Light source device and solar cell production equipment with same

Abstract

The utility model provides a light source device and solar cell production equipment with the same, the light source device comprises a heat dissipation plate and a plurality of light sources located on the heat dissipation plate, the heat dissipation plate comprises a substrate, a cover plate connected with the substrate, and a flow channel located between the substrate and the cover plate and used for refrigerant circulation, and a shunting block is arranged in the flow channel; the light source is located on the face, away from the cover plate, of the substrate. The flow channel is formed by the substrate and the cover plate, the heat generated by the light source is absorbed by the refrigerant flowing in the flow channel so as to cool the light source, the flow velocity of the refrigerant and the heat exchange efficiency are accelerated by additionally arranging the flow dividing block in the flow channel, and the cooling effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor production, in particular to a light source device and solar cell production equipment having the same. Background Art

[0002] Crystalline silicon solar cells and photovoltaic modules are still the most mature and widely used photovoltaic products. In the production process of crystalline silicon solar cells, the metallization process has an important impact on the performance and conversion efficiency of the cell. At present, the industry often uses light source devices to illuminate the cells to deal with their light decay. The light source device will generate a lot of heat when working, which will affect the luminous efficiency and service life of the light source device, so the light source system needs to be cooled.

[0003] In view of this, it is necessary to provide a light source device to solve the above technical problems. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the utility model provides a light source device, which includes a heat dissipation plate, including a substrate, a cover plate connected to the substrate, a flow channel for circulating a refrigerant between the substrate and the cover plate, a diverter block being arranged in the flow channel; and a plurality of light sources located on a side of the substrate away from the cover plate.

[0005] As a further improvement of the present invention, a groove is provided on a side of the substrate facing the cover plate and / or a side of the cover plate facing the substrate to form the flow channel.

[0006] As a further improvement of the present invention, the flow channel includes an inlet end, an outlet end, and an S-shaped flow guide channel connecting the inlet end and the outlet end, and the diverter block is located in the S-shaped flow guide channel.

[0007] As a further improvement of the present invention, the S-shaped flow guide includes a first flow segment extending along a first direction and a second flow segment extending along a second direction perpendicular to the first direction, and the diverter block is located in the first flow segment and extends along the first direction.

[0008] As a further improvement of the present invention, the diverter block includes a plurality of first diverter blocks arranged at intervals along the second direction and a second diverter block located between the plurality of first diverter blocks, and the width of the first diverter block is smaller than the width of the second diverter block.

[0009] As a further improvement of the present invention, the first flow section has a connecting portion located in the middle of its extending direction, the first diverter blocks are arranged at intervals along the first direction, and the gaps between the first diverter blocks form the connecting portion.

[0010] As a further improvement of the present invention, the flow channel further includes a connecting portion arranged at the inlet end, the outlet end and the second flow section, and the connecting portion is a connecting column or a connecting strip.

[0011] As a further improvement of the present invention, the heat sink further comprises a heat sink running through the heat sink, and the heat sink is located between two adjacent first flow sections.

[0012] As a further improvement of the utility model, it also includes a heat conducting plate located between the substrate and the light source.

[0013] The utility model also provides a solar cell production device, comprising a furnace body and the above light source device arranged in the furnace body.

[0014] Beneficial effects of the utility model: The utility model forms the flow channel through the substrate and the cover plate, and the coolant flowing in the flow channel absorbs the heat generated by the light source to achieve cooling of the light source. The flow rate of the coolant and the heat exchange efficiency are increased by adding the diverter block in the flow channel, thereby enhancing the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a side view of the light source device of the utility model;

[0017] Figure 2 A schematic diagram of the light source device of the utility model from another viewing angle;

[0018] Figure 3 A schematic diagram of the light source device of the utility model from another viewing angle;

[0019] Figure 4 This is an exploded view of the light source device of the utility model;

[0020] Figure 5 This is an exploded view of the heat sink of the utility model;

[0021] Figure 6 A schematic diagram of a flow channel in one embodiment of the utility model;

[0022] Figure 7 It is a schematic diagram of a flow channel in another embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0026] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0027] like Figures 1 to 7 As shown, the light source device provided by the utility model includes a heat sink 100 and a light source 200. The light source 200 is fixed to the outer surface of the heat sink 100. A refrigerant flows in the heat sink 100. The flowing refrigerant absorbs the heat generated by the light source 200 to reduce the temperature of the light source 200.

[0028] The heat sink 100 includes a base plate 101, a cover plate 102 connected to the base plate 101, and a flow channel 103 for circulating a refrigerant between the base plate 101 and the cover plate 102. The cover plate 102 is connected to the upper surface of the base plate 101, and the flow channel 103 is formed between the two. The light source 200 is connected to the lower surface of the base plate 101, and the refrigerant flowing in the flow channel 103 absorbs the heat of the light source 200.

[0029] A groove is provided on one side of the substrate 101 facing the cover plate 102 and / or a groove is provided on one side of the cover plate 102 facing the substrate 101 to form the flow channel 103. That is, a groove is provided on the upper surface of the substrate 101 and / or the lower surface of the cover plate 102, and then the substrate 101 and the cover plate 102 are connected to form the flow channel 103.

[0030] In a specific embodiment, a groove is provided on the upper surface of the substrate 101, and the cover plate 102 is connected to the substrate 101 to close the groove to form the flow channel 103. The cover plate 102 is provided with a liquid inlet 102a and a liquid outlet 102b connected to the flow channel 103. The refrigerant enters the flow channel 103 from the liquid inlet 102a, absorbs the heat of the light source 200 while flowing along the flow channel 103, and finally flows out from the liquid outlet 102b.

[0031] The base plate 101 and the cover plate 102 are preferably made of aluminum or other metal materials with good thermal conductivity. The base plate 101 and the cover plate 102 are preferably connected by vacuum brazing, so that the base plate 101 and the cover plate 102 become a whole without obvious welding marks, which can effectively prevent the leakage of the refrigerant. The refrigerant can be water or other fluids.

[0032] The flow channel 103 includes an inlet end 103b, an outlet end 103c, and an S-shaped flow guide 103d connecting the inlet end 103b and the outlet end 103c. The inlet end 103b is connected to the liquid inlet 102a, and the outlet end 103c is connected to the liquid outlet 102b. The S-shaped flow guide 103d can extend the flow path of the refrigerant, increase the contact heat exchange area between the refrigerant and the heat sink 100, thereby improving the heat exchange efficiency with the light source 200 and enhancing the cooling effect.

[0033] A diverter block 103a is provided in the flow channel 103 to divert the refrigerant. Specifically, the diverter block 103a is provided in the S-shaped flow guide 103d. The diverter block 103a is used to divert the refrigerant flowing in the S-shaped flow guide 103d. On the one hand, it can compress the circulation space in the S-shaped flow guide 103d, increase the number of flow guides, and thus speed up the refrigerant flow rate and heat exchange, and enhance the cooling effect; on the other hand, the diverter block 103a also increases the contact heat exchange area between the refrigerant and the heat sink 100.

[0034] The S-shaped flow guide 103d includes a first flow segment 103d-1 extending along a first direction and a second flow segment 103d-2 extending along a second direction perpendicular to the first direction. The length of the first flow segment 103d-1 extending along the first direction is greater than the length of the second flow segment 103d-2 extending along the second direction. The second flow segment 103d-2 is used as a transition segment to connect two adjacent first flow segments 103d-1 end to end. The diverter block 103a is located in the first flow segment 103d-1 and extends along the first direction to divert the refrigerant flowing in the first flow segment 103d-1.

[0035] The diverter block 103a includes a plurality of first diverter blocks 103a-1 arranged at intervals along the second direction and a second diverter block 103a-2 located between the plurality of first diverter blocks 103a-1. The width of the first diverter block 103a-1 is smaller than the width of the second diverter block 103a-2.

[0036] The second flow diverter block 103a-2 is located in the middle of the first flow segment 103d-1 to divide the first flow segment 103d-1 into two relatively independent large flow guides. The second flow diverter block 103a-2 is used to further subdivide the large flow guide into a plurality of small flow guides. The first flow diverter block 103a-1 is combined with the second flow diverter block 103a-2 to realize the diversion in the first flow segment 103d-1, accelerate the circulation speed of the refrigerant, and enhance the cooling effect.

[0037] At the same time, by providing the first shunt block 103a-1 and the second shunt block 103a-2, the welding contact area between the substrate 101 and the cover plate 102 can be increased to prevent the heat sink 100 from bulging at the location of the first flow section 103d-1 due to thermal expansion and contraction.

[0038] In some embodiments, the first flow segment 103d-1 has a connecting portion located in the middle of its extension direction. At least the first diverter block 103a-1 is not provided at the location of the connecting portion, so that the refrigerants in several small flow guides are mixed in the connecting portion, preventing the uneven temperature of the substrate 101 from causing the refrigerants in the small flow guides to absorb uneven heat and affect the cooling effect. The refrigerants in the small flow guides are diverted again after mixing in the connecting portion, and the temperature of the refrigerants flowing into each of the small flow guides after diversion is basically kept balanced for subsequent heat exchange.

[0039] Specifically, the first diverter blocks 103a-1 are arranged at intervals along the first direction, and the gaps between the first diverter blocks 103a-1 form the connecting portion, so that the refrigerant in the small flow channels can be mixed when flowing through the connecting portion to prevent uneven refrigerant temperature in each of the small flow channels.

[0040] Of course, the second flow diverter block 103a-2 may not be provided at the location of the connecting portion. In this way, the two large flow guides can also be connected at the connecting portion, and the refrigerants in the two large flow guides can also be mixed when flowing through the connecting portion. The setting method of the second flow diverter block 103a-2 can refer to the first flow diverter block 103a-1, and will not be repeated here.

[0041] The flow channel 103 further includes a connecting portion 103e disposed at the inlet end 103b, the outlet end 103c and the second flow section 103d-2. The connecting portion 103e is used to increase the welding contact area between the substrate 101 and the cover plate 102, and prevent the heat sink 100 from bulging at the inlet end 103b, the outlet end 103c and the second flow section 103d-2 due to thermal expansion and contraction.

[0042] Reference Figure 6 In one embodiment, the connecting portion 103e is a connecting column disposed in the inlet end 103b, the outlet end 103c and the second flow section 103d-2. The connecting columns are disposed in the inlet end 103b, the outlet end 103c and the second flow section 103d-2 at equal intervals. The connecting column is preferably a cylinder to reduce the resistance of the refrigerant circulation.

[0043] Reference Figure 7 In another embodiment, the connection part 103e in the inlet end 103b and the outlet end 103 is a connection column; the connection part 103e in the second flow segment 103d-2 is a connection bar extending along the second direction. The connection bars are arranged at intervals along the first direction, and the length of the connection bars gradually increases in the direction away from the first flow segment 103d-1, so that the refrigerant in the first flow segment 103d-1 flows into the second flow segment 103d-2.

[0044] In some embodiments, the heat sink 100 further includes a heat sink 104 that penetrates the heat sink 100, and the heat sink 104 is located between two adjacent first flow segments 103d-1. The heat sink 104 is parallel to the first flow segment 103d-1. The heat sink 104 forms a heat dissipation duct to dissipate heat from the heat sink 100.

[0045] The light source 200 includes a light source board 201 and LED light emitting elements 202 arranged in a matrix on the light source board 201, and the LED light emitting elements 202 are fixed to the lower surface of the substrate 101 through the light source board 201. The light source board 201 and the substrate 101 are provided with corresponding screw holes, and the two are connected by screws. Preferably, the second shunt block 103a-2 is also provided with corresponding screw holes.

[0046] In a specific embodiment, the light sources 200 are arranged in three independent groups along the second direction. The light sources 200 correspond to the first flow sections 103d-1 one by one. It can be understood that the heat dissipation slots 104 divide the heat dissipation plate 100 into multiple installation intervals, each of which corresponds to a group of the light sources 200, so that multiple groups of the light sources 200 can be cooled.

[0047] The light source device further includes a heat conducting plate 300 located between the substrate 101 and the light source 200 , and a temperature sensor 400 connected to the heat dissipation plate 100 to detect the temperature of the light source 200 .

[0048] In the case where the light source plate 201 is directly connected to the substrate 101, if the contact surface flatness of the light source plate 201 and the substrate 101 is not good, it will lead to low heat conduction efficiency between the two and poor cooling effect. Therefore, the present application adds the heat conducting plate 300 between the light source plate 201 and the substrate 101. The heat conducting plate 300 is made of a material with good thermal conductivity. By adding the heat conducting plate 300, the heat generated by the light source 200 can be better transferred to the substrate 101, so that the heat of the light source 200 is taken away by the refrigerant flowing in the flow channel 103, and the light source 200 is effectively exchanged and cooled. The heat conducting plate 300 is preferably made of graphite.

[0049] The temperature sensor 400 is used to detect the temperature of the light source 200, so as to adjust the flow rate in the flow channel 103 in real time according to the temperature of the light source 200, thereby ensuring that the light source 200 is in a suitable temperature range and extending its service life.

[0050] The refrigerant enters the flow channel 103 from the liquid inlet 102a, first flows into the first first flow segment 103d-1 of the S-shaped flow guide 103d through the inlet end 103b, and is diverted by the diverter block 103a to speed up the flow rate of the refrigerant, and completes the primary mixing when flowing through the connecting portion; then flows into the next first flow segment 103d-1 through the second flow segment 103d-2, and completes the secondary mixing when flowing through the second flow segment 103d-2; finally, it flows out from the liquid outlet 102b through the outlet end 103c. The refrigerant absorbs the heat conducted from the light source 200 to the heat sink 100 during the flow along the flow channel 103, so as to cool the light source 200.

[0051] The utility model also provides a solar cell production device, which comprises a furnace body, wherein the light source device is located in the furnace body, and the solar cell production device using the light source device is used for passivation treatment of solar cells.

[0052] In summary, the utility model forms the flow channel 103 through the substrate 101 and the cover plate 102, and the coolant flowing in the flow channel 103 absorbs the heat generated by the light source 200 to achieve cooling of the light source 200. The flow velocity of the coolant and the heat exchange efficiency are increased by adding the diverter block 103a in the flow channel 103, thereby enhancing the cooling effect.

[0053] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0054] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the utility model and are not intended to limit the protection scope of the utility model. Any equivalent embodiments or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A light source device, characterized in that: include: A heat sink (100) comprises a base plate (101), a cover plate (102) connected to the base plate (101), and a flow channel (103) for circulating a refrigerant between the base plate (101) and the cover plate (102), wherein a flow dividing block (103a) is arranged in the flow channel (103); A plurality of light sources (200) are located on a side of the substrate (101) facing away from the cover plate (102).

2. The light source device according to claim 1, characterized in that: A groove is provided on a side of the substrate (101) facing the cover plate (102) and / or a side of the cover plate (102) facing the substrate (101) to form the flow channel (103).

3. The light source device according to claim 1, characterized in that: The flow channel (103) comprises an inlet end (103b), an outlet end (103c), and an S-shaped flow guide channel (103d) connecting the inlet end (103b) and the outlet end (103c), and the flow diversion block (103a) is located in the S-shaped flow guide channel (103d).

4. The light source device according to claim 3, characterized in that: The S-shaped flow guide (103d) comprises a first flow segment (103d-1) extending along a first direction and a second flow segment (103d-2) extending along a second direction perpendicular to the first direction; the flow dividing block (103a) is located in the first flow segment (103d-1) and extends along the first direction.

5. The light source device according to claim 4, characterized in that: The diverter block (103a) comprises a plurality of first diverter blocks (103a-1) arranged at intervals along the second direction and a second diverter block (103a-2) located between the plurality of first diverter blocks (103a-1), and the width of the first diverter block (103a-1) is smaller than the width of the second diverter block (103a-2).

6. The light source device according to claim 5, characterized in that: The first flow section (103d-1) has a connecting portion located in the middle of its extending direction, and the first diverter blocks (103a-1) are arranged at intervals along the first direction, and the gaps between the first diverter blocks (103a-1) form the connecting portion.

7. The light source device according to claim 4, characterized in that: The flow channel (103) further comprises a connecting portion (103e) arranged in the inlet end (103b), the outlet end (103c) and the second flow section (103d-2), and the connecting portion (103e) is a connecting column or a connecting strip.

8. The light source device according to claim 4, characterized in that: The heat dissipation plate (100) further comprises a heat dissipation slot (104) penetrating the heat dissipation plate (100), wherein the heat dissipation slot (104) is located between two adjacent first flow sections (103d-1).

9. The light source device according to claim 1, characterized in that: It also includes a heat conducting plate (300) located between the substrate (101) and the light source (200).

10. A solar cell production device, comprising a furnace body, characterized in that: The furnace body is provided with a light source device as described in any one of claims 1 to 9.

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