CN215909652U

CN215909652U - Heating furnace

Info

Publication number: CN215909652U
Application number: CN202120274732.5U
Authority: CN
Inventors: 李文; 郭健; 徐英乾; 高阳; 郑伟伟; 李涛
Original assignee: Wuxi Aote Weixurui Technology Co ltd
Current assignee: Wuxi Aote Weixurui Technology Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-02-25
Anticipated expiration: 2031-01-29

Abstract

The utility model relates to a heating furnace, which comprises an upper cavity and a lower cavity, wherein: the upper cavity is arranged above the lower cavity, at least two heating channels for the battery pieces to pass through are formed between the upper cavity and the lower cavity, and the at least two battery pieces which are arranged side by side respectively pass through different heating channels; heating devices are arranged on the front one or both of the lower cavity and the upper cavity and are used for heating the battery piece passing through the heating channel. Through set up two at least heating passageways in the furnace body, can carry out heat treatment to the battery piece in two at least heating passageways simultaneously, can improve the production efficiency of heating furnace.

Description

Heating furnace

Technical Field

The utility model relates to solar cell production equipment, in particular to a heating furnace.

Background

In the production process of the solar cell, the cell needs to be subjected to multiple heating treatments including drying, sintering, annealing and other processes. These heat treatments all require the use of a furnace.

The traditional heating furnace body is only provided with one heating channel, the battery pieces pass through the heating channel to complete corresponding process treatment, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heating furnace with high efficiency, aiming at the problem of low efficiency of the existing heating furnace.

The technical scheme of the heating furnace is as follows: a heating furnace comprises an upper cavity and a lower cavity, wherein: the upper cavity is arranged above the lower cavity, at least two heating channels for the battery pieces to pass through are formed between the upper cavity and the lower cavity, and the at least two battery pieces which are arranged side by side respectively pass through different heating channels; heating devices are arranged on the front one or both of the lower cavity and the upper cavity and are used for heating the battery piece passing through the heating channel.

Through set up two at least heating passageways in the furnace body, can carry out heat treatment to the battery piece in two at least heating passageways simultaneously, can improve the production efficiency of heating furnace.

Further, the lower surface of the upper cavity is provided with an upper baffle protruding towards the lower cavity, the upper surface of the lower cavity is provided with a lower baffle protruding towards the upper cavity, the upper baffle and the lower baffle are arranged in pairs from top to bottom and are all arranged along the conveying direction of the battery pieces, and the paired upper baffle and the paired lower baffle form a heating channel at the space interval between the upper cavity and the lower cavity.

The heating channel is formed by separating the upper partition plate and the lower partition plate, the structure is simple, the manufacture and the installation are convenient, the heat circulation of the adjacent heating channels is reduced, and each heating channel can have different temperatures.

Furthermore, the heating furnace also comprises a battery piece conveying device, and a conveying part of the battery piece conveying device conveys the battery pieces in the heating channel.

The battery piece is conveyed into the heating channel through the battery piece conveying device, so that the battery piece is conveniently and efficiently heated.

Further, the cell conveying device comprises a conveying part, a side support and a middle support, wherein the conveying part is a steel mesh belt; the steel mesh belt is one and is laid in all the heating channels in a crossing manner; the two groups of side supports are symmetrically arranged on two opposite side edges of the steel mesh belt; the middle supports are at least one group, the middle supports correspond to the paired upper partition plates and the paired lower partition plates one by one, and each group of middle supports are arranged on the area of the steel mesh belt between the corresponding group of upper partition plates and the corresponding group of lower partition plates; and a bearing part for bearing the battery piece is formed between a group of side supports and a group of middle supports in the same heating channel, or a bearing part for bearing the battery piece is formed between two groups of middle supports in the same heating channel.

The battery piece conveying device adopts the structure of the mesh belt, the side supports and the middle support, has a simple structure, is convenient to manufacture and drive, and can bear battery pieces with different sizes.

Furthermore, the bearing part in each heating channel comprises two supporting point positions on the same horizontal height to form a supporting cooperation part for bearing the battery piece, at least two supporting cooperation parts are formed in each heating channel, and the distance between the two supporting point positions of each supporting cooperation part increases progressively from bottom to top.

Through setting up a plurality of support cooperation portions, correspond the battery piece that bears different specifications, make battery piece conveyor have the compatibility to the cost has been practiced thrift.

Furthermore, two adjacent heating channels share one group of middle supports, and the middle supports are of a structure with a high middle part and two ends extending downwards to the steel mesh belts in the two adjacent heating channels respectively; or, a group of middle brackets are respectively used at the adjacent positions of two adjacent heating channels, and the middle brackets extend from high to low to the corresponding steel mesh belts in the heating channels.

Two adjacent heating passages share the middle support, so that materials can be saved, and the cost is reduced.

Furthermore, a heating device is arranged in the lower cavity, an air cooling device and/or an illumination device is arranged in the upper cavity, the air cooling device cools the temperature in the heating channel, and the illumination device provides illumination for the battery plates conveyed in the heating channel.

Through set up air cooling device and/or illumination device in the heating furnace, can carry out the illumination to the battery piece in the heating furnace to guarantee that illumination device can not produce the trouble because of overheated, improve production efficiency.

Furthermore, the heating device comprises a group of a plurality of light tubes which are arranged at intervals and are vertical to the heating channels, and each light tube penetrates through all the heating channels.

The heating device adopts an infrared lamp tube, and has the advantages of simple structure, low cost and convenient installation.

Furthermore, heating filaments are arranged in the lamp tube sections of each lamp tube corresponding to one of the heating channels, and the heating filaments in the lamp tubes are arranged in a staggered mode.

Each lamp tube is only provided with a heating filament in one heating channel, so that the cost of the filament can be saved; the heating filaments in each lamp tube are arranged in a staggered mode, and the temperature of one or more preset heating channels can be controlled respectively.

Furthermore, when the heating devices are arranged in the upper cavity and the lower cavity, the positions of the lamp tubes and the lamp filaments arranged in the upper cavity and the lower cavity correspond to each other.

The lamp tubes and the lamp filaments which are arranged in the upper cavity and the lower cavity in corresponding positions can heat two sides of the battery piece at the same time, and the heating efficiency is high.

Drawings

FIG. 1 is a schematic perspective view of a heating furnace according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the embodiment of the heating furnace shown in fig. 1 with the battery plate conveying device removed.

FIG. 3 is a cross-sectional view of an embodiment of the furnace shown in FIG. 2.

Fig. 4 is a cross-sectional view of an embodiment of an upper chamber body in the furnace of the present invention.

FIG. 5 is a cross-sectional view of an embodiment of a lower chamber body in the furnace of the present invention.

Fig. 6 is a schematic perspective view of a cell conveying device in the embodiment of the heating furnace shown in fig. 1.

Fig. 7 is a schematic perspective view of the battery piece conveying device shown in fig. 6 with the battery piece removed.

Fig. 8 is a front view of the battery sheet conveying apparatus shown in fig. 6.

Fig. 9 is a schematic view of the battery piece conveying device shown in fig. 8 with the battery piece removed.

Fig. 1 to 9 each include a heating furnace 1, an upper chamber 10, an upper partition 11, a lower chamber 20, a lower partition 21, an air hole 22, a heating passage 30, a heating device 40, a lamp 41, a heating filament 42, a cell sheet transfer device 50, a transfer portion 51, a side support 52, a middle support 53, a support portion 54, a support cooperation portion 55, a thermocouple 60, a lighting device 70, a water cooling device 80, and a cell sheet 100.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The present invention is a heating furnace 1 for heating a battery piece 100.

It is noted that solar cells may have a number of different names, such as photovoltaic cells, silicon wafers, substrates, etc., during different process stages or as a convention called within the industry. For convenience of description, the term "battery plate" is taken for the scheme description.

Fig. 1 and 2 show an alternative embodiment of a heating furnace 1, fig. 1 being a perspective view of the device and fig. 2 being a perspective view of the device from another perspective.

The heating furnace 1 mainly includes an upper chamber 10 and a lower chamber 20. Wherein: the upper chamber 10 is installed above the lower chamber 20, and at least two heating channels 30, in the embodiment shown in the drawings, two heating channels 30 are formed between the upper chamber 10 and the lower chamber 20 for the battery piece 100 to pass through. At least two battery pieces 100 arranged side by side respectively pass through the heating furnace 1 from different heating channels 30; of the lower chamber 20 and the upper chamber 10, only the lower chamber 20 is provided with the heating device 40 or both the lower chamber 20 and the upper chamber 10 are provided with the heating device 40, and the heating device 40 is used for heating the battery piece 100 passing through the heating channel 30.

By arranging at least two heating channels 30 in the furnace body, the battery pieces 100 in the at least two heating channels 30 can be heated at the same time, and the production efficiency of the heating furnace 1 can be improved.

The upper chamber 10 is connected with a suspension mechanism (not shown in the figure) above the upper chamber, and can be lifted, so that the maintenance of workers is facilitated. The joint of the upper cavity and the lower cavity is provided with the heat insulation material, so that when the upper cavity and the lower cavity are closed, gas and heat cannot be leaked.

Two thermocouples 60 are installed on the upper chamber 10. Two thermocouples 60 are respectively inserted into the two heating passages 30 to measure the temperatures of the two heating passages 30.

Optionally, the inner side wall of the furnace body and the bottom of the furnace body are provided with air holes 22, so that cold air can be injected into the furnace body and hot air can be pumped out, and the temperature in the furnace body can be reduced.

The manner in which the heating channel 30 is formed may be varied. Alternatively, it is formed by means of a spacer. As shown in fig. 3, an upper partition plate 11 protruding toward the lower cavity 20 is disposed on the lower surface of the upper cavity 10, a lower partition plate 21 protruding toward the upper cavity 10 is disposed on the upper surface of the lower cavity 20, the upper partition plate 11 and the lower partition plate 21 are disposed in pairs up and down and are arranged along the conveying direction of the battery piece 100, and the paired upper partition plate 11 and lower partition plate 21 form a heating channel 30 by spacing a space between the upper cavity 10 and the lower cavity 20.

The heating channel 30 is formed by separating the upper partition plate 11 and the lower partition plate 21, and has simple structure and convenient manufacture and installation.

The heating device 40 is disposed at least in the lower chamber 20, and may be disposed in both the lower chamber 20 and the upper chamber 10.

Optionally, a heating device 40 is disposed in the lower cavity 20, and an air cooling device and/or a lighting device 70 with a water cooling device is disposed in the upper cavity 10. The air cooling device and/or the water cooling device are used for cooling the lighting device 70 or cooling the heating channel 30, and the lighting device 70 provides light for the battery plates 100 conveyed in the heating channel 30. As shown in fig. 4, there is an embodiment of an upper chamber 10, in which a light irradiation device 70 is disposed in the upper chamber 10, and a water cooling device 80 is disposed above the light irradiation device 70. The illumination device 70 is an LED lamp panel, and the water cooling device 80 is a water cooling plate, optionally, the water cooling plate is attached to the back of the LED lamp panel. The water cooling plate is internally provided with a bow-shaped water flow channel, and the water cooling plate is also provided with a water inlet and a water outlet which are respectively communicated with the starting point and the end point of the water flow channel. Cold water flows through the water cooling plate in a bow shape, so that the temperature of the LED lamp panel is reduced.

By arranging the air cooling device and/or the illumination device 70 with the water cooling device in the heating furnace 1, the battery pieces 100 can be correspondingly processed in the heating furnace 1, and the production efficiency is improved.

As shown in fig. 5, the heating device 40 optionally includes a plurality of light tubes 41 arranged at intervals and perpendicular to the extending direction of the heating channels 30, and each light tube 41 penetrates through all the heating channels 30. The lamp tube 41 is typically an infrared lamp tube.

The heating device 40 adopts the lamp 41, and has simple structure and low cost.

Alternatively, each lamp tube 41 is provided with a heating filament 42 in the section of the lamp tube 41 corresponding to one of the heating channels 30, and the heating filament 42 is not provided in the other heating channels 30. The heating filaments 42 in the respective lamp tubes 41 are arranged alternately.

Each lamp tube 41 is provided with the heating filament 42 in only one heating channel 30, so that the cost of the filament can be saved; the heating filaments 42 in the respective lamps 41 are arranged alternately, and the heating temperature of one or more predetermined heating channels 30 can be controlled individually.

Taking the lower cavity 20 with two heating channels 30 as shown in fig. 5 as an example, the lamps 41 are respectively marked as 1-6 from top to bottom, wherein the 1 st, 3 rd and 5 th lamps 41 are installed with filaments only in the right heating channel 30, and the 2 nd, 4 th and 6 th lamps 41 are installed with filaments in the left heating channel 30.

When the temperature of the right heating channel 30 needs to be raised, the 1 st, 3 rd and 5 th lamp tubes 41 are started; when it is desired to raise the temperature of the left heating tunnel 30, the 2 nd, 4 th, and 6 th lamps 41 are activated.

Optionally, when the heating devices 40 are disposed in both the upper cavity 10 and the lower cavity 20, the upper cavity 10 and the lower cavity 20 have the same filament arrangement corresponding to the lamp 41.

The lamp 41 and the filament are disposed in the upper cavity 10 and the lower cavity 20 at corresponding positions, so that both sides of the battery piece 100 can be heated at the same time, and the heating efficiency is high.

As shown in fig. 1, optionally, the heating furnace 1 further includes a battery piece conveying device 50, and the conveying part 51 of the battery piece conveying device 50 conveys the battery pieces 100 in the heating passage 30.

The battery piece 100 is conveyed into the heating channel 30 through the battery piece conveying device 50, and the heating channel is convenient and efficient.

As shown in fig. 6 to 9, optionally, the cell conveying device 50 includes a conveying portion 51, a side bracket 52 and a middle bracket 53, wherein the conveying portion 51 is a steel mesh belt; the steel mesh belt is one and is laid in all the heating channels 30 in a crossing manner; the two groups of side supports 52 are symmetrically arranged on two opposite sides of the steel mesh belt; the middle brackets 53 are at least one group, the middle brackets 53 correspond to the paired upper partition plates 11 and lower partition plates 21 one by one, and each group of middle brackets 53 is arranged on the area of the steel mesh belt between the corresponding group of upper partition plates 11 and lower partition plates 21; the bearing part 54 for bearing the battery piece 100 is formed between one group of the side supports 52 and one group of the middle supports 53 in the same heating channel 30, or the bearing part 54 for bearing the battery piece 100 is formed between two groups of the middle supports 53 in the same heating channel 30.

The cell conveying device 50 adopts a mesh belt, side supports 52 and a middle support 53, has a simple structure, is easy to manufacture, and can bear more cells 100 with the same length compared with the traditional steel mesh belt.

Optionally, the bearing part 54 in each heating channel 30 includes two supporting point locations on the same horizontal level to form a supporting cooperative part 55 for bearing the battery piece 100, at least two supporting cooperative parts 55 are formed in each heating channel 30, and the distance between the two supporting point locations of each supporting cooperative part 55 increases from bottom to top.

By arranging the supporting cooperation parts 55 to correspondingly bear the battery pieces 100 with different specifications, the battery piece conveying device 50 has compatibility, and thus the cost is saved.

Optionally, two adjacent heating channels 30 share a group of middle supports 53, and each middle support 53 has a high middle part and two ends extending downward to the steel mesh belt in two adjacent heating channels 30; alternatively, a set of intermediate supports 53 is used at the adjacent positions of two adjacent heating channels 30, and the intermediate supports 53 extend from high to low to the steel mesh belt in the corresponding heating channel 30.

Two adjacent heating channels 30 share the middle support 53, so that materials can be saved, and the cost is reduced.

As shown in fig. 1, when the cell conveying device 50 is installed in the cavity of the heating furnace 1, the lowest point of the upper partition plate 11 is close to the highest point of the middle bracket 53, and the highest point of the lower partition plate 21 is close to, but not in contact with, the steel mesh belt. The heating furnace 1 is also provided with a plurality of glass guide rods parallel to the conveying direction, and the glass guide rods provide support for the steel mesh belt, so that the steel mesh belt is prevented from sagging due to gravity, and the steel mesh belt or the battery piece is prevented from being damaged.

During production and processing, a plurality of heating furnaces 1 are connected in sequence, and a combustion tower is additionally arranged at one end of each heating furnace for collecting, carrying out thermal reaction and discharging waste gas. Optionally, the combustion tower is connected to an external waste line.

The utility model has been described above with a certain degree of particularity. 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 come within the true spirit and scope of the utility model are desired to be protected. The scope of the utility model is defined by the appended claims rather than by the foregoing description of the embodiments.

Claims

1. The heating furnace is characterized by comprising an upper cavity and a lower cavity, wherein:

the upper cavity is arranged above the lower cavity, at least two heating channels for the battery pieces to pass through are formed between the upper cavity and the lower cavity, and the at least two battery pieces which are arranged side by side respectively pass through different heating channels;

heating devices are installed on the lower cavity or the upper cavity or both of the lower cavity and the upper cavity, and the heating devices are used for heating the battery piece passing through the heating channel.

2. The heating furnace according to claim 1, wherein an upper partition plate protruding toward the lower chamber is provided on a lower surface of the upper chamber, a lower partition plate protruding toward the upper chamber is provided on an upper surface of the lower chamber, the upper partition plate and the lower partition plate are arranged in pairs up and down and are arranged along the cell conveying direction, and the paired upper partition plate and lower partition plate separate a space between the upper chamber and the lower chamber to form the heating passage.

3. The heating furnace according to claim 1, further comprising a cell conveying device, wherein a conveying portion of the cell conveying device conveys the cell in the heating tunnel.

4. The heating furnace according to claim 3, wherein the cell conveying device comprises the conveying part, a side support and a middle support, and the conveying part is a steel mesh belt;

the steel mesh belt is one and is laid in all the heating channels in a crossing manner;

the two groups of side supports are symmetrically arranged on two opposite side edges of the steel mesh belt;

the middle supports are at least one group, the middle supports correspond to the upper partition plates and the lower partition plates in pairs one by one, and each group of middle supports are arranged on the area of the steel mesh belt between the corresponding group of upper partition plates and the corresponding lower partition plates;

and a bearing part for bearing the battery piece is formed between a group of side supports and a group of middle supports in the same heating channel, or a bearing part for bearing the battery piece is formed between two groups of middle supports in the same heating channel.

5. The heating furnace according to claim 4, wherein the supporting portion in each heating channel includes two supporting points at the same level to form a supporting cooperating portion for supporting the battery piece, at least two supporting cooperating portions are formed in each heating channel, and the distance between the two supporting points of each supporting cooperating portion increases from bottom to top.

6. The heating furnace according to claim 4,

two adjacent heating channels share one group of middle supports, and the middle supports are of a structure with a high middle part and two ends extending downwards to the steel mesh belts in the two adjacent heating channels respectively; alternatively, the first and second electrodes may be,

and a group of middle brackets are respectively used at the adjacent positions of the two adjacent heating channels, and the middle brackets extend from high to low to the corresponding steel mesh belts in the heating channels.

7. The heating furnace according to claim 1, wherein the heating device is arranged in the lower cavity, and a wind cooling device and/or a lighting device is arranged in the upper cavity, the wind cooling device cools the temperature in the heating channel, and the lighting device provides lighting for the battery plates conveyed in the heating channel.

8. The heater according to any one of claims 1 to 7, wherein said heating means comprises a plurality of spaced apart lamps perpendicular to said heating channels, each of said lamps extending through all of said heating channels.

9. The heater according to claim 8, wherein each of said lamps has a heating filament mounted in a section of said lamp tube corresponding to one of said heating paths, and said heating filaments in said lamp tubes are arranged in a staggered pattern.

10. The heating furnace according to claim 8, wherein when the heating devices are disposed in the upper chamber and the lower chamber, the upper chamber corresponds to a position of a lamp tube and a filament disposed in the lower chamber.