CN114686962A

CN114686962A - Water-cooling structure and mono-like ingot casting equipment with same

Info

Publication number: CN114686962A
Application number: CN202011595280.7A
Authority: CN
Inventors: 唐珊珊; 陈志军; 李林东
Original assignee: Baotou Ates Sunshine Energy Technology Co ltd; CSI Cells Co Ltd; Atlas Sunshine Power Group Co Ltd
Current assignee: Baotou Ates Sunshine Energy Technology Co ltd; CSI Cells Co Ltd; Canadian Solar Inc
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-07-01

Abstract

The invention discloses a water cooling structure and single crystal-like ingot casting equipment with the same. According to the water cooling structure of the single crystal-like ingot casting equipment, the water inlet branch and the water outlet branch are arranged in the heat dissipation base body, so that cooling water can enter the water inlet branch through the water inlet and then flow out of the water outlet through the water outlet branch. Therefore, in the flowing process of the cooling liquid, the cooling liquid can exchange heat with the heat dissipation base body, and then heat on the heat dissipation base body can be taken away, so that the purpose of heat dissipation is achieved.

Description

Water-cooling structure and mono-like ingot casting equipment with same

Technical Field

The invention relates to the technical field of single crystal-like ingots, in particular to a water cooling structure and single crystal-like ingot casting equipment with the same.

Background

In recent years, solar cells with rapid development, low cost and high efficiency in the technical field of photovoltaic industry are more and more favored by people. Crystalline silicon, which is a main material of a solar cell, mainly includes single crystal silicon and polycrystalline silicon.

In the related technology, the polycrystalline ingot casting technology in the photovoltaic industry is low in process efficiency of full melting, so most manufacturers mainly choose half melting as a main option, but whether the process is the half melting process or the full melting process, a certain heat dissipation amount is obtained by opening and closing a heat insulation cage, and therefore a cooling mode of crystallization at a certain temperature gradient after melting at a high temperature is completed.

The bottom of the heat insulation cage mainly depends on the heat radiation of the heat radiation table to the inner wall of the furnace body, and the cooling water in the furnace chamber takes away the heat to realize directional solidification. Because the heat radiating platform is of a square structure, the inner wall of the lower furnace body is of a circular structure, under the action of the cage opening, the heat radiating capacity of the periphery and the center of the crucible is not uniformly distributed, so that most of edge crystalline grains grow obliquely, the area of the crystal grains growing around the quasi-single crystal is seriously influenced, and the heat radiating capacity of the edge and the center is unbalanced, so that the quasi-single crystal under the cage opening has the defect of high dislocation, and the process for developing the quasi-single crystal by using the traditional GT furnace is very slow in recent years.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the water cooling structure of the single crystal-like ingot casting equipment, and the water cooling structure of the single crystal-like ingot casting equipment has the advantages of simple processing structure, low cost, small process difficulty and high cooling efficiency.

The invention provides single crystal-like ingot casting equipment which is provided with the water cooling structure.

The water cooling structure of the single crystal-like ingot casting equipment comprises: the heat dissipation base member, heat dissipation base member surface has water inlet and delivery port, be equipped with into water branch road and play water branch road in the heat dissipation base member, it is many to intake the branch road with the water inlet all communicates, go out the water branch road with the delivery port intercommunication, many it passes through to intake the branch road go out the water branch road with the delivery port intercommunication.

According to the water cooling structure of the single crystal-like ingot casting equipment, the water inlet branch and the water outlet branch are arranged in the heat dissipation base body, so that cooling water can enter the water inlet branch through the water inlet and then flow out of the water outlet through the water outlet branch. Therefore, in the flowing process of the cooling liquid, the cooling liquid can exchange heat with the heat dissipation base body, and then heat on the heat dissipation base body can be taken away, so that the purpose of heat dissipation is achieved.

In some embodiments, the inlet branch includes that the first inflow that communicates in proper order collects the runner, the tributary runner of intaking and the second inflow that collects the runner, the tributary runner of intaking is many, the first inflow collects the runner and is used for compiling the rivers of water inlet, the rivers that the first inflow collected in the runner are through many the tributary runner of intaking is in the second is intake and is collected in the runner and collect, the second is intake and is collected the water of runner and pass through the outlet branch flow direction the delivery port.

In some embodiments, the first incoming water collecting channel is located in the middle of the heat dissipating base body, the second incoming water collecting channels are multiple, one part of the second incoming water collecting channels is located on one side of the first incoming water collecting channel, and the other part of the second incoming water collecting channels is located on the other side of the first incoming water collecting channel; and any one of the second water inlet collecting flow channels is communicated with the first water inlet collecting flow channel through at least one water inlet branch flow channel.

In some embodiments, the plurality of second influent collecting channels are parallel to each other.

In some embodiments, there are at least two influent tributary channels located on the same line.

In some embodiments, the water inlet branch is of the same construction as the water outlet branch.

In some embodiments, the water outlet branch includes a first water outlet collecting channel, a plurality of water outlet branch channels, and a second water outlet collecting channel, which are sequentially connected to each other, where the number of the water outlet branch channels is multiple, the number of the first water outlet collecting channels is multiple, each of the first water outlet collecting channels is communicated with the water inlet branch, water in the first water outlet collecting channel is collected in the second water outlet collecting channel through the plurality of water outlet branch channels, and water in the second water inlet collecting channel flows out of the heat dissipation base through the water outlet.

In some embodiments, the second effluent collecting channel is located in the middle of the heat dissipation base body, one part of the first effluent collecting channels is located on one side of the second effluent collecting channel, and the other part of the first effluent collecting channels is located on the other side of the second effluent collecting channel; any one of the first effluent collecting flow channel and the second effluent collecting flow channel is communicated through at least one effluent branch flow channel.

In some embodiments, the heat dissipation base body has a plurality of process holes therein, each process hole is a hole for constructing the water inlet branch and the water outlet branch, and the process holes are sealed and blocked by sealing nuts.

In some embodiments, the heat-dissipating substrate is a copper disk.

The single crystal-like ingot casting equipment comprises a heat dissipation table; the heat insulation cage is arranged on the heat dissipation table; the water cooling structure is any one of the water cooling structure of the single crystal-like ingot casting equipment, and the water cooling structure is arranged in the heat insulation cage and is positioned at the bottom of the heat insulation cage.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a water cooling structure of a single crystal-like ingot casting device according to an embodiment of the invention;

FIG. 2 is a schematic structural diagram of a water cooling structure of a single crystal-like ingot casting device provided with a sealing nut according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a water cooling structure of a single crystal-like ingot casting device provided with a sealing nut according to an embodiment of the invention.

Reference numerals:

a water cooling structure 100, a water inlet 110, a water outlet 120, a seal nut 150,

the heat-dissipating substrate 160, the process holes 161,

a water inlet branch 130, a first water inlet collecting channel 131, a water inlet branch channel 132, a second water inlet collecting channel 133,

the system comprises a water outlet branch 140, a first water outlet collecting channel 141, a water outlet branch channel 142 and a second water outlet collecting channel 143.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A water cooling structure 100 of a single crystal-like ingot casting apparatus according to an embodiment of the present invention is described below with reference to fig. 1 to 3.

Referring to fig. 1-3, the water cooling structure 100 of the single crystal-like ingot casting apparatus may include a heat dissipating base 160. In the example shown in fig. 1, the heat-dissipating substrate 160 may have a square structure. The surface of the heat dissipation base 160 may have a water inlet 110 and a water outlet 120, a water inlet branch 130 and a water outlet branch 140 may be disposed in the heat dissipation base 160, the water inlet branch 130 may be multiple, multiple water inlet branches 130 may be communicated with the water inlet 110, the water outlet branch 140 may be communicated with the water outlet 120, and multiple water inlet branches 130 may be communicated with the water outlet 120 through the water outlet branch 140. In the description of the present invention, "a plurality" means two or more.

It should be noted that, as shown in fig. 1, cooling water may enter through the water inlet 110, sequentially flow into the plurality of water inlet branches 130, then flow into the water outlet branch 140 communicated with the water inlet branch 130, and finally flow out from the water outlet 120, thereby forming a water flowing process. The coolant can take away heat from the heat dissipating substrate 160 during flowing, thereby dissipating heat. Because the water cooling structure 100 of the single crystal-like ingot casting equipment can comprise the heat dissipation base body 160, the heat of the water can be dissipated after the water flows in from the water inlet 110 and then flows out from the water outlet 120, and therefore, the directional solidification of the single crystal-like ingot can be realized. Here, it should be further noted that "cooling water" may be water, water with cooling liquid, or other fluid, and is not particularly limited herein.

According to the water cooling structure 100 of the single crystal-like ingot casting equipment provided by the embodiment of the invention, the water inlet branch 130 and the water outlet branch 140 are arranged in the heat dissipation base body 160, so that cooling water can enter the water inlet branch 130 through the water inlet 110 and then flow out of the water outlet 120 through the water outlet branch 140. Therefore, in the flowing process of the cooling liquid, the cooling liquid can exchange heat with the heat dissipation base 160, and further can take away heat on the heat dissipation base 160, so that the purpose of heat dissipation is achieved.

According to an embodiment of the present invention, as shown in fig. 1, the inlet branch 130 may include a first inlet collecting channel 131, a plurality of inlet branch channels 132, and a second inlet collecting channel 133, which are sequentially connected to each other, the inlet branch channels 132 may be provided in plurality, the first inlet collecting channel 131 may be configured to collect water flow from the inlet 110, water flow in the first inlet collecting channel 131 may be collected in the second inlet collecting channel 133 through the plurality of inlet branch channels 132, and water in the second inlet collecting channel 133 may flow to the outlet 120 through the outlet branch 140. In the description of the present invention, "a plurality" means two or more.

According to an embodiment of the present invention, as shown in fig. 1, the first incoming water collecting channel 131 may be located in the middle of the heat dissipating base, the second incoming water collecting channel 133 may be a plurality of channels, a portion of the plurality of second incoming water collecting channels 133 may be located at one side of the first incoming water collecting channel 131, and another portion of the plurality of second incoming water collecting channels 133 may be located at the other side of the first incoming water collecting channel 131; any one of the second influent collecting channels 133 may communicate with the first influent collecting channel 131 through at least one influent tributary channel 132.

It should be noted that, referring to fig. 1, the flow direction of the water flow in the water inlet branch 130 may flow into the first water inlet collecting channel 131 according to the direction of arrow a, and when the water flow flows to the water inlet branch channel 132, the water flow flows along the corresponding water inlet branch channel 132, for example, as shown by arrows a1, a2, and a3 in fig. 1; when the water flows to the second water inflow collecting channel 133, the water flows along the corresponding second water inflow collecting channel 133, for example, as shown by an arrow a4 or a5 in fig. 1.

In one embodiment of the present invention, referring to fig. 1, the plurality of second water inlet collecting channels 133 may be parallel to each other, and the plurality of second water inlet collecting channels 133 may be located in a horizontal direction. Further, referring to fig. 1, there may be at least two tributary influent channels 132 located on the same straight line, and the tributary influent channels 132 may be located in a vertical direction. Therefore, the flow direction of the water flow is uniformly distributed, the coverage area is wide, and the heat dissipation capacity is more, so that the cooling efficiency of the quasi-single crystal can be obviously improved.

In an embodiment of the present invention, referring to fig. 1, the inlet branch 130 may have the same structure as the outlet branch 140, and the inlet branch 130 and the outlet branch 140 may have a symmetrical structure.

In an embodiment of the present invention, referring to fig. 1, the outlet branch 140 may include a first outlet collecting channel 141, a plurality of outlet branch channels 142, and a second outlet collecting channel 143, which are sequentially connected to each other, the plurality of outlet branch channels 142 may be provided, the plurality of first outlet collecting channels 141 may be provided, each first outlet collecting channel 141 may be connected to the inlet branch 130, water in the first outlet collecting channel 141 may be collected in the second outlet collecting channel 143 through the plurality of outlet branch channels 142, and water in the second inlet collecting channel 133 may flow out of the heat dissipation substrate 160 through the outlet 120.

It should be noted that, referring to fig. 1, the flow direction of the water flow in the outlet branch 140 may flow into the first outlet collecting channel 141 according to the direction of arrow b1 or b5, and when the water flow flows to the outlet branch channel 142, the water flow flows along the corresponding outlet branch channel 142, for example, as shown by arrows b2, b3, b4 in fig. 1; when the water flows to the second outlet collecting flow channel 143, the water flows along the corresponding second outlet collecting flow channel 143, for example, as shown by an arrow b in fig. 1.

In summary, referring to fig. 1, the flow direction of the water flow in the water inlet branch 130 and the water outlet branch 140 can be performed according to the following steps:

first, water flows in from the water inlet 110, and flows into the first water inlet collecting channel 131 in the direction of arrow a, and when the water flows to the inlet tributary channels 132, the water flows along the corresponding inlet tributary channels 132, for example, as shown by arrows a1, a2, and a3 in fig. 1; when the water flows to the second water inflow collecting channel 133, the water flows along the corresponding second water inflow collecting channel 133, for example, as shown by an arrow a4 or a5 in fig. 1.

Then, when the water flows along the corresponding second water inlet collecting channel 133, for example, as shown by arrows a4 or a5 in fig. 1, the water may continue to flow into the first water outlet collecting channel 141 according to the direction of arrows b1 or b5, and when the water flows to the branched water outlet channel 142, the water flows along the corresponding branched water outlet channel 142, for example, as shown by arrows b2, b3, b4 in fig. 1; when the water flows to the second outlet water collecting flow passage 143, the water flows along the corresponding second outlet water collecting flow passage 143, for example, as shown by an arrow b in fig. 1.

Finally, the water flows to the water outlet 120 in the direction of the arrow b, so that the water flows out from the water outlet 120. The above completes the flow process of the water flow from the water inlet branch 130 to the water outlet branch 140.

In an embodiment of the present invention, referring to fig. 1, the second outlet collecting channel 143 may be located in the middle of the heat dissipating base 160, and the second outlet collecting channel 143 may be located on the same horizontal straight line as the first outlet collecting channel 141.

In one example of the present invention, referring to fig. 1, a portion of the plurality of first effluent collecting flow channels 141 may be positioned at one side of the second effluent collecting flow channel 143, and another portion of the plurality of first effluent collecting flow channels 141 may be positioned at the other side of the second effluent collecting flow channel 143; any one of the first effluent collecting channel 141 and the second effluent collecting channel 143 may communicate with each other through at least one effluent branch channel 142.

In an example of the present invention, referring to fig. 1, the plurality of first effluent collecting channels 141 may be parallel to each other, and the plurality of first effluent collecting channels 141 may be located in a horizontal direction. Further, referring to fig. 1, there may be at least two outlet branch runners 142 located on the same straight line, and the outlet branch runners 142 may be located in a vertical direction. Therefore, the flow direction of the water flow is uniformly distributed, the coverage area is wide, the heat dissipation capacity is high, and the cooling effect is good.

In one example of the present invention, as shown in fig. 1, the inlet branch 130 and the outlet branch 140 may communicate with each other, and thus, the first inlet collecting channel 131, the second inlet collecting channel 133, and the inlet branch channel 132 may communicate with the first outlet collecting channel 141, the second outlet collecting channel 143, and the outlet branch channel 142.

In an example of the present invention, referring to fig. 1, the pipe diameters of the water inlet 110, the first water inlet collecting channel 131, the second water inlet collecting channel 133, the water inlet branch channel 132, the water outlet 120, the first water outlet collecting channel 141, the second water outlet collecting channel 143, and the water outlet branch channel 142 may be designed to be different pipe diameters according to requirements, so that the cooling effect of each local part of the heat dissipation substrate 160 may be adjusted, and the cooling crystallization effect of the single crystal-like crystal may be effectively improved.

According to an embodiment of the present invention, referring to fig. 2 and 3, the heat dissipating base 160 may have a plurality of process holes 161 therein, each process hole 161 may be a hole for constructing the water inlet branch 130 and the water outlet branch 140, and the process holes 161 may be sealed and blocked by the sealing nuts 150. According to an example of the present invention, referring to fig. 2 and 3, the sealing nut 150 may be sealed by a dedicated pipe thread, or by adding a dedicated sealant for assisting sealing, or by welding a plug, so that a water circulation channel may be implemented, and the cooling crystallization effect of the quasi-single crystal may be affected by the water leakage of the heat dissipation base 160.

According to an embodiment of the present invention, referring to fig. 1-3, the heat dissipation substrate 160 may be a copper plate because the heat dissipation effect of copper is good, the structure and the processing process of the copper plate are simple, and the processing cost is low. According to an example of the present invention, referring to fig. 1 to 3, the heat dissipation substrate 160 may have a certain thickness, and the heat dissipation substrate 160 may be deformed less due to the increased strength, so that the stability is better.

As shown in fig. 1-3, a single crystal-like ingot casting apparatus according to an embodiment of the invention may include a heat sink, a thermal cage, and a water cooling structure 100. The heat insulation cage can be arranged on the heat dissipation table; the water cooling structure 100 may be the water cooling structure 100 of the single crystal-like ingot casting equipment as described above, and the water cooling structure 100 may be disposed in the heat insulation cage and may be located at the bottom of the heat insulation cage, so that the water cooling structure 100 may provide a good effect for cooling crystallization of the single crystal-like ingot casting equipment.

According to the single crystal-like ingot casting equipment provided by the embodiment of the invention, the water inlet branch 130 and the water outlet branch 140 are arranged in the heat dissipation base body 160, so that cooling water can enter the water inlet branch 130 through the water inlet 110 and then flow out of the water outlet 120 through the water outlet branch 140. Therefore, in the flowing process of the cooling liquid, the cooling liquid can exchange heat with the heat dissipation base body 160, and further can take away the heat on the heat dissipation base body 160, so that the purpose of heat dissipation is achieved.

In the description of the present invention, it is to be understood that the terms "center", "thickness", "upper", "lower", "rear", "vertical", "horizontal", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description herein, references to the description of "one embodiment," "some embodiments," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a water-cooling structure of kind single crystal ingot casting equipment, its characterized in that, includes the heat dissipation base member, heat dissipation base member surface has water inlet and delivery port, be equipped with into water branch road and play water branch road in the heat dissipation base member, it is many to intake the branch road, many intake the branch road with the water inlet all communicates, go out the water branch road with the delivery port intercommunication, many intake the branch road pass through go out the water branch road with the delivery port intercommunication.

2. The water cooling structure of the single crystal-like ingot casting equipment of claim 1, wherein the water inlet branch comprises a first water inlet collecting channel, a plurality of water inlet branch channels and a second water inlet collecting channel which are sequentially communicated, the first water inlet collecting channel is used for collecting the water flow of the water inlet, the water flow in the first water inlet collecting channel is collected in the second water inlet collecting channel through the plurality of water inlet branch channels, and the water in the second water inlet collecting channel flows to the water outlet through the water outlet branch.

3. The water-cooling structure of the mono-like ingot casting equipment as claimed in claim 2, wherein the first water inlet collecting runner is positioned in the middle of the heat dissipation base body,

the second water inlet collecting flow channels are multiple, one part of the second water inlet collecting flow channels is positioned on one side of the first water inlet collecting flow channel, and the other part of the second water inlet collecting flow channels is positioned on the other side of the first water inlet collecting flow channel;

and any one of the second water inlet collecting flow channels is communicated with the first water inlet collecting flow channel through at least one water inlet branch flow channel.

4. The water cooling structure of the single crystal-like ingot casting apparatus of claim 3, wherein the plurality of second water inlet collecting channels are parallel to each other.

5. The water cooling structure of the single crystal-like ingot casting equipment of claim 2, wherein at least two water inlet branch runners are located on the same straight line.

6. The water cooling structure of the single crystal-like ingot casting equipment of any one of claims 2 to 5, wherein the water inlet branch and the water outlet branch are identical in structure.

7. The water cooling structure of the single crystal-like ingot casting equipment of claim 1, wherein the water outlet branch comprises a first water outlet collecting channel, a plurality of water outlet branch channels and a second water outlet collecting channel which are sequentially communicated, each first water outlet collecting channel is communicated with the water inlet branch,

the water flow in the first water outlet collecting flow channel is collected in the second water outlet collecting flow channel through the plurality of water outlet branch flow channels, and the water flow in the second water inlet collecting flow channel flows out of the heat dissipation base body through the water outlet.

8. The water cooling structure of the single crystal-like ingot casting equipment of claim 7, wherein the second effluent collecting channel is positioned in the middle of the heat dissipation base body,

one part of the first effluent collecting channels is positioned at one side of the second effluent collecting channel, and the other part of the first effluent collecting channels is positioned at the other side of the second effluent collecting channel;

any one of the first effluent collecting flow channel and the second effluent collecting flow channel is communicated through at least one effluent branch flow channel.

9. The water-cooling structure of the single crystal-like ingot casting equipment of claim 1, wherein a plurality of process holes are formed in the heat dissipation base body, each process hole is a hole for constructing the water inlet branch and the water outlet branch, and the process holes are sealed and blocked by sealing nuts.

10. The water-cooling structure of the single crystal-like ingot casting equipment of claim 1, wherein the heat dissipation substrate is a copper disc.

11. A single crystal-like ingot casting apparatus, comprising:

a heat dissipation table;

the heat insulation cage is arranged on the heat dissipation table;

the water cooling structure of the single crystal-like ingot casting equipment as claimed in any one of claims 1 to 10, which is arranged in the heat insulation cage and at the bottom of the heat insulation cage.