Desiccant devices and vehicles

Abstract

This application relates to the field of vehicle equipment technology, and discloses a desiccant device and a vehicle. The desiccant device is used for vehicle lights. The housing has a mounting cavity extending along a first direction, and a first through hole communicating with the mounting cavity is opened on the housing. A desiccant structure is disposed within the mounting cavity, and a strain gauge is disposed within the mounting cavity with its deformation surface facing the desiccant structure. The strain gauge deforms under the expansion and compression of the desiccant structure. A monitoring unit is electrically connected to the strain gauge, and the monitoring unit is used to detect the resistance of the strain gauge and issue a reminder when the resistance reaches a set threshold. The desiccant device provided by this application can monitor the status of the desiccant structure in real time, reminding the user to replace the desiccant structure in a timely manner, effectively preventing vehicle lights from fogging due to desiccant structure failure, and improving driving safety.

Description

Technical Field

[0001] This application relates to the field of vehicle equipment technology, and more particularly to a desiccant device and a vehicle. Background Technology

[0002] Automotive lights come in a wide variety of shapes and complex structures, with increasingly compact internal spaces, leading to widespread fogging inside the lights. Fogging affects the effectiveness of the lights and reduces driving safety.

[0003] By installing a desiccant device inside the headlights, the desiccant absorbs the water vapor inside the headlights, preventing fogging and ensuring the headlights' effectiveness.

[0004] However, the desiccant devices in the aforementioned technologies cannot determine the condition of the desiccant, resulting in the desiccant not being replaced in a timely manner, which affects the performance of the vehicle lights. Utility Model Content

[0005] In view of this, embodiments of this application provide a desiccant device and a vehicle to solve the technical problem in the above-mentioned related technologies that the desiccant device cannot determine the usage status of the desiccant, resulting in the desiccant not being replaced in time and affecting the performance of the vehicle lights.

[0006] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0007] A first aspect of this application provides a desiccant device for use in vehicle lights, comprising:

[0008] The housing has a mounting cavity extending in a first direction, and the housing has a first through hole communicating with the mounting cavity;

[0009] A desiccant structure is disposed within the mounting cavity;

[0010] A strain gauge is disposed in the mounting cavity, with the deformation surface of the strain gauge facing the desiccant structure, and the strain gauge deforms under the expansion and compression of the desiccant structure;

[0011] A monitoring unit is electrically connected to the strain gauge. The monitoring unit is used to detect the resistance of the strain gauge and issue an alert when the resistance reaches a set threshold.

[0012] This application provides a desiccant device. A desiccant structure and a strain gauge are disposed within the mounting cavity of a housing, with the deformation surface of the strain gauge facing the desiccant structure. When the desiccant structure absorbs moisture and expands, it compresses the strain gauge, causing it to deform and resulting in a change in the strain gauge's resistance. A monitoring unit is electrically connected to the strain gauge to detect its resistance, enabling real-time monitoring of the desiccant structure's status. When the desiccant absorbs moisture and expands to a certain extent, and the strain gauge resistance change reaches a set threshold, it can be determined that the desiccant structure is about to fail, thus reminding the user to replace the desiccant structure in a timely manner. This effectively prevents vehicle lights from fogging due to desiccant structure failure, improving driving safety.

[0013] In some embodiments of this application, the desiccant structure includes a first surface and a second surface adjacent to each other, wherein the surface area of ​​the first surface is greater than the surface area of ​​the second surface;

[0014] The deformable surface faces the first surface.

[0015] In some embodiments of this application, the inner wall of the mounting cavity has a first slot;

[0016] The deformable surface has a first flange on one side along the width direction, and the first flange is engaged in the first slot.

[0017] In some embodiments of this application, the inner wall of the mounting cavity has a second slot, which is disposed opposite to the first slot along a second direction, the second direction being perpendicular to the first direction;

[0018] The deformable surface has a second flange on the other side along the width direction, and the second flange is engaged in the second slot;

[0019] The width direction of the deformed surface is in the same direction as the second direction.

[0020] In some embodiments of this application, the desiccant device further includes:

[0021] The first contact is located on one side of the deformed surface along the width direction, and the first contact passes through the side wall of the housing and is electrically connected to the monitoring unit;

[0022] The second contact is located on the other side of the deformed surface along the width direction. The second contact passes through the side wall of the housing and is electrically connected to the monitoring unit.

[0023] The first contact, the strain gauge, the second contact, and the monitoring unit together form a detection circuit for detecting the resistance value of the strain gauge.

[0024] In some embodiments of this application, the first contact is detachably connected to the strain gauge;

[0025] And / or, the second contact is detachably connected to the strain gauge.

[0026] In some embodiments of this application, the housing further includes a mounting port that communicates with the mounting cavity;

[0027] The desiccant device further includes a baffle plate installed at the mounting port and shielding the strain gauge and the desiccant structure.

[0028] In some embodiments of this application, a second through hole and a third through hole are provided on the wall surface of the housing near the mounting port. The second through hole and the third through hole are arranged opposite to each other along a third direction, which is perpendicular to the first direction. The baffle passes through the second through hole and the third through hole.

[0029] In some embodiments of this application, a fourth through hole is provided on the baffle, and the fourth through hole communicates with the mounting cavity.

[0030] A second aspect of this application provides a vehicle including headlights and a desiccant device as described above. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a desiccant device provided in an embodiment of this application;

[0032] Figure 2 for Figure 1 Cross-sectional view at point AA;

[0033] Figure 3 for Figure 1 Cross-sectional view at point BB;

[0034] Figure 4 for Figure 1 A schematic diagram of the desiccant device from a C-angle view;

[0035] Figure 5 for Figure 4 Cross-sectional view at EE.

[0036] Figure label:

[0037] 100. Shell;

[0038] 110. Mounting cavity; 120. First through hole; 130. Mounting opening; 140. Second through hole;

[0039] 111. First card slot; 112. Second card slot;

[0040] 200. Desiccant structure;

[0041] 210. First surface; 220. Second surface;

[0042] 300. Strain gauge;

[0043] 310. Deformation surface; 320. First flange; 330. Second flange;

[0044] 400, First contact point;

[0045] 500, Second Contact;

[0046] 600, baffle;

[0047] 610. Fourth through hole. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0049] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0050] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0051] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0052] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0053] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0054] The desiccant devices in the aforementioned technologies cannot determine the desiccant's condition, leading to delayed desiccant replacement and affecting the effectiveness of the headlights. This problem arises because existing desiccant devices simply house the desiccant within the outer casing and lack monitoring or measurement units for its expansion and operational status. This necessitates users removing the entire desiccant device from the headlight assembly to ascertain its condition, or waiting until the headlights fog up again to discover the device has failed. This results in delayed desiccant replacement, impacting headlight performance and potentially compromising vehicle safety due to fogging.

[0055] To address the aforementioned problems, this application provides a desiccant device and vehicle. By placing a desiccant structure and a strain gauge within the mounting cavity of the housing, with the deformation surface of the strain gauge facing the desiccant structure, when the desiccant structure absorbs moisture and expands, it compresses the strain gauge, causing deformation and a change in the strain gauge's resistance. A monitoring unit, electrically connected to the strain gauge, detects its resistance, enabling real-time monitoring of the desiccant structure's state. When the desiccant structure absorbs moisture and expands to a certain extent, and the strain gauge resistance change reaches a set threshold, it can be determined that the desiccant structure is about to fail, thus reminding the user to replace the desiccant structure promptly. This effectively prevents headlights from fogging due to desiccant structure failure, improving driving safety.

[0056] The desiccant device and vehicle provided in this application will now be described with reference to the accompanying drawings and specific embodiments.

[0057] Reference Figure 1 , Figure 2 and Figure 3 This application provides a desiccant device for use in vehicle lights. The desiccant device may include a housing 100, a desiccant structure 200, a strain gauge 300, and a monitoring unit (not shown in the figure).

[0058] The housing 100 has a first direction (e.g.) Figure 1The mounting cavity 110 extends in the Y direction, and the housing 100 has a first through hole 120 communicating with the mounting cavity 110. The housing 100 can be installed inside the lamp cover of the vehicle lamp to absorb moisture inside the lamp. The first through hole 120 on the housing 100 communicating with the interior of the mounting cavity 110 allows moisture inside the vehicle lamp to enter the mounting cavity 110 through the first through hole 120, and the desiccant structure 200 absorbs the moisture, thereby eliminating water mist inside the vehicle lamp. There can be multiple first through holes 120, which can be arranged at intervals on the outer side wall of the housing 100.

[0059] In some embodiments, the housing 100 may be rectangular, cylindrical, or other irregularly shaped to accommodate the internal spatial structure of different vehicle lights. The housing 100 may be made of plastic, metal, or composite materials. Plastic housings 100 have the advantages of being lightweight and low-cost, while metal housings 100 have better strength and durability.

[0060] The desiccant structure 200 is disposed within the mounting cavity 110 and can be adhesively attached to the inner wall of the mounting cavity 110 to prevent the desiccant structure 200 from shaking within the mounting cavity 110. In some embodiments, the desiccant structure 200 expands in volume after absorbing moisture.

[0061] The strain gauge 300 is disposed in the mounting cavity 110, with the deformation surface 310 of the strain gauge 300 facing the desiccant structure 200. The strain gauge 300 deforms under the expansion and compression of the desiccant structure 200. By making the deformation surface 310 of the strain gauge 300 face the desiccant structure 200, it is easier for the strain gauge 300 to deform after being subjected to the expansion and compression of the desiccant structure 200.

[0062] In some embodiments, the strain gauge 300 may be a metal strain gauge 300, a semiconductor strain gauge 300, or an optical fiber strain gauge 300. Metal strain gauges 300 have the characteristics of good linearity and high stability, semiconductor strain gauges 300 have the advantage of high sensitivity, and optical fiber strain gauges 300 have the characteristics of strong resistance to electromagnetic interference.

[0063] The monitoring unit is electrically connected to the strain gauge 300. The monitoring unit is used to detect the resistance of the strain gauge 300 and issue an alert when the resistance reaches a set threshold. The monitoring unit can not only monitor the resistance of the strain gauge 300 in real time, but also issue an alert when the resistance of the strain gauge 300 reaches a set threshold, so as to remind the user to replace the desiccant device or the desiccant structure 200 in the mounting cavity 110 in a timely manner.

[0064] In some embodiments, the alert can be issued by sounding an alarm in the passenger compartment or by sending a notification message to the vehicle's infotainment system, so that the user can check it in a timely manner.

[0065] In some embodiments, the monitoring unit can be a simple resistance measurement circuit, an integrated microcontroller, or a dedicated sensor interface chip. The monitoring unit can be configured with different levels of accuracy and response speed according to the specific application requirements.

[0066] In practical implementation, for products with limited internal space in vehicle lights, the desiccant device can utilize a plastic cuboid housing 100 with a compact internal mounting cavity 110 to fit within the confined space of the vehicle light. Aluminum-magnesium desiccant is chosen due to its significant volume expansion characteristics, which better compress the strain gauge 300. The strain gauge 300 is made of metal and is connected to the vehicle light's ECU via a simple resistance measurement circuit. When the resistance change of the strain gauge 300 reaches a certain threshold, the ECU alerts the driver to replace the desiccant via the instrument panel.

[0067] This application provides a desiccant device and a vehicle. By placing a desiccant structure 200 and a strain gauge 300 within the mounting cavity 110 of a housing 100, with the deformation surface 310 of the strain gauge 300 facing the desiccant structure 200, when the desiccant structure 200 absorbs moisture and expands, it compresses the strain gauge 300, causing it to deform and resulting in a change in the resistance of the strain gauge 300. A monitoring unit is electrically connected to the strain gauge 300 to detect its resistance, thereby enabling real-time monitoring of the state of the desiccant structure 200. When the desiccant structure 200 absorbs moisture and expands to a certain extent, and the resistance change of the strain gauge 300 reaches a set threshold, it can be determined that the desiccant structure 200 is about to fail, thus reminding the user to replace the desiccant structure 200 in a timely manner. This effectively prevents headlights from fogging due to the failure of the desiccant structure 200, improving driving safety.

[0068] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the desiccant structure 200 may include an adjacent first surface 210 and a second surface 220, the surface area of ​​the first surface 210 being larger than the surface area of ​​the second surface 220, and the deformable surface 310 facing the two first surfaces 210.

[0069] In some embodiments, the first surface 210 and the second surface 220 can be planar, curved, or inclined, and their specific shapes can be designed according to the shape of the desiccant structure 200 and the installation requirements of the strain gauge 300. For example, the first surface 210 can be planar, and the second surface 220 can be curved to increase the contact area between the desiccant structure 200 and the strain gauge 300.

[0070] In this way, by defining the shape of the desiccant structure 200, it has adjacent first surfaces 210 and second surfaces 220, with the surface area of ​​the first surface 210 being larger than that of the second surface 220, and the deformation surface 310 of the strain gauge 300 facing the two first surfaces 210. This design allows the desiccant structure 200 to make more full contact with the strain gauge 300 and exert a squeezing effect on it when it absorbs moisture and expands, thus making the deformation of the strain gauge 300 more obvious and the resistance change easier to detect, thereby improving the sensitivity and accuracy of the monitoring unit in monitoring the state of the desiccant.

[0071] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the inner wall of the mounting cavity 110 has a first slot 111. The deformable surface 310 has a first flange 320 on one side along the width direction, and the first flange 320 is engaged in the first slot 111.

[0072] In some embodiments, the first slot 111 may be rectangular, circular, or other shapes. The specific shape can be designed according to the flange shape of the strain gauge 300 to achieve a better locking effect. The shape of the first flange 320 can match the first slot 111; for example, a rectangular flange can mate with a rectangular slot, and a circular flange can mate with a circular slot, to ensure the stable fixing of the strain gauge 300. The first slot 111 can extend along a first direction, and the corresponding first flange 320 can also extend along the first direction. For example, the first slot 111 can extend from the mounting opening 130 of the mounting cavity 110 along the first direction to the bottom wall of the mounting cavity 110.

[0073] In this way, by providing a first slot 111 on the inner wall of the mounting cavity 110 and a first flange 320 for engaging with the deformation surface 310 of the strain gauge 300 along its width, the strain gauge 300 is stably fixed within the mounting cavity 110. This prevents the strain gauge 300 from shifting or shaking due to external factors (such as vibration during vehicle operation) before the desiccant absorbs moisture and expands, ensuring that the strain gauge 300 is always in the correct position and can accurately receive the squeezing action of the desiccant structure 200 during expansion, thereby guaranteeing the reliability of the test results.

[0074] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the inner wall of the mounting cavity 110 has a second slot 112, which is aligned with the first slot 111 along a second direction (e.g., Figure 3The first direction is perpendicular to the second direction. The deformable surface 310 has a second flange 330 on the other side along the width direction. The second flange 330 is engaged in the second slot 112. The width direction of the deformable surface 310 is in the same direction as the second direction.

[0075] In some embodiments, the shapes of the second slot 112 and the second flange 330 may be the same as or different from those of the first slot 111 and the first flange 320, but usually the same shape design is adopted for symmetry and stability.

[0076] Thus, based on the mating connection of the first slot 111 and the first flange 320, the design of adding a second slot 112 and a second flange 330 allows the strain gauge 300 to be fixed in the mounting cavity 110 on both sides in the width direction. This double-sided fixing method further enhances the stability of the strain gauge 300, enabling it to be evenly stressed when subjected to the expansion and compression of the desiccant structure 200, avoiding damage or inconsistent deformation of the strain gauge 300 due to uneven stress, thereby improving detection accuracy and installation stability.

[0077] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments, the desiccant structure 200 is an aluminum-magnesium desiccant.

[0078] This clearly indicates that desiccant structure 200 is an aluminum-magnesium desiccant. Aluminum-magnesium desiccants are characterized by high moisture absorption capacity, rapid moisture absorption, and significant volume expansion after moisture absorption. These characteristics allow them to more effectively absorb moisture in relatively enclosed and limited-space environments such as vehicle headlights, preventing fogging. Furthermore, their significant volume expansion characteristic makes it easier to monitor their condition using strain gauges 300, providing a more reliable basis for reminding users to replace the desiccant.

[0079] Reference Figure 4 and Figure 5 In some embodiments, the desiccant device may further include a first contact 400 and a second contact 500.

[0080] The first contact 400 is located on one side of the deformable surface 310 along its width direction, passes through the side wall of the housing 100, and is electrically connected to the monitoring unit. The second contact 500 is located on the other side of the deformable surface 310 along its width direction, passes through the side wall of the housing 100, and is electrically connected to the monitoring unit. The first contact 400, strain gauge 300, second contact 500, and monitoring unit together form a detection circuit for detecting the resistance value of strain gauge 300.

[0081] In this way, by setting up the first contact 400 and the second contact 500, and having them pass through the side wall of the housing 100 and electrically connect them to the monitoring unit, they together with the strain gauge 300 form a detection circuit, enabling accurate measurement of the resistance of the strain gauge 300. This electrical connection method ensures that the monitoring unit can stably and reliably acquire the resistance change signal of the strain gauge 300, thereby accurately determining the effective state of the desiccant. Compared with other possible connection methods, this structure is simple, easy to implement, and can effectively reduce interference during signal transmission, improving the accuracy of detection.

[0082] In some embodiments, both the first contact 400 and the second contact 500 can be detachably connected to the strain gauge 300. For example, plug-in structures can be provided on both sides of the strain gauge 300 in the width direction, and the first contact 400 can be inserted into the plug-in structure and detachably connected to the strain gauge 300 through the plug-in structure.

[0083] By connecting the first contact 400 and the strain gauge 300 in a detachable manner, the ease of disassembly between the first contact 400 and the strain gauge 300 is improved, and individual disassembly and maintenance of the first contact 400 and the strain gauge 300 are facilitated, reducing the maintenance cost of the desiccant device. Similarly, detachably connecting the second contact 500 and the strain gauge 300 also improves the ease of disassembly between the second contact 500 and the strain gauge 300, allowing for individual disassembly and maintenance of the second contact 500 and the strain gauge 300, further reducing the maintenance cost of the desiccant device.

[0084] In other embodiments, the first contact 400 and the second contact 500 may be connected to the strain gauge 300 and the detection device by welding, riveting or other connection methods to ensure the reliability of the electrical connection.

[0085] Reference Figure 4 and Figure 5 In some embodiments, the housing 100 may further include a mounting port 130, which communicates with the mounting cavity 110. The desiccant device may further include a baffle 600, which is mounted on the mounting port 130 and shields the strain gauge 300 and the desiccant structure 200.

[0086] Thus, the design of the mounting port 130 and the baffle 600 of the housing 100 serves to protect the strain gauge 300 and the desiccant structure 200. The baffle 600, installed at the mounting port 130 and shielding the strain gauge 300 and desiccant structure 200, prevents external impurities and dust from entering the mounting cavity 110, avoiding adverse effects on the moisture absorption performance of the desiccant structure 200 and the detection performance of the strain gauge 300. Simultaneously, the baffle 600 also prevents the desiccant structure 200 from detaching from the mounting cavity 110 during moisture absorption and expansion, ensuring the normal operation and service life of the device.

[0087] In some embodiments, the baffle 600 may be made of plastic, metal or composite material, and the specific choice may be adjusted according to the internal environment and cost requirements of the vehicle headlight.

[0088] Reference Figure 1 , Figure 4 and Figure 5 In some embodiments, a second through hole 140 and a third through hole (not shown in the figure) are provided on the wall surface of the housing 100 near the mounting port 130. The second through hole 140 and the third through hole are arranged opposite each other along a third direction, which is perpendicular to the first direction. The baffle 600 passes through the second through hole 140 and the third through hole. In some embodiments, the third direction can be in the same direction as the second direction.

[0089] Thus, by creating a second through hole 140 and a third through hole on the wall surface of the housing 100 near the mounting opening 130, and inserting the baffle 600 through them, this structure facilitates the installation and fixation of the baffle 600. Simultaneously, the second through hole 140 and the third through hole are arranged opposite each other along a third direction, and the third direction is perpendicular to the first direction. This layout allows the baffle 600 to be positioned more stably during installation, further enhancing the structural stability of the device. Moreover, this design also facilitates the disassembly and replacement of the baffle 600. When maintenance or desiccant replacement is required, the baffle 600 can be removed more easily, improving operational convenience.

[0090] Reference Figure 4 and Figure 5 In some embodiments, the baffle 600 is provided with a fourth through hole 610, which connects to the mounting cavity 110.

[0091] Thus, the fourth through hole 610 on the baffle 600 connects to the mounting cavity 110. This design allows air to circulate inside and outside the baffle 600, avoiding internal pressure changes caused by the baffle 600 completely sealing the mounting cavity 110. During the moisture absorption and expansion process of the desiccant structure 200, the air pressure inside the mounting cavity 110 may change. If the baffle 600 is completely sealed, it may hinder the expansion of the desiccant structure 200, affecting its moisture absorption performance and the normal operation of the device. However, the fourth through hole 610 can balance the air pressure inside and outside the mounting cavity 110, allowing the desiccant structure 200 to absorb moisture and expand more smoothly. This ensures that the strain gauge 300 can accurately detect the state changes of the desiccant structure 200, improving the reliability of the device.

[0092] Reference Figure 1 This application also provides a vehicle, which may include headlights and the desiccant device described above.

[0093] In some embodiments, vehicle lights can be different types of lights such as headlights, taillights, and fog lights.

[0094] This application provides a vehicle in which the aforementioned desiccant device is applied to the vehicle's headlights, enabling the vehicle to monitor the status of the headlight desiccant structure 200 in real time. This application effectively solves the fogging problem caused by untimely replacement of headlight desiccant in existing technologies, improving the headlight's performance and driving safety. By combining the desiccant device with the vehicle's headlights, effective monitoring of the headlight's internal environment is achieved, providing users with a more intelligent and automated headlight anti-fogging solution, enhancing the vehicle's overall performance and user experience.

[0095] In some embodiments, the vehicle may be a gasoline-powered vehicle, or it may be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle may also be any vehicle equipped with a battery.

[0096] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A desiccant device, characterized in that, Used in vehicle lights, including: The housing (100) has a mounting cavity (110) extending along a first direction, and the housing (100) has a first through hole (120) communicating with the mounting cavity (110); A desiccant structure (200) is disposed within the mounting cavity (110); A strain gauge (300) is disposed in the mounting cavity (110), the deformation surface (310) of the strain gauge (300) faces the desiccant structure (200), and the strain gauge (300) deforms under the expansion and compression of the desiccant structure (200); A monitoring unit is electrically connected to the strain gauge (300). The monitoring unit is used to detect the resistance of the strain gauge (300) and issue an alert when the resistance reaches a set threshold.

2. The desiccant device according to claim 1, characterized in that, The desiccant structure (200) includes a first surface (210) and a second surface (220) adjacent to each other, wherein the surface area of ​​the first surface (210) is greater than the surface area of ​​the second surface (220); The deformable surface (310) faces the first surface (210).

3. The desiccant device according to claim 1, characterized in that, The inner wall of the mounting cavity (110) has a first slot (111); The deformable surface (310) has a first flange (320) on one side along the width direction, and the first flange (320) is engaged in the first slot (111).

4. The desiccant device according to claim 3, characterized in that, The inner wall of the mounting cavity (110) has a second slot (112), which is disposed opposite to the first slot (111) along a second direction, and the second direction is perpendicular to the first direction; The deformable surface (310) has a second flange (330) on the other side along the width direction, and the second flange (330) is engaged in the second slot (112); The width direction of the deformable surface (310) is in the same direction as the second direction.

5. The desiccant device according to claim 1, characterized in that, The desiccant device further includes: The first contact (400) is disposed on one side of the deformable surface (310) along the width direction. The first contact (400) passes through the side wall of the housing (100) and is electrically connected to the monitoring unit. The second contact (500) is disposed on the other side of the deformable surface (310) along the width direction. The second contact (500) passes through the side wall of the housing (100) and is electrically connected to the monitoring unit. The first contact (400), the strain gauge (300), the second contact (500), and the monitoring unit together form a detection circuit for detecting the resistance of the strain gauge (300).

6. The desiccant device according to claim 5, characterized in that, The first contact (400) is detachably connected to the strain gauge (300); And / or, the second contact (500) is detachably connected to the strain gauge (300).

7. The desiccant device according to claim 1, characterized in that, The housing (100) further includes a mounting port (130) that communicates with the mounting cavity (110); The desiccant device further includes a baffle (600) which is installed at the mounting port (130) and shields the strain gauge (300) and the desiccant structure (200).

8. The desiccant device according to claim 7, characterized in that, The housing (100) has a second through hole (140) and a third through hole on the wall near the mounting port (130). The second through hole (140) and the third through hole are arranged opposite each other along a third direction, which is perpendicular to the first direction. The baffle (600) passes through the second through hole (140) and the third through hole.

9. The desiccant device according to claim 8, characterized in that, The baffle (600) has a fourth through hole (610) which connects to the mounting cavity (110).

10. A vehicle, characterized in that, It includes vehicle lights and a desiccant device as claimed in any one of claims 1 to 9.

Images