 410 outputs the current rise signal to the control unit 420;

[0077] S6: The control unit 420 receives the vehicle speed signal output by the vehicle speed sensor;

[0078] S7: The control unit 420 determines whether the current rise signal is a continuous current rise signal and whether the vehicle speed signal is a continuous high-speed signal;

[0079] S8: If so, the control unit 420 outputs the clogging detection signal (current rise signal) to the terminal device;

[0080] S9: The terminal device sends a prompt alarm information to the user;

[0081] S10: If not, the detection is ended.

[0082] Further, the embodiment of the present specification also provides a heat exchanger comprising the cooling heat exchanger air side flow passage clogging detection device in the above embodiment.

[0083] Further, the embodiment of the present specification also provides a vehicle comprising the heat exchanger in the above embodiment.

[0084] The cooling heat exchanger air side flow passage clogging detection device of the embodiment of the present application has the following beneficial effects:

[0085] 1. By only judging the current signal after the protective net 200 contacts the detection grid 300 behind it, whether the heat exchanger is clogged can be determined, and the user can quickly receive information about the clogging of the heat exchanger, so that the problem of heat exchanger clogging can be solved early, and the heat exchange capacity of the heat exchanger can be prevented from being reduced or even damaged due to long-term clogging of the heat exchanger;

[0086] 2. The protective screen 200 is a 4-mesh stainless steel metal plain screen made of stainless steel metal material. Using the 4-mesh stainless steel metal plain screen as the protective screen 200 can not only ensure that the air side flow resistance of the cooling heat exchanger is not increased, but also effectively prevent foreign matters from being sucked into the cooling heat exchanger, and the deformation of the 4-mesh stainless steel metal plain screen in intercepting foreign matters is elastic deformation, and the 4-mesh stainless steel metal plain screen can restore to the original state after the foreign matters are removed, so that the maintenance cost of the device is indirectly saved.

[0087] 3. By analyzing and judging the blockage detection signal (current rising signal) and the vehicle speed signal, and then judging whether to output the blockage alarm signal to the terminal device, a more accurate alarm signal can be sent, the occurrence of false alarm can be effectively avoided, and the user experience is reduced.

[0088] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

[0089] In the description herein, many specific details are provided, such as examples of components and / or methods, to provide a thorough understanding of embodiments of the present application. Persons skilled in the art will recognize, however, that the embodiments of the present application can be practiced without one or more of the specific details. In other instances, well-known structures, materials, or operations are not shown or described in detail in order to avoid obscuring aspects of embodiments of the present application.

[0090] Reference throughout this specification to "an embodiment", "embodiment", or "specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application and is not necessarily included in all embodiments. Thus, the appearances of the phrase "in one embodiment", "in an embodiment", or "in specific embodiments" in various places in this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the application can be combined in any suitable manner in one or more other embodiments. It is understood that other variations and modifications of the applications described and illustrated herein can be made based on the teachings herein, and are therefore within the scope of the application.

[0091] It should also be understood that one or more of the elements illustrated in the drawings / figures can also be implemented in a more separated or integrated manner, or even removed in certain cases, as is useful in accordance with a particular application. It is also possible in some instances that one or more elements could be provided in a singular form of a plurality and that one or more elements could be provided in a multiple form of a singular. Further, elements shown as separate can or can not be separate. The elements can be provided in other combinations of hardware and / or software.

[0092] Furthermore, the term "or" as used herein is generally intended to mean "and / or" unless otherwise indicated. Combinations of components or steps will also be perceived as being perhaps apparent to the skilled artisan upon consideration of this document.

[0093] As used in the description of the application and the following claims, the terms "a", "an" and "the" including their compounds, mean "one or more" unless specified otherwise. Also, as used in the description of the application and the following claims, the term "in" includes "in" and "on" unless specified otherwise.

[0094] The above description of the illustrated embodiments of the application (including what is in the Abstract) is not intended to be exhaustive or to limit the application to the precise forms disclosed. While specific embodiments of, and examples for, the application are described herein for illustrative purposes, various equivalent modifications are possible within the spirit and scope of the application, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications can be made to the above described embodiments and yet the application will remain within the scope of the application.

[0095] The systems and methods have been described generally herein to facilitate an understanding of the details of the application. Moreover, various specific details have been given for providing a thorough understanding of embodiments of the application. However, one skilled in the relevant art will recognize and appreciate that embodiments of the application can be practiced without one or more of the specific details, or with other devices, systems, assemblies, methods, components, materials, parts, and the like. In other instances, well-known structures, materials, and / or operations have not been shown or described in detail to avoid obscuring aspects of embodiments of the application.

[0096] Accordingly, although the application has been described herein in reference to specific embodiments thereof, many modifications, alterations and changes can be suggested to one skilled in the art and it is intended to include all such modifications, alterations and changes in the scope of the application, insofar as they do not depart from the spirit and scope of the claimed application. Accordingly, it is intended that the application not be limited, except as by the appended claims.

Claims

1. A device for checking blockages in the air-side flow channel of a cooling heat exchanger, used to check whether the cooling heat exchanger of an automobile is blocked, characterized in that, The application relates to a cooling heat exchanger air side flow passage blockage inspection device. The device body is made of insulating material. The protective screen is made of elastic conductive material and is installed in the device body. The detection grid is installed in the device body at a distance from the protective screen and is closer to the inside of the cooling heat exchanger than the protective screen. The detection mechanism comprises a signal detection unit and a control unit. When the protective screen is deformed and contacts the detection grid, the signal detection unit senses the signal that the protective screen contacts the detection grid and outputs the signal to the control unit.

2. The cooling heat exchanger air side flow passage blockage inspection device according to claim 1, wherein the signal detection unit is a current sensor. The power supply is connected to the positive pole of the detection mechanism and the detection grid.

3. The cooling heat exchanger air side flow passage blockage checking apparatus according to claim 2, characterized by When the protective screen is deformed and contacts the detection grid, the positive pole of the power supply contacts the negative pole, the current is connected, the current sensor senses the current connection current signal and outputs the current signal to the control unit.

4. The cooling heat exchanger air side flow passage blockage inspection device according to claim 2, wherein the detection grid, the current sensor and the control unit are connected to the positive pole of the power supply of the automobile controller through wires; the protective screen is connected to the power supply of the automobile controller and is grounded in the automobile controller. When the protective screen is deformed and contacts the detection grid, the positive pole of the power supply of the automobile controller is grounded, the current rises, the current sensor detects the current rise signal and outputs the current rise signal to the control unit when the current exceeds a specified value, and the control unit sends the current rise signal to the terminal device.

5. The cooling heat exchanger air side flow passage blockage inspection device according to claim 4, wherein the control unit is further connected to the vehicle speed sensor of the automobile, and the vehicle speed sensor is used for outputting a vehicle speed signal to the control unit. The control unit judges whether to send the current rise signal to the terminal device according to the vehicle speed signal.

6. The cooling heat exchanger air side flow passage blockage inspection device according to claim 4 or 5, wherein the detection mechanism is arranged in the automobile controller, and the automobile controller is provided with an interface for connecting the detection grid to the current sensor and connecting the protective screen to the power supply of the automobile controller and grounding the protective screen in the automobile controller. ​ ​ ​ ​ ​ The device body is fixed with a wire harness box, and the connecting wire harness of the protective net and the detection grid is arranged in the wire harness box; A plug-in connector for connecting the interface is further arranged above the wire harness box.

7. The cooling heat exchanger air side flow passage blockage inspection device according to claim 1, characterized in that, The elastic conductive material is stainless steel metal material, and the protective net is a 4-mesh stainless steel metal plain net.

8. The cooling heat exchanger air side flow passage blockage inspection device according to claim 7, characterized in that, The mesh size of the 4-mesh stainless steel metal plain net is 4-5.5 mm, and the wire diameter size is 1 mm.

9. The cooling heat exchanger air side flow passage blockage inspection device according to claim 1, characterized in that, The device body is composed of a first frame, a second frame and a third frame which can be disassembled and combined; The protective net is installed between the first frame and the second frame; The detection electrode is installed between the second frame and the third frame.

10. A heat exchanger, characterized by The cooling heat exchanger air side flow passage blockage inspection device according to any one of claims 1-9.

11. A vehicle characterized by comprising: The heat exchanger according to claim 10.

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