Drying module and inserting piece type drying furnace

Abstract

The utility model discloses a drying module used for drying battery pieces, the drying module comprises a lower module and an upper module, and a drying cavity is defined between the upper module and the lower module. Two backflow devices which are symmetrically distributed up and down are arranged in the drying cavity, each backflow device comprises a partition plate assembly and a backflow mechanism, the partition plate assembly divides the drying cavity into a circulating air cavity and a process cavity in the vertical direction, and a plurality of air inlet holes are formed in the two sides, in the second direction, of the partition plate assembly; a plurality of air outlet holes are distributed between the air inlet holes in the two sides in an array mode. The backflow mechanism is located in the circulating air cavity and used for extracting gas in the process cavity from the air inlet hole and heating the gas, and then the heated gas is blown to the surface of the battery piece through the air outlet in the vertical direction. The drying module achieves internal circulation of gas, and the drying effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of battery slice processing equipment, in particular to a drying module and an inserting type drying furnace. Background Art

[0002] The inserting type drying furnace is one of the drying equipment for solar battery slices. Its drying module and transmission module are two important components. The solar battery slices are usually transmitted vertically into the drying module through the transmission module for drying. In the prior art, the drying module is usually a hot air circulation heating device. Most drying modules have inner and outer chambers, a suction device, a heating device and a drying cavity. The suction device can suck the gas in the outer chamber into the inner chamber and discharge it. The heating device is arranged at a narrow notch between the inner and outer chambers. There is a air supply port above the outer chamber. Through the heating of the heating device and the continuous supply of heat transfer medium at the air supply port, the long-term drying operation of the equipment is realized. However, this circulation method undoubtedly increases the difficulty of hot air circulation. The gas in the drying cavity is difficult to enter the outer chamber, resulting in continuous loss of high-temperature gas and continuous increase in energy consumption. Content of the Utility Model

[0003] To overcome the above disadvantages, the purpose of the utility model is to provide a drying module and an inserting type drying furnace, which can realize the internal circulation of gas and has a good drying effect.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a drying module for drying battery slices. The drying module includes a lower module and an upper module. A drying cavity is defined between the upper module and the lower module. Two reflux devices symmetrically distributed up and down are arranged in the drying cavity. Each reflux device includes:

[0005] A partition component, which is fixed to the side wall of the drying cavity. The partition component divides the drying cavity into a circulating air cavity and a process cavity in the vertical direction. The battery slices can move in the process cavity in an inclined state along a first direction. A plurality of air inlet holes are arranged on both sides of the partition component in a second direction. A plurality of air outlet holes are arranged in an array between the air inlet holes on both sides;

[0006] A reflux mechanism, which is located in the circulating air cavity. The reflux mechanism is used to extract the gas in the process cavity from the air inlet holes, heat it, and then blow the heated gas to the surface of the battery slices along the vertical direction through the air outlet.

[0007] The beneficial effect of the utility model lies in:

[0008] 1. Each reflux device separates the drying chamber through a partition assembly. The reflux mechanism forms a circulating air flow in the drying chamber, circulates and heats the gas in the drying chamber, and blows the heated gas vertically onto the surface of the battery cells. The reflux device circulates and heats the already heated gas in the drying chamber, reducing the leakage of gas from the drying chamber and energy loss.

[0009] 2. The air outlets are arranged on both sides of the partition assembly in the second direction. Since there are no battery cells here and the temperature requirement is low, even if the gas flows back into the circulating air chamber, it will not affect the drying of the battery cells. The air outlets are arranged in an array between the two side air inlet holes to uniformly dry the battery cells below the air outlets.

[0010] Furthermore, the reflux mechanism includes:

[0011] A heating box body, with a gap left between the side wall of the heating box body and the partition assembly leading to the circulating air chamber. The heating box body forms a heating cavity capable of heating the gas.

[0012] A gas pipeline directly connecting the heating cavity and the air inlet hole.

[0013] A turbo fan for blowing the gas heated in the heating cavity in all directions. The gas blown by the turbo fan enters the process chamber vertically downward through the gap from the air outlet holes.

[0014] Furthermore, a gas outlet is provided on the side of the heating box body away from the partition assembly. The turbo fan is arranged at the gas outlet. When the turbo fan rotates, it extracts the gas in the heating cavity from the gas outlet. The heated gas in the heating cavity flows out from the gas outlet and is blown in all directions along the circumference of the turbo fan under the action of the turbo fan.

[0015] Furthermore, the partition assembly includes a heating plate and a mesh plate that are sequentially distributed and fixedly connected in the vertical direction. Through holes with the same axis and the same size are provided on the heating plate and the mesh plate to form air inlet holes and air outlet holes.

[0016] Adding a heating plate to perform secondary heating on the gas about to enter the process chamber. The heating plate is arranged closer to the process chamber, which can compensate for the heat loss caused during gas transmission and ensure that the heat of the gas directly entering the process chamber meets the temperature requirement.

[0017] Furthermore, the reflux mechanism further includes a trumpet-shaped flow guide cover. The flow guide cover is located on the side of the turbo fan away from the heating housing. The flow guide cover includes a flow guide opening, and the flow guide opening faces the partition assembly in the vertical direction.

[0018] A deflector is provided to direct the heated gas blown out by the turbine fan towards the space between the heating housing and the partition assembly, preventing the gas blown out by the turbine fan from spreading and guiding the gas.

[0019] Furthermore, the gas outlet is located at the middle position on the side of the heating box away from the partition assembly. At this time, it can ensure that the gas in the heating cavity is evenly extracted and evenly blown into the space.

[0020] Furthermore, all the air outlet holes on the same side are directly communicated with the heating cavity through an air outlet pipe. This saves costs and eliminates the need to set up multiple air outlet pipes.

[0021] Furthermore, the turbine fan rotates driven by a motor, and the motor is fixed outside the drying module. The motor is located outside, which is convenient for the motor to dissipate heat.

[0022] The present utility model also discloses a plug-in drying furnace, which includes at least one of the above drying modules and a transmission device. The transmission device penetrates through the drying module along the first direction and is used for transmitting battery wafers. Description of the Drawings

[0023] Figure 1 It is a cross-sectional view of the drying module along the second direction in the first embodiment of the present utility model;

[0024] Figure 2 It is a cross-sectional view of the drying module along the first direction in the first embodiment of the present utility model;

[0025] Figure 3 It is a three-dimensional structure schematic diagram of the reflux mechanism in the first embodiment of the present utility model;

[0026] Figure 4 It is a structure schematic diagram of the reflux mechanism in the first embodiment of the present utility model;

[0027] Figure 5 It is a three-dimensional structure schematic diagram of the second embodiment of the present utility model.

[0028] In the figure:

[0029] 100, drying module; 200, transmission device; 300, battery wafer;

[0030] 11, upper module; 12, lower module; 13, drying cavity; 13a, circulating air cavity; 13b, process cavity; 14, partition assembly; 141, air inlet hole; 142, air outlet hole; 14a, heating plate; 14b, mesh plate; 15, heating box; 151, heating cavity; 1511, heating element; 152, gas outlet; 16, turbine fan; 17, motor; 18, gas pipe; 19, deflector. Detailed Embodiments

[0031] The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0032] Embodiment 1

[0033] See the attached Figure 1 and the attached Figure 2 As shown, a drying module 100 disclosed by the present invention includes a lower module 12 and an upper module 11 covering the lower module 12. A drying cavity 13 is defined between the upper module 11 and the lower module 12.

[0034] Two reflux devices are symmetrically arranged up and down in the drying cavity 13, and the battery cell 300 passes through between the two reflux devices. Each reflux device forms a circulating air flow. The reflux device circulates and heats the gas in the drying cavity 13, and blows the heated gas vertically onto the surface of the battery cell 300. At this time, the upper reflux device forms an upper circulating air flow, and the heated gas is blown vertically downward to dry the front side of the battery cell 300. The lower reflux device forms a lower circulating air flow, and the heated gas is blown vertically upward to dry the back side of the battery cell 300.

[0035] In this embodiment, after the air flow blows onto the battery cell, it will disperse around to form a dispersed air flow. The reflux device circulates and heats the dispersed gas in the drying cavity 13, and continues to send it into the drying cavity to heat the battery cell, forming a stable hot air flow to continuously dry the silicon wafer. The reflux device reduces the leakage of gas in the drying cavity 13 and reduces energy loss. At the same time, the circulating air flow formed by the reflux device can circulate and heat the gas and improve the uniformity of the gas blown onto the battery cell 300.

[0036] See the attached Figure 1 and the attached Figure 2 As shown, each reflux device includes a partition component 14. The partition component 14 is fixed to the side wall of the drying cavity 13. The partition component 14 divides the drying cavity 13 into a circulating air cavity 13a and a process cavity 13b in the vertical direction. The battery cell 300 enters and exits the process cavity 13b in an inclined state and is dried in the process cavity 13b. A reflux mechanism is arranged directly above the partition component 14 in the circulating air cavity 13a. The reflux mechanism is used to extract the gas in the process cavity 13b from the air inlet hole and heat it, and then blow the heated gas vertically onto the surface of the battery cell 300 through the air outlet. The reflux mechanism includes a heating box body 15 and a turbine fan 16.

[0037] The solar cell 300 within the process chamber 13b moves along the first direction (X direction), and the X direction is also the length direction of the drying chamber 13. The partition assembly 14 is provided with a plurality of air inlet holes 141 on both sides in the second direction (Y direction), and a plurality of air outlet holes 142 are arranged in an array between the air inlet holes 141 on both sides. The heating box body 15 is fixed between the partition assembly 14 and the turbine fan 16. There are spaces left between the heating box body 15 and the side wall of the circulating air chamber 13a and the partition assembly 14. The heating box body 15 forms a heating chamber 151 capable of heating gas. The heating chamber 151 is directly communicated with the heating chamber 151 through a gas pipeline 18 corresponding to the air inlet hole 141. The gas heated in the heating chamber 151 is scattered around by the turbine fan 16 and evenly blown out through the air outlet holes 142 after passing through the space.

[0038] In this embodiment, since the partition assembly 14 is connected to the side wall of the drying chamber 13, the gas exchange between the circulating air chamber 13a and the process chamber 13b can only be carried out through the air inlet holes 141 and the air outlet holes 142 on the partition assembly 14. The air inlet holes 141 are arranged on both sides in the Y direction, that is, both sides in the width direction of the drying chamber 13. Since there are no solar cells 300 directly below these two sides, it will not affect the drying of the solar cells 300.

[0039] In this embodiment, after the air flow vertically upward or downward from the air outlet holes 142 contacts the solar cell, heat conduction is formed, causing the temperature of the solar cell to rise. The air flow dissipates after contacting the solar cell, and the temperature of the dissipated air flow drops. The descending gas returns to the circulating air chamber through the plurality of air inlet holes 141 arranged on both sides in the second direction, making the temperature on one side close to the second direction side wall of the furnace body lower than the temperature of the central chamber, reducing the impact of high temperature on the furnace body shell. At the same time, due to the continuous heating of the reflux device, the heat absorbed by the solar cell can be continuously compensated, enabling the process chamber to maintain a stable specific heating temperature for a long time without being affected by the entry and exit of the solar cell into and out of the chamber.

[0040] See the appendix Figure 1 As shown, the arrow direction in the figure shows the direction of the gas flow within the process chamber 13b towards the heating chamber 151. The gas within the process chamber 13b enters from the air inlet and enters the heating chamber 151 through a dedicated gas pipeline 18. Since the heating box body 15 does not cover the entire circulating air chamber 13a, after the gas is heated in the heating chamber 151, it can be scattered by the turbine fan 16 to the space (that is, the circulating air chamber 13a outside the heating box body 15), and finally evenly blown out through the air outlet holes 142. The appendix Figure 2 The arrow direction in shows the direction of the gas flow in the heating chamber 151 towards the process chamber 13b. At this time, each reflux device forms a gas circulation where the gas in the process chamber 13b returns from both sides in the Y direction to the heating chamber 151 and then evenly returns to the process chamber 13b from the middle.

[0041] In one embodiment, referring to the attached Figure 4 and the attached Figure 2 As shown, a gas outlet 152 is provided on one side of the heating box body 15 away from the partition assembly 14, and a turbine fan 16 is arranged at the gas outlet 152. The turbine fan 16 can rotate under the drive of the motor 17. When rotating, the turbine fan 16 provides power for the flow of the gas. The turbine fan 16 extracts the gas in the heating cavity 151 from the gas outlet 152 and then blows the gas outwards along the circumference of the turbine fan 16. The motor 17 is fixed outside the drying module 100 and is exposed to the external air, which is convenient for the heat dissipation of the motor 17 and improves the service life of the motor 17.

[0042] In one embodiment, the gas outlet 152 is located at the middle position on one side of the heating box body 15 away from the partition assembly 14. At this time, it can ensure that the gas in the heating cavity 151 is evenly extracted and evenly blown into the interval.

[0043] In one embodiment, the gas pipeline 18 is fixed between the partition assembly 14 and the heating box body 15, that is, both ends of the gas pipeline 18 are fixedly connected to the partition assembly 14 and the heating box body respectively. The gas pipeline 18 forms a gas passage connecting the air outlet holes 142 and the heating cavity 151, and all the air outlet holes 142 on the same side are directly connected to the heating cavity 151 through an air outlet pipeline.

[0044] In one embodiment, the air inlet holes 141 on the same side can also be connected to the heating cavity 151 through a plurality of gas pipelines 18. As long as it is ensured that each air inlet hole 141 can be connected to the heating cavity 151 through the gas pipeline 18.

[0045] The heating box body 15 is located in the circulating air cavity 13a. In one embodiment, both ends of the heating box body 15 in the Y direction are fixed to the side wall of the circulating air cavity 13a, and both ends in the X direction do not abut against the side wall of the circulating air cavity 13a, that is, there is a gap between both ends of the heating box body 15 in the X direction and the side wall of the circulating air cavity 13a. As shown in the attached drawing, at this time, the length of the heating box body 15 in the X direction is less than the length of the partition assembly 14 in the X direction, which is convenient for the gas blown out by the turbine fan 16 to flow in the gap and enter the air outlet holes.

[0046] In one embodiment, referring to the attached Figure 3 As shown, the air outlet holes are circular holes, and the air inlet holes are strip-shaped structures. Because the number of air inlet holes is relatively small, in order to ensure that the gas can pass quickly, the area of the air inlet holes is increased to increase the gas flow rate.

[0047] A heating element 1511 is arranged in the heating cavity 151. In one embodiment, the heating element 1511 is a heating wire fixed in the heating cavity 151. When the heating wire is energized, it can heat the gas therein. The heating wire is connected to the controller, and the controller can control the power of the heating wire.

[0048] In one embodiment, a temperature sensor is provided in the process chamber 13b, and the temperature sensor is used to collect the temperature of the process chamber 13b in real time. The temperature sensor is connected to the controller for communication. When the temperature sensor detects that the temperature in the process chamber 13b is high, the power of the heating wire can be reduced by the controller; when the temperature sensor detects that the temperature in the process chamber 13b is low, the power of the heating wire can be increased by the controller.

[0049] In one embodiment, see the attached Figure 3 As shown, the partition assembly 14 includes a heating plate 14a and a mesh plate 14b which are distributed in sequence in the vertical direction and fixedly connected, and the heating plate 14a and the mesh plate 14b are provided with coaxial through holes of the same size to form an air inlet and an air outlet. The heating plate 14a is equipped with a heating wire to heat the passing gas.

[0050] In this embodiment, a heating plate 14a is added to perform secondary heating on the gas that is about to be blown into the process chamber 13b from the air outlet 142 to ensure that the temperature in the process chamber 13b is stable. In this embodiment, the heating plate 14a and the mesh plate 14b overlap in the Z direction, and the heating plate 14a is fixed on the side of the mesh plate 14b close to the process chamber 13b. The heated gas is blown into the process chamber 13b through the partition assembly 14. The heating plate 14a is set at a position closer to the process chamber 13b, which can compensate for the heat loss caused by the gas during the transmission process, so that the heat of the gas directly entering the process chamber 13b meets the temperature requirements.

[0051] Of course, in one embodiment, the partition assembly 14 may also only include the mesh plate 14b, and in this case, only the heating cavity 151 heats the gas therein.

[0052] In one embodiment, the partition assembly 14 may also only include the heating plate 14a. In this case, the heating plate 14a plays a role of conducting the gas on the one hand, and heating the gas on the other hand.

[0053] In one embodiment, the mesh plate 14b is made of heat-conducting material. In this case, the heating plate 14a can also heat the mesh plate 14b, and the two together heat the gas flowing through.

[0054] In one embodiment, see the attached Figure 1 and attached Figure 2 As shown, the return mechanism further includes a guide cover 19, which is fixed in the circulating air chamber 13a and located on the side of the turbofan 16 away from the heating shell. The guide cover 19 is fixed to the top or bottom of the drying chamber 13, and the guide cover 19 includes a guide port, which faces the partition assembly 14 along the vertical direction (Z direction).

[0055] In this embodiment, a deflector 19 is provided to direct the heated gas blown out by the turbine fan 16 towards the gap between the heating housing and the partition assembly 14, preventing the gas blown out by the turbine fan 16 from spreading everywhere and guiding the gas.

[0056] In one embodiment, the deflector 19 is in the shape of a horn, with the larger opening end being the deflector opening, and this end faces the partition assembly 14, while the smaller opening end is fixedly connected to the top or bottom of the drying chamber 13.

[0057] In this embodiment, a reflux device is adopted in the drying module 100 to circulate the gas in the drying chamber 13, generating flowing hot air to dry the battery wafers 300. It recycles the gas and avoids heat dissipation.

[0058] In one embodiment, the upper module 11 and the lower module 12 are hinged and can be buckled with each other to form an integral body. Thermal insulation cotton is also provided in the drying chamber 13, and the thermal insulation cotton is fixed on the housings of the upper module 11 and the lower module 12, and the thermal insulation cotton plays a role in insulating the drying chamber 13.

[0059] Embodiment Two

[0060] See the appendix Figure 5 As shown, a plug-in type drying furnace of the present utility model includes at least one drying module 100 in Embodiment One and a transmission device 200 that penetrates the drying module 100 in the X direction. The transmission device 200 is used to transmit the battery wafers 300 in the X direction.

[0061] The above embodiments are only for illustrating the technical concept and features of the present utility model, and their purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it. It cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A drying module for drying battery cells, comprising a lower module and an upper module, wherein a drying cavity is defined between the upper module and the lower module, and characterized in that: The drying chamber is provided with two reflux devices symmetrically distributed up and down, each of which comprises: A partition assembly, wherein the partition assembly is fixed to the side wall of the drying chamber, the partition assembly divides the drying chamber into a circulating air chamber and a process chamber in a vertical direction, the battery sheet can move in the process chamber along a first direction in an inclined state, the partition assembly is provided with a plurality of air inlet holes on both sides of a second direction, and a plurality of air outlet holes are distributed in an array between the air inlet holes on both sides; The reflux mechanism is located in the circulating air chamber and is used to extract the gas in the process chamber from the air inlet and heat it, and then blow the heated gas to the surface of the battery cell in a vertical direction through the air outlet.

2. The drying module according to claim 1, characterized in that: The reflux mechanism comprises: A heating box, wherein a distance is left between the heating box and the side wall and the partition assembly of the circulating air chamber, and the heating box forms a heating cavity capable of heating the gas; A gas pipeline, wherein the gas pipeline is directly connected to the heating cavity and the air inlet; The turbofan is used to blow the gas heated by the heating chamber to all directions. The gas blown by the turbofan passes through the gap and enters the process chamber vertically downward from the air outlet.

3. The drying module according to claim 2, characterized in that: The heating box is provided with a gas outlet on a side away from the partition assembly, and the turbofan is arranged at the gas outlet. When the turbofan rotates, it extracts gas in the heating cavity from the gas outlet.

4. The drying module according to claim 1, characterized in that: The partition assembly includes a heating plate and a mesh plate which are sequentially distributed and fixedly connected in the vertical direction, and the heating plate and the mesh plate are provided with through holes which are coaxially arranged and have the same size to form air inlets and air outlets.

5. The drying module according to any one of claims 1 to 4, characterized in that: The return flow mechanism further comprises a trumpet-shaped air deflector, which is located on a side of the turbofan away from the heating shell. The air deflector comprises an air guide port, which faces the partition assembly in a vertical direction.

6. The drying module according to claim 3, characterized in that: The gas outlet is located at the middle position of a side of the heating box away from the partition assembly.

7. The drying module according to claim 2, characterized in that: All the air outlets located on the same side are directly connected to the heating cavity through an air outlet duct.

8. The drying module according to claim 2, characterized in that: The turbo fan is driven to rotate by a motor, and the motor is fixed outside the drying module.

9. A sheet-insertion drying oven, characterized in that: It comprises at least one drying module as claimed in any one of claims 1 to 8 and a transmission device, wherein the transmission device penetrates the drying module along a first direction and is used for transmitting battery cells.

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