Vehicle-mounted infrared control skin device based on active refrigeration and water cooling circulation

Abstract

The utility model relates to a vehicle-mounted infrared control skin device based on active refrigeration and water cooling circulation, which is characterized in that a skin module, a pipeline system, a water cooling unit module and an electric cabinet work cooperatively, and the skin module adopts a sandwich unit structure of a vapor chamber, a TEC refrigeration sheet and a heat dissipation cooling plate and actively inhibits infrared radiation; the pipeline system covers a high-heat area of the vehicle through four S-shaped cooling water pipes; the water cooling unit module forms closed-loop cooling circulation through a cold box refrigerating machine, a circulating water pump and a filter; and the electric control box is integrated with a multi-channel temperature control system, and independently regulates and controls the temperature of each group of skin units through a solid-state relay. The device effectively shields the infrared characteristics of the vehicle through precise temperature control, and remarkably reduces the thermal detection probability.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle thermal management and infrared stealth technology, specifically relating to an on-board infrared control skin device based on active cooling and water cooling cycle. Background Technology

[0002] With the widespread application of infrared imaging guidance technology in military reconnaissance, military vehicles generate strong infrared radiation characteristics due to the significant temperature rise of heat sources such as engines, making them highly susceptible to detection by enemy infrared detection equipment, leading to target exposure and attack. Although existing technologies attempt to reduce the infrared signature of vehicles through low-emissivity coatings (such as aluminized fabrics and photonic crystal structures) or thermal shielding methods (such as heat-insulating materials), these methods are mostly passive designs and cannot dynamically adjust infrared radiation characteristics according to ambient temperature. Furthermore, they are difficult to balance radar stealth, mechanical performance, and thermal management requirements in complex electromagnetic environments. For example, while traditional low-emissivity coatings can reduce thermal radiation, their static emissivity cannot be dynamically adjusted with ambient temperature, and the high reflectivity of metal-based coatings conflicts with radar stealth requirements, easily exposing the target. On the other hand, single heat-insulating materials can only delay heat transfer and cannot actively control surface temperature and infrared radiation characteristics. These solutions are difficult to adapt to dynamic battlefield environments, leading to uncontrolled infrared radiation contrast between the vehicle and the background, increasing the risk of exposure. Utility Model Content

[0003] To address the aforementioned issues, this application proposes an onboard infrared control skin device based on active cooling and water cooling circulation. This device can effectively conceal the infrared radiation characteristics of a vehicle, reducing the probability of detection and providing an innovative solution for achieving vehicle stealth. The specific solution is as follows:

[0004] This application provides an in-vehicle infrared control skin device based on active cooling and water cooling circulation, mainly including: a skin module, a piping system, a water-cooled unit module, and an electrical control box. The skin module is installed on the vehicle's hood and is used to change the infrared radiation characteristics of the heat-generating parts of the hood. The skin module consists of multiple distributed skin units. Each skin unit adopts a sandwich structure of a heat spreader, a TEC cooling plate, and a heat dissipation cooling plate stacked in sequence. The upper heat spreader serves as the infrared characteristic surface and is attached to the cold surface of the TEC cooling plate, while the lower heat dissipation cooling plate serves as the heat dissipation surface and is attached to the hot surface of the TEC cooling plate. The piping system includes a cooling water pipe I distributed between the heat dissipation cooling plate and the TEC cooling plate, a cooling water pipe II on the left fender of the vehicle, and a cooling water pipe III on the right fender. The cooling water pipes on the panel (number three) and the front bumper (number four) are arranged in an S-shape and connected at both ends. The water-cooled unit module includes a cold box, a circulating water pump, and a filter. The cold box contains a built-in refrigeration unit. One end of the collected cooling water pipe is connected to the inlet pipe of the cold box, and the other end is connected to the outlet pipe. After being cooled in the cold box, the cooling water is pressurized by the circulating water pump and sent to the filter. After filtration, the water enters the piping system and finally flows back to the cold box through the outlet pipe, forming a closed-loop cooling cycle. The electrical control box integrates a temperature controller, a solid-state relay, and a 485 hub to power the water-cooled unit module and the skin module, enabling multi-channel temperature acquisition and dynamic adjustment to control the temperature changes of the skin module. The water-cooled unit module and the electrical control box are installed in the trunk of the car.

[0005] Furthermore, the several skin units are set as a group and connected in series. Each group of skin units has a boss at the center of the back of the heat spreader plate. The boss fixes the temperature sensor and is encapsulated with heat insulation cotton to ensure the accuracy and consistency of temperature acquisition. Heat insulation cotton is set under the hood to isolate the engine heat from interfering with the skin module.

[0006] Furthermore, the skin module is fixed by aluminum alloy reinforcing ribs welded to the bottom of the hood. Threaded holes are opened on the surface of the reinforcing ribs. After the skin module is installed by bolts, the edges are sealed with thermally conductive silicone and the gaps are filled and polished to meet the IP56 protection level.

[0007] Furthermore, the cooling water pipe in the gap between the heat dissipation cooling plate and the TEC cooling chip is a bent copper pipe. During installation, the bottom surface of the cooling water pipe in contact with the vehicle body is coated with high thermal conductivity silicone, the top surface in contact with the heat dissipation cooling plate is filled with thermal conductivity silicone, and it is fixed at intervals along the pipe route by stainless steel clamps.

[0008] Furthermore, the circulating water pump of the water-cooled unit module is made of stainless steel. After being cooled by the cold box, the cooling water is divided into multiple branch pipes and delivered to the cooling water pipes of the skin module, left fender, right fender and front surround respectively. The return water is collected and then circulated again by the cold box for secondary cooling.

[0009] Furthermore, the electrical control box is equipped with multiple temperature controllers and multiple solid-state relays, each independently controlling one skin unit. The temperature can be manually set via the temperature controller or via RS485 command from the host computer, and the output of the solid-state relays can be adjusted to control the operation of the TEC cooling chip, thereby achieving rapid cooling of the skin unit in a short time.

[0010] Furthermore, the electrical control box adopts a waterproof enclosure, the door is equipped with a mechanical sealing strip, the interface uses a waterproof connector, and meets IP44 protection requirements. The cables inside the box are fixed by cable trays, and steel wire rope shock absorbers are installed at the bottom or back panel of the enclosure to adapt to the vehicle vibration environment.

[0011] The beneficial effects of this utility model are as follows: This utility model discloses an in-vehicle infrared control skin device based on active cooling and water cooling circulation. It adopts a sandwich skin structure of heat dissipation plate and TEC cooling plate to achieve rapid temperature control. Combined with the high thermal conductivity of copper cooling water pipes and double-sided thermal conductive silicone design (bottom surface shock absorption and wear prevention, top surface enhanced heat conduction), it significantly improves the temperature uniformity and stability of the skin surface. The stainless steel clamp fixing scheme works in conjunction with the vehicle body anti-vibration structure to ensure the reliability of the pipeline under complex road conditions. The distributed water cooling system covers key areas such as the hood, fenders and front bumper. With the closed-loop water cooling circulation for efficient heat dissipation, the infrared radiation characteristics of high-temperature parts of the vehicle are greatly weakened. The modular components support flexible adaptation to different vehicle models. The flexible characteristics of copper pipes fit closely to the curved surface of the vehicle body. The independent multi-channel temperature control of the electronic control system realizes dynamic infrared characteristic adjustment. The vehicle utilizes intelligent temperature fusion technology to ensure that the infrared signal is highly matched with the natural environmental background, effectively reducing the risk of detection and enhancing stealth combat capabilities. The integrated layout of the trunk ensures the integrity of vehicle functions, and the overall structure is compact and easy to maintain, providing an efficient solution for vehicle-mounted infrared stealth. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall process of the vehicle-mounted infrared control skin device provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the installation structure of some skin modules on the vehicle hood in an embodiment of this utility model.

[0015] Figure 3 This is a schematic diagram of the assembly of a single skin unit in an embodiment of this utility model.

[0016] Figure 4 This is a schematic diagram showing the distribution of cooling water pipes on the surface of the vehicle body in an embodiment of this utility model.

[0017] Symbols in the diagram: 1. Skin module, 1.1. Hood, 1.2. Skin unit, 1.2.1. Heat sink, 1.2.2. TEC cooling plate, 1.2.3. Cooling plate, 1.2.4. Boss, 1.3. Temperature sensor, 1.4. Insulation cotton, 2. Piping system, 2.1. Cooling water pipe one, 2.2. Cooling water pipe two, 2.3. Cooling water pipe three, 2.4. Cooling water pipe four, 3. Water-cooled unit module, 3.1. Cold box, 3.1.1. Refrigeration unit, 3.2. Circulating water pump, 3.3. Filter, 4. Electrical control box, 4.1. Temperature controller, 4.2. Solid state relay, 4.3. 485 hub. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0019] As shown in the figure, this utility model relates to an in-vehicle infrared control skin device based on active cooling and water cooling circulation, which mainly includes a skin module 1, a pipeline system 2, a water-cooled unit module 3, and an electrical control box 4.

[0020] The skin module 1 is mounted on the vehicle hood 1.1 and is used to alter the infrared radiation characteristics of the heat-generating components of the hood 1.1. The skin module 1 consists of multiple skin units 1.2 arranged in a distributed manner. Each skin unit adopts a sandwich structure consisting of a heat spreader 1.2.1, a TEC cooling plate 1.2.2, and a heat dissipation cooling plate 1.2.3 stacked sequentially. The upper heat spreader 1.2.1 serves as the infrared characteristic surface and is in contact with the cold surface of the TEC cooling plate 1.2.2. The lower heat dissipation cooling plate 1.2.3 serves as the heat dissipation surface and is in contact with the hot surface of the TEC cooling plate 1.2.2. The piping system 2 includes a cooling water pipe 2.1 distributed between the heat dissipation cooling plate 1.2.3 and the TEC cooling plate 1.2.2, a cooling water pipe 2.2 on the left fender, a cooling water pipe 2.3 on the right fender, and a cooling water pipe 2.4 on the front bumper. The four cooling water pipes are arranged in an S-shape in parallel, and one end of the combined cooling water pipe is connected to the cooler box. The inlet pipe is connected to the outlet pipe at the other end. When installing the cooling water pipe 2.1, the bottom surface in contact with the vehicle body is coated with high thermal conductivity silicone, and the top surface in contact with the heat dissipation cooling plate 1.2.3 is filled with thermally conductive silicone. It is then fixed at intervals along the pipe using stainless steel clamps. The water-cooled unit module 3 includes a cold box 3.1, a circulating water pump 3.2, and a filter 3.3. The cold box 3.1 has a built-in chiller 3.1.1 that cools the cooling water. After cooling, the water flows through the circulating water pump 3.2 for pressurization. The filter 3.3 purifies the water, which is then delivered to the four cooling water pipes through the inlet pipe. The return water is then returned to the cold box 3.1 for secondary cooling through the outlet pipe, forming a closed-loop cycle. The electrical control box 4 integrates a temperature controller 4.1, a solid-state relay 4.2, and a 485 hub 4.3 to supply power to the water-cooled unit module 3 and the skin module 1, enabling multi-channel temperature acquisition and dynamic adjustment, thereby controlling the temperature change of the skin module 1. The water-cooled unit module 3 and the electrical control box 4 are installed in the trunk of the car.

[0021] The plurality of skin units 1.2 are grouped together and connected in series. Each group of skin units 1.2 has a boss 1.2.4 at the center of the back of the heat spreader 1.2.1. The boss 1.2.4 fixes the temperature sensor 1.3 and is encapsulated with heat insulation cotton to ensure the accuracy and consistency of temperature acquisition. Heat insulation cotton 1.4 is provided under the hood 1.1 to isolate the engine heat from interfering with the skin module 1.

[0022] The skin module 1 is fixed by an aluminum alloy reinforcing rib welded to the bottom of the hood 1.1. Threaded holes are opened on the surface of the reinforcing rib. After the skin module 1 is installed by bolts, the edges are sealed with thermally conductive silicone and the gaps are filled and polished to meet the IP56 protection requirements.

[0023] The circulating water pump 3.2 of the water-cooled unit module 3 is made of stainless steel. After being cooled by the cold box 3.1, the cooling water is divided into multiple branch pipes and delivered to the cooling water pipes of the skin module 1, the left fender, the right fender and the front surround respectively. The return water is collected and then circulated again by the cold box 3.1 for secondary cooling.

[0024] The electrical control box 4 is equipped with multiple temperature controllers 4.1 and multiple solid-state relays 4.2. Each relay independently controls a skin unit 1.2. The temperature can be manually set by the temperature controller 4.1 or by RS485 command from the host computer. The output of the solid-state relay 4.2 is adjusted to control the operation of the TEC cooling chip, thereby enabling the skin unit 1.2 to be rapidly cooled to the set temperature in a short time.

[0025] The electrical control box 4 adopts a waterproof structure, the box door is equipped with a mechanical sealing strip, the interface uses a waterproof connector, and meets the requirements of IP44 protection. The cables inside the box are fixed by cable trays, and steel wire rope shock absorbers are installed at the bottom or back panel of the box to adapt to the vehicle vibration environment.

[0026] The system operates as follows: After power-on, the water-cooled unit module 3 starts the circulating water pump 3.2 to deliver cooling water to each pipeline. The electrical control box 4 collects temperature data in real time through temperature sensors 1.3 integrated on the back of each skin unit 1.2, dynamically adjusting the operating power of the TEC cooling chip 1.2 to bring the surface temperature of the heat spreader 1.2.1 close to the set target value. Simultaneously, the water-cooled circulation system efficiently removes heat from the TEC hot end through copper cooling water pipes tightly attached to the heat dissipation cooling plate 1.2.3, eliminating local temperature differences on the skin surface. The system automatically adjusts the cooling intensity according to the ambient temperature: rapid cooling at high temperatures and stable cooling at low temperatures. Multi-channel independent temperature control technology ensures uniform temperature distribution across the entire skin area, achieving dynamic fusion of infrared radiation characteristics and background environment. The modular skin unit 1.2 is installed through a threaded fixing structure of the bottom reinforcing rib of the hood 1.1, supporting the array expansion of the hood 1.1.

[0027] The above description only illustrates certain exemplary embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, substitutions, or improvements that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vehicle-mounted infrared control skin device based on active cooling and water cooling cycle, characterized in that, include: The vehicle comprises a skin module, a piping system, a water-cooled unit module, and an electrical control box. The skin module, mounted on the vehicle's hood, consists of multiple distributed skin units. Each skin unit includes a heat spreader, a TEC (Transmission Control Unit) cooling fin, and a heat dissipation cooling plate stacked sequentially. The heat spreader serves as the infrared signature surface, bonded to the cold side of the TEC cooling fin, while the heat dissipation cooling plate serves as the heat dissipation surface, bonded to the hot side of the TEC cooling fin. The piping system includes four cooling water pipes: a first pipe located between the heat dissipation cooling plate and the TEC cooling fin; a second pipe on the left fender; a third pipe on the right fender; and a fourth pipe on the front bumper. Arranged in an S-shape with both ends connected, the water-cooled unit module includes a cold box, a circulating water pump, and a filter. The cold box contains a built-in chiller. One end of the collected cooling water pipe is connected to the inlet pipe of the cold box, and the other end is connected to the outlet pipe. After being cooled in the cold box, the cooling water is pressurized by the circulating water pump and sent to the filter. After purification, it enters the pipeline system and finally flows back to the cold box through the outlet pipe, forming a closed-loop cooling cycle. The electrical control box integrates a temperature controller, a solid-state relay, and a 485 hub to power the water-cooled unit module and the skin module, realizing multi-channel temperature acquisition and dynamic adjustment. The water-cooled unit module and the electrical control box are installed in the trunk of the car.

2. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The several skin units are configured as a group and connected in series. Each group of skin units has a boss at the center of the back of the heat spreader plate. The boss fixes the temperature sensor and is encapsulated with heat insulation cotton. Heat insulation cotton is provided under the hood.

3. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The skin module is fixed by aluminum alloy reinforcing ribs welded to the bottom of the hood. Threaded holes are opened on the surface of the reinforcing ribs. After the skin module is installed with bolts, the edges are sealed with thermally conductive silicone and the gaps are filled and polished to meet the IP56 protection level.

4. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The cooling water pipe in the gap between the heat dissipation cooling plate and the TEC cooling chip is a bent copper pipe. During installation, the bottom surface of the cooling water pipe is coated with high thermal conductivity silicone, the top surface is filled with thermal conductivity silicone, and it is fixed at intervals along the pipe route by stainless steel clamps.

5. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The circulating water pump of the water-cooled unit module is made of stainless steel. After being cooled by the cold box, the cooling water is divided into multiple branch pipes and delivered to the cooling water pipes of the skin module, left fender, right fender and front surround respectively. The return water is collected and then circulated again by the cold box for secondary cooling.

6. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The electrical control box is equipped with multiple temperature controllers and multiple solid-state relays. Each relay independently controls one skin unit. The temperature can be set manually via the temperature controller or via RS485 command from the host computer, and the output of the solid-state relay can be adjusted to achieve rapid cooling of the skin unit.

7. The vehicle-mounted infrared control skin device based on active cooling and water cooling cycle according to claim 1, characterized in that: The electrical control box is waterproof, with a mechanical seal on the door and waterproof connectors at the interface, meeting IP44 protection level. The cables inside the box are fixed by cable trays, and steel wire rope shock absorbers are installed at the bottom or back panel of the box.

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