A car-grade three-in-one vehicle-mounted device intelligent control module

Abstract

The application discloses a vehicle-grade three-in-one vehicle-mounted equipment intelligent control module, which comprises a front shell, a rear shell and a heat dissipation plate, and further comprises: a mounting frame installed in the front shell, wherein the upper part of the mounting frame is provided with a plurality of cavities, at least part of the cavities are used for installing fragrance components, and at least one of the cavities forms a hot air bypass cavity. The application shares a single fan, and airflow flows through an electrically-controlled heat dissipation air duct to dissipate heat for the three-in-one control circuit module; hot air flows into the fragrance cavity, and helps the fragrance to volatilize at low temperature; the opening flared elastic compression ring outside at least part of the vertical air pipe is provided with an opening, so that the opening flared elastic compression ring can be heat-induced to expand or elastically contract according to the temperature change of the heat dissipation module, so as to adaptively adjust the flow area of the vertical air pipe, and cooperate with the heat exchange pipe and the phase change material to weaken the temperature fluctuation of airflow before entering the fragrance cavity, thereby improving the heat dissipation reliability and the fragrance release stability.

Description

Technical Field

[0001] This invention mainly relates to the field of vehicle-mounted equipment technology, specifically a vehicle-grade three-in-one intelligent control module for vehicle-mounted equipment. Background Technology

[0002] With the continuous improvement of vehicle intelligence and comfort features, comfort devices such as in-vehicle fragrances, in-vehicle refrigerators, and in-vehicle oxygen generators are gradually being applied to car cabins. In-vehicle fragrances are used to improve the odor of the air inside the car, in-vehicle refrigerators are used to store beverages or food at low temperatures, and in-vehicle oxygen generators are used to improve the oxygen content of the air inside the car or meet the needs of specific passengers. The above devices usually require power drive, signal control, status detection, and fault protection. Therefore, how to achieve the integrated layout and stable control of multiple types of in-vehicle comfort devices within the limited installation space of a vehicle has become an important issue in the design of in-vehicle equipment.

[0003] In existing technologies, in-vehicle fragrance devices, in-vehicle refrigerators, and in-vehicle oxygen generators mostly adopt relatively independent control structures. Each device is equipped with its own control circuit, drive interface, power supply line, and heat dissipation structure. Although this approach can meet the basic working requirements of a single device, it can easily lead to problems such as an increase in the number of wiring harnesses, a larger installation space occupation, and increased assembly complexity when integrated into the whole vehicle. At the same time, the redundant setting of multiple control circuits and heat dissipation structures will also increase costs and potential failure points, which is not conducive to the miniaturization and modular design of automotive-grade equipment.

[0004] For control modules that integrate multiple loads, the refrigerator drive components, oxygen generator drive components, fragrance fan drive components, and related power devices all generate heat during operation. In existing technologies, the electronically controlled heat dissipation duct and the fragrance release duct are often set up independently, which leads to two problems: first, the hot air generated by the electronically controlled heat dissipation is directly discharged into the vehicle compartment or the atmosphere, and the heat is not effectively utilized; second, the fragrance component needs to have a separate fan or relies on natural diffusion, and the fragrance evaporation rate is insufficient in low-temperature environments, affecting the user experience.

[0005] On the other hand, in multi-fragrance car air fresheners, if each fragrance chamber is only connected to the air duct through a simple through hole, there may still be a weak airflow or diffusion channel at the unselected fragrance chamber, which will cause the different fragrances to mix and the fragrance to continue to evaporate after parking, affecting the accuracy of fragrance switching and user experience. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. It primarily offers an automotive-grade, three-in-one intelligent control module for in-vehicle devices, which solves the technical problems mentioned in the background section regarding the difficulty of integrating in-vehicle control modules in simultaneously addressing the requirements for electronic control heat dissipation, the stability of airflow temperature before entering the fragrance component, and the prevention of cross-contamination of odors in multiple fragrance cavities.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A vehicle-grade three-in-one intelligent control module for in-vehicle equipment includes a front housing, a rear housing, and a heat sink, and further includes: The mounting bracket is installed inside the front housing. The upper part of the mounting bracket is provided with multiple cavities, at least some of which are used to install fragrance components, and at least one of the cavities forms a hot air bypass cavity. A heat dissipation module is disposed between the heat dissipation plate and the partition plate. The heat dissipation module includes a heat dissipation cavity, several vertical air ducts and heat exchange tubes. The vertical air ducts pass through the heat dissipation cavity to form an electrically controlled heat dissipation air duct. A phase change material is encapsulated in the heat dissipation cavity, and the heat exchange tubes pass through the heat dissipation cavity. A fan is installed at the lower part of the mounting frame to drive airflow through the electronically controlled heat dissipation duct to the cavity of the mounting frame, and finally discharged from the air outlet of the front housing. The three-in-one control circuit module is installed inside the rear housing and is used to control the loads related to the car air freshener, car refrigerator and car oxygen concentrator. An air regulating mechanism is installed in the flow channel between the air outlet cavity and the air inlet cavity at the top of the front housing; An opening and closing mechanism is slidably mounted on the mounting bracket and is used to open and close the ventilation holes of the corresponding cavity. An adjustment mechanism is rotatably mounted on the mounting bracket and is linked with the opening and closing mechanism to control the opening and closing state of each cavity.

[0008] More preferably, each of the cavities is provided with ventilation holes at the top and bottom; the air inlet side of the fan faces the bottom ventilation holes of the plurality of cavities, and the air outlet side of the fan corresponds to the air outlet on the front housing; the air regulating mechanism is used to adjust the communication state between the air outlet cavity and the air inlet cavity, or to reduce the backflow of gas in the air inlet cavity to the air outlet cavity when closed.

[0009] More preferably, at least a portion of the vertical duct is fitted with an open-ended elastic pressure ring on its outer side, the open-ended elastic pressure ring being located at the top of the heat dissipation module; at least one of the open-ended elastic pressure rings has a thermotropic expansion arm that moves in a predetermined direction as the temperature rises; a first micro switch and a second micro switch are sequentially arranged on the heat dissipation module along the expansion movement direction of the free end of the thermotropic expansion arm; the air conditioning mechanism includes an electric actuator, the first micro switch, the second micro switch, and the electric actuator are respectively electrically connected to the three-in-one control circuit module; the phase change material is sealed within a packaging shell, the vertical duct has a pressure ring mounting section extending out of the packaging shell, and the open-ended elastic pressure ring is fitted outside the pressure ring mounting section and isolated from the packaging space of the phase change material.

[0010] More preferably, when the temperature of the heat dissipation module rises, the thermally induced outward expansion arm reduces the radial clamping force of the open outward expansion elastic pressure ring on the vertical air duct, and at the same time, triggers the first micro switch and the second micro switch in sequence with the outward expansion displacement, so that the three-in-one control circuit module controls the air adjustment mechanism to sequentially increase the connection opening between the air outlet cavity and the air inlet cavity; When the second micro switch is triggered, the three-in-one control circuit module also controls the adjustment mechanism to open the hot air bypass cavity and close the cavity where the fragrance component is installed, while increasing the speed of the fan. The second micro switch is also connected to the electric actuator via a hardware forced-open branch; the air regulating mechanism has a predetermined high-temperature air guiding position, the connection opening corresponding to the predetermined high-temperature air guiding position is greater than the connection opening corresponding to the normal air guiding position and the medium-temperature air guiding position, and the electric actuator is provided with a limit switch corresponding to the predetermined high-temperature air guiding position; when the vehicle power supply is normal and the second micro switch is triggered, the hardware forced-open branch can bypass the main control program of the three-in-one control circuit module, drive the electric actuator to move in the direction of increasing the connection opening between the air outlet cavity and the air inlet cavity, and stop the electric actuator by the limit switch when the air regulating mechanism reaches the predetermined high-temperature air guiding position.

[0011] More preferably, the outward-expanding elastic pressure ring is an elastic annular clamping member with a notch, and its inner circumference is provided with multiple segmented clamping ribs at intervals, which abut against the outer circumferential wall of the vertical air duct in a low-temperature state; the opening forms a guide port and an outward-expanding end, and the thermo-induced outward-expanding arm is connected to the outward-expanding end of the opening. The thermo-induced outward-expanding arm is a thermo-bimetallic sheet, a strip or sheet shape memory alloy part, or a thermo-induced bending elastic sheet formed by composite materials with different thermal expansion coefficients; the outward-expanding end of the opening is provided with a thinning deformation groove near the ring body, and a limit stop is provided on the outer side.

[0012] In a further preferred embodiment, the heat exchange tube is connected to the cold end heat exchange branch of the vehicle refrigerator, and the low-temperature heat exchange medium provided by the cold end of the vehicle refrigerator flows only inside the heat exchange tube and exchanges heat with the phase change material in the heat dissipation cavity in an isolated manner; an encapsulation shell is provided in the heat dissipation cavity, the phase change material is sealed in the encapsulation shell, the vertical air duct passes through the encapsulation shell and makes thermal contact with the phase change material, and the heat exchange tube is an S-shaped, serpentine, or U-shaped tube, which passes through the encapsulation shell and makes thermal contact with the phase change material.

[0013] More preferably, the upper part of the mounting bracket is provided with three cavities, two of which are used to install fragrance components, and the other is an empty hot air bypass cavity with a hollow air guiding structure; the opening and closing mechanism includes an upper sealing block, a lower sealing block and a connecting piece, the upper sealing block and the lower sealing block are respectively used to close or open the top and bottom ventilation holes of the corresponding cavities, and can move synchronously with the connecting piece.

[0014] Further preferably, it also includes a drive mechanism and a transmission mechanism; the adjustment mechanism includes a rotating shaft and a worm gear disposed on the rotating shaft, the rotating shaft is provided with multiple linkage blocks, each linkage block is provided with a track with a different track shape or phase; the lower enclosed block is provided with a linkage member, the transmission mechanism is a worm gear meshing with the worm gear, the linkage member is slidably connected to the corresponding track; the rotating shaft is provided with an angle encoder electrically connected to the three-in-one control circuit module.

[0015] More preferably, the heat sink is installed inside the rear housing, located on the side of the three-in-one control circuit module near the partition plate, and in thermal contact with the heat dissipation module; the bottom of the rear housing is provided with an air inlet, and the top is provided with an air outlet; when the fan is working, the airflow enters the electronically controlled heat dissipation duct through the air inlet of the rear housing, flows through the vertical air duct of the heat dissipation module and exchanges heat with the heat sink, and then sequentially enters the air outlet, the air inlet and the opened cavity, and finally is discharged from the air outlet of the front housing.

[0016] More preferably, when neither the first micro switch nor the second micro switch is triggered, the three-in-one control circuit module controls the air regulating mechanism to be in the normal air guiding position; when only the first micro switch is triggered, the air regulating mechanism is controlled to be in the medium-temperature air guiding position; when both switches are triggered, the air regulating mechanism is controlled to be in the high-temperature air guiding position, and the connection opening corresponding to the normal air guiding position, the medium-temperature air guiding position and the high-temperature air guiding position increases sequentially.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention integrates a three-in-one control circuit module, heat sink, heat dissipation module, mounting bracket, and fan for controlling the loads related to the in-vehicle fragrance, in-vehicle refrigerator, and in-vehicle oxygen concentrator into the front and rear housings. The air inlet of the rear housing, the electronically controlled heat dissipation duct, the air outlet, the air inlet, the opened cavity, the fan, and the air outlet of the front housing form a continuous airflow path. This allows the airflow driven by the same fan to carry away the heat from the three-in-one control circuit module and then continue to be used for fragrance release or discharged through the hot air bypass cavity. This achieves both electronically controlled heat dissipation and fragrance delivery, and helps to reduce the duplication of independent control, heat dissipation, and air delivery structures, thereby improving module integration and space utilization.

[0018] 2. This invention enables the heat dissipation plate to make thermally conductive contact with the heat dissipation module, and sets up a phase change material, a vertical air duct penetrating the phase change material's encapsulation shell, and a heat exchange pipe connected to the cold end heat exchange branch of the vehicle refrigerator within the heat dissipation cavity. This allows the heat generated by the three-in-one control circuit module to be transferred to the heat dissipation module via the heat dissipation plate, buffered by phase change heat absorption by the phase change material, and isolated for heat exchange via the heat exchange pipe when the cold end of the vehicle refrigerator is available. This reduces temperature fluctuations in the heat dissipation module and the airflow flowing through the vertical air duct, keeps the low-temperature heat exchange medium isolated from the phase change material, and improves the continuity and reliability of heat dissipation in the three-in-one control circuit module.

[0019] 3. This invention, by setting an open-type elastic pressure ring on the outside of a vertical duct, and causing the thermally induced expansion arm to expand outward as the temperature rises, sequentially triggering the first and second micro switches, allows the same temperature-induced displacement action to reduce the radial clamping force of the open-type elastic pressure ring on the vertical duct, increase the flow cross-sectional area of ​​the vertical duct, and generate two levels of control signals at medium and high temperatures, thereby gradually increasing the opening degree of the air conditioning mechanism. When the temperature is low, the open-type elastic pressure ring remains tight and retains the basic heat dissipation channel, allowing some of the electrical control waste heat to be used to assist in fragrance evaporation. When the temperature rises, ventilation and heat dissipation are gradually enhanced, thus adapting the air volume adjustment to the changes in heat dissipation load.

[0020] 4. This invention controls the opening of the hot air bypass cavity and the closing of the fragrance cavity and increases the fan speed when the second micro switch is triggered, so that the high-temperature airflow bypasses the fragrance component and is preferentially used for heat dissipation, reducing the possibility of excessive fragrance volatilization caused by the high-temperature airflow. At the same time, the second micro switch is connected to the electric actuator of the air regulating mechanism through hardware forced opening branch, and the electric actuator is stopped by the limit switch corresponding to the high-temperature air guide position. This allows the connection between the air outlet cavity and the air inlet cavity to be forcibly increased even when the main control program is abnormal but the vehicle power supply is normal, thereby improving the reliability of heat dissipation protection under high load or abnormal operating conditions.

[0021] 5. This invention utilizes worm gear and worm wheel transmission, and multiple linkage blocks with different track shapes or phases on the rotating shaft to link various opening and closing mechanisms, allowing a single drive mechanism to selectively open either of the two fragrance chambers or the hot air bypass chamber. The upper and lower sealing blocks simultaneously seal the top and bottom ventilation holes of the unselected chamber, effectively cutting off the air inlet and outlet passages of that chamber, reducing cross-contamination between different fragrances and continuous leakage after use. The self-locking effect of the worm gear and worm wheel, combined with the position feedback of the angle encoder, helps improve the stability of the chamber opening and closing positions and the accuracy of channel switching under vehicle vibration conditions.

[0022] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the heat dissipation module of the present invention; Figure 6 This is a schematic diagram of the open-type outward-expanding elastic compression ring structure of the present invention.

[0024] Numbering on the map: 1. Front housing; 2. Rear housing; 3. Mounting bracket; 4. Fragrance component; 5. Heat dissipation module; 501. Heat dissipation cavity; 502. Vertical air duct; 503. Heat exchange tube; 504. Opening outward-expanding elastic pressure ring; 50401. Segmented pressing rib; 50402. Guide port; 50403. Opening outward-expanding end; 50404. Thermally induced outward-expanding arm; 50405. Thinning deformation groove; 50406. Limiting stop edge; 6. Drive mechanism; 7. Transmission mechanism; 8. Adjustment mechanism; 9. Three-in-one control circuit module; 10. Heat sink; 11. Partition plate; 12. Opening and closing mechanism; 13. Air conditioning mechanism; 14. Fan. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Please refer to the appendix carefully. Figures 1-6 A vehicle-grade three-in-one intelligent control module for in-vehicle equipment includes a front housing 1, a rear housing 2, and a heat sink 10, and further includes: The rear housing 2 is installed at the rear end of the front housing 1. The bottom of the rear housing 2 is provided with an air inlet, and the top of the rear housing 2 is provided with an air outlet. Mounting bracket 3 is installed inside the front housing 1. The upper part of the mounting bracket 3 is provided with multiple cavities. At least some of the cavities are used to install the fragrance component 4. At least one cavity forms a hot air bypass cavity. Each cavity is provided with ventilation holes at the top and bottom. Fragrance component 4 is installed in at least part of the cavity of the mounting bracket 3 for carrying fragrance gas through the airflow; The heat dissipation module 5 is disposed between the heat dissipation plate 10 and the partition plate 11. The heat dissipation module 5 includes a heat dissipation cavity 501, several vertical air ducts 502, heat exchange tubes 503 and an open-type elastic pressure ring 504. The fan 14 is installed at the lower part of the mounting bracket 3. The air inlet side of the fan 14 faces the bottom ventilation hole of the multiple cavities, and the air outlet side of the fan 14 corresponds to the air outlet on the front housing 1. The three-in-one control circuit module 9 is installed inside the rear housing 2 and is used to control the loads related to the car air freshener, car refrigerator and car oxygen concentrator. Heat sink 10 is installed inside the rear housing 2 and located on the side of the three-in-one control circuit module 9 near the partition plate 11. An electronically controlled heat dissipation air duct is formed between the heat sink 10 and the partition plate 11. The lower end of the electronically controlled heat dissipation air duct is connected to the air inlet of the rear housing 2, and the upper end of the electronically controlled heat dissipation air duct is connected to the air outlet. The partition plate 11 is installed inside the front housing 1 and is located on the rear side of the mounting bracket 3; The air adjustment mechanism 13 is located in the flow channel between the air outlet cavity and the air inlet cavity at the top of the front housing 1. The air adjustment mechanism 13 is used to adjust the connection state between the air outlet cavity and the air inlet cavity, or to adjust the air intake state of the outside air entering the air inlet cavity. The opening and closing mechanism 12 is slidably mounted on the mounting bracket 3 and is correspondingly set with multiple cavities. The opening and closing mechanism 12 is used to open or close the top ventilation hole and bottom ventilation hole of the corresponding cavity. Adjustment mechanism 8 is rotatably mounted on mounting bracket 3. Adjustment mechanism 8 is linked with opening and closing mechanism 12 so that when adjustment mechanism 8 is rotated to different angle positions, the cavity and / or hot air bypass cavity on which fragrance component 4 is installed is opened or closed. Drive mechanism 6 is mounted on partition plate 11; The transmission mechanism 7 is connected to the output end of the drive mechanism 6, and the adjustment mechanism 8 is connected to the drive mechanism 6 via the transmission mechanism 7. When the fan 14 is working, it can draw in airflow, so that the outside air enters the electronically controlled heat dissipation air duct through the air inlet of the rear housing 2, and enters the air outlet cavity after passing through the vertical air duct 502 and heat dissipation plate 10 of the heat dissipation module 5. After being adjusted by the air adjustment mechanism 13, it enters the air inlet cavity of the front housing 1, and then enters the cavity opened by the opening and closing mechanism 12. After being drawn by the fan 14, it is discharged from the air outlet of the front housing 1.

[0028] In this embodiment, as Figure 1 and Figure 2 As shown, the front housing 1 and the rear housing 2 are interlocked to form the module shell. The front housing 1 and the rear housing 2 can be injection molded from automotive-grade heat-resistant plastic. The front housing 1 and the rear housing 2 can be fixed together by bolts, clips or a combination of bolts and clips, and a sealing strip can be set at the connection to reduce airflow leakage and foreign object entry.

[0029] The bottom of the rear housing 2 is provided with an air inlet, and a dust filter can be installed at the air inlet. The top of the rear housing 2 is provided with an air outlet. The rear housing 2 is equipped with a three-in-one control circuit module 9 and a heat sink 10. The three-in-one control circuit module 9 may include a main control chip, a power management circuit, an aromatherapy drive interface, a refrigerator load drive interface, an oxygen concentrator load drive interface, a communication interface, and a detection interface, which are used to uniformly control the related loads of the car aromatherapy, car refrigerator, and car oxygen concentrator.

[0030] In this embodiment, as Figure 2 As shown, the heat sink 10 is located on the side of the three-in-one control circuit module 9 near the partition plate 11. The heat sink 10 can be made of aluminum alloy, copper alloy or thermally conductive composite material. The heat sink 10 is provided with a number of heat dissipation fins, which extend toward the partition plate 11. The sockets, power devices or other heat-generating modules on the three-in-one control circuit module 9 can make thermal contact with the heat sink 10 through thermal pads, thermal grease or elastic thermal sheets, so that the heat generated when the circuit module is working can be transferred to the heat sink 10 and the heat dissipation fins.

[0031] In this embodiment, as Figure 2As shown, the partition plate 11 is installed inside the front housing 1 and is located on the rear side of the mounting bracket 3. There is a gap between the heat dissipation plate 10 and the partition plate 11, which forms an electronically controlled heat dissipation air duct. The air inlet of the rear housing 2 is located below the electronically controlled heat dissipation air duct, and the air outlet of the rear housing 2 is located above the electronically controlled heat dissipation air duct. The airflow can enter the electronically controlled heat dissipation air duct from the bottom of the rear housing 2, and flow upward along the heat dissipation plate 10 and the heat dissipation fins, and then enter the air outlet at the top of the rear housing 2.

[0032] In this embodiment, a heat dissipation module 5 is provided between the heat sink 10 and the partition plate 11. The heat dissipation module 5 is located in the electronically controlled heat dissipation duct and is in thermal contact with the heat sink 10. The heat dissipation module 5 is provided between the heat sink 10 and the partition plate 11. Specifically, along the direction from the rear housing 2 to the front housing 1, the sequence is: rear housing 2 - three-in-one control circuit module 9 - heat sink 10 - heat dissipation module 5 - partition plate 11 - mounting bracket 3 - front housing 1. The rear side of the heat dissipation module 5 and the front side of the heat sink 10 are in thermal contact through thermally conductive grease. An elastic thermally conductive pad is provided between the front side of the heat dissipation module 5 and the rear side of the partition plate 11. The heat dissipation module 5 includes a heat dissipation cavity 501, which can be made of aluminum alloy, copper alloy or thermally conductive composite material. The heat dissipation cavity 501 is provided with several vertical air ducts 502 and heat exchange pipes 503. The lower end of the vertical air duct 502 is connected to the area where the air inlet is located at the bottom of the rear housing 2, and the upper end of the vertical air duct 502 is connected to the air outlet at the top of the rear housing 2, so that the heat dissipation airflow can pass through the heat dissipation module 5 from bottom to top.

[0033] A phase change material encapsulation shell is provided inside the heat dissipation cavity 501. The composite phase change material is sealed inside the encapsulation shell, and space is reserved for the expansion of the phase change material required by the volume change due to heat. The composite phase change material can be a paraffin-based phase change material, and thermally conductive fillers can be added. Its phase change temperature and material composition are determined according to the target temperature range of the heat dissipation module 5 and the operating temperature of the thermally induced external extension arm 50404.

[0034] The heat exchange tube 503 is inserted into the phase change material encapsulation shell and makes thermal contact with the phase change material. One end of the tube is connected to the cold end heat exchange branch of the vehicle refrigerator, and the other end is connected to the return pipe. The low-temperature heat exchange medium is preferably a coolant, which circulates through the heat exchange branch, heat exchange tube 503 and return pipe under the action of the circulation drive to isolate and exchange heat with the phase change material.

[0035] The heat exchange tube 503 can be configured as an S-shape, serpentine shape, or U-shape to extend the flow path of the cryogenic heat exchange medium within the phase change material encapsulation shell and increase the heat exchange range between the heat exchange tube 503 and the phase change material. The cryogenic heat exchange medium flows only within the heat exchange tube 503 and the corresponding piping, and does not come into direct contact with the phase change material.

[0036] The circulating drive component and the heat exchange medium control component for controlling the on / off state of the heat exchange branch are electrically connected to the three-in-one control circuit module 9. When the temperature of the heat dissipation module 5 exceeds the preset heat exchange temperature and the cold end of the vehicle refrigerator is available, the control module causes the low-temperature heat exchange medium to flow through the heat exchange tube 503; when the temperature drops to the preset stop temperature or the cold end becomes unavailable, the heat exchange branch is shut off, and the heat dissipation module 5 continues to passively buffer the temperature using the phase change material.

[0037] The circulation drive can be a circulation pump, the heat exchange medium control component can be a solenoid valve or switching valve set on the heat exchange branch, and the temperature sensor is set at a position that can reflect the temperature of the heat dissipation module 5 and is electrically connected to the three-in-one control circuit module 9 to feed back the temperature signal of the heat dissipation module 5 to the three-in-one control circuit module 9.

[0038] At least a portion of the vertical duct 502 is provided with an elastic adjustment section capable of elastic deformation under radial pressure, and an open-type outward-expanding elastic pressure ring 504 is sleeved on the outside of the elastic adjustment section. The open-type outward-expanding elastic pressure ring 504 is an elastic annular clamping member with a notch, and its inner circumference is provided with segmented clamping ribs 50401; in the tightened state, the vertical duct 502 still retains the minimum flow cross-sectional area to meet the basic heat dissipation requirements of the three-in-one control circuit module 9.

[0039] The open-type elastic pressure ring 504 is located on the top of the heat dissipation module 5. Multiple segmented pressing ribs 50401 are arranged circumferentially along its inner circumferential side. In the low-temperature tightening state, the multiple segmented pressing ribs 50401 abut against the outer circumferential wall of the elastic adjustment section of the vertical air duct 502, and cause the pipe wall of the elastic adjustment section to undergo elastic deformation inward under radial pressure, so as to reduce the flow cross-sectional area of ​​the vertical air duct 502. When the open-type elastic pressure ring 504 expands outward, the radial pressing force applied to the elastic adjustment section decreases, and the elastic adjustment section gradually recovers by its own elasticity, thereby increasing the flow cross-sectional area of ​​the vertical air duct 502.

[0040] The top of the phase change material encapsulation housing is lower than the outlet end of the vertical duct 502. The portion of the vertical duct 502 extending out of the encapsulation housing forms a pressure ring mounting section, and an open-ended elastic pressure ring 504 is fitted onto the outside of this pressure ring mounting section. The vertical duct 502 is sealed at the point where it passes through the encapsulation housing, thus confining the phase change material within the encapsulation housing and preventing it from contacting the open-ended elastic pressure ring 504, the open-ended end 50403, and the thermally induced expansion arm 50404, thereby ensuring its expansion and repositioning space.

[0041] An opening of the outward-expanding elastic pressure ring 504 forms a guide port 50402, and outward-expanding ends 50403 are formed on both sides of the guide port 50402. At least one outward-expanding end 50403 is connected to a thermally induced outward-expanding arm 50404.

[0042] A thinning deformation groove 50405 is provided at the position of the open-ended end 50403 near the ring body of the open-ended elastic pressure ring 504. The thinning deformation groove 50405 creates a local elastic deformation area between the open-ended end 50403 and the ring body. When the thermally induced outward-expanding arm 50404 undergoes bending displacement due to heat, the open-ended end 50403 can elastically bend at the thinning deformation groove 50405, thereby reducing the driving force required for the open-ended end 50403 to expand outward. A limiting stop 50406 is provided on the outer side of the opening outward end 50403. The limiting stop 50406 is used to limit the outward expansion amplitude of the opening outward end 50403 to prevent excessive deformation at the thinning deformation groove 50405 due to excessive outward expansion amplitude. When the temperature drops and the thermally induced outward expansion arm 50404 retracts, the thinning deformation groove 50405 recovers its elasticity, so that the opening outward end 50403 and the opening outward expansion elastic pressure ring 504 return to the tightened state.

[0043] The thermotropic expansion arm 50404 can be made of NiTi-based shape memory alloy strips or sheets with a predetermined operating temperature. Its operating temperature, load displacement, and restoring force are selected based on the elastic resistance of the open-type elastic pressure ring 504 and the triggering force of the micro switch to ensure that it can drive the open-type expansion end 50403 to expand outward after being heated and trigger the two micro switches in sequence. Thermally conductive lugs that make thermal contact with the heat dissipation cavity 501 can be provided on the thermotropic expansion arm 50404.

[0044] In other embodiments, the thermo-induced cantilever arm 50404 may also be a thermo-bimetallic sheet or a thermo-induced bending elastic sheet formed by a composite of materials with different coefficients of thermal expansion, so that it produces a bending displacement in a predetermined direction when the temperature changes.

[0045] A switch mounting base is provided near the free end of the thermally induced outward extension arm 50404 in the heat dissipation cavity 501. The switch mounting base is provided with an elongated mounting hole along the outward extension movement direction of the thermally induced outward extension arm 50404. The first micro switch and the second micro switch are respectively adjustablely mounted in the elongated mounting hole and arranged sequentially along the outward extension movement direction.

[0046] The first and second microswitches are preferably normally open and normally closed composite microswitches with elastic trigger arms or roller pressure rods. The thermally actuated extension arm 50404 first contacts and presses the elastic trigger arm of the first microswitch. After the first microswitch reaches its operating stroke, its elastic trigger arm can still continue to deflect, thereby forming an overtravel and allowing the thermally actuated extension arm 50404 to continue to move toward the second microswitch. The thermally actuated extension arm 50404 further extends and then contacts the elastic trigger arm of the second microswitch. Therefore, a continuous extension stroke can sequentially generate two mutually distinguishable switch signals without the need for repeated extension and retraction of the thermally actuated extension arm 50404.

[0047] The trigger position of the first microswitch is close to the initial free end of the thermally induced cantilever arm 50404, while the trigger position of the second microswitch is relatively far from the initial free end. The positions and spacing of the two microswitches are adapted to the load displacement of the thermally induced cantilever arm 50404, enabling the thermally induced cantilever arm 50404 to continue moving and trigger the second microswitch after triggering the first microswitch. During assembly, the positions of the two microswitches can be adjusted according to the measured temperature-displacement relationship.

[0048] The electric actuator of the air regulating mechanism 13 can be a micro DC motor with a reduction gear set or a small electric servo motor. The electric actuator is connected to the air regulating shaft through gears, connecting rods or direct output shaft. A position feedback device is set on the air regulating shaft or the electric actuator so that the air regulating mechanism 13 has at least a normal air guiding position, a medium temperature air guiding position and a high temperature air guiding position. The opening of the air outlet and air inlet corresponding to the normal air guiding position, the medium temperature air guiding position and the high temperature air guiding position increases sequentially. The electric actuator bears the airflow pressure and shaft friction when the air regulating plate rotates. The thermally induced outward extension arm 50404 only needs to overcome the action force of the micro switch elastic trigger arm.

[0049] The first and second microswitches are respectively connected to the switch input interface of the three-in-one control circuit module 9. The second microswitch can also be connected to the high-temperature opening terminal of the electric actuator through a hardware forced opening branch composed of relay contacts, transistor switches, or logic isolators. The hardware forced opening branch is isolated from the air-regulating drive interface of the three-in-one control circuit module 9 and gives priority to the high-temperature opening signal of the second microswitch. The electric actuator is equipped with a limit switch corresponding to the predetermined high-temperature air-guiding position. The limit switch is used to cut off the drive circuit of the electric actuator in the direction of high-temperature air-guiding. When the second microswitch is triggered and the vehicle power supply is normal, the hardware forced opening branch can drive the air-regulating mechanism 13 to move towards the predetermined high-temperature air-guiding position without relying on the main control program, and stop the electric actuator after the limit switch is activated. When the whole machine is powered off, the hardware forced opening branch does not provide driving force.

[0050] An insulation layer can be installed on the outside of the heat exchange tube 503 and the corresponding pipes. A drainage path can be installed below the heat dissipation module 5. A moisture-proof coating can be installed on the surface of the three-in-one control circuit module 9 to reduce the risk of condensation affecting the circuit module.

[0051] The air regulating mechanism 13 includes an air regulating plate, which has at least a closed anti-backflow position, a normal air guiding position, a medium-temperature air guiding position, and a high-temperature air guiding position. In the closed anti-backflow position, the air regulating plate reduces the backflow of gas in the air inlet cavity to the air outlet cavity. The connection opening corresponding to the normal air guiding position, the medium-temperature air guiding position, and the high-temperature air guiding position increases sequentially.

[0052] When neither the first nor the second microswitch is triggered, the air regulating plate remains in its normal airflow position. When only the first microswitch is triggered, the air regulating plate rotates to the medium-temperature airflow position. When both microswitches are triggered, the air regulating plate rotates to the high-temperature airflow position, and the three-in-one control circuit module 9 opens the hot air bypass chamber, closes the fragrance chamber, and increases the speed of the fan 14. When the temperature drops, the two microswitches release sequentially, and the air regulating plate resets accordingly.

[0053] The high-temperature trigger signal generated by the second micro switch takes priority over the medium-temperature trigger signal of the first micro switch, the normal adjustment signal of the temperature sensor, and the user's fragrance release command. After the second micro switch is de-triggered and the temperature of the heat dissipation module 5 drops to the preset recovery range, the control module restores the corresponding fragrance cavity according to the working state before the high-temperature trigger or the current user command.

[0054] In this embodiment, as Figure 2 and Figure 3 As shown, the mounting bracket 3 is installed inside the front housing 1. The mounting bracket 3 can be made of plastic. The upper part of the mounting bracket 3 is provided with multiple cavities. In this embodiment, the upper part of the mounting bracket 3 is provided with three cavities, two of which are used to install the fragrance component 4, and the other cavity is an empty cavity that forms a hot air bypass cavity. Each cavity has ventilation holes at the top and bottom. The top ventilation hole is connected to the air inlet cavity at the top of the front housing 1, and the bottom ventilation hole faces the air inlet side of the fan 14.

[0055] The fragrance component 4 is detachably installed in the corresponding cavity. The fragrance component 4 may include a fragrance box, a fragrance carrier core and a sealing structure. The fragrance carrier core may be made of porous ceramic, absorbent cotton, fiber cotton or porous plastic material, used to absorb or carry fragrance materials. An annular sealing ring or elastic sealing gasket may be set between the fragrance component 4 and the cavity to reduce the leakage of fragrance gas or cross-contamination of odors in the unselected cavity. A hollow guide structure may be set in the hot air bypass cavity so that the airflow entering the cavity does not pass through the fragrance component 4, but flows directly to the air inlet side of the fan 14. The hollow guide structure may be set as a hollow guide tube, a guide grille or a guide channel with sound-absorbing ribs.

[0056] In this embodiment, as Figure 3 and Figure 4 As shown, the fan 14 is installed at the lower part of the mounting frame 3. The fan 14 can be a centrifugal fan or an axial fan, preferably a centrifugal fan with a compact structure and stable air output. The air inlet side of the fan 14 faces the bottom ventilation holes of multiple cavities, and the air outlet side of the fan 14 corresponds to the air outlet on the front housing 1. When the fan 14 is working, it can form a negative pressure at the lower part of the mounting frame 3, so that the airflow enters the opened cavity from the upper air inlet cavity, then enters the fan 14 through the bottom ventilation holes, and finally is discharged from the air outlet of the front housing 1.

[0057] The fan 14 can be a DC brushless centrifugal fan, whose speed is adjusted by the three-in-one control circuit module 9: when releasing fragrance, it runs at the first speed to meet the needs of fragrance carrying and basic heat dissipation; when heat dissipation is prioritized, the hot air bypass chamber is opened and it runs at a second speed higher than the first speed; when shutting down for cleaning, the fragrance chamber is closed, the hot air bypass chamber is opened, and it runs at the preset cleaning speed before stopping.

[0058] Each cavity is equipped with a corresponding opening and closing mechanism 12, which is slidably mounted on the mounting bracket 3. Each opening and closing mechanism 12 includes an upper sealing block, a lower sealing block, and a connecting piece connecting the upper sealing block and the lower sealing block. The upper sealing block is used to close or open the top ventilation hole of the corresponding cavity, and the lower sealing block is used to close or open the bottom ventilation hole of the corresponding cavity. The upper sealing block and the lower sealing block can move up and down synchronously with the connecting piece. When the opening and closing mechanism 12 is in the open position, the upper sealing block and the lower sealing block avoid the corresponding ventilation hole, allowing airflow to pass through the cavity. When the opening and closing mechanism 12 is in the closed position, the upper sealing block and the lower sealing block respectively cover the top ventilation hole and the bottom ventilation hole of the corresponding cavity, thereby blocking the airflow channel of the cavity. A flexible sealing layer can be provided on the sealing contact surface of the upper sealing block and the lower sealing block to improve the sealing effect.

[0059] In this embodiment, as Figure 3 and Figure 4 As shown, the drive mechanism 6 is mounted on the partition plate 11. The drive mechanism 6 can be a micro motor or a geared motor. Its output end passes through the partition plate 11 and is connected to the transmission mechanism 7. The transmission mechanism 7 is a worm gear. The adjustment mechanism 8 includes a rotating shaft and a worm wheel set on the rotating shaft. The worm wheel meshes with the worm gear. The rotating shaft is rotatably mounted in the mounting bracket 3. Multiple linkage blocks are set on the rotating shaft. Each linkage block corresponds to an opening and closing mechanism 12.

[0060] The lower sealing block is equipped with a linkage component, and each linkage block is equipped with a track. The linkage component is slidably connected to the corresponding track. The track can be set as an arc track, an eccentric track, or a guide groove with varying height. The track shapes or track phases of multiple linkage blocks are different, so that when the rotating shaft rotates to different angle positions, the up and down movement states of each opening and closing mechanism 12 are different, thereby realizing the selective opening and closing of different cavities. Since the worm gear and worm are meshed, the adjusting mechanism 8 has good self-locking characteristics, which can reduce the risk of the cavity being opened or closed accidentally due to vehicle vibration.

[0061] An angle encoder or position detection device can be installed on the rotating shaft. The angle encoder is electrically connected to the three-in-one control circuit module 9 and is used to detect the rotation angle of the rotating shaft. The three-in-one control circuit module 9 determines whether the corresponding cavity is fully opened based on the feedback from the angle encoder, thereby controlling the drive mechanism 6 to stop or continue rotating.

[0062] In this embodiment, the rotating shaft has multiple working angle positions: at the first angle position, one fragrance chamber is open; at the second angle position, another fragrance chamber is open; at the third angle position, the hot air bypass chamber is open and both fragrance chambers are closed, thereby realizing fragrance selection and high-temperature bypass.

[0063] The three-in-one control circuit module 9 includes a main control unit, a power management unit, a load drive unit, a signal acquisition unit, and a communication unit. The load drive unit is connected to the fan 14, the drive mechanism 6, the air regulating mechanism 13, and the heat exchange medium control component. The signal acquisition unit is connected to the temperature sensor, the angle encoder, the first micro switch, and the second micro switch. Each electrical component is selected according to its installation environment in the vehicle.

[0064] During assembly, the vertical duct 502 and heat exchange tube 503 are first installed on the phase change material encapsulation shell and sealed. Then, phase change material is poured into the encapsulation shell and expansion space is reserved. Subsequently, the open-type elastic pressure ring 504 is installed on the pressure ring mounting section of the vertical duct 502 that extends out of the encapsulation shell. The positions of the first micro switch and the second micro switch are adjusted according to the load displacement of the thermally induced outward-expanding arm 50404 to ensure that the two micro switches can be triggered sequentially.

[0065] In another embodiment, the upper part of the mounting frame 3 is provided with four cavities, three of which are used to install fragrance components 4 respectively, and the other cavity is an empty hot air bypass cavity with a hollow guide structure; the three fragrance components 4 are respectively filled with fragrance carrier cores with different evaporation rates per unit time, so as to correspond to low concentration release, medium concentration release and high concentration release respectively.

[0066] The adjusting mechanism 8 has four linkage blocks on its rotating shaft. The track shape or phase of the four linkage blocks corresponds to the opening and closing mechanism 12 of the four cavities, so that when the rotating shaft is rotated to the first angle position, only the first fragrance cavity is opened; when it is rotated to the second angle position, only the second fragrance cavity is opened; when it is rotated to the third angle position, only the third fragrance cavity is opened; and when it is rotated to the fourth angle position, only the hot air bypass cavity is opened and all three fragrance cavities are closed.

[0067] The three-in-one control circuit module 9 controls the drive mechanism 6 to rotate the adjustment mechanism 8 to the corresponding angle position according to the concentration level command input by the user, and at the same time adjusts the speed of the fan 14 so that the speed of the fan 14 corresponding to the low concentration level is lower than that of the fan 14 corresponding to the medium concentration level, the speed of the fan 14 corresponding to the medium concentration level is lower than that of the fan corresponding to the high concentration level, so that the fragrance gas is released with a smaller air volume at the low concentration level, a medium air volume at the medium concentration level, and a large air volume at the high concentration level.

[0068] When the temperature of the heat dissipation module 5 rises and the second micro switch is triggered, the three-in-one control circuit module 9 forcibly switches the adjustment mechanism 8 to the fourth angle position, opens the hot air bypass chamber and closes all three fragrance chambers, and at the same time increases the speed of the fan 14, so that the high-temperature airflow bypasses all fragrance components 4 and is used for heat dissipation first, avoiding excessive evaporation of fragrance due to high temperature; after the temperature drops to the preset recovery range, the control module restores the adjustment mechanism 8 to the corresponding first angle position, second angle position or third angle position according to the concentration level currently selected by the user, and runs the fan 14 at the corresponding speed.

[0069] This implementation uses three independent fragrance chambers corresponding to low, medium, and high concentration levels, respectively, and with the gradual adjustment of the fan speed, it achieves precise graded control of fragrance release concentration, while retaining the heat dissipation priority protection function of the hot air bypass chamber under high temperature conditions.

[0070] Working principle of the invention: When in use, the three-in-one control circuit module 9 controls the drive mechanism 6, fan 14, air conditioning mechanism 13 and heat exchange medium control components to work according to user instructions, load status and the temperature of heat dissipation module 5.

[0071] When a certain fragrance needs to be released, the drive mechanism 6 drives the adjustment mechanism 8 to rotate through the transmission mechanism 7, so that the upper and lower sealing blocks of the target fragrance cavity open synchronously and close the remaining cavities. After the fan 14 is started, the outside air enters through the air inlet of the rear housing 2, flows through the vertical air duct 502 and the heat dissipation plate 10 and enters the fragrance cavity, carrying the fragrance gas and being discharged through the air outlet of the front housing 1.

[0072] When heat dissipation is required but fragrance release is not needed, the regulating mechanism 8 opens the hot air bypass chamber and closes the two fragrance chambers, allowing airflow to enter the fan 14 directly through the hot air bypass chamber, thereby bypassing the fragrance component 4.

[0073] When the temperature of the heat dissipation module 5 rises, the thermally induced expansion arm 50404 drives the opening expansion end 50403 to expand outward, reducing the radial clamping force of the opening expansion elastic pressure ring 504 on the vertical air duct 502 and increasing its flow cross-sectional area. The thermally induced expansion arm 50404 sequentially triggers the first micro switch and the second micro switch, causing the air regulating plate to sequentially rotate from the normal air guiding position to the medium-temperature air guiding position and the high-temperature air guiding position. When the second micro switch is triggered, the control module opens the hot air bypass cavity, closes the fragrance cavity, and increases the speed of the fan 14. When the cold end of the vehicle refrigerator is available and the heat exchange conditions are met, the low-temperature heat exchange medium flows through the heat exchange tube 503 to exchange heat with the phase change material.

[0074] When the temperature of the heat dissipation module 5 decreases, the thermally extended arm 50404 retracts, the second micro switch and the first micro switch are released in sequence, and the air regulating plate and the open-type elastic pressure ring 504 are reset accordingly; after the temperature decreases to the preset recovery range, the control module closes the hot air bypass cavity and restores the corresponding fragrance cavity according to the current user command.

[0075] When the temperature of the heat dissipation module 5 is low or the load is small, the open-type elastic pressure ring 504 remains in a tightened state, so that the vertical air duct 502 retains the basic heat dissipation channel while reducing the heat dissipation too quickly. Some of the residual heat from the electronic control can enter the fragrance cavity with the airflow to assist the fragrance evaporation.

[0076] When the vehicle is turned off or the fragrance function is turned off, the control module closes the fragrance chamber, opens the hot air bypass chamber, and runs the fan 14 for a preset time; after cleaning is completed, the hot air bypass chamber is closed and the air regulating mechanism 13 is turned to the closed anti-backflow position.

[0077] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A vehicle-grade three-in-one intelligent control module for in-vehicle equipment, comprising a front housing (1), a rear housing (2), and a heat sink (10), characterized in that, Also includes: Mounting bracket (3) is installed inside the front housing (1). The upper part of the mounting bracket (3) is provided with multiple cavities. At least some of the cavities are used to install fragrance components (4). At least one of the cavities forms a hot air bypass cavity. The rear housing (2) is installed at the rear end of the front housing (1). The bottom of the rear housing (2) is provided with an air inlet, and the top of the rear housing (2) is provided with an air outlet. A heat dissipation module (5) is disposed between the heat dissipation plate (10) and the partition plate (11). The heat dissipation module (5) includes a heat dissipation cavity (501), several vertical air ducts (502) and a heat exchange tube (503). The vertical air ducts (502) pass through the heat dissipation cavity (501) to form an electrically controlled heat dissipation air duct. The heat dissipation cavity (501) is encapsulated with a phase change material. The heat exchange tube (503) passes through the heat dissipation cavity (501) and is connected to the cold end heat exchange branch of the vehicle refrigerator. A fan (14) is installed at the lower part of the mounting bracket (3) to drive airflow through the electronically controlled heat dissipation duct to the cavity of the mounting bracket (3) and finally discharged from the air outlet of the front housing (1). The three-in-one control circuit module (9) is installed in the rear housing (2) and is used to control the loads related to the car air freshener, car refrigerator and car oxygen generator. The heat sink (10) is installed inside the rear housing (2) and is located on the side of the three-in-one control circuit module (9) near the partition plate (11); The partition plate (11) is installed inside the front housing (1) and located on the rear side of the mounting bracket (3); The air regulating mechanism (13) is located in the flow channel between the air outlet cavity and the air inlet cavity at the top of the front housing (1); The opening and closing mechanism (12) is slidably installed on the mounting bracket (3) and is used to open and close the ventilation holes of the corresponding cavity; The adjustment mechanism (8) is rotatably mounted on the mounting bracket (3) and linked with the opening and closing mechanism (12) to control the opening and closing state of each cavity.

2. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 1, characterized in that: Each cavity is provided with ventilation holes at the top and bottom; the air inlet side of the fan (14) faces the bottom ventilation holes of the multiple cavities, and the air outlet side of the fan (14) corresponds to the air outlet on the front housing (1); the air regulating mechanism (13) is used to adjust the communication state between the air outlet cavity and the air inlet cavity, or to reduce the backflow of gas in the air inlet cavity to the air outlet cavity in the closed state.

3. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 1, characterized in that: At least a portion of the vertical duct (502) is fitted with an open-type outward-expanding elastic pressure ring (504) on its outer side, the open-type outward-expanding elastic pressure ring (504) being located at the top of the heat dissipation module (5); at least one of the open-type outward-expanding elastic pressure rings (504) has a thermotropic outward-expanding arm (50404) that moves in a predetermined direction as the temperature rises; a first micro switch and a second micro switch are sequentially arranged on the heat dissipation module (5) along the outward-expanding movement direction of the free end of the thermotropic outward-expanding arm (50404); the air conditioning mechanism (13) includes an electric actuator, the first micro switch, the second micro switch and the electric actuator are electrically connected to the three-in-one control circuit module (9) respectively, the phase change material is sealed in the encapsulation housing, the vertical duct (502) has a pressure ring mounting section extending out of the encapsulation housing, the open-type outward-expanding elastic pressure ring (504) is fitted on the outside of the pressure ring mounting section and is isolated from the encapsulation space of the phase change material.

4. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 3, characterized in that: When the temperature of the heat dissipation module (5) rises, the thermally induced outward expansion arm (50404) reduces the radial clamping force of the open outward expansion elastic pressure ring (504) on the vertical air duct (502), and triggers the first micro switch and the second micro switch in sequence with the outward expansion displacement, so that the three-in-one control circuit module (9) controls the air regulating mechanism (13) to increase the connection opening between the air outlet cavity and the air inlet cavity in sequence; When the second micro switch is triggered, the three-in-one control circuit module (9) also controls the adjustment mechanism (8) to open the hot air bypass cavity and close the cavity where the fragrance component (4) is installed, while increasing the speed of the fan (14); The second micro switch is also connected to the electric actuator via a hardware forced opening branch; the air regulating mechanism (13) has a predetermined high-temperature air guiding position, the connection opening corresponding to the predetermined high-temperature air guiding position is greater than the connection opening corresponding to the normal air guiding position and the medium-temperature air guiding position, and the electric actuator is provided with a limit switch corresponding to the predetermined high-temperature air guiding position; when the vehicle power supply is normal and the second micro switch is triggered, the hardware forced opening branch can bypass the main control program of the three-in-one control circuit module (9), drive the electric actuator to move in the direction of increasing the connection opening between the air outlet cavity and the air inlet cavity, and stop the electric actuator by the limit switch when the air regulating mechanism (13) reaches the predetermined high-temperature air guiding position.

5. The automotive-grade three-in-one vehicle-mounted equipment intelligent control module according to claim 3, characterized in that: The open-ended elastic pressure ring (504) is an elastic annular clamping member with a notch. Multiple segmented clamping ribs (50401) are provided at intervals on its inner circumference. It abuts against the outer circumferential wall of the vertical air duct (502) in a low-temperature state. The opening of the open-ended elastic pressure ring (504) forms a guide port (50402) and an open-ended end (50403). The thermo-expanding arm (50404) is connected to the open-ended end (50403). The thermo-expanding arm (50404) is a thermo-bimetallic sheet, a strip or sheet shape memory alloy part, or a thermo-flexible elastic sheet formed by composite materials with different thermal expansion coefficients. The open-ended end (50403) is provided with a thinning deformation groove (50405) near the ring body and a limiting stop (50406) is provided on the outside.

6. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 1, characterized in that: The low-temperature heat exchange medium provided by the cold end of the vehicle refrigerator flows only inside the heat exchange tube (503) and is isolated from the phase change material in the heat dissipation cavity (501) for heat exchange. The heat dissipation cavity (501) is provided with an encapsulation shell, the phase change material is sealed in the encapsulation shell, the vertical air duct (502) passes through the encapsulation shell and is in thermal contact with the phase change material, and the heat exchange tube (503) is an S-shaped, serpentine or U-shaped tube, and passes through the encapsulation shell and is in thermal contact with the phase change material.

7. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 1, characterized in that: The upper part of the mounting bracket (3) is provided with three cavities, two of which are for installing fragrance components (4), and the other is an empty hot air bypass cavity with a hollow guide structure; the opening and closing mechanism (12) includes an upper sealing block, a lower sealing block and a connector. The upper sealing block and the lower sealing block are used to close or open the top and bottom ventilation holes of the corresponding cavities, and can move synchronously with the connector.

8. The automotive-grade three-in-one vehicle-mounted device intelligent control module according to claim 7, characterized in that: It also includes a drive mechanism (6) and a transmission mechanism (7); the adjustment mechanism (8) includes a rotating shaft and a worm gear set on the rotating shaft, the rotating shaft is provided with multiple linkage blocks, each linkage block is provided with a track with different track shape or phase; the lower closed block is provided with a linkage component, the transmission mechanism (7) is a worm gear meshing with the worm gear, the linkage component is slidably connected to the corresponding track; the rotating shaft is provided with an angle encoder electrically connected to the three-in-one control circuit module (9).

9. The automotive-grade three-in-one vehicle-mounted equipment intelligent control module according to claim 1, characterized in that: The heat sink (10) is installed inside the rear housing (2), located on the side of the three-in-one control circuit module (9) near the partition plate (11), and in thermal contact with the heat dissipation module (5); the rear housing (2) has an air inlet at the bottom and an air outlet at the top; when the fan (14) is working, the airflow enters the electronically controlled heat dissipation duct through the air inlet of the rear housing (2), flows through the vertical air duct (502) of the heat dissipation module (5) and exchanges heat with the heat sink (10), and then enters the air outlet, the air inlet and the opened cavity in sequence, and is finally discharged from the air outlet of the front housing (1).

10. The automotive-grade three-in-one vehicle-mounted equipment intelligent control module according to claim 3, characterized in that: When neither the first micro switch nor the second micro switch is triggered, the three-in-one control circuit module (9) controls the air regulating mechanism (13) to be in the normal air guiding position; when only the first micro switch is triggered, the air regulating mechanism (13) is controlled to be in the medium-temperature air guiding position; when both switches are triggered, the air regulating mechanism (13) is controlled to be in the high-temperature air guiding position, and the connection opening corresponding to the normal air guiding position, the medium-temperature air guiding position and the high-temperature air guiding position increases sequentially.

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