Sintering furnace

Abstract

The embodiment of the utility model provides a sintering furnace which comprises a sintering furnace body, a sintering furnace cavity and a cooling furnace cavity are formed in the sintering furnace body, the sintering furnace cavity is provided with a feeding end and a discharging end which are oppositely arranged, and the cooling furnace cavity is arranged close to the discharging end; the first conveying mechanism is located in the sintering furnace cavity, the first conveying mechanism reciprocates between the feeding end and the discharging end so that the battery pieces can be conveyed to the discharging end from the feeding end to be discharged, and the battery pieces are conveyed back to the feeding end after discharging is completed; the reciprocating motion of the first conveying mechanism conveying the battery pieces and returning the battery pieces to the feeding end is located in the sintering furnace cavity. And the second transmission mechanism is located in the cooling furnace chamber, and the second transmission mechanism is used for transmitting the sintered battery piece in the cooling furnace chamber. According to the sintering furnace, the heat loss can be reduced, the sintering effect of the battery piece can be improved, and then the conversion efficiency of the battery piece can be improved.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic processing technology, specifically relating to a sintering furnace. Background Technology

[0002] A sintering furnace is a piece of equipment used to manufacture solar cells and has a significant impact on the conversion efficiency of the cells. The furnace chamber of a sintering furnace typically contains a sintering zone and a cooling zone. During the sintering process, a conveyor belt mechanism is usually required to transport the cells to the sintering zone for sintering, and after sintering, the cells are transported to the cooling zone for cooling.

[0003] In existing technologies, the conveyor belt mechanism of sintering furnaces is usually an integrated conveyor belt. That is, the solar cells are transported from outside the furnace cavity to inside the furnace cavity through a single conveyor belt, passing through the sintering zone and the cooling zone in sequence, and finally transported back to the outside of the furnace cavity.

[0004] However, due to the temperature difference between the sintering and cooling zones within the sintering furnace, and the temperature difference between the furnace cavity and the ambient temperature outside, the integrated conveyor belt undergoes a cyclical process: transporting heat from the higher-temperature sintering zone to the lower-temperature cooling zone, then from the cooling zone to the ambient temperature outside the furnace for further cooling, and finally re-entering the sintering zone after a half-circle outside the furnace for heat absorption and reheating. This results in significant energy waste. Furthermore, during the repeated heating and cooling processes, the conveyor belt is prone to uneven temperature distribution, affecting the sintering effect of the solar cells and reducing their conversion efficiency. Utility Model Content

[0005] This application aims to provide a sintering furnace to solve the problems of high energy consumption and poor sintering effect of existing sintering furnaces.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] This application discloses a sintering furnace, the sintering furnace comprising:

[0008] The sintering furnace body has a sintering furnace cavity and a cooling furnace cavity. The sintering furnace cavity has a feed end and a discharge end that are arranged opposite to each other. The cooling furnace cavity is located near the discharge end.

[0009] The first transmission mechanism is located inside the sintering furnace cavity. The first transmission mechanism reciprocates between the feeding end and the unloading end to transport the battery cells from the feeding end to the unloading end for unloading, and returns them to the feeding end after unloading. The reciprocating motion of the first transmission mechanism transporting the battery cells and returning them to the feeding end is all located inside the sintering furnace cavity.

[0010] And a second transfer mechanism, which is located inside the cooling furnace cavity, for transferring the sintered battery cells inside the cooling furnace cavity.

[0011] Optionally, the sintering furnace cavity and the cooling furnace cavity are connected.

[0012] Optionally, a transition zone is provided between the sintering furnace cavity and the cooling furnace cavity, and the transition zone is provided with a transition mechanism, which is used to realize the transition of the battery cell between the sintering furnace cavity and the cooling furnace cavity.

[0013] Optionally, the sintering furnace cavity and the cooling furnace cavity are two independent furnace cavities.

[0014] Optionally, the sintering furnace further includes a transfer mechanism disposed between the sintering furnace chamber and the cooling furnace chamber, the transfer mechanism being used to transfer the sintered battery cells from the sintering furnace chamber to the cooling furnace chamber.

[0015] Optionally, the first transmission mechanism includes a first roller, a first transmission belt wound around the first roller, and a first tensioning mechanism. The first roller is used to drive the first transmission belt to reciprocate between the feeding end and the unloading end, so as to transport the battery cells from the feeding end to the unloading end through the first transmission belt, and return them to the feeding end after unloading is completed.

[0016] The first tensioning mechanism is at least partially connected to the first conveyor belt for tensioning the first conveyor belt;

[0017] The first roller, the first conveyor belt, and the first tensioning mechanism are all located inside the sintering furnace cavity.

[0018] Optionally, a first heating mechanism is provided inside the sintering furnace cavity. The first heating mechanism is located close to the first conveyor belt and is used to heat the battery cells on the first conveyor belt. The first heating mechanism is located away from the first roller.

[0019] Optionally, the sintering furnace further includes a pre-sintering furnace chamber, which is located near the feed end of the sintering furnace chamber and is used to pre-sinter the battery cells.

[0020] A third transmission mechanism is provided inside the pre-sintering furnace cavity, which is used for the transmission of battery cells within the pre-sintering furnace cavity.

[0021] Optionally, the pre-sintering furnace cavity and the sintering furnace cavity are connected;

[0022] The third transmission mechanism is an integral part of the first transmission mechanism, or the third transmission mechanism and the first transmission mechanism are separate structures.

[0023] Optionally, the pre-sintering furnace cavity and the sintering furnace cavity are two independent furnace cavities.

[0024] In this embodiment, by providing a separate first transmission mechanism in the sintering furnace cavity and a separate second transmission mechanism in the cooling furnace cavity, heat loss caused by the integrated conveyor belt transferring the cells from the higher-temperature sintering furnace cavity to the lower-temperature cooling furnace cavity can be avoided. Furthermore, since the reciprocating motion of the first transmission mechanism transporting the battery cells and returning them to the feed end is entirely within the sintering furnace cavity, heat loss caused by the first transmission mechanism entering and exiting the sintering furnace cavity can be avoided. Because the first transmission mechanism operates only within the sintering furnace cavity, the temperature on the first transmission mechanism is more uniform, which correspondingly improves the sintering effect of the battery cells 20 on the first transmission mechanism and increases the conversion efficiency of the battery cells.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of a sintering furnace as described in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of another sintering furnace described in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of another sintering furnace described in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of another sintering furnace described in the embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the structure of another sintering furnace described in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of another sintering furnace described in the embodiments of this application.

[0033] Figure reference numerals: 10 – Sintering furnace body, 101 – Sintering furnace cavity, 102 – Cooling furnace cavity, 103 – Pre-sintering

[0034] Furnace cavity, 104 - transition zone, 11 - first conveying mechanism, 111 - first roller, 112 - first conveyor belt, 12 - second conveying mechanism, 121 - second roller, 122 - second conveyor belt, 13 - first heating mechanism, 14 - second heating mechanism, 15 - third conveying mechanism, 151 - third roller, 152 - third conveyor belt, 16 - transition mechanism, 20 - battery cell, A - feed end, B - discharge end. Detailed Implementation

[0035] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0036] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Reference Figure 1 The diagram shows a structural schematic of a sintering furnace according to an embodiment of this application, as shown below. Figure 1 As shown, the sintering furnace may specifically include: a sintering furnace body 10, which has a sintering furnace cavity 101 and a cooling furnace cavity 102. The sintering furnace cavity 101 has a feed end A and a discharge end B arranged opposite to each other, and the cooling furnace cavity 102 is arranged close to the discharge end B; a first transmission mechanism 11, which is located in the sintering furnace cavity 101 and reciprocates between the feed end A and the discharge end B to transport the battery cell 20 from the feed end A to the discharge end B for unloading, and then returns it to the feed end A after unloading. The reciprocating motion of the first transmission mechanism 11 in transporting the battery cell 20 and returning it to the feed end A is all located within the sintering furnace cavity 101; and a second transmission mechanism 12, which is located in the cooling furnace cavity 102 and can be used for the transmission of the sintered battery cell 20 within the cooling furnace cavity 102.

[0040] In this embodiment, by providing a separate first transmission mechanism 11 in the sintering furnace chamber 101 and a separate second transmission mechanism 12 in the cooling furnace chamber 102, heat loss caused by the integrated conveyor belt transferring the battery cells 20 from the higher-temperature sintering furnace chamber 101 to the lower-temperature cooling furnace chamber 102 can be avoided. Furthermore, since the reciprocating motion of the first transmission mechanism 11 transporting the battery cells 20 and returning them to the feed end A is all within the sintering furnace chamber 101, heat loss caused by the first transmission mechanism 11 entering and exiting the sintering furnace chamber 101 can be avoided. Because the first transmission mechanism 11 operates only within the sintering furnace chamber 101, the temperature on the first transmission mechanism 11 is more uniform, which correspondingly improves the sintering effect of the battery cells 20 on the first transmission mechanism 11 and increases the conversion efficiency of the battery cells 20.

[0041] In specific applications, after screen printing, the solar cell 20 can be transferred to the inlet A of the sintering furnace 101 by a transfer mechanism located before the sintering furnace chamber 101, and then transferred to the first transfer mechanism 11 at the inlet A. During the transfer of the solar cell 20 within the sintering furnace chamber 101 by the first transfer mechanism 11, the solar cell 20 can be sintered. After sintering, the solar cell 20 can be transferred by the first transfer mechanism 11 to the cooling furnace chamber 102 for cooling. After cooling in the cooling furnace chamber 102, the second transfer mechanism 12 can transport the solar cell 20 to the subsequent transfer mechanism, which then transports it to the subsequent testing equipment for further testing processes.

[0042] In practical applications, the temperature of the sintering furnace chamber 101 is typically 400-1000℃, while the temperature of the cooling furnace chamber 102 is typically below 200℃. That is, the temperature of the sintering furnace chamber 101 is much higher than the temperature of the cooling furnace chamber 102. Since the reciprocating motion of the first conveying mechanism 11 transporting the battery cell 20 and returning it to the feed end A is all within the sintering furnace chamber 101, the temperature on the first conveying mechanism 11 can be maintained at a relatively high and stable level for a long period, resulting in greater temperature stability and less heat loss. Correspondingly, the temperature of the battery cell 20 located on the first conveying mechanism 11 is also relatively stable during the sintering process, which can greatly improve the sintering effect of the battery cell 20.

[0043] For example, the first transmission mechanism 11 and the second transmission mechanism 12 may include, but are not limited to, at least one of belt transmission mechanism and chain transmission mechanism. The specific types of the first transmission mechanism 11 and the second transmission mechanism 12 are not limited in the embodiments of this application.

[0044] like Figure 1 As shown, the sintering furnace chamber 101 and the cooling furnace chamber 102 are connected, meaning that the sintering furnace chamber 101 and the cooling furnace chamber 102 can be located in different areas of the same chamber within the sintering furnace body 10, thereby simplifying the structure of the sintering furnace body 10. Simultaneously, this facilitates the transfer of the battery cells 20 between the sintering furnace chamber 101 and the cooling furnace chamber 102.

[0045] Reference Figure 2 The diagram shows a structural schematic of another sintering furnace described in an embodiment of this application, as shown below. Figure 2 As shown, a transition zone 104 is also provided between the sintering furnace chamber 101 and the cooling furnace chamber 102. The transition zone 104 is provided with a transition mechanism 16. The transition mechanism 16 can be used to realize the transition of the battery cell 20 between the sintering furnace chamber 101 and the cooling furnace chamber 102. The transition mechanism 16 can be used to transfer the battery cell 20 on the first transfer mechanism 11 to the second transfer mechanism 12.

[0046] In practical applications, the temperature of the transition zone 104 can be between the temperatures of the sintering furnace cavity 101 and the cooling furnace cavity 102. The transition zone 104 can be used to separate the sintering furnace cavity 101 and the cooling furnace cavity 102 to reduce the heat radiated from the sintering furnace cavity 101 to the cooling furnace cavity 102, which is beneficial for the cooling of the solar cell 20 in the cooling furnace cavity 102. The transition mechanism 16 can be used to transfer the solar cell 20 on the first transfer mechanism 11 to the second transfer mechanism 12 to realize the flow of the solar cell 20 between the sintering furnace cavity 101 and the cooling furnace cavity 102.

[0047] Optionally, the transition mechanism 16 can be a belt transmission mechanism. The belt on the transition mechanism 16 can be on the same horizontal plane as the first transmission belt 112 of the first transmission mechanism 11 and the second transmission belt 122 of the second transmission mechanism 12, so as to achieve smooth transmission of the battery cell 20.

[0048] Reference Figure 3 This shows a schematic diagram of the structure of another sintering furnace described in an embodiment of this application, as follows: Figure 3 As shown, the sintering furnace chamber 101 and the cooling furnace chamber 102 are two independent furnace chambers to prevent heat from radiating from the sintering furnace chamber 101 to the cooling furnace chamber 102, thereby improving the cooling effect of the cooling furnace chamber 102 on the sintered solar cells 20.

[0049] Optionally, if the sintering furnace chamber 101 and the cooling furnace chamber 102 are two independent furnace chambers, the sintering furnace may further include a transfer mechanism. Figure 3 (Not shown in the image) The transfer mechanism is located between the sintering furnace chamber 101 and the cooling furnace chamber 102. The transfer mechanism can be used to transfer the sintered battery cell 20 from the sintering furnace chamber 101 to the cooling furnace chamber 102, so as to realize the transfer of the battery cell 20 between the two independent furnace chambers.

[0050] For example, the transfer mechanism may include, but is not limited to, at least one of belt transmission mechanism, chain transmission mechanism and robotic arm. The specific type of the transfer mechanism may not be limited in the embodiments of this application.

[0051] like Figures 1 to 3 As shown, the first transmission mechanism 11 includes a first roller 111, a first transmission belt 112 wound around the first roller 111, and a first tensioning mechanism. The first roller 111 can drive the first transmission belt 112 to reciprocate between the inlet end A and the outlet end B, so as to transport the battery cells 20 from the inlet end A to the outlet end B via the first transmission belt 112, and return them to the inlet end A after unloading. The first tensioning mechanism is at least partially connected to the first transmission belt 112 for tensioning the first transmission belt 112. The first roller 111, the first transmission belt 112, and the first tensioning mechanism are all located inside the sintering furnace cavity 101, so that the first transmission mechanism 11 can operate entirely within the sintering furnace cavity 101. In particular, this allows the first transmission belt 112 to operate and be tensioned entirely within the sintering furnace cavity 101, thereby reducing the heat loss of the first transmission belt 112.

[0052] Correspondingly, the second transmission mechanism 12 may include a second roller 121 and a second transmission belt 122. The second transmission belt 122 may be wound around the second roller 121. The rotation of the second roller 121 can drive the second transmission belt 122 to move. The movement of the second transmission belt 122 can realize the transmission of the battery cells 20 in the cooling furnace cavity 102.

[0053] In practical applications, both the first conveyor belt 112 and the second conveyor belt 122 are metal conveyor belts. Because metal conveyor belts have high strength and are easily kept horizontal, they facilitate the transport of the battery cells 20.

[0054] In this configuration, it is less likely to cause clogging of the solar cells 20. Furthermore, compared to roller conveyor systems, there are no gaps on the metal conveyor belt. Therefore, if the solar cells 20 have microcracks or missing corners, the fragments can remain on the metal conveyor belt after falling. This prevents the fragments from falling further into the heating mechanism below the first conveyor mechanism 11, thus avoiding uneven heating and affecting the sintering effect of the solar cells 20.

[0055] For example, the metal conveyor belt can be a steel conveyor belt, an iron conveyor belt, etc., and the material of the metal conveyor belt is not specifically limited in this application embodiment.

[0056] In specific applications, a first heating mechanism 13 is installed inside the sintering furnace cavity 101. The first heating mechanism 13 is positioned close to the first conveyor belt 112 and can be used to heat the battery cells 20 on the first conveyor belt 112. The first heating mechanism 13 is positioned away from the first roller 111 to avoid heating the first roller 111. In this way, heat waste caused by ineffective heating of the first roller 111 can be avoided, and overheating of the first roller 111 can be prevented, thereby improving the service life of the first roller 111.

[0057] For example, the first heating mechanism 13 can be at least one of a heating lamp or a thermocouple. Figure 1 As shown, in order to maintain the sintering furnace cavity 101 at a suitable sintering temperature, the heating lamps or thermocouples can be respectively positioned above and below the upper conveyor belt to heat the battery cell 20 from both the upper and lower sides for sintering. The lower conveyor belt can be located below the first heating mechanism 13 to achieve better heat preservation and further avoid heat loss.

[0058] Reference Figure 4 This shows a schematic diagram of the structure of another sintering furnace according to an embodiment of this application, with reference to... Figure 5 This illustrates a structural schematic diagram of yet another sintering furnace described in an embodiment of this application. Figure 4 and Figure 5 As shown, the sintering furnace may further include a pre-sintering furnace chamber 103, which is located near the feed end A of the sintering furnace chamber 101. The pre-sintering furnace chamber 103 can be used to pre-sinter the battery cells 20. A third transmission mechanism 15 is provided in the pre-sintering furnace chamber 103, which can be used to transmit the battery cells 20 in the pre-sintering furnace chamber 103.

[0059] Typically, the temperature of the pre-sintering furnace chamber 103 can be 200-400℃. The pre-sintering furnace chamber 103 can be used to pre-sinter the battery cells 20 to avoid sintering defects caused by the rapid temperature rise in a short time when the battery cells 20 directly enter the sintering furnace chamber 101.

[0060] like Figure 4 , Figure 5 As shown, the pre-sintering furnace cavity 103 is provided with a second heating mechanism 14, which can be used to heat the battery cells 20 in the pre-sintering furnace cavity 103. The second heating mechanism 14 can be at least one of a heating lamp or a thermocouple.

[0061] Specifically, in order to maintain the sintering furnace chamber 101 at a high sintering temperature, the heating lamps or thermocouples can be respectively positioned above and below the upper conveyor belt to heat the battery cells 20 from both the upper and lower sides for sintering. The temperature of the pre-sintering furnace chamber 103 is relatively lower than that of the sintering furnace chamber 101, and only the heating lamps or thermocouples need to be positioned above the conveyor belt.

[0062] Figure 5 As shown, the third transmission mechanism 15 includes a third roller 151 and a third transmission belt 152 wound around the third roller 151; the second heating mechanism 14 is arranged away from the third roller 151 to avoid heat waste caused by ineffective heating of the third roller 151, and to avoid overheating of the third roller 151, thereby improving the service life of the third roller 151.

[0063] like Figure 4 and Figure 5 As shown, the pre-sintering furnace chamber 103 and the sintering furnace chamber 101 are connected. That is, the sintering furnace chamber 101 and the pre-sintering furnace chamber 103 can be located in different areas of the same chamber within the sintering furnace body 10, thereby simplifying the structure of the sintering furnace body 10. Simultaneously, this facilitates the transfer of the battery cells 20 between the pre-sintering furnace chamber 103 and the sintering furnace chamber 101.

[0064] like Figure 4As shown, the third transmission mechanism 15 and the first transmission mechanism 11 are integrated into one unit. That is, the first transmission mechanism 11 can realize the transmission of the battery cell 20 in the pre-sintering furnace cavity 103 and the sintering furnace cavity 101. On the one hand, it can improve the transmission efficiency of the battery cell 20 in the pre-sintering furnace cavity 103 and the sintering furnace cavity 101. On the other hand, it can also simplify the structure of the transmission mechanism for transmitting the battery cell 20 in the sintering furnace.

[0065] like Figure 5 As shown, the third transmission mechanism 15 and the first transmission mechanism 11 are separate structures. That is, a separate first transmission mechanism 11 is provided in the sintering furnace chamber 101, and a separate third transmission mechanism 15 is provided in the pre-sintering furnace chamber 103. The first transmission mechanism 11 only needs to operate in the sintering furnace chamber 101 and does not need to operate in the relatively lower temperature pre-sintering furnace chamber 103, which helps to further reduce heat loss on the first transmission mechanism 11. Correspondingly, the temperature of the battery cell 20 located on the first transmission mechanism 11 is also more stable during the sintering process, which can greatly improve the sintering effect of the battery cell 20.

[0066] Reference Figure 6 This shows a schematic diagram of the structure of another sintering furnace described in an embodiment of this application, as follows: Figure 6 As shown, the pre-sintering furnace chamber 103 and the sintering furnace chamber 101 are two independent furnace chambers to avoid mutual interference between the sintering furnace chamber 101 and the pre-sintering furnace chamber 103, thereby improving the sintering effect of the solar cell 20.

[0067] Optionally, if the sintering furnace chamber 101 and the pre-sintering furnace chamber 103 are two independent furnace chambers, the sintering furnace may further include a transfer mechanism. Figure 6 (Not shown in the image) The transfer mechanism is located between the sintering furnace chamber 101 and the pre-sintering furnace chamber 103. The transfer mechanism can be used to transfer the pre-sintered battery cell 20 from the pre-sintering furnace chamber 103 to the sintering furnace chamber 101, so as to realize the transfer of the battery cell 20 between the two independent furnace chambers.

[0068] In summary, the sintering furnace described in the embodiments of this application may include at least the following advantages:

[0069] In this embodiment, by providing a separate first conveying mechanism in the sintering furnace cavity and a separate second conveying mechanism in the cooling furnace cavity, heat loss caused by the integrated conveyor belt transferring the cells from the higher-temperature sintering furnace cavity to the lower-temperature cooling furnace cavity can be avoided. Furthermore, since the reciprocating motion of the first conveying mechanism transporting the battery cells and returning them to the feed end is entirely within the sintering furnace cavity, heat loss caused by the first conveying mechanism entering and exiting the sintering furnace cavity can be avoided. Because the first conveying mechanism operates only within the sintering furnace cavity, the temperature on the first conveying mechanism is more uniform, which correspondingly improves the sintering effect of the battery cells on the first conveying mechanism and increases the conversion efficiency of the battery cells.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sintering furnace, characterized by, The sintering furnace comprises: a sintering furnace body, wherein a sintering furnace chamber and a cooling furnace chamber are arranged in the sintering furnace body, the sintering furnace chamber has an inlet end and a discharge end arranged oppositely, and the cooling furnace chamber is arranged close to the discharge end; a first conveying mechanism, which is located in the sintering furnace chamber, reciprocates between the inlet end and the discharge end to convey the battery piece from the inlet end to the discharge end for discharging, and returns to the inlet end after the discharging is completed, and the reciprocation of the first conveying mechanism to convey the battery piece and return to the inlet end is all located in the sintering furnace chamber; and a second conveying mechanism, which is located in the cooling furnace chamber and is used for conveying the sintered battery piece in the cooling furnace chamber. The first heating mechanism is arranged close to the first conveying belt in the sintering furnace chamber, and is used for heating and keeping warm the battery piece on the first conveying belt, and the first heating mechanism is arranged away from the first roller. The sintering furnace further comprises a pre-sintering furnace chamber, which is arranged close to the inlet end of the sintering furnace chamber and is used for pre-sintering the battery piece, and the pre-sintering furnace chamber and the sintering furnace chamber are communicated, and the temperature of the pre-sintering furnace chamber is 400 DEG C. The third conveying mechanism is in a split structure with the first conveying mechanism.

2. The sintering furnace according to claim 1, characterized in that The sintering furnace chamber and the cooling furnace chamber are communicated.

3. The sintering furnace according to claim 2, characterized in that The sintering furnace chamber and the cooling furnace chamber are communicated.

4. The sintering furnace according to claim 3, characterized in that The sintering furnace chamber and the cooling furnace chamber are two furnace chambers independent of each other.

5. The sintering furnace according to claim 4, characterized in that The sintering furnace further comprises a transfer mechanism, which is arranged between the sintering furnace chamber and the cooling furnace chamber and is used for transferring the sintered battery piece from the sintering furnace chamber to the cooling furnace chamber.

6. The sintering furnace according to claim 1, characterized in that The first conveying mechanism further comprises a first tensioning mechanism wound on the first roller, and the first roller is used to drive the first conveying belt to reciprocate between the inlet end and the discharge end to convey the battery piece from the inlet end to the discharge end through the first conveying belt and return to the inlet end after the discharging is completed. The first tensioning mechanism is at least partially connected with the first conveying belt to tension the first conveying belt. The first roller, the first conveying belt and the first tensioning mechanism are all located in the sintering furnace chamber.

7. The sintering furnace according to claim 1, wherein The third conveying mechanism is used for conveying the battery piece in the pre-sintering furnace chamber.

8. The sintering furnace according to claim 7, characterized in that The pre-sintering furnace chamber and the sintering furnace chamber are two furnace chambers independent of each other.

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