Laser heating module and heating device

Abstract

The utility model relates to a laser heating module and a heating device. The laser heating module comprises a substrate, a laser chip and a dodging assembly. The plurality of laser chips are arranged on the substrate at intervals; the light uniformizing assembly comprises a plurality of reflecting elements, the reflecting elements are sequentially connected on the side, provided with the laser chip, of the substrate and jointly surround the laser chip, the surfaces, facing the laser chip, of the reflecting elements are arranged to be reflecting surfaces, at least two reflecting elements are oppositely arranged, and the reflecting surfaces are arranged on the side, facing the laser chip, of the substrate. And the distance between at least two opposite reflecting elements is adjustable. According to the laser heating module, the illuminance of the light emitted by the laser heating module and the spot size of the light in the connecting line direction of the two reflecting elements can be adjusted, and the laser heating module can adapt to the requirements of different heating areas and different heating illuminance and adapt to different heating and curing scenes.

Description

Technical Field

[0001] The present application relates to the field of laser heating technology, and in particular to a laser heating module and a heating device. Background Art

[0002] Perovskite cells are sensitive to factors such as moisture and oxygen in the environment, and they usually need to be encapsulated during the production process. The industry usually uses waterproof glue to double-glass encapsulate perovskite cells. After the waterproof glue is encapsulated, infrared light or blue laser light source is needed to heat and cure the waterproof glue. However, the traditional heating device used to heat the waterproof glue is difficult to adapt to waterproof glue with different heating requirements, resulting in low efficiency of the heating and curing process. Summary of the invention

[0003] Based on this, it is necessary to provide a laser heating module and a heating device to address the problem that traditional heating devices are difficult to adapt to waterproof glues with different heating requirements, resulting in low efficiency of the heating and curing process.

[0004] A laser heating module, comprising:

[0005] substrate;

[0006] A plurality of laser chips are arranged on the substrate at intervals; and

[0007] The light homogenizing component includes a plurality of reflective elements, which are connected in sequence on a side of the substrate where the laser chip is provided, and are arranged together around the laser chip. The surfaces of the reflective elements facing the laser chip are arranged as reflective surfaces, wherein at least two reflective elements are arranged opposite to each other, and the distance between at least two opposite reflective elements is adjustable.

[0008] The above-mentioned laser heating module integrates multiple laser chips. The lasers emitted by the multiple laser chips can achieve large-area, high-illuminance and well-uniform heating light after being homogenized by the light homogenization component, which can meet the needs of large-area, high-efficiency heating and curing of waterproof glue. At the same time, the distance between at least two relative reflective elements is adjustable. By adjusting the distance between the two relative reflective elements, the illumination of the light emitted by the laser heating module and the spot size of the light in the direction of the connection between the two reflective elements can be adjusted, which can adapt to the needs of different heating areas and different heating illuminations, and adapt to different heating and curing scenarios. In addition, while achieving the adjustable effects of heating area and heating illumination, the above-mentioned laser heating module has a simple structure, low installation cost, and small footprint.

[0009] In one embodiment, the light homogenizing component includes a first reflecting element, a second reflecting element, a third reflecting element and a fourth reflecting element connected in sequence, the first reflecting element and the third reflecting element are opposite to each other, and the second reflecting element and the fourth reflecting element are opposite to each other, wherein:

[0010] The first reflecting element and the third reflecting element are relatively fixed to the substrate, and the second reflecting element and the fourth reflecting element can be relatively close to or far away from each other; or,

[0011] The first reflecting element is connected to the second reflecting element, the third reflecting element is connected to the fourth reflecting element, the second reflecting element and the third reflecting element are slidably matched toward the surface of the first reflecting element, the fourth reflecting element and the first reflecting element are slidably matched toward the surface of the third reflecting element, and the second reflecting element and the fourth reflecting element can be relatively close to or far away. With such a configuration, the illumination of the light emitted by the laser heating module and the size of the light spot in the direction of the connection between the second reflecting element and the fourth reflecting element can be adjusted to meet the needs of different heating areas, and the adjustment is simple. In addition, when the first reflecting element is connected to the second reflecting element and the third reflecting element is connected to the fourth reflecting element, the first reflecting element and the third reflecting element can provide a limit for the relative movement of the second reflecting element and the fourth reflecting element, thereby improving the reliability of distance adjustment.

[0012] In one embodiment, the lengths of the second reflective element and the fourth reflective element are greater than the lengths of the first reflective element and the third reflective element, and the plurality of laser chips are sequentially arranged at intervals in the direction from the first reflective element to the third reflective element. In this way, the laser chips and the light homogenizing components can be adapted to each other, thereby improving the light homogenizing effect and making full use of the lasers emitted by the plurality of laser chips for heating.

[0013] In one embodiment, the light homogenizing component includes a second reflecting element and a fourth reflecting element that are arranged opposite to each other, and the laser heating module also includes an adjusting element, and the adjusting element includes an adjusting portion and a rod portion, and the rod portion is penetrated by the second reflecting element, and the adjusting portion is connected to the rod portion on the side of the second reflecting element that is opposite to the fourth reflecting element, and the adjusting portion can drive the rod portion to rotate around the axis to drive the second reflecting element and the fourth reflecting element to be relatively close to or away from each other. The adjusting element is arranged to adjust the distance between the second reflecting element and the fourth reflecting element, thereby adjusting the illumination and spot area of ​​the emitted light, and the structure is simple, the setting cost is low, and the adjustment is more convenient.

[0014] In one embodiment, the laser heating module further includes a first screw seat and a second screw seat, the first screw seat is arranged on the side of the second reflective element facing away from the adjustment portion and abuts against the second reflective element, the second screw seat is fixed on the fourth reflective element, the rod portion is threadedly engaged with the first screw seat, and is rotationally engaged with the second screw seat. With such an arrangement, a stable and reliable illumination and heating area adjustment mechanism can be provided through the cooperation of the two screw seats and the adjustment element, with a simple structure, low setting cost, and easy adjustment.

[0015] In one embodiment, the laser heating module further comprises an elastic element, the elastic element is arranged between the first screw seat and the second screw seat, and the two ends of the elastic element are respectively pressed against the first screw seat and the second screw seat. The elastic element is arranged to press against the first screw seat and the second screw seat, so as to increase the torque of the rotating adjustment element, make the adjustment of the distance between the second reflecting element and the fourth reflecting element more controllable, improve the adjustment accuracy of the illumination and the spot area, and at the same time avoid the first screw seat from loosening, thereby improving the reliability of the adjustment mechanism.

[0016] In one embodiment, the elastic element comprises a spring, and the elastic element is sleeved on a portion of the rod portion located between the first screw seat and the second screw seat; and / or,

[0017] The material of the first screw seat and the second screw seat includes plastic; and / or,

[0018] The dimensions of the first screw seat and the second screw seat in the axial direction of the rod portion are less than or equal to 2.5 mm.

[0019] A heating device comprises a housing and a laser heating module as described in any of the above embodiments, wherein the laser heating module is arranged in the housing. With the above laser heating module, the heating device can meet the requirements of large-area, high-intensity heating and curing, and the light illumination and spot area can be adjusted to meet different heating requirements, and the structure is simple and the installation cost is low.

[0020] In one embodiment, the housing includes a heat dissipation part and a mounting part connected to each other, the heat dissipation part is provided with a water inlet and a water outlet, the heat dissipation part is also provided with a water channel connecting the water inlet and the water outlet, the mounting part is provided with a receiving cavity, the mounting part is also provided with a light outlet connecting the receiving cavity, the laser heating module is arranged in the receiving cavity, the side of the substrate facing away from the laser chip is in thermal contact with the heat dissipation part, and the side of the laser chip facing away from the substrate faces the light outlet. The heat dissipation part can cool the laser heating module by externally connecting the circulating coolant through the water inlet and the water outlet, so that the laser chip can work stably and improve the performance stability of the heating device, and the mounting part can also provide protection for the laser heating module and improve the structural reliability.

[0021] In one embodiment, the light homogenizing component includes a second reflective element and a fourth reflective element arranged opposite to each other, the second reflective element is fixed to the mounting portion, the laser heating module also includes an adjusting element and a first screw seat and a second screw seat arranged between the second reflective element and the fourth reflective element, the first screw seat abuts against the second reflective element, the second screw seat is fixed to the fourth reflective element, the adjusting element includes a rod and an adjusting portion, the rod passes through the mounting portion, the second reflective element and the first screw seat in sequence, and is inserted into the second screw seat, the rod is threadedly matched with the first screw seat, and is rotatably connected with the second screw seat, the adjusting portion is connected to the rod on the side of the mounting portion facing away from the second reflective element, and the adjusting portion can drive the rod to rotate around the axis to drive the fourth reflective element to move along the axial direction of the rod. In this way, the light illumination and the spot area can be adjusted by rotating the adjusting portion located outside the mounting portion, the structure is simple, the setting cost is low, and the adjustment is easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a schematic diagram of the structure of a laser heating module in some embodiments.

[0023] FIG. 2 is a schematic structural diagram of the laser heating module shown in FIG. 1 from another angle.

[0024] FIG. 3 is an exploded schematic diagram of the laser heating module shown in FIG. 1 .

[0025] FIG. 4 is a cross-sectional schematic diagram of the laser heating module shown in FIG. 1 .

[0026] FIG. 5 is a schematic diagram of the structure of a heating device in some embodiments.

[0027] FIG. 6 is a schematic diagram of the structure of the heating device shown in FIG. 5 omitting the protective lens and the laser heating module.

[0028] FIG. 7 is a schematic diagram of the optical path of the laser heating module when the interval between the second reflecting element and the fourth reflecting element is 4 mm.

[0029] FIG8 is a schematic diagram of the optical path of the laser heating module when the interval between the second reflecting element and the fourth reflecting element is 12 mm.

[0030] FIG9 is a schematic diagram of the optical path of the laser heating module when the interval between the second reflecting element and the fourth reflecting element is 17 mm.

[0031] Reference numerals:

[0032] 10. Laser heating module; 11. Laser chip; 12. Substrate; 13. Light homogenization component; 131. First reflecting element; 132. Second reflecting element; 133. Third reflecting element; 134. Fourth reflecting element; 135. Reflecting surface; 136. Light through hole; 14. Adjusting element; 141. Adjusting part; 142. Rod; 15. First screw seat; 16. Second screw seat; 17. Elastic element; 20. Heating device; 21. Shell; 211. Heat dissipation part; 2111. Water inlet; 2112. Water outlet; 2113. Signal interface; 2114. Electrode seat; 212. Mounting part; 2121. Accommodating cavity; 2122. Light outlet; 2123. Groove; 22. Protective lens. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] Please refer to Figures 1 and 2, which are schematic diagrams of the structures of the laser heating module 10 at different angles in some embodiments. The laser heating module 10 provided in the present application integrates multiple laser chips 11. When the multiple laser chips 11 emit lasers, the laser heating module 10 can project lasers to heat the object to be heated. The laser heating module 10 can be used to heat and cure the waterproof glue encapsulated in the perovskite battery. Of course, it can also be used for any other applicable scenarios that can be heated by laser irradiation, such as metal surface heat treatment. The type of laser chip 11 and the emitted laser band can be set according to the heating requirements of the object to be heated. For example, it can be an infrared light chip, a blue light chip, etc., which is not limited in the present application.

[0040] In some embodiments, the laser heating module 10 further includes a substrate 12 and a light homogenizing component 13, and a plurality of laser chips 11 are arranged at intervals on the substrate 12. The plurality of laser chips 11 can be arranged in an array, for example, in a single row array, or in a multi-row array, to improve the irradiation area and uniformity of the emitted light. The number of laser chips 11 is also not limited, for example, it can be 50 or any other applicable number, which can be specifically set according to the heating area and power requirements. The light homogenizing component 13 includes a plurality of reflective elements, and the plurality of reflective elements are connected in sequence on one side of the substrate 12 where the laser chip 11 is provided, and are arranged together around the laser chip 11, and the surface of the reflective element facing the laser chip 11 is set as a reflective surface 135. The specific setting of the reflective element is not limited, as long as the reflective surface 135 set around the laser chip 11 can be formed. For example, the reflective element can be obtained by any applicable reflective film layer such as a silver film on any applicable substrate such as metal, plastic, glass, etc. The ends of the multiple reflective elements away from the substrate 12 are jointly arranged to form a light hole 136. It can be understood that when the multiple laser chips 11 on the substrate 12 emit lasers, at least part of the light emitted by the laser chip 11 can be emitted from the light hole 136 after multiple emitting on the reflective surface 135 of the multiple reflective elements and projected onto the object to be heated, so as to heat the object to be heated. Due to the multiple reflections of the light by the multiple reflective elements, the light can be homogenized, and the uniformity of the light projected from the light hole 136 can be improved, thereby achieving a uniform heating effect. At the same time, by homogenizing the light through the multiple reflective elements connected in sequence, the structure of the laser heating module 10 can be simple and the installation cost can be low.

[0041] In the embodiment shown in the drawings of the present application, four light homogenizing components 13 may be provided, for example, the light homogenizing component 13 includes a first reflective element 131, a second reflective element 132, a third reflective element 133 and a fourth reflective element 134 connected in sequence, the first reflective element 131 is opposite to the third reflective element 133, and the second reflective element 132 is opposite to the fourth reflective element 134. The four reflective elements are arranged to form an uninterrupted reflective surface 135 facing the laser chip 11, which can enhance the homogenization effect of the light, while preventing the light from leaking from the light homogenizing component 13, thereby enhancing the light utilization efficiency. Of course, according to the different shapes and areas of the objects to be heated, the number and arrangement of the reflective elements may also have other arbitrary settings, for example, five, six, eight or more reflective elements may also be provided.

[0042] Further, in some embodiments, the distance between at least two relative reflective elements is adjustable. It is understood that when the distance between the two relative reflective elements is adjustable, the size of the light hole 136 in the direction of the line connecting the two reflective elements is also adjustable, which can change the spot size of the light projected from the light hole 136 in the direction of the line connecting the two reflective elements, and can also adjust the light uniformity and convergence effect of the light uniformity component 13 on the light, thereby changing the illumination of the projected light. Thus, by adjusting the distance between at least two relative reflective elements, the size of the projected light spot and the illumination of the projected light can be changed to meet different heating power or heating area requirements of the object to be heated, and improve the scope of application of the laser heating module 10. In the embodiment shown in the drawings of the present application, the distance between the first reflective element 131 and the third reflective element 133 in the direction of the line is relatively fixed, and the second reflective element 132 and the fourth reflective element 134 can be relatively close or relatively far away, so that the illumination of the light projected by the laser heating module 10 and the size of the light spot in the direction of the line connecting the second reflective element 132 and the fourth reflective element 134 can be adjusted. Of course, according to different heating shapes, areas and illumination requirements, in other embodiments, the distance between the first reflecting element 131 and the third reflecting element 133 can also be set to be adjustable to simultaneously adjust the size of the projection spot in two directions perpendicular to each other. When the number of reflecting elements is other, the number of reflecting elements with adjustable distances can also be set according to needs, which is not limited in this application.

[0043] The above-mentioned laser heating module 10 integrates multiple laser chips 11. The lasers emitted by the multiple laser chips 11 can achieve large-area, high-illuminance and well-uniform heating light after being homogenized by the light homogenization component 13, which can meet the needs of large-area, high-efficiency heating and curing of the waterproof glue of the perovskite battery. At the same time, the distance between at least two relative reflective elements is adjustable. By adjusting the distance between the two relative reflective elements, the illumination of the light emitted by the laser heating module 10 and the spot size of the light in the direction of the connection between the two reflective elements can be adjusted, which can adapt to the needs of different heating areas and different heating illuminations, and adapt to different heating and curing scenarios. In addition, while achieving the adjustable effects of heating area and heating illumination, the above-mentioned laser heating module 10 has a simple structure, low installation cost, and small footprint.

[0044] In some embodiments, the first reflective element 131 and the third reflective element 133 are relatively fixed to the substrate 12, and at least one of the second reflective element 132 and the fourth reflective element 134 can move along the connecting line direction of the second reflective element 132 and the fourth reflective element 134, so that the second reflective element 132 and the fourth reflective element 134 are relatively close to or relatively far away from each other. When the fourth reflective element 134 can move relative to the second reflective element 132, the two ends of the fourth reflective element 134 can be slidably matched with the first reflective element 131 and the third reflective element 133, respectively, to provide sliding limit for the movement of the fourth reflective element 134, thereby improving the reliability of distance adjustment.

[0045] As shown in combination with FIG3 , in some embodiments, the first reflective element 131 is connected to the second reflective element 132, the third reflective element 133 is connected to the fourth reflective element 134, the second reflective element 132 and the third reflective element 133 are slidably matched toward the surface of the first reflective element 131, and the fourth reflective element 134 and the first reflective element 131 are slidably matched toward the surface of the third reflective element 133. In this way, while the second reflective element 132 and / or the fourth reflective element 134 are moved to adjust the illumination and spot size of the projected light to meet different heating requirements, the first reflective element 131 and the third reflective element 133 can also provide sliding limit for the relative movement of the second reflective element 132 and the fourth reflective element 134, thereby improving the reliability of distance adjustment.

[0046] Of course, the relative movement and relative fixing methods among the four reflective elements are not limited to the above description, as long as the distance between at least two reflective elements is adjustable. The movement of the reflective elements is also not limited. For example, when the fourth reflective element 134 can move relative to the second reflective element 132, the movement of the fourth reflective element 134 can be achieved by providing a sliding matching structure such as a guide rail on the substrate 12, the first reflective element 131, the third reflective element 133 or other carriers (such as the mounting portion 212 of the heating device 20 described below).

[0047] In some embodiments, the lengths of the second reflective element 132 and the fourth reflective element 134 are greater than the lengths of the first reflective element 131 and the third reflective element 133, and the plurality of laser chips 11 are sequentially arranged at intervals in the direction from the first reflective element 131 to the third reflective element 133. In other words, the light homogenizing component 13 is roughly in the shape of a rectangular parallelepiped, and the plurality of laser chips 11 are arranged in a row array, and the arrangement direction is parallel to the length direction of the light homogenizing component 13. Thus, the arrangement of the laser chip 11 and the light homogenizing component 13 can adapt to each other, achieve a larger irradiation area, improve the light homogenizing effect, and make full use of the lasers emitted by the plurality of laser chips 11 for heating.

[0048] As shown in combination with FIG. 3 and FIG. 4 , in some embodiments, the laser heating module 10 further includes an adjusting element 14, the adjusting element 14 includes an adjusting portion 141 and a rod portion 142, the rod portion 142 penetrates the second reflective element 132, the adjusting portion 141 is connected to the rod portion 142 on the side of the second reflective element 132 facing away from the fourth reflective element 134, and the adjusting portion 141 can drive the rod portion 142 to rotate around the axis to drive at least one of the second reflective element 132 and the fourth reflective element 134 to move. The adjusting element 14 can be a screw, and the adjusting portion 141 can be a nut of the screw, thereby, the illumination and irradiation area of ​​the projected light can be adjusted by rotating the adjusting portion 141 outside the light homogenizing component 13, the structure is simple, the setting cost is low, and the adjustment is more convenient.

[0049] In some embodiments, the laser heating module 10 further includes a first screw seat 15 and a second screw seat 16 disposed between the second reflective element 132 and the fourth reflective element 134, the first screw seat 15 abuts against the side of the second reflective element 132 facing away from the adjustment portion 141, and the second screw seat 16 is fixed to the side of the fourth reflective element 134 facing the second reflective element 132. The rod 142 is threadedly connected to the first screw seat 15 and is rotationally matched with the second screw seat 16. In this arrangement, when the rod 142 rotates, the first screw seat 15 can be driven to move relative to the rod 142 in the axial direction of the rod 142, and the second screw seat 16 is inconveniently positioned relative to the rod 142 in the axial direction of the rod 142, thereby driving the fourth reflective element 134 to move relative to the second reflective element 132 to adjust the distance between the fourth reflective element 134 and the second reflective element 132.

[0050] In some embodiments, the laser heating module 10 further includes an elastic element 17, which is disposed between the first screw seat 15 and the second screw seat 16, and the two ends of the elastic element 17 are respectively pressed against the first screw seat 15 and the second screw seat 16, for example, the two ends of the elastic element 17 can be respectively embedded in the first screw seat 15 and the second screw seat 16. The elastic element 17 is arranged to press against the first screw seat 15 and the second screw seat 16, which can increase the torque of the rotating adjustment element 14 to drive the first screw seat 15 and the second screw seat 16 to move relative to each other, so that the precision control of the distance adjustment between the second reflective element 132 and the fourth reflective element 134 is more convenient, thereby improving the adjustment precision of the illumination and the spot area. At the same time, the elastic element 17 presses the first screw seat 15 against the second reflective element 132, and can also prevent the first screw seat 15 from loosening and affecting the reliability of the overall structure. In some embodiments, the elastic element 17 can be a spring. The elastic element 17 is sleeved on the rod 142 and both ends are embedded in the first screw seat 15 and the second screw seat 16. The elements fit tightly and limit each other, which can improve the reliability of the overall structure.

[0051] The above-mentioned laser heating module 10 can provide a stable and reliable illumination and heating area adjustment mechanism through the cooperation of two screw seats, the adjustment element 14 and two plate-shaped reflective elements. It has a simple structure, low setting cost and easy adjustment. At the same time, the rod 142 does not need to be penetrated by the fourth reflective element 134. The adjustment element 14 only needs to be exposed on the side of the second reflective element 132 facing away from the fourth reflective element 134 for adjustment, which can improve the reliability of the overall structure and the appearance integrity. Of course, the setting of the adjustment mechanism is not limited to the above records. The laser heating module 10 can also realize the relative movement of the fourth reflective element 134 relative to the second reflective element 132 by setting any applicable elements such as a screw mechanism, which will not be repeated in this application.

[0052] In some embodiments, the material of the first screw seat 15 and the second screw seat 16 can be a material with low hardness such as plastic to avoid scratching the second reflective element 132 and the fourth reflective element 134. In some embodiments, the axial dimension of the first screw seat 15 and the second screw seat 16 in the rod portion 142 is less than or equal to 2.5 mm, which can reduce the space occupied by the first screw seat 15 and the second screw seat 16 between the second reflective element 132 and the second fourth reflective element while achieving reliable distance adjustment, so as to avoid affecting the emission of light.

[0053] In combination with FIG. 1 , FIG. 5 and FIG. 6 , the present application further provides a heating device 20, which may include a housing 21 and a laser heating module 10 as described in any of the above embodiments. By using the above laser heating module 10, the heating device 20 can meet the requirements of large-area, high-intensity heating and curing, and the light illumination and spot area can be adjusted to meet different heating requirements, and the structure is simple and the setting cost is low.

[0054] In some embodiments, the housing 21 may include a heat dissipation portion 211 and a mounting portion 212 that are interconnected. The heat dissipation portion 211 is provided with a water inlet 2111 and a water outlet 2112. The heat dissipation portion 211 is also provided with a water passage (not shown) connecting the water inlet 2111 and the water outlet 2112. The mounting portion 212 is provided with a receiving cavity 2121, and the mounting portion 212 is also provided with a light outlet 2122 connecting the receiving cavity 2121. The laser heating module 10 is disposed in the receiving cavity 2121, and the side of the substrate 12 facing away from the laser chip 11 is in thermal contact with the heat dissipation portion 211, and the side of the laser chip 11 facing away from the substrate 12 is arranged toward the light outlet 2122. For example, the mounting portion 212 may be in the shape of a hollow rectangular parallelepiped with openings on both sides. The shape of the mounting portion 212 is adapted to the shape of the light homogenizing component 13. The mounting portion 212 may be integrally formed with the heat dissipation portion 211. One end of the mounting portion 212 is connected to the heat dissipation portion 211 and blocked by the heat dissipation portion 211, and the opening at the other end forms a light outlet 2122. The substrate 12 is disposed at one end of the mounting portion 212 close to the heat dissipation portion 211 and is in thermal contact with the heat dissipation portion 211, for example, through any suitable thermal conductive material such as high temperature resistant silicone grease to contact the heat dissipation portion 211. The extension direction of the first reflective element 131, the second reflective element 132, the third reflective element 133 and the fourth reflective element 134 may be substantially parallel to the direction of the line connecting the openings at both ends of the mounting portion 212. The light hole 136 is disposed corresponding to the light outlet 2122, and the light emitted by the laser heating module 10 is projected from the light outlet 2122 onto the object to be heated.

[0055] In some embodiments, the heat dissipation part 211 can cool the laser heating module 10 through the water inlet 2111 and the water outlet 2112, suppress the temperature rise of the laser chip 11, and improve the performance stability of the laser chip 11. The external circulating coolant can flow into the water channel from the water inlet 2111, absorb the heat conducted from the laser chip 11 to the mounting part 212 in the water channel, and then flow out from the water outlet 2112 to achieve cooling of the laser chip 11. The specific setting of the mounting part 212 is not limited, as long as it can achieve cooling of the laser heating module 10. For example, a plurality of heat dissipation fins can be provided in the mounting part 212, and the water channel passes through the plurality of heat dissipation fins. A fan or other heat dissipation device can also be provided in the mounting part 212 to take away the heat of the coolant in the water channel through the airflow, thereby improving the cooling efficiency. The mounting part 212 can provide fixed limit and protection for the laser heating module 10, improve the tightness of the cooperation between the substrate 12 and the heat dissipation part 211, and improve the structural reliability of the heating device 20.

[0056] In some embodiments, the heating device 20 may also be provided with a plastic or glass protective lens 22 to cover the light outlet 2122, which can not only transmit the laser, but also provide protection for the laser heating module 10 and prevent external moisture or dust from entering the mounting portion 212 and affecting the light output of the laser heating module 10.

[0057] In some embodiments, a groove 2123 may be further provided on the side of the mounting portion 212 facing away from the laser heating module 10, the rod portion 142 of the adjusting element 14 passes through the mounting portion 212, the second reflecting element 132 and the first screw seat 15 in sequence, and is inserted into the second screw seat 16, the adjusting portion 141 is connected to the rod portion 142 on the side of the mounting portion 212 facing away from the second reflecting element 132, and the adjusting portion 141 is located in the groove 2123. In this way, by rotating the adjusting portion 141 with a screwdriver or other device on the outside of the mounting portion 212, the distance between the second reflecting element 132 and the fourth reflecting element 134 can be adjusted, thereby adjusting the illumination and the spot shape and size of the light projected by the heating device 20. The heating device 20 has a simple structure, low setting cost, and simple adjustment operation. The adjusting portion 141 will not protrude from the surface of the mounting portion 212, which can improve the appearance integrity of the heating device 20.

[0058] As shown in Figures 7 to 9, Figure 7 is a schematic diagram of the optical path when the distance between the second reflecting element 132 and the fourth reflecting element 134 is 5 mm, Figure 8 is a schematic diagram of the optical path when the distance between the second reflecting element 132 and the fourth reflecting element 134 is 12 mm, and Figure 9 is a schematic diagram of the optical path when the distance between the second reflecting element 132 and the fourth reflecting element 134 is 17 mm. According to the simulation of the lighting effect of one embodiment, when the distance between the second reflecting element 132 and the fourth reflecting element 134 is 5 mm, the illumination value of the light emitted by the laser heating module 10 is 8.3 W / cm 2 When the distance between the second reflecting element 132 and the fourth reflecting element 134 is 12 mm, the illumination value of the light emitted by the laser heating module 10 is 5.81 W / cm 2 When the distance between the second reflecting element 132 and the fourth reflecting element 134 is 17 mm, the illumination value of the light emitted by the laser heating module 10 is 3.85 W / cm 2 As shown in FIGS. 7 to 9 , combined with the simulation data, by rotating the adjustment element 14 to adjust the distance between the second reflection element 132 and the fourth reflection element 134 , the illumination and the spot size of the light projected by the laser heating module 10 can be changed. The larger the distance between the second reflection element 132 and the fourth reflection element 134 , the lower the light illumination and the larger the spot size. Therefore, the adjustment element 14 can be rotated according to different heating area and power requirements to adapt to different heating requirements, thereby improving the application range of the laser heating module 10 and the heating device 20 .

[0059] In some embodiments, the heat dissipation portion 211 may also be provided with a signal interface 2113 to receive external signal instructions, such as receiving user operation instructions to determine whether the laser chip 11 emits light for heating operations. In some embodiments, the heat dissipation portion 211 may also be provided with an electrode holder 2114 electrically connected to the laser chip 11 of the laser heating module 10, and the electrode holder 2114 may be used to communicate with an external power supply so that the external power supply can power the laser chip 11. The laser heating module 10 and the heating device 20 may also be provided with other components to achieve more functions, and the above-mentioned components may also be replaced by any other applicable components to achieve corresponding functions, which will not be described in detail in this application.

[0060] It can be understood that in each embodiment of the drawings of the present application, the laser heating module 10 is provided with two groups of adjustment elements 14, a first screw seat 15, a second screw seat 16 and an elastic element 17, each adjustment element 14 is arranged corresponding to a first screw seat 15, a second screw seat 16 and an elastic element 17, and the two adjustment elements 14 are arranged at different positions of the second reflective element 132, for example, respectively at the two end positions in the length direction of the second reflective element 132. The two groups of adjustment mechanisms support and adjust the second reflective element 132 and the fourth reflective element 134 at different positions of the second reflective element 132, which can improve the reliability and stability of the overall structure. Of course, according to the size and adjustment requirements of the uniform light component 13, the number and setting position of the adjustment element 14 can also have other applicable settings, which will not be repeated in this application.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A laser heating module, characterized in that: include: substrate; A plurality of laser chips are arranged on the substrate at intervals; as well as, The light homogenizing component includes a plurality of reflective elements, which are connected in sequence on a side of the substrate where the laser chip is provided, and are arranged together around the laser chip. The surfaces of the reflective elements facing the laser chip are arranged as reflective surfaces, wherein at least two reflective elements are arranged opposite to each other, and the distance between at least two opposite reflective elements is adjustable.

2. The laser heating module according to claim 1, characterized in that: The light homogenizing component includes a first reflecting element, a second reflecting element, a third reflecting element and a fourth reflecting element connected in sequence, the first reflecting element is opposite to the third reflecting element, the second reflecting element is opposite to the fourth reflecting element, wherein: The first reflecting element and the third reflecting element are relatively fixed to the substrate, and the second reflecting element and the fourth reflecting element can be relatively close to or far away from each other; or, The first reflecting element is connected to the second reflecting element, the third reflecting element is connected to the fourth reflecting element, the second reflecting element and the third reflecting element are slidably matched with the surface of the first reflecting element, the fourth reflecting element and the first reflecting element are slidably matched with the surface of the third reflecting element, and the second reflecting element and the fourth reflecting element can be relatively close to or far away from each other.

3. The laser heating module according to claim 2, characterized in that: The lengths of the second reflecting element and the fourth reflecting element are greater than those of the first reflecting element and the third reflecting element, and the plurality of laser chips are sequentially spaced apart in a direction from the first reflecting element to the third reflecting element.

4. The laser heating module according to claim 1, characterized in that: The light homogenizing component includes a second reflecting element and a fourth reflecting element that are relatively arranged. The laser heating module also includes an adjusting element. The adjusting element includes an adjusting portion and a rod portion. The second reflecting element is passed through the rod portion. The adjusting portion is connected to the rod portion on a side of the second reflecting element that is away from the fourth reflecting element. The adjusting portion can drive the rod portion to rotate around an axis to drive the second reflecting element and the fourth reflecting element to be relatively close to or away from each other.

5. The laser heating module according to claim 4, characterized in that: The laser heating module also includes a first screw seat and a second screw seat. The first screw seat is arranged on the side of the second reflective element facing away from the adjustment portion and abuts against the second reflective element. The second screw seat is fixed on the fourth reflective element. The rod portion is threadedly engaged with the first screw seat and rotationally engaged with the second screw seat.

6. The laser heating module according to claim 5, characterized in that: The laser heating module further includes an elastic element, which is disposed between the first screw seat and the second screw seat, and two ends of the elastic element are respectively pressed against the first screw seat and the second screw seat.

7. The laser heating module according to claim 6, characterized in that: The elastic element comprises a spring, and the elastic element is sleeved on a portion of the rod portion located between the first screw seat and the second screw seat; and / or, The material of the first screw seat and the second screw seat includes plastic; and / or, The dimensions of the first screw seat and the second screw seat in the axial direction of the rod portion are less than or equal to 2.5 mm.

8. A heating device, characterized in that: It comprises a shell and a laser heating module as described in any one of claims 1 to 7, wherein the laser heating module is arranged in the shell.

9. The heating device according to claim 8, characterized in that: The shell includes a heat dissipation part and a mounting part that are interconnected, the heat dissipation part is provided with a water inlet and a water outlet, the heat dissipation part is also provided with a water channel connecting the water inlet and the water outlet, the mounting part is provided with a receiving cavity, the mounting part is also provided with a light outlet connecting the receiving cavity, the laser heating module is arranged in the receiving cavity, the side of the substrate facing away from the laser chip is in thermal contact with the heat dissipation part, and the side of the laser chip facing away from the substrate faces the light outlet.

10. The heating device according to claim 9, characterized in that The light homogenizing component includes a second reflecting element and a fourth reflecting element which are arranged opposite to each other, the second reflecting element is fixed to the mounting portion, the laser heating module also includes an adjusting element and a first screw seat and a second screw seat which are arranged between the second reflecting element and the fourth reflecting element, the first screw seat abuts against the second reflecting element, the second screw seat is fixed to the fourth reflecting element, the adjusting element includes a rod portion and an adjusting portion, the rod portion passes through the mounting portion, the second reflecting element and the first screw seat in sequence, and is inserted into the second screw seat, the rod portion is threadedly matched with the first screw seat, and is rotatably connected to the second screw seat, the adjusting portion is connected to the rod portion on a side of the mounting portion which is away from the second reflecting element, and the adjusting portion can drive the rod portion to rotate around an axis to drive the fourth reflecting element to move axially along the rod portion.

Images