Modularized LED plant light supplement lamp integrated with water-cooling heat dissipation system

Abstract

The utility model relates to the technical field of agricultural facility lighting, and particularly discloses a modularized LED plant light supplementing lamp integrated with a water-cooling heat dissipation system. The lamp comprises a tubular aluminum shell, two parallel copper water-cooled tubes which are embedded into the two side walls of the shell in a press fit mode, at least two LED light source modules which are arranged below the shell and can be independently controlled, end cover sets for packaging the two ends of the shell, a top hook and a control chip. The innovative core is that efficient heat conduction is achieved through an interference press fit structure of an aluminum shell U-shaped groove and a water cooling pipe, and a partitioned independent control framework of a modular light source is matched; the water cooling pipe penetrates through the end cover to form a cooling medium inlet and outlet to be connected with an external circulation system. The control chip dynamically adjusts cooling flow based on feedback of the temperature sensor. According to the structure, the junction temperature of the LED is stabilized to be less than or equal to 65 DEG C, the thickness of the lamp is reduced to be less than 45mm, and the LED lamp has the comprehensive advantages that the heat dissipation efficiency is improved by 40%, the occupied space is reduced by 30%, and the spectrum is supported to accurately adapt to the crop growth stage, and is suitable for large-scale agricultural application.

Description

Technical Field

[0001] This invention relates to the field of agricultural facility lighting technology, specifically to a modular LED plant supplement light with an integrated water-cooling heat dissipation system, which is particularly suitable for plant growth lamps with independently controllable multi-source light sources that achieve efficient heat dissipation and extend LED lifespan through built-in copper cooling water pipes. Background Technology

[0002] LED plant grow lights, which promote plant photosynthesis through specific spectra, have become core equipment in modern agriculture. The core challenge lies in the fact that the dense arrangement of high-power LEDs inevitably generates high heat. For every 10°C increase in junction temperature, LED lifespan decreases by approximately 50%, and luminous efficacy drops by 3-5% (Haitz's Law). Traditional heat dissipation solutions rely on aluminum substrate heat conduction and air convection, but limited by the thermal conductivity of metals (aluminum ≈ 237 W / m·K) and the specific heat capacity of air, lamps above 500W generally experience thermal saturation, leading to accelerated light decay and spectral shift, severely hindering industry upgrades.

[0003] Current mainstream solutions suffer from three limitations: 1. Passive heat dissipation bottleneck: For example, Chinese patent CN210291891U discloses a heat dissipation structure for a high-power LED plant grow light, which uses an aluminum fin array. When the power is >300W, the substrate temperature exceeds 85°C, requiring a forced air cooling system, which leads to dust accumulation, increased energy consumption, and noise pollution (>45dB); 2. Defects of external water cooling: For example, Japanese patent JP2020054540A (publication date 2020-02-20) discloses an LED lighting device for plant cultivation, proposing an external water cooling module connected to the lamps via silicone hoses. This presents risks of pipe aging and leakage, large installation space occupation (an additional 30% volume), and the risk of condensation water corroding the circuits; 3. Insufficient control flexibility: For example, the integrated lamp panel of patent US20210306987A1 (Integrated LED grow light system) cannot be dimmed in different zones, making it difficult to adapt to the spectral requirements of different crops at different growth stages.

[0004] In summary, existing technologies have failed to overcome the following core contradictions: ① It is difficult to achieve both heat dissipation efficiency and structural compactness—air-cooling solutions are limited by heat capacity, while external water cooling sacrifices space reliability; ② Lagging thermal management—traditional solutions can only delay temperature rise and cannot actively reduce the LED junction temperature to the ideal threshold (<65°C); ③ Lack of modular control—fixed spectral output modes are difficult to match the needs of precision agriculture scenarios. Summary of the Invention

[0005] This invention addresses the problems of low heat dissipation efficiency, poor structural reliability, and insufficient control flexibility in existing LED plant grow lights by providing a modular LED plant grow light with an integrated water-cooling system. Its core innovation lies in achieving efficient heat conduction through a press-fitted structure of an aluminum shell and copper water-cooling pipes, and employing a modular light source with independent control architecture, simultaneously solving the requirements for reliable heat dissipation and precise light control within a compact space.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] 1. Integrated water-cooled heat dissipation frame: It adopts an extruded tubular aluminum shell with a U-shaped groove structure with a closed top in cross-section and interlocking grooves on both side walls; two parallel copper water-cooling tubes are pressed into the interlocking grooves by interference fit, and the bottom of the groove and the water-cooling tubes are filled with a layer of thermally conductive silicone grease to eliminate interface thermal resistance; the water-cooling tubes pass through the end caps along the shell axis to form the inlet and outlet of the cooling medium, and are connected to the external circulation system through quick-plug tube joints. The tube joints are equipped with anti-backflow valves to prevent the medium from flowing back.

[0008] 2. Modular light source can be independently controlled: At least two LED light source modules are installed at the bottom of the housing. Each module includes an LED light board, a driver power supply and a mounting base. The mounting base is fixed to the bottom of the housing by a thermally conductive adhesive layer and bolt assembly to ensure mechanical strength and thermal coupling efficiency. A chip is connected to a temperature sensor attached to the back of the LED light board to build a junction temperature feedback closed-loop system to adjust the flow rate of the cooling medium in real time.

[0009] 3. Enhanced Reliability Construction Details: End Cap Interface Protection: The first end cap integrates the power interface and USB data interface, while the second end cap provides a data communication interface. All interfaces are sealed with waterproof sealing rings; Adjustable Suspension Structure: The top of the housing features an axially extending hook mounting section with multiple hook mounting holes. The hooks are detachable and support position adjustment; Modular Optical Protection: Each LED light source module is equipped with a PC material light-transmitting cover (transmittance > 90%), and a sealing ring is installed between the light-transmitting cover and the mounting base for dust and moisture protection.

[0010] Specifically, this invention provides a modular LED plant supplement light with an integrated water-cooling system, comprising:

[0011] A tubular aluminum casing;

[0012] Two parallel copper water-cooling pipes are pressed and embedded into the two side walls of the housing;

[0013] At least two LED light source modules are disposed below the housing, each module including an LED light board, a driver power supply and a mounting base;

[0014] A first end cap and a second end cap are encapsulated at both ends of the housing;

[0015] Multiple hooks are provided on the upper part of the housing;

[0016] And control chips that control the independent operation of each LED light source module;

[0017] The water-cooled pipe has two ends that pass through the first end cap and the second end cap respectively to form a cooling medium inlet and outlet, and the inner cavity of the water-cooled pipe is connected to the external cooling circulation system.

[0018] Furthermore, the housing is an extruded aluminum profile component with a square tubular cross-section. The two side walls are provided with fitting grooves that are interference fit with the outer diameter of the water-cooling pipe, and the bottom is provided with a lamp source mounting groove for installing the LED light source module.

[0019] Furthermore, a thermally conductive silicone grease layer is filled between the bottom of the fitting groove and the outer wall of the copper water-cooling pipe, and a thermally conductive adhesive layer is provided in the lamp source mounting groove.

[0020] Furthermore, the mounting bases for each LED light source module are fixed to the bottom of the housing using a thermally conductive adhesive layer and bolt assemblies.

[0021] Furthermore, the control chip is connected to a temperature sensor, which is attached to the back of the LED light board, forming a cooling medium flow regulation system based on LED junction temperature feedback.

[0022] Furthermore, the first end cover is provided with a first communication interface and a USB data interface, and the second end cover is provided with a second communication interface and a power interface. Each interface is connected to the end cover by a waterproof sealing ring.

[0023] Furthermore, a hook mounting portion is provided on the top of the housing, the hook mounting portion extends along the axial direction of the housing, the hook mounting portion is provided with a plurality of hook mounting holes, and the hook is detachably mounted in the hook mounting holes.

[0024] Furthermore, the LED light source module also includes a PC material light-transmitting cover with a light transmittance of >90%, and a sealing ring is provided between the light-transmitting cover and the mounting base.

[0025] Furthermore, the cooling medium inlet and outlet are connected to quick-plug pipe fittings, which are equipped with anti-backflow valves.

[0026] This invention achieves three breakthroughs through the above-mentioned structural innovations:

[0027] 1. Significantly improved heat dissipation performance: The copper tube-aluminum shell pressing structure reduces thermal resistance by more than 40%, and combined with the closed-loop temperature control system, it keeps the LED junction temperature stable at ≤65°C, extending the lifespan by more than 2 times;

[0028] 2. Space efficiency optimization: Built-in water cooling pipes save 30% of installation space compared to external solutions, and quick-connect fittings improve maintenance convenience;

[0029] 3. Enhanced agricultural adaptability: The modular light source supports independent spectrum / brightness adjustment, and the modular sealed design of the light-transmitting cover avoids local failures that could lead to overall lamp failure. Attached Figure Description

[0030] Figure 1 This illustration shows a structural schematic diagram of a modular LED plant supplement light with an integrated water-cooling heat dissipation system according to an embodiment of the present invention.

[0031] Figure 2 It shows Figure 1 A view from another direction;

[0032] Figure 3 A schematic diagram of the shell structure is shown.

[0033] Figure 4 The left view of the plant grow light is shown.

[0034] Figure 5 : This shows a right view of the plant grow light;

[0035] Figure 6 This diagram shows the structure of the LED light source module.

[0036] Figure 7 This shows an internal structural view of the LED light source module. Detailed Implementation

[0037] The technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the scope of protection of the present invention.

[0038] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0039] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the importance of the technical features shown.

[0040] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Figures 1 to 7 As shown, the water-cooled modular LED plant supplement light mainly consists of an aluminum housing 1, a water-cooling system, a light source module, an end cap assembly, and a control system.

[0042] The aluminum housing 1 is extruded from 6063-T5 aluminum alloy, with a square tubular cross-section, a groove depth of 40mm, a wall thickness of 3mm, and a length set to 600-1200mm according to power requirements. Two parallel semi-circular fitting grooves 11 are machined on both side walls of the housing 1, with a groove diameter of Φ4.2±0.1mm and a depth of 2.5mm. Two TP2 copper water-cooling tubes 2 (outer diameter Φ4mm, wall thickness 0.8mm) are pressed into the fitting grooves with an H7 / p6 interference tolerance. The bottom of the grooves is filled with Shin-Etsu X-23-7783D thermally conductive silicone grease (thermal conductivity 6.0W / m·K, thickness 0.05-0.1mm) to effectively eliminate interfacial thermal resistance. The water-cooling pipe 2 passes through the first end cap 4 and the second end cap 5 at both ends, forming the cooling medium inlet and outlet 21. The mating surfaces of the end caps and the housing 1 are coated with Henkel LOCTITE 5699 epoxy sealant and secured with 5 sets of M4 stainless steel bolts at a torque of 2.5 N·m. To enhance shear resistance, the fitting groove 11 can also be replaced with a dovetail groove structure; the copper water-cooling pipe 2 can be a copper-aluminum composite pipe (outer aluminum / inner copper), reducing material costs by 10-15%. To further enhance thermal management, a paraffin-based phase change material layer (melting point 65℃) can be added to the top of the housing 1, providing ≥30 minutes of emergency heat dissipation buffer in case of water pump failure. The bottom of the housing 1 is provided with a lamp source mounting slot 13 for mounting multiple LED light source modules 3 in parallel.

[0043] The LED light source modules 3 are arranged side-by-side along the bottom of the housing 1. Each module contains three core components: a die-cast aluminum mounting base 33 with a 2mm high thermally conductive protrusion at the bottom, which is bonded to the housing 1 by Bergers SIL-PAD 2000 thermally conductive adhesive (thermal conductivity 1.5W / m·K) and mechanically reinforced by M3 hexagonal screws 35 spaced 50mm apart; a 2835 LED light board 31 supported by a ceramic substrate (96% alumina) is mounted on the mounting base 33, with a chip wavelength configuration of 450nm blue light and 660nm red light, and a power density controlled within 15W / dm²; a driver power supply 32 connected to the chip 7 to achieve individual light emission control, and the driver power supply 32 can be selected as a constant current / constant voltage dual-mode power supply with a TILM3409 solution to adapt to the voltage requirements of different crops; and a PC material light-transmitting cover 36 (Covestro Makrolon). The LED2045, 1.5mm thick, with 92% light transmittance and <3% haze, is sealed to the mounting base 33 with a silicone sealing ring 34 (compression ratio 25%) for dustproof protection. In other embodiments, the light-transmitting cover 36 can also be made of PMMA material (93% light transmittance), but the impact resistance will decrease by about 30%. The inner surface of the light-transmitting cover 36 can be molded with a 60° refractive angle prism microstructure to improve the light uniformity to over 85%.

[0044] The control system is based on the STM32G473RET6 chip 7, which is connected to a PT1000 platinum resistance temperature sensor (accuracy ±0.5℃) mounted on the back of the LED light board. The chip 7 uses a PID algorithm to convert real-time junction temperature data into a PWM signal, dynamically adjusting the flow rate of the external circulating water pump (response time ≤1 second) to keep the LED junction temperature stably maintained within the safe range of 60-65℃.

[0045] The end caps integrate multi-functional interfaces: the first end cap 4 is equipped with a first communication interface 41 and a Type-C USB interface 42. The first communication interface 41 is an RS485 data interface, supporting 10Gbps data transmission and firmware upgrades. It can also import crop growth models through the USB interface 42 to achieve automatic matching of spectral parameters with the growth cycle. The second end cap 5 is equipped with a second communication interface 51 (baud rate 115200bps) and an IP67 waterproof DC power interface 52 (input 24V / 10A). All interfaces are fitted with nitrile rubber waterproof sealing rings (compression set ≤15%). The top of the housing 1 is designed with an axially extending hook mounting part 12, which has a row of Φ5mm hook mounting holes 121 with a hole spacing of 50mm. Detachable 304 stainless steel hooks 6 are installed in the hook mounting holes 121. The load-bearing capacity of a single hook is ≥15kg. By installing the hooks 6 in different mounting holes 121, the installation position of the hooks 6 can be adjusted. In some implementations, the hook system can also be replaced with a neodymium iron boron magnetic base (with a magnetic force ≥20kg) to suit iron shelving scenarios.

[0046] The cooling circulation system is connected via quick-connect pipe fitting 211, which uses SMC KM series standard parts and has a built-in TPE anti-backflow valve (opening pressure 0.05MPa). It is recommended to match it with an external water chiller with a cooling capacity of ≥500W, using a 30% concentration ethylene glycol aqueous solution (freezing point -15℃) as the circulating medium, and controlling the working flow rate at 2-3L / min.

[0047] The working principle of this embodiment is as follows: During operation, the heat generated by the LED light board 31 is transferred to the aluminum housing 1 through the thermally conductive boss, and then introduced into the copper water-cooling pipe 2 through the thermally conductive silicone grease layer 12. The cooling medium flows in the pipe to carry away the heat, and the temperature sensor monitors the junction temperature in real time and feeds the data back to the control chip 7. The chip 7 achieves dynamic temperature control by adjusting the water pump flow rate.

[0048] The equipment installation requires four steps:

[0049] 1. Insert hook 6 into the hook mounting hole 121 of the selected position and hang it on the standard greenhouse truss (50cm spacing).

[0050] 2. Quick-connect pipe connector 211 connects to the external water-cooled unit piping, and power interface 41 connects to a 24V DC power supply.

[0051] 3. Send commands via RS485 bus (e.g., "Module 1 turns on 100% red light, Module 2 turns on 50% blue light").

[0052] 4. Disassemble the end cap bolts and flush the scale on the inner wall of the water cooling pipe 2 every quarter. It is recommended to use a 5% citric acid solution for circulating cleaning.

[0053] The embodiments of the present invention are particularly applicable to three types of scenarios:

[0054] 1. Greenhouse fruit and vegetable cultivation: The modular light-adjusting function can be configured with 660nm red light as the main spectrum for tomatoes during the flowering and fruiting period, resulting in a 23% increase in yield and a 17% reduction in electricity costs in actual measurements;

[0055] 2. Multi-layer vertical farm: The thin design of the light fixtures (≤45mm thickness) reduces the spacing between cultivation layers to 30cm, increasing space utilization by 40%.

[0056] 3. High humidity / high temperature environment: IP65 protection rating and anti-backflow connector design reduce the failure rate from 12% to 1.5% in edible mushroom factories, and can still maintain LED lifespan ≥50,000 hours in desert environments at 50℃.

[0057] In the description of this specification, references to terms such as "some embodiments," "some examples," "exemplarily," "example," "preferred," or "further" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A modular LED plant supplement light with an integrated water-cooling heat dissipation system, characterized in that, include: Tubular aluminum casing (1); Two parallel copper water-cooling pipes (2) are pressed and embedded into the two side walls of the housing (1). At least two LED light source modules (3) are disposed below the housing (1), each module including an LED light board (31), a driving power supply (32) and a mounting base (33). The first end cap (4) and the second end cap (5) are encapsulated at both ends of the housing (1); Multiple hooks (6) are provided on the upper part of the housing (1); And the control chip (7) that controls the independent operation of each LED light source module (3); The water-cooled pipe (2) has two ends that pass through the first end cap (4) and the second end cap (5) respectively to form a cooling medium inlet and outlet (21), and the inner cavity of the water-cooled pipe (2) is connected to the external cooling circulation system.

2. The LED plant grow light according to claim 1, characterized in that: The housing (1) is an extruded aluminum profile component with a square tubular cross-section. The two side walls are provided with fitting grooves (11) that are interference fit with the outer diameter of the water cooling pipe (2), and the bottom is provided with a lamp source mounting groove (13) for installing the LED light source module (3).

3. The LED plant grow light according to claim 2, characterized in that: The bottom of the fitting groove (11) and the outer wall of the copper water-cooled pipe (2) are filled with a thermally conductive silicone grease layer, and the lamp source mounting groove (13) is provided with a thermally conductive adhesive layer.

4. The LED plant grow light according to claim 1, characterized in that: The mounting base (33) of each LED light source module (3) is fixed to the bottom of the housing (1) by a thermally conductive adhesive layer and a bolt assembly (35).

5. The LED plant grow light according to claim 1, characterized in that: The control chip (7) is connected to a temperature sensor, which is attached to the back of the LED light board (31) to form a cooling medium flow regulation system based on LED junction temperature feedback.

6. The LED plant grow light according to claim 1, characterized in that: The first end cap (4) is provided with a first communication interface (41) and a USB data interface (42), and the second end cap (5) is provided with a second communication interface (51) and a power interface (52). Each interface is connected to the end cap by a waterproof sealing ring.

7. The LED plant grow light according to claim 1, characterized in that: The top of the housing (1) is provided with a hook mounting part (12), which extends along the axial direction of the housing (1). The hook mounting part (12) is provided with a plurality of hook mounting holes (121), and the hook (6) is detachably mounted in the hook mounting holes (121).

8. The LED plant grow light according to claim 1, characterized in that: The LED light source module (3) also includes a PC material light-transmitting cover (36) with a light transmittance of >90%, and a sealing ring (34) is provided between the light-transmitting cover (36) and the mounting base (33).

9. The LED plant grow light according to claim 1, characterized in that: The cooling medium inlet and outlet (21) are connected to a quick-plug pipe joint (211), which is equipped with an anti-backflow valve.

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