CN212517225U - Sintering and annealing integrated furnace - Google Patents

Abstract

The utility model relates to a sintering and annealing integrated furnace, which comprises a drying zone, a sintering zone, a photo-thermal treatment zone and an annealing zone which are connected in sequence; the battery piece that awaits processing passes through drying zone, sintering district, light and heat treatment district and annealing district in proper order, wherein: the drying area is configured to dry the slurry after the screen printing of the battery piece; the sintering area is configured to perform sintering treatment on the passing battery piece; the photothermal treatment area is configured to perform illumination and heating treatment on the battery piece after the sintering treatment; the annealing area is configured to anneal the battery piece after the illumination and heating treatment. The utility model discloses a link into an organic whole drying zone, sintering district, light and heat treatment district and annealing district, dry, sintering, illumination heating and annealing to the battery piece that passes through respectively, can reduce the area of whole equipment, reduce cost to can improve the performance of battery piece.

Description

Sintering and annealing integrated furnace

Technical Field

The utility model relates to a solar wafer production line, specifically speaking are integrative stove of sintering annealing.

Background

The conventional production process of the solar cell comprises screen printing, sintering, annealing and the like, namely, the cell enters a sintering furnace for drying and sintering after the screen printing, and then enters an annealing furnace for annealing.

The existing sintering furnace comprises a sintering area and a cooling area, namely, the temperature of the battery piece is reduced to room temperature after sintering, and then the battery piece enters an annealing furnace for annealing treatment. The sintering furnace and the annealing furnace are two devices which are independent from each other, so that more space is occupied, unnecessary cooling is carried out, electric power is wasted, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sintering and annealing integrated furnace which occupies less space and reduces cost aiming at the problems related to the background technology.

The technical proposal of the sintering and annealing integrated furnace of the utility model is as follows: a sintering and annealing integrated furnace comprises a sintering area, a photo-thermal treatment area and an annealing area which are connected in sequence; the battery piece that awaits processing passes through sintering zone, light and heat treatment district and annealing district in proper order, wherein: the sintering area is configured to perform sintering treatment on the passing battery piece; the photothermal treatment area is configured to perform illumination and heating treatment on the battery piece after the sintering treatment; the annealing area is configured to anneal the battery piece after the illumination and heating treatment.

Through connecting sintering district, light and heat processing district and annealing district into an organic whole, sintering, illumination heating and annealing are carried out to the battery piece that passes through respectively, can reduce the area of whole equipment, reduce cost to can improve the performance of battery piece.

Further, the photothermal treatment zone comprises at least one first photothermal treatment module, and/or at least one second photothermal treatment module; the first photo-thermal treatment module comprises a first upper cavity, a first lower cavity, a first illumination device, a first heating device and a heat dissipation device; wherein: the first upper cavity is arranged above the first lower cavity, and a first transportation space for the battery piece to pass through is formed between the first upper cavity and the first lower cavity; the first illumination device is arranged on the first upper cavity and positioned above the first transportation space, and is used for illuminating the battery plates passing through the first transportation space; the first heating device is arranged on the first lower cavity and is positioned below the first transportation space, and the first heating device is used for heating the battery pieces passing through the first transportation space; the heat dissipation device is arranged on the first upper cavity and is configured to blow compressed air to the battery piece passing through the first transportation space; the second photo-thermal treatment module comprises a second upper cavity, a second lower cavity, a second illumination device, a second heating device and an air cooling device; wherein: the second upper cavity is arranged above the second lower cavity, and a second transportation space for the battery piece to pass through is formed between the second upper cavity and the second lower cavity; the second illumination device is arranged on the second upper cavity and positioned above the second transportation space, and the second illumination device is used for illuminating the battery plates passing through the second transportation space; the second heating device is arranged on the second lower cavity and is positioned below the second transportation space, and the second heating device is used for heating the battery pieces passing through the second transportation space; the air cooling device is installed on the second upper cavity and is configured to blow cold air to the battery piece passing through the second transportation space.

The battery plate is illuminated by the illumination device, heated by the heating device, and the efficiency of the battery plate is improved and the light attenuation performance of the battery plate is improved by utilizing the principle of photo-thermal effect; the battery plate is forcibly cooled through a heat dissipation device or an air cooling device, so that the quality of the battery plate is ensured; the photothermal treatment area adopts a modular design, and is convenient to manufacture and install.

Further, the first illumination device or the second illumination device respectively comprises an LED substrate and LED lamps, and the LED lamps are arranged on the LED substrate; the LED substrate is provided with a water cooling device, the water cooling device comprises a water cooling plate, a water cooling channel, a water inlet and a water outlet, the water cooling channel is arranged in the water cooling plate, and two ends of the water cooling channel are respectively communicated with the water inlet and the water outlet; the heat extraction device is installed to the below of LED base plate, and the heat extraction device forms first heat extraction space including first glass board and the second glass board that the interval set up about being located the lighting device below between lighting device and the first glass board, forms second heat extraction space between first glass board and the second glass board, and first heat extraction space and second heat extraction space all communicate with each other through gas pocket and external world.

The illuminating device adopts the LED lamp to illuminate the battery piece, so that the light injection intensity can be adjusted, the structure is simple, and the replacement is convenient; the illuminating device is provided with a water cooling device, and the water cooling plate is attached to the LED substrate and can cool the LED substrate and the LED lamp so as to prevent the LED lamp from generating faults due to high temperature; the first heat exhaust space and the second heat exhaust space of the heat exhaust device are respectively in gas exchange with the outside, so that heat generated by the illumination device and the heating device is exhausted, and the LED substrate and the LED lamp are further prevented from being in failure due to overheating.

Furthermore, the heat dissipation device comprises an air pipeline connected with a compressed air source, and the air pipeline is provided with a plurality of air outlet holes for discharging compressed air to the lower cavity.

The heat dissipation device blows air to the lower cavity, so that the temperature in the cavity can be reduced, the temperature in the cavity is uniform, and the heat dissipation device is mixed with residual waste gas possibly existing to facilitate discharging.

Furthermore, the air cooling device comprises a fan, a water cooling bar and air guide grooves, the two air guide grooves are respectively arranged at two sides of the bottom of the second upper cavity, the water cooling bar is arranged on each air guide groove, the fan is arranged on the water cooling bar, and a plurality of air holes facing the second transportation space are formed in each air guide groove; air blown out by the fan enters the air guide groove after being cooled by the water cooling exhaust, and then is blown to the battery piece passing through the second transportation space from the air hole; the water cooling row comprises a water cooling cavity, air channels, a water inlet and a water outlet, wherein the air channels are arranged on the water cooling cavity, and the water cooling cavity is respectively communicated with the water inlet and the water outlet.

The air cooling device combines the fan and the water cooling row, so that the cooling effect is improved; the air channel is arranged on the water cooling row, so that air passing through the air channel is cooled by water flowing in the water cooling drainage cold cavity, and the cooling effect of the air cooling device is improved.

Further, the first photothermal treatment module or the second photothermal treatment module further comprises a smoke exhaust device, the smoke exhaust device comprises an exhaust fan, a smoke exhaust pipe and a mesh plate, the mesh plate is positioned below the first heating device in the first lower cavity, or the mesh plate is positioned below the second heating device in the second lower cavity, the smoke exhaust pipe is connected between the first lower cavity and the exhaust fan, or the smoke exhaust pipe is connected between the second lower cavity and the exhaust fan, and a smoke inlet of the smoke exhaust pipe is positioned below the mesh plate; the exhaust fan extracts the gas in the first lower cavity or the second lower cavity through the smoke exhaust pipe.

High-temperature gas in the cavity is discharged through the smoke exhaust device, the temperature in the cavity is reduced, the quality of the battery piece is guaranteed, and meanwhile possible residual waste gas can be discharged in a smooth manner, so that the production environment is protected.

Further, first light and heat processing module or second light and heat processing module still include cavity elevating system on, and the cavity that goes up of each light and heat processing module links to each other, goes up cavity elevating system and includes support and drive arrangement, and the support links to each other with last cavity, and drive arrangement passes through the support and drives the cavity lift.

The upper cavity body can be lifted through the upper cavity body lifting mechanism, so that the upper cavity body and the lower cavity body are separated, and the maintenance is convenient.

Furthermore, the sintering area comprises a plurality of sintering modules, and an exhaust device and an air curtain component which are arranged at two ends of the plurality of sintering modules; the sintering module is configured to sinter the passing battery piece; the exhaust device is configured to exhaust the exhaust gas generated by the sintering module; the air curtain assembly is configured to block the circulation of exhaust gas generated by the sintering module to the front station and the rear station.

The sintering district adopts the sintering module to sinter the battery piece, reaches the eutectic temperature and forms ohmic contact, discharges organic waste gas through exhaust apparatus, says the station through air curtain subassembly separation waste gas entering front and back, is convenient for collect and discharges waste gas.

Furthermore, the annealing area comprises a heating section, a heating illumination section and a cooling section which are sequentially connected along the passing direction of the battery piece; the heating section comprises a plurality of heating modules, and the heating modules are configured to heat the passing battery piece; the heating illumination section is configured to illuminate and heat the passing battery plate; the cooling section is configured to cool the battery piece passing through.

The annealing area sequentially heats and light-injects the battery piece through the heating section, the heating illumination section and the cooling section, so that the annealing quality of the battery piece can be ensured.

Further, the sintering and annealing integrated furnace also comprises a drying area, and the drying area is positioned at a front station of the sintering area; the drying area comprises at least one drying module and a combustion tower connected to an outlet of the drying module; the drying module is configured to dry the passing battery piece; the burning tower is configured to treat the exhaust gas generated from the drying module.

And a drying area is arranged at a front station of the sintering area, and the slurry after screen printing of the battery piece is dried, so that the sintering quality of the battery piece can be ensured.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a drying area in an embodiment of the present invention.

Fig. 3 is a cross-sectional view of the drying module of the drying zone in the embodiment of the present invention.

Fig. 4 is a cross-sectional view of a combustion tower of a drying zone in an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a sintering zone in an embodiment of the present invention.

Fig. 6 is a cross-sectional view of a sintering zone in an embodiment of the invention.

Fig. 7 is a schematic perspective view of the photo-thermal treatment region according to an embodiment of the present invention after a plurality of first photo-thermal treatment modules are assembled.

Fig. 8 is a schematic perspective view of a single first photothermal treatment module of the photothermal treatment zone according to an embodiment of the present invention.

Fig. 9 is a partially enlarged view of fig. 8.

Fig. 10 is a front view of fig. 9.

Fig. 11 is a cross-sectional view of fig. 10.

Fig. 12 is a schematic perspective view of the photo-thermal treatment section according to an embodiment of the present invention after a plurality of second photo-thermal treatment modules are assembled.

Fig. 13 is a schematic perspective view of a single second photothermal treatment module of the photothermal treatment zone according to an embodiment of the present invention.

Fig. 14 is a partially enlarged view of fig. 13.

Fig. 15 is a front view of fig. 14.

Fig. 16 is a cross-sectional view of fig. 15.

Fig. 17 is a schematic perspective view of an annealing area in an embodiment of the present invention.

Fig. 18 is a schematic perspective view of a heating section of an annealing zone according to an embodiment of the present invention.

Fig. 19 is a cross-sectional view of a heating section of an annealing zone in an embodiment of the invention.

Fig. 20 is a schematic perspective view of a heating and lighting section of an annealing area in an embodiment of the present invention.

Fig. 21 is a cross-sectional view of a heating light section of an annealing zone in an embodiment of the invention.

Fig. 22 is a schematic perspective view of a heating module of a heating light section of an annealing zone in an embodiment of the present invention.

Fig. 23 is a schematic perspective view of a cooling section of an annealing zone according to an embodiment of the present invention.

Fig. 24 is a cross-sectional view of a cooling section of an annealing zone in an embodiment of the invention.

Fig. 1 to 24 show a sintering and annealing integrated furnace 1;

the drying device comprises a drying area 10, a drying module 11, an upper drying cavity 111, a lower drying cavity 112, air holes 113, an air-permeable heat-insulating plate 114, a fifth infrared lamp tube 115, heat-insulating cotton 116, a first thermocouple 117, a combustion tower 12, a long-axis fan 121, a heating reaction area 122, a small air tube 123, an atmospheric air tube 124, a first oil receiving box 125, a second thermocouple 126, an air-permeable shell 127 and a collecting cavity 128;

the sintering area 20, the sintering module 21, the upper sintering cavity 211, the lower sintering cavity 212, the sixth infrared lamp tube 213, the exhaust device 22, the exhaust pipe 221, the third thermocouple 222, the venturi structure 223, the second oil receiving box 224, the air curtain component 23, the upper air curtain cavity 231, the lower air curtain cavity 232, the air curtain 233 and the air blowing pipe 234;

a light-to-heat treatment zone (30),

a first photothermal processing module 31, a first upper cavity 311, a first lower cavity 312, a first illumination device 313, a first LED substrate 3131, a first LED lamp 3132, a first water cooling device 314, a first water cooling plate 3141, a first water cooling channel 3142, a first water inlet 3143, a first water outlet 3144, a first heat discharging device 315, a first glass plate 3151, a second glass plate 3152, a first heat discharging space 3153, a second heat discharging space 3154, a first air vent 3155, a heat dissipating device 316, an air duct 3161, an air outlet 3162, a first heating device 317, a first infrared lamp tube 3171, a first temperature measuring device 3172, a first transportation space 318, a first heat preservation cotton 3181, a first smoke discharging device 319, a first exhaust fan 3191, a first smoke discharging tube 3192, a first mesh plate 3193, a first smoke inlet 3194,

the second photothermal treatment module 32, a second upper cavity 321, a second lower cavity 322, a second illumination device 323, a second LED substrate 3231, a second LED lamp 3232, a second water cooling device 324, a second water cooling plate 3241, a second water cooling channel 3242, a second water inlet 3243, a second water outlet 3244, a second heat removal device 325, a third glass plate 3251, a fourth glass plate 3252, a third heat removal space 3253, a fourth heat removal space 3254, a second air hole 3255, an air cooling device 326, a first fan 3261, a water cooling row 3262, an air guide groove 3263, an air blowing hole 3264, an inlet 3265, an outlet 3266, a second heating device 327, a second infrared lamp tube 3271, a second temperature measuring device 3272, a second transportation space 32328, a second heat preservation cotton 3281, a second smoke exhaust device 329, a second exhaust fan 3291, a second smoke exhaust pipe 3292, a second mesh plate 3293 and a second smoke inlet 3294;

the annealing zone 40, the heating section 41, the heating module 411, the upper heating cavity 412, the lower heating cavity 413, the third infrared lamp tube 414, the fourth thermocouple 415, the heating and illuminating section 42, the heating and illuminating module 421, the upper heating and illuminating cavity 422, the lower heating and illuminating cavity 423, the water cooling plate 424, the LED substrate 425, the glass 426, the fourth infrared lamp tube 427, the lamp shade 428, the water inlet pipe 4241, the water outlet pipe 4242, the cooling section 43, the upper cooling cavity 431, the lower cooling cavity 432, the second fan 433, and the ventilation hole 434;

an upper chamber lifting mechanism 50, a bracket 51 and a driving device 52.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The utility model relates to a sintering and annealing integrated furnace for a solar cell production line.

Fig. 1 shows an alternative embodiment of a sintering and annealing integrated furnace 1, and fig. 1 is a perspective view of the apparatus. The sintering and annealing integrated furnace 1 sequentially comprises a drying zone 10, a sintering zone 20, a photo-thermal treatment zone 30 and an annealing zone 40 along the conveying direction of the battery piece. Wherein the sintering zone 20, the photothermal treatment zone 30 and the annealing zone 40 are the main components of the apparatus, and the drying zone 10 is an optional component of the apparatus. The device is provided with a transportation space for the battery piece to pass through along the conveying direction of the battery piece, namely the longitudinal direction. The battery pieces after the screen printing treatment at the previous station sequentially pass through the transportation space of the drying zone 10, the sintering zone 20, the photo-thermal treatment zone 30 and the annealing zone 40 under the driving of the conveying device. The conveying device can adopt various forms, and a common steel mesh belt conveyor, a common roller conveyor and the like are adopted. The steel mesh belt conveyor can adopt a steel mesh belt which can be compatible with various cell sizes, including 125mm, 156mm, 210mm and the like.

The drying area 10 is used for drying the slurry after screen printing of the battery piece, and the sintering area 20 is configured to sinter the battery piece passing through; the photothermal treatment zone 30 is configured to perform light irradiation and heating treatment on the battery piece after the sintering treatment; the annealing zone 40 is configured to anneal the battery piece after the light irradiation and heating treatment.

Through connecting sintering zone 20, light and heat treatment zone 30 and annealing district 40 into an organic whole, sintering, illumination heating and annealing are carried out to the battery piece that passes through respectively, can reduce the area of whole equipment, need not to reduce the battery piece temperature to the room temperature to reduce cost can improve the performance of battery piece.

The respective components of the sintering and annealing integrated furnace 1 will be described in detail in turn.

As shown in fig. 1, the drying zone 10 is located at a previous stage of the sintering zone 20. The drying area 10 is used for drying the battery plate after the screen printing treatment, and high-temperature organic waste gas is generated in the drying process.

Fig. 2 to 4 show an alternative embodiment of the drying section 10, fig. 2 being a perspective view of the section, fig. 3 being a sectional view of the drying module 11 in the section, and fig. 4 being a sectional view of the burner tower 12 in the section.

The drying zone 10 comprises at least one drying module 11 and a combustion tower 12 connected at the outlet of the drying module 11. In this embodiment, the number of the drying modules 11 is six. The drying module 11 is configured to dry the passing battery piece; the burning tower 12 is configured to treat the exhaust gas generated from the drying module 11.

And arranging a drying area 10 at a previous station of the sintering area 20, and drying the slurry after screen printing of the battery piece, so that the sintering quality of the battery piece can be ensured.

As shown in fig. 3, each drying module 11 includes an upper drying cavity 111 and a lower drying cavity 112, and a transportation space for battery sheets to pass through is formed between the upper drying cavity 111 and the lower drying cavity 112. The joint of the upper drying cavity 111 and the lower drying cavity 112 is provided with heat insulation cotton 116 which plays a role of heat insulation and can prevent the gas in the cavity from flowing out of the cavity to a certain extent.

Air holes 113 are respectively arranged on the upper drying cavity 111 and the lower drying cavity 112, and compressed air is filled into the cavities through the air holes 113. A plurality of fifth infrared lamp tubes 115 are arranged on the upper drying cavity 111 and/or the lower drying cavity 112 side by side and used for heating and drying the battery pieces. An air-permeable and heat-insulating board 114 is further disposed in the upper drying cavity 111, and the air-permeable and heat-insulating board 114 plays a role of heat preservation. The compressed air passes downwardly through the air permeable heat shield 114 and then flows downstream to the combustor 12 along with the flue gas. As shown in fig. 2, first thermocouple 117 is further installed on upper drying chamber 111 and/or lower drying chamber 112 for measuring the temperature in the chamber.

As shown in fig. 2, the combustion tower 12 is used for collecting and heating the organic waste gas generated by the drying module 11, and finally discharging the organic waste gas to a waste discharge pipeline in the plant.

As shown in fig. 4, the combustion tower 12 includes a collecting chamber 128, a heating reaction zone 122, a small gas pipe 123 and a large gas pipe 124 in sequence from bottom to top. The heating reaction zone 122, the small gas pipe 123 and the large gas pipe 124 form a venturi structure.

The collecting chamber 128 is used for collecting the organic waste gas generated by the drying module 11, and the long shaft fan 121 is installed on the collecting chamber 128 to draw out the waste gas in the collecting chamber 128 and send the waste gas into the heating reaction zone 122 of the combustion tower 12.

The heated reaction zone 122 heats the passing organic waste gas to a predetermined temperature, and continues to be discharged upward after sufficient reaction. Optionally, the predetermined temperature is selected to be 570 degrees celsius.

Waste gas comes to little trachea 123 from heating reaction zone 122, has experienced the process that the passageway is by big diminish, and the velocity of flow of waste gas can improve, spouts when the big trachea 124 entry to the trachea from the export of little trachea 123, can form the negative pressure, drives surrounding external air and follows high temperature waste gas and get into big trachea 124 together to reach the mesh of cooling waste gas.

When the organic exhaust gas is cooled in the atmospheric air duct 124, tar in the exhaust gas may be collected on the inner wall of the atmospheric air duct 124 and dropped, and therefore, the first oil receiving box 125 is provided around the small air duct 123.

The inner wall of the small air pipe 123 is also provided with an air nozzle for injecting air upwards, so that the flow rate of the waste gas can be further improved. A ventilation housing 127 is further installed at the periphery of the small air pipe 123 to protect the small air pipe 123.

The inner wall of the atmosphere tube 124 has a hole for inserting a second thermocouple 126 for measuring the temperature of the exhaust gas. The outlet above the atmosphere pipe 124 is connected to the exhaust pipe of the external factory.

As shown in fig. 1, the sintering zone 20 is a station located at the subsequent stage of the drying zone 10. The conveyor brings the battery pieces from the drying zone 10 to the sintering zone 20. The sintering zone 20 is used for sintering the cell at a higher temperature.

Fig. 5 and 6 show an alternative embodiment of the sintering zone 20, fig. 5 being a perspective view of the component and fig. 6 being a cross-sectional view of the component.

The sintering zone 20 includes a plurality of sintering modules 21, and an exhaust 22 and a curtain assembly 23 installed at both ends of the plurality of sintering modules 21. The sintering module 21 is configured to sinter the passing battery piece; the exhaust device 22 is configured to exhaust the exhaust gas generated by the sintering module 21; the air curtain assembly 23 is configured to block the circulation of exhaust gas generated by the sintering module 21 to the front and rear stations.

The sintering area 20 adopts a sintering module 21 to sinter the battery piece, the temperature is increased to a preset value to reach the Al-Si or Ag-Si eutectic temperature, ohmic contact is formed, waste gas is discharged through an exhaust device 22, and the waste gas is prevented from entering a front station and a rear station through an air curtain assembly 23.

Each sintering module 21 includes an upper sintering chamber 211 and a lower sintering chamber 212, and a transportation space for passing the battery piece is formed between the upper sintering chamber 211 and the lower sintering chamber 212. The joint of the upper sintering cavity 211 and the lower sintering cavity 212 is provided with heat insulation cotton which plays a role in heat insulation and prevents the exhaust gas in the cavity from flowing to the outside to a certain extent. A plurality of sixth infrared lamp tubes 213 are arranged in parallel on the upper sintering chamber 211 and/or the lower sintering chamber 212, and are used for sintering the battery pieces.

For a plurality of sintering modules 21, the air injection rate of the middle sintering module 21 is faster than that of the two sintering modules, so that the middle air pressure is slightly higher, the two air pressures are slightly lower, and the gas in the cavity is forced to flow to the exhaust devices 22 at the two ends and is finally exhausted.

Exhaust devices 22 are attached to both ends of the plurality of serially connected sintering modules 21. The exhaust device 22 includes an exhaust cavity 225, a venturi structure 223 and an exhaust pipe 221 from bottom to top.

The exhaust cavity 225 is used for collecting the exhaust gas generated by the sintering module 21, and the exhaust gas in the exhaust cavity 225 is exhausted through the venturi structure 223 and the exhaust pipe 221. The venturi structure 223 can increase the flow velocity of the exhaust gas, and drive the ambient air to enter the exhaust pipe 221, so as to cool the high-temperature exhaust gas.

A third thermocouple 222 is installed on the exhaust pipe 221 to measure the temperature of the exhaust gas. A second oil receiving box 224 is installed below the exhaust pipe 221 to collect oil droplets dropped from the exhaust pipe 221.

Two air curtain assemblies 23 are respectively installed on the outer sides of the two exhaust devices 22 and used for blocking the circulation of the exhaust gas. Each air curtain assembly 23 comprises an upper air curtain cavity 231 and a lower air curtain cavity 232, and a transportation space for battery pieces to pass through is formed between the upper air curtain cavity 231 and the lower air curtain cavity 232. Go up the interval in the air curtain cavity 231 and be provided with a plurality of air curtains 233, the battery piece passes through from the air curtain 233 below, is provided with the gas blow pipe 234 between adjacent air curtain 233, and the gas blow pipe 234 blows compressed air downwards, forms the air curtain, blocks the waste gas circulation in sintering area to a certain extent.

As shown in FIG. 1, the photothermal treatment zone 30 is located at a later stage of the sintering zone 20. The photothermal treatment region 30 is used for performing light irradiation and heating treatment on the battery piece after the sintering treatment.

The photothermal treatment zone 30 includes at least one first photothermal treatment module 31, and/or at least one second photothermal treatment module 32.

Fig. 7 to 11 show an alternative embodiment of the first photothermal treatment module 31, fig. 7 is a perspective view of a plurality of the first photothermal treatment modules 31 after assembly, fig. 8 is a perspective view of a single first photothermal treatment module 31, fig. 9 is a partial enlarged view of fig. 8, fig. 10 is a front view of a single first photothermal treatment module 31, and fig. 10 is a sectional view of a single first photothermal treatment module 31.

As shown in fig. 7 to 11, each of the first photothermal treatment modules 31 mainly includes a first upper cavity 311, a first lower cavity 312, a first illumination device 313 and a first heating device 317. Wherein: the first upper cavity 311 is installed above the first lower cavity 312, and a first transportation space 318 for passing the battery piece is formed between the first upper cavity 311 and the first lower cavity 312. The first illumination device 313 is used for illuminating the battery plates passing through the first transportation space 318; the first heating device 317 serves to heat the battery pieces passing through the first transport space 318.

The first illumination device 313 and the first heating device 317 may be arranged in various ways:

1. a first illuminating device 313 is arranged in the first upper cavity 311, and a first illuminating device 313 is arranged in the first lower cavity 312;

2. a first illuminating device 313 is arranged in the first upper cavity 311, and a first heating device 317 is arranged in the first lower cavity 312;

3. a first illuminating device 313 is arranged in the first upper cavity 311, and a first illuminating device 313 and a first heating device 317 are arranged in the first lower cavity 312;

4. a first heating device 317 is arranged in the first upper cavity 311, and a first heating device 317 is arranged in the first lower cavity 312;

5. a first heating device 317 is arranged in the first upper cavity 311, and a first illumination device 313 is arranged in the first lower cavity 312;

6. a first heating device 317 is arranged in the first upper cavity 311, and a first heating device 317 and a first illumination device 313 are arranged in the first lower cavity 312;

7. a first illuminating device 313 and a first heating device 317 are arranged in the first upper cavity 311, and a first illuminating device 313 and a first heating device 317 are arranged in the first lower cavity 312;

8. a first illumination device 313 and a first heating device 317 are arranged in the first upper cavity 311, and a first lower cavity 312 is not arranged;

9. the first illumination device 313 and the first heating device 317 are installed in the first lower cavity 312, and the first upper cavity 311 is not installed therein.

The conventional mounting methods are the 2 nd and 5 th methods.

This embodiment shows the installation mode 2. The first lighting device 313 is installed on the first upper chamber 311 and above the first transporting space 318, and the first heating device 317 is installed on the first lower chamber 312 and below the first transporting space 318.

The cell photo-thermal treatment device 31 illuminates the cell through the first illumination device 313, heats the cell through the first heating device 317, and improves the efficiency of the N-type cell and the P-type cell by utilizing the principle of photo-thermal effect, and improves the light decay phenomenon of the P-type cell to a certain extent.

The heating device has various options, such as an infrared lamp tube, a resistance wire and the like, and the infrared lamp tube is selected in the embodiment.

As shown in fig. 10 and 11, optionally, the first illumination device 313 includes a first LED substrate 3131 and a first LED lamp 3132, and the first LED lamps 3132 are mounted on the first LED substrate 3131.

The first illumination device 313 illuminates the battery sheet with the first LED lamp 3132, that is, the side of the first LED substrate 3131 on which the first LED lamp 3132 is mounted faces the battery sheet. The LED lamp is adopted to adjust the light injection intensity, the structure is simple, and the replacement is convenient.

As shown in fig. 10 and 11, a first water cooling device 314 is optionally mounted on the first illumination device 313. One embodiment of the first water cooling device 314 includes a first water cooling plate 3141, a first water cooling channel 3142, a first water inlet 3143, and a first water outlet 3144. There are many choices for the cooling liquid, and in consideration of the difficulty and cost of obtaining, this embodiment chooses to use water as the cooling liquid. The first water-cooling channel 3142 is disposed in the first water-cooling plate 3141, the first water-cooling plate 3141 is provided with a first water inlet 3143 and a first water outlet 3144, two ends of the first water-cooling channel 3142 are respectively communicated with the first water inlet 3143 and the first water outlet 3144, the first LED substrate 3131 is mounted on the first water-cooling plate 3141, and the first water-cooling plate 3141 and the first LED substrate 3131 are attached to each other on the surface where the first LED lamp 3132 is not mounted, so as to achieve a cooling effect. Cold water enters the first water cooling plate 3141 from the first water inlet 3143, passes through the first water cooling channel 3142 inside the first water cooling plate 3141, and is discharged from the first water outlet 3144. Alternatively, the first water cooling plate 3141 is plurally provided, and the first water cooling channel 3142 in each first water cooling plate 3141 is provided in a shape such as an S-shape, a zigzag shape, a spiral shape, or the like, which increases the path length of water as much as possible. In this embodiment, the S-shaped first water cooling channel 3142 may increase a contact area with the cold water, and increase a path length through which the cold water flows, thereby increasing a staying time of the cold water and enhancing a cooling effect.

Further, a plurality of adjacent first water-cooling plates 3141 may be connected in series. When the plurality of first water cooling plates 3141 are connected in series, one of two water pipe joints on the two outermost first water cooling plates 3141 serves as a total first water inlet 3143, the other one serves as a total first water outlet 3144, and the water pipe joints of the remaining first water cooling plates 3141 at the intermediate position are connected in series, so that the cooling liquid enters from the total first water inlet 3143, sequentially passes through each of the adjacent first water cooling plates 3141 participating in the series connection, and finally flows out from the total first water outlet 3144. For example, two adjacent first water-cooling plates 3141 are connected in series, the water pipe joint sequentially comprises a joint a, a joint B, a joint C and a joint D from left to right, the joint a is taken as a total first water inlet 3143, the joint D is taken as a total first water outlet 3144, and the joint B is connected with the joint C through a water pipe, so that the two adjacent first water-cooling plates 3141 are connected in series.

The first illumination device 313 is provided with a first water cooling device 314, and the first water cooling plate 3141 is attached to the first LED substrate 3131 to cool the first LED lamp 3132 and prevent the first LED lamp 3132 from being damaged by heat generated by itself or by heat generated by the first heating device 317.

As shown in fig. 10 and 11, a first heat removal device 315 is optionally installed below the first illumination device 313. The first heat exhausting device 315 includes a first glass plate 3151 and a second glass plate 3152 disposed at an interval up and down below the first illuminating device 313, a first heat exhausting space 3153 is formed between the first illuminating device 313 and the first glass plate 3151, a second heat exhausting space 3154 is formed between the first glass plate 3151 and the second glass plate 3152, and both the first heat exhausting space 3153 and the second heat exhausting space 3154 are communicated with the outside through air holes disposed therein. In the present embodiment, the air holes of the second heat exhausting space 3154 include first air holes 3155.

The first heat exhausting space 3153 and the second heat exhausting space 3154 of the first heat exhausting device 315 exchange air with the outside, so that cold air is continuously injected, and hot air generated by heat generation of the first LED lamp 3132 and the first heating device 317 is exhausted, thereby preventing the first LED substrate 3131 and the first LED lamp 3132 from being damaged due to overheating.

As shown in fig. 10 and 11, optionally, a heat sink 316 is mounted below the first LED substrate 3131, and the heat sink 316 is located below the first heat sink 315 inside the first upper cavity 311 and is disposed at both sides of the battery sheet passing direction. The heat sink 316 includes an air pipe 3161 connected to a compressed air source, and the air pipe 3161 is provided with a plurality of air outlet holes 3162 for discharging compressed air to the first lower cavity 312. The compressed air blows through the dense air outlet holes 3162 into the first lower cavity 312.

The heat sink 316 blows air into the first lower cavity 312 through the air outlet 3162, so as to achieve at least one of the following purposes: 1. the temperature in the cavity is reduced. 2. The temperature in the cavity is uniform. 3. Mixing with residual exhaust gases that may be present facilitates emissions.

The first heating device 317 may be a heating wire, a hot air blower, or an infrared lamp. As shown in fig. 11 and 11, optionally, the first heating device 317 includes a plurality of first infrared light tubes 3171 arranged side by side. The plurality of first infrared light tubes 3171 heat the battery pieces passing through the battery piece first transport space 318.

The first heating device 317 adopts the first infrared lamp 3171, can conveniently control the heating temperature, has a simple structure and low cost, and is easy to install and maintain.

As shown in fig. 7 to 11, optionally, the first photothermal treatment module 31 further includes a first smoke exhaust device 319. An alternative embodiment of first fume extractor 319 includes a first suction fan 3191, a first fume extractor tube 3192, and a first mesh plate 3193. The first mesh plate 3193 is located below the first cell conveying space 318 in the first lower cavity 312, and the first mesh plate 3193 slightly blocks a lower airflow to prevent temperature unevenness caused by nonuniform airflow in the cavity due to adsorption. The first smoke exhaust pipe 3192 is connected between the first lower cavity 312 and the first suction fan 3191, and the first smoke inlet 3194 of the first smoke exhaust pipe 3192 is located below the first mesh plate 3193. First suction fan 3191 draws gas from first lower cavity 312 through first fume tube 3192. The first exhaust fan 3191 is connected to an external pipe to discharge the gas to the outside of the plant.

Through the remaining waste gas discharge of first fume extractor 319 in with the cavity steam and probably exist, the workshop production environment is protected, prevents that waste gas from causing the damage to operating personnel's healthy.

Optionally, a first insulating cotton 3181 is installed at the joint of the first upper cavity 311 and the first lower cavity 312. The first heat preservation cotton 3181 isolates the cavity from the outside, and air circulation inside and outside the cavity is prevented.

Optionally, a first temperature measuring device 3172 is mounted on the first upper cavity 311 and/or the first lower cavity 312. The first temperature measuring device 3172 may be a thermocouple, a thermometer, or the like. In the embodiment, a thermocouple is adopted, and the temperature measuring end of the thermocouple is inserted into the cavity to measure the temperature. An operator can check the temperature in the cavity through the first temperature measuring device 3172 at any time and control the temperature in the cavity within a set range.

Fig. 12 to 16 show an alternative embodiment of the second photothermal treatment module 32, fig. 12 is a perspective view of a plurality of the second photothermal treatment modules 32 after assembly, fig. 13 is a perspective view of a single second photothermal treatment module 32, fig. 14 is a partially enlarged view of fig. 14, fig. 15 is a front view of a single second photothermal treatment module 32, and fig. 16 is a sectional view of a single second photothermal treatment module 32.

As shown in fig. 12 to 16, each of the second photothermal treatment modules 32 mainly includes a second upper chamber 321, a second lower chamber 322, a second illumination device 323, a second heating device 327, and an air cooling device 326. Wherein: the second upper cavity 321 is installed above the second lower cavity 322, and a second transportation space 328 for passing the battery piece is formed between the second upper cavity 321 and the second lower cavity 322. The second illumination device 323 is used for illuminating the battery plates passing through the second transportation space 328; the second heating device 327 is used for heating the battery piece passing through the second transportation space 328; the air-cooling device 326 is configured to blow cool air toward the battery pieces passing through the transportation space.

The second illumination device 323, the second heating device 327 and the air cooling device 326 may be arranged in various manners as follows:

1. a second illuminating device 323 is arranged in the second upper cavity 321, a second illuminating device 323 is arranged in the second lower cavity 322, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

2. a second illumination device 323 is arranged in the second upper cavity 321, a second heating device 327 is arranged in the second lower cavity 322, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

3. a second illuminating device 323 is arranged in the second upper cavity 321, a second illuminating device 323 and a second heating device 327 are arranged in the second lower cavity 322, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

4. a second heating device 327 is arranged in the second upper cavity 321, a second heating device 327 is arranged in the second lower cavity 322, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

5. a second heating device 327 is installed in the second upper cavity 321, a second illuminating device 323 is installed in the second lower cavity 322, and an air cooling device 326 is installed on the second upper cavity 321 or the second lower cavity 322;

6. a second heating device 327 is installed in the second upper cavity 321, a second heating device 327 and a second illumination device 323 are installed in the second lower cavity 322, and an air cooling device 326 is installed on the second upper cavity 321 or the second lower cavity 322;

7. a second illumination device 323 and a second heating device 327 are arranged in the second upper cavity 321, a second illumination device 323 and a second heating device 327 are arranged in the second lower cavity 322, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

8. a second illumination device 323 and a second heating device 327 are arranged in the second upper cavity 321, and an air cooling device 326 is arranged on the second upper cavity 321 or the second lower cavity 322;

9. the second lower chamber 322 is internally provided with a second lighting device 323 and a second heating device 327, and the air cooling device 326 is arranged on the second upper chamber 321 or the second lower chamber 322.

The conventional mounting methods are the 2 nd and 5 th methods.

This embodiment shows the above-mentioned 2 nd installation mode, that is: the second lighting device 323 is installed on the second upper cavity 321, and is located above the second transporting space 328; the second heating device 327 is installed on the second lower cavity 322 and located below the second transporting space 328; an air cooling device 326 is mounted on the upper cavity.

The device 32 for photo-thermal treatment of the cell slice illuminates the cell slice through the second illumination device 323, heats the cell slice through the second heating device 327, and improves the efficiency of the N-type cell slice and the P-type cell slice by using the principle of photo-thermal effect and improves the light decay phenomenon of the P-type cell slice to a certain extent; the forced cooling is carried out on the battery piece through the air cooling device 326, so that the stability of the battery piece can be increased, the efficiency of the battery piece is improved, and the quality of the battery piece is ensured.

The heating device has various options, such as an infrared lamp tube, a resistance wire and the like, and the infrared lamp tube is selected in the embodiment.

As shown in fig. 15 and 16, the second lighting device 323 optionally includes a second LED substrate 3231 and a second LED lamp 3232, and the plurality of second LED lamps 3232 are mounted on the second LED substrate 3231.

The second illumination device 323 illuminates the battery cells with the second LED lamp 3232, that is, the side of the second LED substrate 3231 on which the second LED lamp 3232 is mounted faces the battery cells. The LED lamp is adopted to adjust the light injection intensity, the structure is simple, and the replacement is convenient.

As shown in fig. 15 and 16, a second water cooling device 324 is optionally installed on the second light irradiation device 323. One embodiment of the second water cooling device 324 includes a second water cooling plate 3241, a second water cooling channel 3242, a second water inlet 3243 and a second water outlet 3244. There are many choices for the cooling liquid, and in consideration of the difficulty and cost of obtaining, this embodiment chooses to use water as the cooling liquid. The second water-cooling channel 3242 is disposed in the second water-cooling plate 3241, the second water-cooling plate 3241 is provided with a second water inlet 3243 and a second water outlet 3244, two ends of the second water-cooling channel 3242 are respectively communicated with the second water inlet 3243 and the second water outlet 3244, the second LED substrate 3231 is mounted on the second water-cooling plate 3241, and the second water-cooling plate 3241 and one surface of the second LED substrate 3231 on which the second LED lamp 3232 is not mounted are attached to each other. Cold water enters the second water-cooled plate 3241 from the second water inlet port 3243, passes through the second water-cooled channel 3242 inside the second water-cooled plate 3241, and is discharged from the second water outlet port 3244. Alternatively, the second water-cooled plate 3241 may be provided in plural, and the second water-cooled passage 3242 in each second water-cooled plate 3241 may be provided in a shape such as an S-shape, a zigzag shape, a spiral shape, or the like, which increases the path length of water as much as possible. The S-shaped second water cooling channel 3242 of this embodiment can increase the contact area with the cold water, and increase the length of the path through which the cold water flows, thereby increasing the residence time of the cold water and improving the cooling effect.

Further, a plurality of adjacent second water-cooled plates 3241 may be connected in series. When the plurality of second water-cooling plates 3241 are connected in series, one of two water pipe connectors on the two outermost second water-cooling plates 3241 serves as a total second water inlet port 3243, the other one serves as a total second water outlet port 3244, and the water pipe connectors of the remaining second water-cooling plates 3241 at the intermediate position are connected in series, so that the cooling liquid enters from the total second water inlet port 3243, sequentially passes through each of the adjacent second water-cooling plates 3241 participating in the series connection, and finally flows out from the total second water outlet port 3244. For example, two adjacent second water-cooling plates 3241 are connected in series, the water pipe joints include a joint a, a joint B, a joint C, and a joint D from left to right, the joint a is taken as a total second water inlet 3243, the joint D is taken as a total second water outlet 3244, and the joint B is connected with the joint C through a water pipe, so that the two adjacent second water-cooling plates 3241 are connected in series.

The second illumination device 323 is provided with a second water cooling device 324, and the second water cooling plate 3241 is attached to the second LED substrate 3231, so that the second LED lamp 3232 can be cooled, and the second LED lamp 3232 is prevented from being broken down by heat generated by itself or heat generated by the second heating device 327.

As shown in fig. 15 and 16, a second heat removal device 325 is optionally installed below the second lighting device 323. The second heat exhausting device 325 includes a third glass plate 3251 and a fourth glass plate 3252 which are disposed below the second lighting device 323 at an interval from top to bottom, a third heat exhausting space 3253 is formed between the second lighting device 323 and the third glass plate 3251, a fourth heat exhausting space 3254 is formed between the third glass plate 3251 and the fourth glass plate 3252, and the third heat exhausting space 3253 and the fourth heat exhausting space 3254 are both communicated with the outside through air holes preset in the third heat exhausting space 3253 and the fourth heat exhausting space 3254. In this embodiment, the air holes in the fourth heat exhausting space 3254 include a second air hole 3255

The third heat exhausting space 3253 and the fourth heat exhausting space 3254 of the second heat exhausting device 325 exchange air with the outside, thereby exhausting hot air generated by heat generation of the second LED lamp 3232 and the second heating device 327, and preventing the second LED substrate 3231 and the second LED lamp 3232 from being damaged due to overheating.

The second heating device 327 can be a heating wire, a hot air blower, or an infrared lamp. As shown in fig. 15 and 16, the second heating device 327 optionally includes a plurality of second infrared light tubes 3271 arranged side by side. The plurality of second infrared lamp tubes 3271 heats the battery pieces passing through the battery piece second transport space 328.

The second heating device 327 adopts a second infrared lamp tube 3271, which can conveniently adjust the temperature, and has simple structure, low cost and easy installation and maintenance.

As shown in fig. 15 and 16, an embodiment of the air cooling device 326 includes a first fan 3261, a water-cooled row 3262 and two air guiding grooves 3263, the two air guiding grooves 3263 are respectively installed at two sides of the bottom of the second upper cavity 321, the water-cooled row 3262 is installed on each air guiding groove 3263, the first fan 3261 is installed on the water-cooled row 3262, and a plurality of air blowing holes 3264 facing the second transportation space 328 are opened on each air guiding groove 3263; the air blown by the first fan 3261 is cooled by the water cooling row 3262, enters the air guiding groove 3263, and is blown from the air blowing hole 3264 to the battery cells passing through the second transport space 328.

The air cooling device 326 combines the first fan 3261 with the water cooling bank 3262 to increase the cooling effect.

One embodiment of water cooled bank 3262 includes a water cooled cavity with a plurality of air channels disposed thereon, an air channel, an inlet 3265 and an outlet 3266, the water cooled cavity in communication with inlet 3265 and outlet 3266, respectively.

By providing the air passage in the water-cooled row 3262, the air passing through the air passage is cooled by the cold water flowing through the water-cooled cavity of the water-cooled row 3262, and the cooling effect of the air-cooling device 326 is increased.

As shown in fig. 12-16, the second photothermal treatment module 32 may optionally further include a second fume extractor 329. An alternative embodiment of second fume extractor 329 comprises a second suction fan 3291, a second fume exhaust tube 3292 and a second mesh plate 3293. The second mesh plate 3293 is located below the second cell transportation space 328 in the second lower cavity 322, and the second mesh plate 3293 slightly blocks a lower airflow to prevent temperature unevenness in the cavity due to nonuniform airflow in the cavity caused by adsorption. A second smoke discharge pipe 3292 is connected between the second lower cavity 322 and the second suction fan 3291, and a second smoke inlet 3294 of the second smoke discharge pipe 3292 is located below the second mesh plate 3293. The second exhaust fan 3291 exhausts the gas in the second lower cavity 322 through a second exhaust pipe 3292. Second suction fan 3291 may also be connected to an external pipe to discharge the gas outside the plant.

Through second fume extractor 329 with the steam in the cavity and possible remaining waste gas discharge, reduce the temperature, protect workshop production environment simultaneously, prevent to harm operating personnel's healthy.

Optionally, a second insulating cotton 3281 is installed at the joint of the second upper cavity 321 and the second lower cavity 322. The cavity is isolated from the outside through the second heat preservation cotton 3281, and the circulation of air inside and outside the cavity is prevented.

Optionally, a second temperature measuring device 3272 is mounted on the second upper cavity 321 and/or the second lower cavity 322. The second temperature measuring device 3272 can be a thermocouple, a thermometer, or the like. In the embodiment, a thermocouple is adopted, and the temperature measuring end of the thermocouple is inserted into the cavity to measure the temperature. An operator can check the temperature in the cavity through the second temperature measuring device 3272 at any time, and adjust and control the temperature in the cavity within a set range.

As shown in fig. 1, the annealing zone 40 is located at a subsequent station of the photothermal treatment zone 30. The annealing region 40 is used for annealing the cell sheet subjected to the photo-thermal treatment, so that the condition of photo-induced degradation is reduced.

An alternative embodiment of the anneal station 40 is shown in fig. 17, and fig. 17 is a perspective view of the component.

As shown in fig. 17, the annealing zone 40 includes a heating section 41, a heating and lighting section 42 and a cooling section 43 which are sequentially connected along the passing direction of the battery piece; the heating module 411 is configured to heat the passing battery piece; the heating illumination section 42 is configured to illuminate and heat the passing battery plate; the cooling section 43 is configured to cool the passing battery cell.

The annealing zone 40 sequentially processes the battery piece through the heating section 41, the heating illumination section 42 and the cooling section 43, so that the annealing quality of the battery piece can be ensured.

As shown in fig. 18 and 19, the heating section 41 includes a plurality of heating modules 411, and air holes are formed at both sides of each heating module 411 for injecting compressed air.

Each heating module 411 includes an upper heating cavity 412 and a lower heating cavity 413, and a transportation space for the battery piece to pass through is formed between the upper heating cavity 412 and the lower heating cavity 413. The joint of the upper heating cavity 412 and the lower heating cavity 413 is provided with heat insulation cotton for heat insulation. A plurality of third infrared lamp tubes 414 are arranged on the upper heating cavity 412 and/or the lower heating cavity 413 side by side for performing heating treatment on the battery pieces. A fourth thermocouple 415 is further mounted on the upper heating chamber 412 and/or the lower heating chamber 413 for measuring the temperature within the chamber.

As shown in fig. 20 to 22, the heating and illuminating section 42 includes a plurality of heating and illuminating modules 421. Each heating and illuminating module 421 includes an upper heating and illuminating cavity 422 and a lower heating and illuminating cavity 423, and a transportation space for the battery plate to pass through is formed between the upper heating and illuminating cavity 422 and the lower heating and illuminating cavity 423. The joint of the upper heating illumination cavity 422 and the lower heating illumination cavity 423 is provided with heat preservation cotton for heat preservation.

The upper heating and illuminating cavity 422 is internally provided with a water cooling plate 424, an LED substrate 425 and glass 426 from top to bottom, and the lower heating and illuminating cavity 423 is internally provided with a plurality of fourth infrared lamps 427 which are arranged side by side. The water-cooling plate 424, the LED substrate 425, and the glass 426 have structures similar to those of the components of the photothermal treatment zone 30 having the same functions.

Optionally, a gap is reserved between two adjacent LED substrates 425 to mount an infrared lamp tube for heating.

A lamp housing 428 is installed outside each of the fourth infrared lamp tubes 427, and the lamp housing 428 is used for uniform heating of the fourth infrared lamp tubes 427.

Two pipelines are arranged on two sides of the heating and illuminating section 42, one pipeline is a water inlet pipeline 4241, and the other pipeline is a water outlet pipeline 4242. The two pipelines are divided into a plurality of small pipelines to be connected with each water cooling plate 424, cold water enters the water inlet pipeline 4241, then enters each water cooling plate 424 to flow, and finally flows to the water outlet pipeline 4242.

As shown in fig. 23 and 24, the cooling section 43 includes an upper cooling cavity 431 and a lower cooling cavity 432, and a transportation space for the battery plate to pass through is formed between the upper cooling cavity 431 and the lower cooling cavity 432.

A plurality of second fans 433 are installed on the upper cooling cavity 431, and a plurality of vent holes 434 are provided on the upper cooling cavity 431. The second fan 433 directly blows towards the battery piece through the vent 434, so as to achieve the purpose of cooling.

As shown in fig. 1, optionally, the sintering and annealing integrated furnace 1 further includes an upper chamber lifting mechanism 50, and at least one upper chamber lifting mechanism 50 is installed in each of the drying zone 10, the sintering zone 20, the photothermal treatment zone 30 and the annealing zone 40. The upper cavity lifting mechanism 50 includes a bracket 51 and a driving device 52, the bracket 51 is located above the upper cavity of each section, the bracket 51 is connected with the upper cavity of each section, the driving device 52 is installed on the bracket 51, and the bracket 51 drives the upper cavity to lift. The driving means 52 may be plural, and in the present embodiment, the drying zone 10, the sintering zone 20, the first and second photothermal treatment modules 31 and 32, and the heating section 41 and the heating and light irradiation section 42 of the annealing zone 40 are respectively provided with 1 driving means 52. All the upper cavities of any section can be simultaneously lifted by the upper cavity lifting mechanism 50, so that the upper cavities are separated from the lower cavities, and the section is convenient for operators to overhaul.

The invention has been described above with a certain degree of particularity and detail. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that may be made without departing from the true spirit and scope of the present invention are intended to be within the scope of the present invention. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.

Claims (10)

1. The sintering and annealing integrated furnace is characterized by comprising a sintering area, a photo-thermal treatment area and an annealing area which are sequentially connected; the battery piece that awaits processing pass through in proper order the sintering district, light and heat treatment district and annealing district, wherein:

the sintering area is configured to perform sintering treatment on the passing battery piece;

the photothermal treatment area is configured to perform illumination and heating treatment on the battery piece after sintering treatment;

the annealing area is configured to anneal the battery piece after the illumination and heating treatment.

2. The sintering and annealing integrated furnace of claim 1, wherein the photothermal treatment zone comprises at least one first photothermal treatment module, and/or at least one second photothermal treatment module;

the first photo-thermal treatment module comprises a first upper cavity, a first lower cavity, a first illumination device, a first heating device and a heat dissipation device; wherein:

the first upper cavity is arranged above the first lower cavity, and a first transportation space for battery pieces to pass through is formed between the first upper cavity and the first lower cavity;

the first illumination device is arranged on the first upper cavity and is positioned above the first transportation space, and the first illumination device is used for illuminating the battery plates passing through the first transportation space;

the first heating device is arranged on the first lower cavity and is positioned below the first transportation space, and the first heating device is used for heating the battery slices passing through the first transportation space;

the heat dissipation device is arranged on the first upper cavity and is configured to blow compressed air to the battery piece passing through the first transportation space;

the second photo-thermal treatment module comprises a second upper cavity, a second lower cavity, a second illumination device, a second heating device and an air cooling device; wherein:

the second upper cavity is arranged above the second lower cavity, and a second transportation space for battery pieces to pass through is formed between the second upper cavity and the second lower cavity;

the second illumination device is arranged on the second upper cavity and is positioned above the second transportation space, and the second illumination device is used for illuminating the battery plates passing through the second transportation space;

the second heating device is arranged on the second lower cavity and is positioned below the second transportation space, and the second heating device is used for heating the battery slices passing through the second transportation space;

the air cooling device is installed on the second upper cavity and is configured to blow cold air to the battery pieces passing through the second transportation space.

3. The sintering and annealing integrated furnace according to claim 2, wherein the first or second illumination device comprises an LED substrate and LED lamps, respectively, and a plurality of the LED lamps are mounted on the LED substrate;

the LED substrate is provided with a water cooling device, the water cooling device comprises a water cooling plate, a water cooling channel, a water inlet and a water outlet, the water cooling channel is arranged in the water cooling plate, and two ends of the water cooling channel are respectively communicated with the water inlet and the water outlet;

the heat extraction device is installed to the below of LED base plate, the heat extraction device is including being located first glass board and the second glass board that the upper and lower interval of illumination device below set up, the illumination device with form first heat extraction space between the first glass board, first glass board with form second heat extraction space between the second glass board, first heat extraction space with second heat extraction space all communicates with each other through gas pocket and external.

4. The sintering and annealing integrated furnace according to claim 2, wherein the heat sink comprises an air pipe connected to a compressed air source, and the air pipe is provided with a plurality of air outlets for discharging compressed air to the lower cavity.

5. The sintering and annealing integrated furnace according to claim 2, wherein the air cooling device comprises a fan, a water cooling bar and air guide grooves, the two air guide grooves are respectively installed on two sides of the bottom of the second upper cavity, the water cooling bar is installed on each air guide groove, the fan is installed on each water cooling bar, and a plurality of air holes facing the second transportation space are formed in each air guide groove; the air blown out by the fan enters the air guide groove after being cooled by the water cooling exhaust, and then is blown to the battery piece passing through the second transportation space from the air hole;

the water-cooling row comprises a water-cooling cavity, air channels, a water inlet and a water outlet, wherein the air channels are arranged on the water-cooling cavity, and the water-cooling cavity is communicated with the water inlet and the water outlet respectively.

6. The sintering and annealing integrated furnace according to claim 2, wherein the first photothermal treatment module or the second photothermal treatment module further comprises a smoke exhaust device, the smoke exhaust device comprises an exhaust fan, a smoke exhaust pipe and a mesh plate, the mesh plate is located in the first lower cavity below the first heating device, or the mesh plate is located in the second lower cavity below the second heating device, the smoke exhaust pipe is connected between the first lower cavity and the exhaust fan, or the smoke exhaust pipe is connected between the second lower cavity and the exhaust fan, and a smoke inlet of the smoke exhaust pipe is located below the mesh plate; and the exhaust fan extracts the gas in the first lower cavity or the second lower cavity through the smoke exhaust pipe.

7. The sintering and annealing integrated furnace according to claim 2, wherein the first photothermal treatment module or the second photothermal treatment module further comprises an upper chamber body elevating mechanism, the upper chambers of the photothermal treatment modules are connected, the upper chamber body elevating mechanism comprises a support and a driving device, the support is connected with the upper chamber body, and the driving device drives the upper chamber body to ascend and descend through the support.

8. The sintering and annealing integrated furnace according to claim 1, wherein the sintering zone comprises a plurality of sintering modules, and an exhaust device and a wind curtain component which are arranged at two ends of the plurality of sintering modules;

the sintering module is configured to sinter the passing battery piece;

the exhaust device is configured to exhaust the exhaust gas generated by the sintering module;

the air curtain assembly is configured to block the circulation of exhaust gas generated by the sintering module to the front station and the rear station.

9. The sintering and annealing integrated furnace according to claim 1, wherein the annealing zone comprises a heating section, a heating and lighting section and a cooling section which are sequentially connected along the passing direction of the battery piece;

the heating section comprises a plurality of heating modules, and the heating modules are configured to heat the passing battery piece;

the heating illumination section is configured to illuminate and heat the passing battery plate;

the cooling section is configured to cool the battery piece passing through.

10. The sintering and annealing integrated furnace according to claim 1, further comprising a drying zone located at a previous station of the sintering zone; the drying area comprises at least one drying module and a combustion tower connected to an outlet of the drying module;

the drying module is configured to dry the passing battery piece;

the combustion tower is configured to treat exhaust gas generated by the drying module.

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