Battery piece passivation treatment system

Abstract

The invention discloses a battery piece passivating treatment system, and relates to the technical field of battery piece production, the battery piece passivating treatment system comprises a material conveying mechanism used for providing a passivating unit, a passivating furnace used for containing the passivating unit and a carrying mechanism arranged between the material conveying mechanism and the passivating furnace, the passivating furnace comprises a furnace body and a furnace cover arranged on the top of the furnace body in a liftable mode, the furnace cover is used for bearing the passivation units, and the passivation units which are passivated are sequentially transferred to a material changing position, or the passivation units at the material changing position are sequentially transferred to a buffer storage position; the carrying mechanism is used for transferring the passivation unit at the material changing position to the material conveying mechanism, or transferring the passivation unit on the material conveying mechanism to the furnace cover at the material changing position, so that the furnace cover bears the passivation unit and is matched with the carrying mechanism to complete the loading or unloading process of the passivation unit at the same material changing position, the number of times of transferring battery pieces is reduced, and the efficiency is improved. The efficiency of assembling and disassembling the passivation unit and the placing precision of the battery piece in the carrier are improved, and the passivation quality of the cut surface of the battery piece is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production, and in particular to a battery cell passivation processing system. Background Art

[0002] Cell passivation technology aims to improve the performance and stability of the battery by forming a passivation layer on the surface or edge of the cell to reduce surface defects and micro damage. The passivation layer can effectively reduce the recombination of charge carriers, increase the minority carrier lifetime and open circuit voltage of the cell, and significantly improve the conversion efficiency of the solar cell. Existing cell passivation equipment usually transfers the carrier containing the cell into the furnace body by means of a tray horizontally or by lifting. The tray carries several carriers. The above scheme loads the carrier into the furnace by a tray, and the carrier is moved multiple times, which not only affects the placement accuracy of the cell in the carrier, but also increases the complexity of the process steps and mechanical structure of loading and unloading the cell into the furnace. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a battery cell passivation processing system.

[0004] The present application provides a staggered welding ribbon laying positioning method, comprising: a feeding mechanism, used to provide a plurality of passivation units, wherein the passivation units include a carrier equipped with a plurality of stacked battery sheets, and the cut surfaces of the plurality of stacked battery sheets together constitute the surface to be passivated of the passivation unit; A passivation furnace is provided with a passivation chamber for accommodating a plurality of the passivation units, the passivation furnace comprises a furnace body and a furnace cover which is liftable and arranged on the top of the furnace body, the furnace cover is used to carry the passivation units, and a material change position is arranged on the furnace cover; wherein the furnace cover sequentially transfers the passivation units which have been passivated to the material change position, or the furnace cover sequentially transfers the passivation units to be passivated on the material change position to the buffer position of the furnace cover; The transport mechanism is arranged between the feeding mechanism and the passivation furnace, and is used to transfer the passivation unit that has been passivated and is placed on the furnace cover at the material change position to the feeding mechanism, or to transfer the passivation unit to be passivated on the feeding mechanism to the furnace cover at the material change position.

[0005] Furthermore, at least two bearing members are provided on the circumference of the bottom of the furnace cover, and the bearing members are used to receive the passivation unit, and the passivation unit is arranged with the surface to be passivated facing downward.

[0006] Furthermore, the furnace cover includes a top cover and a rotating carrier plate arranged at the lower part of the top cover, one end of the rotating carrier plate is connected to a driving mechanism, and at least two supporting members are arranged on the circumference of the bottom of the rotating carrier plate. The driving mechanism drives the rotating carrier plate to rotate so as to sequentially transfer the passivation units that have been passivated to the material replacement position, or to sequentially transfer the passivation units to be passivated at the material replacement position to the cache position of the furnace cover.

[0007] Furthermore, the supporting member includes a fixing seat fixedly connected to the rotating carrier, and a limiting member arranged on the fixing seat, and the limiting member is provided with a slide groove, and the slide groove is used to carry the carrier to fix the passivation unit on the limiting member.

[0008] Furthermore, the slide groove comprises a closed end and an open end, the open end is arranged outward, and the transport mechanism delivers the passivation unit into the limiting member from the open end.

[0009] Furthermore, one end of the limit member is connected to a driving component, and the driving component can drive the limit member to rotate a preset angle, and at the same time drive the passivation unit to rotate the preset angle, and the preset angle is less than or equal to 180 degrees. The preset angle makes the open end of the slide groove higher than the closed end of the slide groove, or makes the open end and the closed end face inward in opposite directions.

[0010] Furthermore, the transport mechanism grabs the passivation unit on the feeding mechanism and flips it 90 degrees, rotates the surface to be passivated of the passivation unit from the side to the bottom and then loads it on the furnace cover at the material change position, so that the surface to be passivated of the passivation unit on the furnace cover faces downward.

[0011] Furthermore, the transport mechanism includes a multi-axis manipulator and a transfer fork arranged at the end of the multi-axis manipulator, the transfer fork includes a positioning member and a support column, the positioning member and the support column act on two adjacent surfaces of the passivation unit to position the passivation unit in the transfer fork.

[0012] Furthermore, the feeding mechanism includes a loading mechanism and a unloading mechanism arranged side by side, and the loading mechanism and the unloading mechanism are both arranged on the same side of the carrying mechanism and have opposite conveying directions. The loading mechanism carries and conveys the passivation unit to one end close to the carrying mechanism, and the unloading mechanism conveys the passivation unit close to one end of the carrying mechanism to the rear end.

[0013] Furthermore, the feeding mechanism also includes an annealing mechanism, and the transport mechanism feeds the passivation unit that has been passivated and taken from the material change position into the annealing mechanism, and the annealing mechanism is used to heat and then cool the passivation unit.

[0014] Furthermore, a partition and a vapor deposition mechanism are provided in the furnace body, the passivation unit on the furnace cover is placed above the partition, the vapor deposition mechanism is arranged below the partition, a hole is provided on the partition, and the vapor deposition mechanism emits vapor deposition particles to the surface to be passivated of the passivation unit above the hole.

[0015] The cell passivation processing system proposed in the present application places a carrier loaded with a plurality of cell sheets on the furnace cover of the passivation furnace, so that the cell sheets can enter and exit the passivation furnace together with the furnace cover, and the furnace cover can also transfer the passivation unit installed thereon to the material change position and dock with the carrier mechanism, and the carrier mechanism is used to directly transfer the passivation unit placed on the furnace cover to the material change position on the conveying mechanism used to transfer the passivation unit. Similarly, the carrier mechanism can also transfer the unpassivated passivation unit on the conveying mechanism to the furnace cover at the material change position, thereby completing the passivation process on the furnace cover. The loading and unloading process of multiple passivation units, the furnace cover and the carrying mechanism cooperate together to complete the loading and unloading of the passivation units at the same workstation (material change station). Compared with the prior art, in which a plurality of passivated materials are placed in the passivation furnace body in sequence by a robot, it not only reduces the number of times the battery cell carrier is transported, improves the efficiency of loading and unloading the passivation unit, but also further improves the placement accuracy of the battery cell in the carrier, thereby improving the passivation quality of the cross-section of the battery cell, and simplifies the mechanical structure of the battery cell passivation processing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a battery cell passivation treatment system proposed by the present invention; Figure 2 A schematic diagram of the structure of the furnace cover proposed by the present invention; Figure 3 A schematic diagram of the structure of the carrier proposed by the present invention; Figure 4 This is a schematic diagram of the structure of the passivation unit proposed by the present invention; Figure 5 It is a schematic diagram of the structure of the carrier mechanism proposed by the present invention; Figure 6 This is a schematic diagram of the structure of the passivation furnace proposed in the present invention.

[0018] Wherein, the accompanying drawings are marked as follows: 100, passivation unit; 101, carrier; 1011, guide column; 102, surface to be passivated; 1, feeding mechanism; 2, passivation furnace; 21, furnace cover; 211, top cover; 212, rotating carrier; 213, driving mechanism; 214, bearing member; 2141, fixed seat; 2142, limit member; 21422, slide; 22, furnace body; 221, partition; 222, evaporation mechanism; 3, transport mechanism; 31, multi-axis manipulator; 32, transfer fork; 321, support column; 322, positioning member. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 As shown, the present application provides a battery cell passivation processing system, including: a feeding mechanism 1, a passivation furnace 2 and a carrying mechanism 3, wherein the feeding mechanism 1 is used to transport a plurality of passivation units 100, provide the passivation units 100 to the carrying mechanism 3, or receive the passivation units 100 transferred by the carrying mechanism 3 and transfer them out of the battery cell passivation processing system. The passivation unit 100 includes a plurality of stacked battery cells and a carrier 101 equipped with the plurality of stacked battery cells. The cross-sections of the plurality of stacked battery cells together constitute a surface 102 to be passivated of the passivation unit 100. A passivation chamber for accommodating the plurality of carriers 101 is provided in the passivation furnace 2. The passivation furnace 2 is also equipped with a passivation mechanism for emitting a passivation particle source. The surface 102 to be passivated in the passivation chamber is arranged downward to directly process the surface 102 to be passivated. The passivation particle source in the furnace body 22 can adhere to the surface 102 to be passivated of the passivation unit 100 in a vacuum environment to complete the passivation of the surface 102 to be passivated of the passivation unit 100.

[0023] Specifically, the passivation furnace 2 includes a furnace body 22 and a furnace cover 21 which can be lifted and lowered and is arranged on the top of the furnace body 22. The furnace cover 21 can be lifted and lowered and the passivation units 100 which are also arranged on the furnace cover 21 can enter and exit the passivation furnace 2 together. The furnace cover 21 which is moved out of the passivation furnace 2 transfers the passivation units 100 which have been passivated to the material change position in sequence. The material change position is arranged on the side facing the carrier mechanism 3, or the passivation units 100 to be passivated on the material change position are transferred to the cache position of the furnace cover 21. It should be noted that the cache position includes any other position except the material change position, but the passivation units 100 on the cache position are never separated from the furnace cover 21. A carrier 214 is arranged on the furnace cover 21. The carrier 214 is used to load at least two passivation units 100. The surface 102 to be passivated of the passivation unit 100 is arranged downward. When the carriers 214 arranged on the furnace cover 21 are all equipped with the passivation units 100, all the passivation units 100 are loaded. The transport mechanism 3 is arranged between the passivation furnace 2 and the feeding mechanism 1, and is used to transfer the passivation unit 100 that has been passivated and is placed on the material change position on the transfer furnace cover 21 to the feeding mechanism 1, or the transport mechanism 3 is used to transfer the passivation unit 100 to be passivated on the feeding mechanism 1 to the furnace cover 21 at the material change position, and the furnace cover 21 sequentially moves the passivation units 100 located on multiple carriers 214 to the material change position, and the passivation unit 100 moved to the material change position is taken out by the transport mechanism 3 and placed on the feeding mechanism 1, and then the feeding mechanism 1 moves the passivation unit 100 that has been passivated to other equipment, or the furnace cover 21 moves the empty carriers 214 moves to the material changing position in sequence, and the passivation units 100 that have not been passivated at the front end of the feeding mechanism 1 are transported by the carrying mechanism 3 to the unloaded carrier 214 on the material changing position in sequence, thereby transferring the passivation units 100 to be passivated to the unloaded carrier 214 on the furnace cover 21 in sequence, or transferring the passivation units 100 that have been passivated on the furnace cover 21 to the feeding mechanism 1 in sequence, so as to complete the loading and unloading of the passivation units 100 on the furnace cover 21. After the loading and unloading of the passivation units 100 on the furnace cover 21 are all completed, the furnace cover 21 moves the passivation units 100 into the furnace body 22 of the passivation furnace 2 or moves them out of the furnace body 22.

[0024] It should be noted that the above-mentioned bearing member 214 may also be a structure provided on the furnace cover 21 and formed integrally with the furnace cover 21 , and does not need to be assembled separately.

[0025] It should be noted that the support member 214 can also be directly fixed on the furnace cover 21, and the furnace cover 21 is rotatably connected to an external rotating mechanism, and the rotating mechanism drives the furnace cover 21 to rotate and rotate the support member 214 arranged on the furnace cover 21 to the material change position.

[0026] Compared with the prior art, the present invention uses the furnace cover 21 of the passivation furnace 2 as a carrier for carrying the passivation unit 100, cooperates with the carrying mechanism 3 to complete the loading and unloading of all the passivation units 100, and directly covers the upper part of the furnace body 22 to completely enclose the passivation units 100 on the furnace cover 21 inside the furnace body 22, and participates in the passivation process of the cut surfaces of the battery cells inside the furnace body 22. The cut surfaces of the battery cells in the carrier loaded on the furnace cover 21 are passivated and coated inside the furnace body 22, and no other supporting structure is required, and the structure is simple. Among them, the furnace cover 21 moves the passivation unit 100 on the carrier 214 to the material change position in turn, or moves the empty carrier 214 to the material change position, cooperates with the transport mechanism 3 to unload the passivation unit 100 at the material change position in turn, or loads the passivation unit 100 on the feed mechanism 1 on the carrier 214 at the material change position, and cooperates to complete the loading and unloading actions of the passivation unit 100, thereby reducing the number of times the battery cell carrier 101 is transported, improving the efficiency of loading and unloading the passivation unit 100, and preventing the stacked battery cells in the carrier 101 from being shaken due to the battery cell carrier being moved multiple times, thereby further improving the accuracy of the placement of the battery cells in the carrier 101, ensuring that the cut surface of the stacked battery cells is neat, thereby improving the passivation quality of the cut surface of the battery cells.

[0027] In some embodiments, reference Figure 2 As shown, the furnace cover 21 includes a top cover 211 and a rotating carrier 212 arranged at the lower part of the top cover 211, one end of the rotating carrier 212 is connected to a driving mechanism 213, the driving mechanism 213 is fixed on the top cover 211, and a supporting member 214 is circumferentially arranged at the bottom of the rotating carrier 212. The driving mechanism 213 is used to drive the rotating carrier 212 to rotate and rotate multiple supporting members 214 to the material changing position in sequence. The passivation unit 100 is limited in the supporting member 214 to rotate with the rotating carrier 212 to rotate to the material changing position or the cache position.

[0028] Specifically, Figure 3 As shown, the carrier 214 includes a fixing seat 2141 fixedly mounted on the rotating carrier 212, and a limiting member 2142 connected to the fixing seat 2141. The limiting member 2142 is provided with a slide groove 21422. The slide groove 21422 is used to carry the carrier 101 loaded with battery cells. In order to facilitate the smooth placement of the passivation unit 100, the slide groove 21422 includes a closed end and an open end. The open end is arranged outward, that is, toward one side of the carrier mechanism 3. The open end is also provided with an outer eight-shaped opening. The carrier 101 is provided with a guide member that cooperates with the slide groove 21422. The carrier mechanism 3 puts the guide member on the captured passivation unit 100 into the slide groove 21422 accordingly until the guide member abuts against the closed end, so that the passivation unit 100 is positioned on the limiting member 2142 to fix the passivation unit 100 on the limiting member 2142 of the furnace cover 21. The outer eight-shaped opening has a guiding function.

[0029] In other embodiments, one end of the limit member 2142 is connected to a driving component, which can drive the limit member 2142 to rotate a preset angle, and at the same time drive the passivation unit 100 to rotate a preset angle, which is less than or equal to 180 degrees, so that the open end of the slide groove 21422 is higher than the closed end of the slide groove 21422, or the open end and the closed end are oppositely facing inward. Specifically, when the preset angle is less than 180 degrees, the open end of the chute 21422 is higher than the closed end, so that the passivation unit 100 is directly pressed against the closed end of the chute 21422 under the action of gravity, and the carrier 101 of the passivation unit 100 is further stabilized in the chute 21422, so that the passivation unit 100 does not shift in the chute 21422 under the action of external force; when the preset angle is equal to 180 degrees, the chute 21422 originally at the material change position opens outward, that is, to one side of the carrier mechanism 3, and when the limit member 2142 rotates 180 degrees, the open end and the closed end of the chute 21422 face opposite directions. On the inner side of the carrier 101, the passivation unit 100 is simultaneously flipped 180 degrees. The purpose is to be compatible with battery cells with multiple cut surfaces. When the two opposite side surfaces of the same battery cell are both cut surfaces, after one passivation surface is passivated in the furnace body 22, the limit member 2142 is rotated 180 degrees by the driving component to make the other passivation surface on the opposite side flipped downward, so that the battery cells with two cut surfaces on the same carrier 101 can be completed in one furnace body 22 at one time, and there is no need to complete the passivation process of the same battery cell with two cut surfaces in multiple times, thereby improving the passivation efficiency of the battery cells with two opposite side surfaces as cut surfaces.

[0030] In some embodiments, such as Figure 4 As shown, the carrier 101 includes a frame, which is used to load stacked battery cells. A guide member is provided on the frame, and the guide member is a raised guide column 1011. The guide column 1011 can be set as two symmetrical ones. The two guide columns 1011 both enter the slide groove 21422 and are set parallel to the slide groove 21422, so that the carrier 101 can be horizontally limited in the slide groove 21422. It should be noted that the guide member can also be a guide wheel or a roller bearing, etc., which can support and roll the structure. The limiting cooperation method is simple and convenient, and does not require a complicated locking mechanism. It can be limited on the rotating carrier plate 212. Loading and unloading materials is convenient and quick, which further improves the efficiency of the carrier mechanism 3 in loading and unloading the passivation unit 100.

[0031] In some embodiments, the passivation unit 100 on the feeding mechanism 1 is placed vertically, and the surface to be passivated 102 formed by the stacked cross-sections of the battery cells faces the side of the carrier 101. After the transport mechanism 3 picks up the passivation unit 100 from the feeding mechanism 1, it flips the passivation unit 100 90 degrees, so that the surface to be passivated 102 of the passivation unit 100 is set downward, facing the open side of the furnace body 22, and the open side of the furnace body 22 is upward, and then moved into the furnace body 22 together with the furnace cover 21, and the surface to be passivated 102 of the passivation unit 100 in the furnace body 22 faces downward, that is, it is facing the passivation mechanism that emits the passivation particle source in the furnace body 22.

[0032] In some embodiments, such as Figure 5 As shown, the transport mechanism 3 includes a multi-axis manipulator 31 and a transfer fork 32 disposed at the end of the multi-axis manipulator 31. The transfer fork 32 includes a positioning member 322 and a support column 321. The positioning member 322 and the support column 321 act on two adjacent surfaces of the passivation unit 100 to position the passivation unit 100 in the transfer fork 32. Specifically, the support column 321 is clamped in the upper part of the carrier 101, and the positioning member 322 is limited on the side of a side of the upper part of the carrier 101. When the transport mechanism 3 rotates the passivation unit 100 90 degrees, the positioning member 322 limited on the side of a side of the carrier 101 rotates upward to flip the side of the passivation unit 100 downward, that is, the side of the passivation unit 100 is the surface 102 of the battery cell to be passivated.

[0033] In some embodiments, the feeding mechanism 1 also includes a loading mechanism and a unloading mechanism, which are arranged side by side on the same side of the carrying mechanism 3 and have opposite conveying directions. The loading mechanism conveys the unpassivated passivation unit 100 to the end close to the carrying mechanism 3, and the unloading mechanism conveys the passivation unit 100 that has been passivated to the rear end of the unloading mechanism, which is also the end away from the carrying mechanism 3. The feeding mechanism 1 is docked with an external structure to supply a carrier 101 loaded with a plurality of stacked battery cells to the feeding mechanism 1, or to separate the stacked battery cells that have been passivated from the carrier 101.

[0034] Preferably, the feeding mechanism 1 also includes an annealing mechanism. The transport mechanism 3 takes the passivation unit 100 that has been passivated from the material change position of the furnace cover 21 and then sends it to the annealing mechanism. The annealing mechanism heats and cools the passivation unit 100 that has been passivated, which can significantly improve the performance of the passivation layer on the cut surface of the passivation unit 100 and the conversion efficiency of the battery.

[0035] Specifically, Figure 6As shown, the passivation furnace 2 of the present invention further includes a partition 221 and a vapor deposition mechanism 222 arranged in the passivation furnace 2, the partition 221 separates the passivation unit 100 on the furnace cover 21 from the vapor deposition mechanism 222, the passivation unit 100 is placed above the partition 221, the vapor deposition mechanism 222 is arranged below the partition 221, a hole is provided on the partition 221, the vapor deposition mechanism 222 is arranged opposite to the hole, and emits vapor deposition particles to the to-be-passivated surface 102 of the passivation unit 100 opposite to the top of the hole, and the vapor deposition particles The particles are attached to the passivation surface 102 of the passivation unit 100 directly above the hole through the hole, and some of the evaporated particles emitted by the evaporation mechanism 222 are blocked by the bottom of the partition 221 and attached to the bottom of the partition 221. Because the evaporation mechanism 222 has only relatively concentrated and dense evaporation particles near the evaporation particle emission port, and the evaporation particles are evenly distributed, they can directly attach to the passivation surface 102 through the hole, so that the thickness of the passivation layer on the passivation surface is uniform, thereby improving the quality of the battery cell coating.

[0036] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A battery cell passivation treatment system, characterized in that: include: A material conveying mechanism (1) for conveying a plurality of passivation units (100), wherein the passivation units (100) comprise a plurality of stacked battery cells and a carrier (101) carrying the plurality of stacked battery cells, wherein the cut surfaces of the plurality of stacked battery cells together constitute a surface to be passivated (102) of the passivation unit (100); A passivation furnace (2), comprising a furnace body (22) and a furnace cover (21) which is liftable and arranged on the top of the furnace body (22), wherein a passivation chamber for accommodating a plurality of the passivation units (100) is arranged in the furnace body (22), the furnace cover (21) is used to carry the passivation units, and a material changing position is arranged on the furnace cover (21); The furnace cover (21) sequentially transfers the passivation units (100) that have been passivated to the material change position, or the furnace cover (21) transfers the passivation units (100) to be passivated at the material change position to the buffer position of the furnace cover (21); The transport mechanism (3) is arranged between the feeding mechanism (1) and the passivation furnace (2), and is used to transport the passivation unit (100) that has been passivated on the material change position to the feeding mechanism (1), or to transport the passivation unit (100) to be passivated on the feeding mechanism (1) to the material change position.

2. The cell passivation treatment system according to claim 1, characterized in that: At least two bearing members (214) are provided on the circumference of the bottom of the furnace cover (21), and the bearing members (214) are used to receive the passivation unit, and the surface (102) to be passivated of the passivation unit (100) is arranged downward.

3. The cell passivation treatment system according to claim 2, characterized in that: The furnace cover (21) comprises a top cover (211) and a rotating carrier (212) arranged at the bottom of the top cover (211); one end of the rotating carrier (212) is connected to a driving mechanism (213); at least two bearing members (214) are arranged on the circumference of the bottom of the rotating carrier (212); the driving mechanism (213) drives the rotating carrier (212) to rotate so as to sequentially rotate the passivation units (100) that have been passivated to the material change position, or to rotate the passivation units (100) to be passivated at the material change position to the cache position of the furnace cover (21).

4. The cell passivation treatment system according to claim 3, characterized in that: The supporting member (214) comprises a fixing seat (2141) fixedly connected to the rotating carrier (212), and a limiting member (2142) arranged on the fixing seat (2141), and a sliding groove (21422) is provided on the limiting member (2142), and the sliding groove (21422) is used to support the carrier (101) so as to fix the passivation unit (100) on the limiting member (2142).

5. The cell passivation treatment system according to claim 4, characterized in that: The slide groove (21422) comprises a closed end and an open end, wherein the open end is arranged outward, and the transport mechanism (3) delivers the passivation unit (100) into the limiting member (2142) from the open end.

6. The cell passivation treatment system according to claim 5, characterized in that: One end of the limiting member (2142) is connected to a driving component, and the driving component can drive the limiting member (2142) to rotate a preset angle, and at the same time drive the passivation unit (100) to rotate the preset angle, and the preset angle is less than or equal to 180 degrees. The preset angle makes the open end of the slide groove (21422) higher than the closed end of the slide groove (21422), or makes the open end and the closed end face inward in opposite directions.

7. The cell passivation treatment system according to claim 1, characterized in that: The transport mechanism (3) grabs the passivation unit (100) on the feeding mechanism (1) and turns it 90 degrees, rotates the surface (102) to be passivated of the passivation unit (100) from the side to the bottom, and then loads it onto the furnace cover (21) at the material change position, so that the surface (102) to be passivated of the passivation unit (100) on the furnace cover (21) faces downward.

8. The cell passivation treatment system according to claim 1, characterized in that: The transport mechanism (3) comprises a multi-axis manipulator (31) and a transfer fork (32) arranged at the end of the multi-axis manipulator (31); the transfer fork (32) comprises a positioning member (322) and a support column (321); the positioning member (322) and the support column (321) act on two adjacent surfaces of the passivation unit (100) to position the passivation unit (100) in the transfer fork (32).

9. The cell passivation treatment system according to claim 1, characterized in that: The feeding mechanism (1) comprises a loading mechanism and a unloading mechanism which are arranged side by side. The loading mechanism and the unloading mechanism are both arranged on the same side of the transport mechanism (3) and have opposite transport directions. The loading mechanism carries and transports the passivation unit (100) to one end close to the transport mechanism (3), and the unloading mechanism transports the passivation unit (100) close to one end of the transport mechanism (3) to the rear end.

10. The cell passivation treatment system according to claim 1, characterized in that: The feeding mechanism (1) further comprises an annealing mechanism, wherein the transport mechanism (3) feeds the passivation unit (100) which has been passivated and is taken from the material changing position into the annealing mechanism, and the annealing mechanism is used to heat and then cool the passivation unit (100).

11. The cell passivation treatment system according to claim 1, characterized in that: A partition (221) and a vapor deposition mechanism (222) are provided in the furnace body (22); the passivation unit (100) on the furnace cover (21) is placed above the partition (221); the vapor deposition mechanism (222) is arranged below the partition (221); a hole is provided on the partition (221); the vapor deposition mechanism (222) emits vapor deposition particles to the surface (102) to be passivated facing the passivation unit (100) above the hole.

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