Battery piece loading furnace cover and battery piece evaporation furnace

Abstract

The utility model discloses a battery piece loading furnace cover and a battery piece evaporation furnace, and relates to the technical field of battery piece processing, the battery piece loading furnace cover comprises a furnace door, a driving mechanism and a turntable arranged below the furnace door and connected with the driving end of the driving mechanism, the bottom of the turntable is provided with a plurality of locking mechanisms used for loading battery pieces to be coated, the locking mechanism comprises a plurality of connecting seats fixedly connected to the lower portion of the rotating disc and bearing parts arranged on the connecting seats, the bearing parts are used for positioning tool clamps for bearing battery pieces, and the driving mechanism drives the rotating disc to rotate, sequentially rotates the tool clamps on the rotating disc to the same position and cooperates with an external mechanism to assemble and disassemble the battery piece set. And the step of loading and unloading the battery piece group on the furnace cover is completed only by butting with an external mechanism at the same station, so that the material loading and unloading process steps are simplified, and the material loading and unloading efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell processing, in particular to a battery cell loading furnace cover and a battery cell evaporation furnace. Background Art

[0002] The passivation furnace for solar cells is used to form a passivation layer on the surface or cross-section of the cell that prevents charge recombination. This improves the cell's fill factor and short-circuit current, reduces surface defects, and lowers the surface recombination rate, thereby increasing the cell's minority carrier lifetime and open-circuit voltage, significantly improving the conversion efficiency of the solar cell. In the prior art, for cells placed in a fixture, the furnace body often uses a tray inside the furnace body to carry the cells. Several cells are placed on the tray inside the furnace body. This method of loading cells requires a robot to sequentially carry the fixture loaded with cells into the furnace for placement. The robot has a large displacement space and a long travel distance, and loading and unloading materials takes a long time, and the mechanical structure is relatively complex. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a battery cell loading furnace cover and a battery cell evaporation furnace, which can load the battery cell group placed in the tooling clamp on the furnace cover, and cooperate with external mechanisms to directly load and unload the battery cells on the furnace cover, thereby simplifying the battery cell loading process and improving the efficiency of battery cell loading.

[0004] On the one hand, the present application proposes a battery cell loading furnace cover, comprising: a furnace door, a driving mechanism, and a turntable provided below the furnace door and connected to the driving end of the driving mechanism, wherein the bottom of the turntable is provided with a plurality of locking mechanisms for loading battery cells to be coated, wherein the locking mechanism comprises: a plurality of connecting seats fixedly connected to the bottom of the turntable, and a supporting member provided on the connecting seat, wherein the supporting member is used to carry a tooling clamp loaded with battery cells.

[0005] Optionally, two supporting members are symmetrically provided on the locking mechanism, and one side of each of the two supporting members is provided with a card slot opening to the outward, and the two adjacent card slots on the two adjacent locking mechanisms are arranged opposite to each other, and positioning pins are provided on two opposite sides of the tooling clip. The tooling clip can be connected to the card slots on the two adjacent locking mechanisms through the positioning pins, so as to jointly carry one tooling clip.

[0006] Optionally, one end of the slot is a feed end, the feed end is provided with an opening, and the other end of the slot is closed.

[0007] Optionally, a positioning column is provided in the slot, and a top end of the positioning column exceeds a supporting surface of the slot.

[0008] Optionally, the locking mechanism also includes a transmission mechanism, the transmission mechanism and the two supporting members are rotatably connected to the top surface and two side surfaces of the connecting seat respectively, and a first bevel gear is provided on one end of one of the supporting members, and a second bevel gear is provided on the end of the transmission mechanism close to the first bevel gear, which is vertically meshed with the first bevel gear, and a special-shaped gear is provided at the other end of the transmission mechanism, and the special-shaped gear is slidably or meshedly connected to the limiting component provided on the furnace door.

[0009] Optionally, the limiting component includes a limiting platform and a stop pin arranged at the bottom of the furnace door, the lower end of the stop pin extends above the special-shaped gear, and the outer cylindrical surface of the limiting platform is slidably or meshingly connected to the transmission surface of the special-shaped gear, wherein the outer cylindrical surface includes at least one smooth surface and a first tooth surface, and the transmission surface includes a straight surface and a second tooth surface, the straight surface and the smooth surface slide together, and the first tooth surface and the second tooth surface are in meshing transmission contact, and the stop pin is arranged between the first tooth surface and the axis of the special-shaped gear, and is used to start the rotation of the special-shaped gear to mesh the first tooth surface with the second tooth surface.

[0010] Optionally, positioning pins are provided on two opposite sides of the tooling clamp, and the positioning pins on the two opposite sides are engaged with the slots of the carriers on the two locking mechanisms.

[0011] Optionally, one end of the slot is open outward and the other end is closed, and the open end is a feeding end.

[0012] On the other hand, the present application provides a battery cell evaporation furnace, comprising any one of the above-mentioned battery cell loading furnace covers, wherein the turntable of the battery cell loading furnace cover is circumferentially equipped with a plurality of tooling clamps carrying battery cells, and further comprising a furnace body, a vacuum pumping mechanism and an evaporation machine, wherein the battery cell loading furnace cover is covered on the top of the furnace body, the vacuum pumping mechanism is used to vacuum the inside of the furnace body, and the evaporation machine is used to emit evaporation particles to the tooling clamps on the turntable.

[0013] Optionally, a partition is provided in the furnace body, a channel is provided on the partition, the evaporation machine is provided below the channel, and the evaporation machine is facing the channel to coat the battery cells in the fixture clamp above the channel.

[0014] Optionally, a heating component is provided above the partition, and the heating component is located below the fixture clamp.

[0015] Optionally, a sealing structure is provided on the furnace door, and the sealing structure enables the furnace door to be sealed and connected to the furnace body.

[0016] The technical solution provided by the present invention is to set the furnace door of the evaporation furnace used for evaporating the surface or cut surface of the battery cell as a carrier for carrying the battery cells, and load several battery cell groups that have been placed in the fixture clamps onto a turntable provided at the bottom of the furnace door through a locking mechanism. The turntable is rotatably connected to the furnace door, and the driving mechanism drives the turntable to rotate, and the fixture clamps on the turntable are rotated to the same position in turn, and the battery cell groups are loaded and unloaded in cooperation with the external mechanism. It only needs to be docked with the external mechanism at the same work station to complete the loading and unloading steps of the battery cell group on the furnace cover, which simplifies the process steps of loading and unloading materials and improves the efficiency of loading and unloading materials.

[0017] The present application proposes a cell evaporation furnace, which adopts the above-mentioned cell loading furnace cover. Inside the evaporation furnace, the tooling clamp is fixed on the turntable of the cell loading furnace cover. The cell loading furnace cover cooperates with the evaporation machine to rotate the tooling clamp fixed on the turntable, so that the coating thickness is uniform, thereby improving the quality of the cell passivation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0019] Figure 1 This is a structural diagram of a battery cell loading furnace cover proposed in the present invention;

[0020] Figure 2 This is a schematic structural diagram of the locking mechanism in the present utility model;

[0021] Figure 3 It is a front view schematic diagram of the locking mechanism in the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the tooling clamp for loading a battery pack in the present invention;

[0023] Figure 5 This is a cross-sectional view of the battery cell loading furnace cover in the present invention;

[0024] Figure 6 for Figure 5 A top view of the cooperation between the special-shaped gear and the limiting component;

[0025] Figure 7 This is a structural schematic diagram of a battery cell evaporation furnace proposed by the utility model.

[0026] Wherein, the accompanying drawings are marked as follows:

[0027] 100, fixture clamp; 101, positioning pin; 1, furnace door; 11, position limiting platform; 111, first toothed surface;

[0028] 112. Smooth surface; 12. Stop pin; 2. Driving mechanism; 3. Turntable; 4. Locking mechanism; 41. Connecting seat; 42. Carrying member; 421. Positioning column; 422. Slot; 43. Transmission mechanism; 431. Second bevel gear; 432. Special-shaped gear; 4321. Straight surface; 4322. Second gear surface; 4323. Stop column; 44. First bevel gear; 5. Furnace body; 6. Vacuuming mechanism; 7. Partition; 8. Vapor deposition machine; 9. Heating assembly. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] 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.

[0031] In the first aspect, Figure 1 、 Figure 2 As shown, the utility model provides a battery cell loading furnace cover, including a furnace door 1, a driving mechanism 2, and a turntable 3 provided below the furnace door 1 and connected to the driving end of the driving mechanism 2. The bottom of the turntable 3 is also provided with a plurality of locking mechanisms 4 for loading battery cells to be coated, wherein the locking mechanism 4 includes: a plurality of connecting seats 41 fixedly mounted on the turntable 3, and a bearing member 42 provided on the connecting seat 41, the bearing member 42 is used to position a fixture 100 for carrying battery cells, the fixture 100 exposes the coating surface of the battery cell so that the coating surface faces downward, the fixture 100 carrying the battery cell is hung on the bottom of the turntable 3, and the driving mechanism 2 drives the turntable 3 to rotate. The dynamic turntable 3 rotates. On the one hand, when the battery cells mounted on the turntable 3 are passivated and coated, the driving mechanism 2 simultaneously drives the turntable 3 to rotate, so that the battery cells fixed at the bottom of the turntable 3 can form a uniform film; on the other hand, the tooling clips 100 carrying the battery cells are rotated to the same side of the furnace door 1 by the driving mechanism 2 in sequence, and the battery cell materials will be loaded and unloaded at the same position. It is only necessary to rotate the turntable 3 in coordination with the driving mechanism 2 to load the tooling clips 100 containing the battery cells on the locking mechanism 4 at the bottom of the turntable 3 in sequence to complete the loading of the tooling clips. After the loading is completed, the furnace cover filled with the tooling clips 100 for the battery cells is moved to the passivation furnace for passivation.

[0032] In some embodiments, as Figure 2 、 Figure 3 As shown, there are two supporting members 42 on the locking mechanism 4, and a card slot 422 opening outward is provided on one side of the two supporting members 42. The card slots 422 on the two adjacent locking mechanisms 4 are arranged opposite to each other, and positioning pins 101 are provided on the two opposite sides of the tooling clip 100. The positioning pins 101 are limitedly connected with the card slots 422 on the two adjacent locking mechanisms 4. The two relatively arranged supporting members 42 jointly carry a tooling clip 100, and the tooling clip 100 is restricted in the supporting member 42 of the locking mechanism 4 by the positioning pins 101 thereon.

[0033] In addition, one end of the card slot 422 is a feeding end, which is provided with an opening, and the other end is a closed end, with the end opening outwardly facing the feeding side, and is used for loading and unloading the fixture clamp 100 carrying the battery cells on the turntable 3. Specifically, when it is necessary to load and unload materials on the turntable 3, the card slot 422 of the carrier 42 is arranged horizontally, with the open end facing the loading and unloading side, and the fixture clamp 100 is placed into the carrier 42 between the two locking mechanisms 4 by an external mechanism, so that the positioning pin 101 on the fixture clamp 100 is placed from the feeding end of the carrier 42 and pushed toward the closed end of the card slot 422. The positioning pin 101 is restricted in the card slot 422, thereby installing and positioning the fixture clamp 100 in the carrier 42 of the locking mechanism 4. The method of loading and unloading materials is simple, and the efficiency of material loading and unloading is improved.

[0034] Preferably, a positioning post 421 is provided at one end of the slot 422, the top of which is higher than the bottom of the slot 422. The positioning pin 101 on the fixture 100 enters the slot 422 and passes through the positioning post 421. The top of the positioning post 421 confines the positioning pin 101 within the slot 422, preventing the fixture 100 from sliding out of the slot 422 when the turntable 3 rotates. It should be noted that the end of the positioning post 421 is configured as a ball head, which facilitates the positioning pin 101 to smoothly pass over the end of the positioning post 421 so that the positioning pin 101 is retained in the slot 422 by the positioning post 421.

[0035] In some embodiments, the end of the positioning column 421 can also be configured as a spring ball that can roll and elastically float, so that the positioning pin 101 can easily pass through the positioning column 421 to be confined in the slot 422 .

[0036] In some embodiments, reference Figure 2 、 Figure 3The locking mechanism 4 also includes a transmission mechanism 43, which is rotatably connected to the top surface and two side surfaces of the connecting seat 41 with the two bearing members 42. The top surface and the two side surfaces are three adjacent surfaces, and one end of one of the bearing members 42 is provided with a first bevel gear 44. The transmission mechanism 43 is provided with a second bevel gear 431 that is vertically meshed with the first bevel gear 44 at one end close to the first bevel gear 44, and a special-shaped gear 432 is provided at the other end of the transmission mechanism 43. A limiting component is provided on the furnace door 1, and the special-shaped gear 432 extends out of the connecting seat 41 and is slidably or meshedly connected to the limiting component on the furnace door 1. When the driving mechanism 2 rotates the turntable 3, the limiting component is slidably connected or gear-meshingly contacted with the special-shaped gear 432. When the locking mechanism 4 rotates with the turntable 3, the special-shaped gear on the transmission mechanism 43 The wheel 432 cooperates with the limiting component so that the special-shaped gear 432 is driven to rotate around its axis, driving the second bevel gear 431 to rotate, thereby driving the first bevel gear 44 meshing with the second bevel gear 431 to rotate. At the same time, the supporting member 42 connected to the first bevel gear 44 follows the rotation. The supporting member 42 connected to the first bevel gear 44 serves as an active supporting member for driving the tooling clamp 100 to flip. The supporting member 42 on another locking mechanism 4 that is arranged opposite to the active supporting member and cooperates to carry the same tooling clamp 100 is a driven supporting member. One end of the driven supporting member is rotatably connected to the connecting seat 41 through a bearing; when the active supporting member is driven to rotate by the first bevel gear 44, the driven supporting member also rotates accordingly, so that the tooling clamp 100 carried between the two supporting members 42 can rotate.

[0037] In this specific embodiment, referring to Figure 3 、 Figure 4 As shown, the battery cell loaded in the fixture 100 may have two opposite cut surfaces. For example, the whole battery cell is cut into multiple pieces, or the cut surfaces of the battery cell are passivated directly after the wafer battery cell is cut. Both cut surfaces can be coated. The same fixture 100 needs to be turned over and turned toward the side where the vapor deposition particles are emitted, so that the battery cell with two cut surfaces can be vapor-deposited in the same vapor deposition furnace at one time. This simplifies the passivation process of the battery cell with the vapor deposition cut surface and further improves the efficiency of the battery cell passivation.

[0038] In another embodiment, referring to Figure 5 、 Figure 6As shown, the limiting component includes a limiting platform 11 arranged at the bottom of the furnace door 1 and a stop pin 12 extending to the top of the special-shaped gear 432, and the outer cylindrical surface of the limiting platform 11 is slidably or meshingly connected with the transmission surface of the special-shaped gear 432, wherein the outer cylindrical surface of the limiting platform 11 includes at least one smooth surface 112 and a first toothed surface 111, and the transmission surface includes a straight surface 4321 and a second toothed surface 4322; when the material in the fixture 100 does not need to be flipped, the straight surface 4321 on the special-shaped gear 432 slides with the sliding surface on the limiting platform 11, and when the material in the fixture 100 needs to be flipped, the fixture 100 that needs to be flipped on the turntable 3 is rotated to the first toothed surface 111 Position, the special-shaped gear 432 connected to the fixture 100 is in contact with the first tooth surface 111, and the stop pin 12 arranged between the first tooth surface 111 and the axis of the special-shaped gear 432 drives the special-shaped gear 432 to rotate toward the first tooth surface 111, so as to engage the second tooth surface 4322 on the special-shaped gear 432 with the first tooth surface 111 on the limit platform 11, thereby driving the transmission mechanism 43 to rotate, driving the supporting member 42 connected to the first bevel gear 44 to rotate 90 degrees, and the fixture 100 limited on the supporting member 42 is rotated 90 degrees to rotate the second surface to be coated of the battery cell on the fixture 100 to the side where the vapor-deposited particles are emitted.

[0039] Specifically, a stop column 4323 is provided above the special-shaped gear 432, and the stop pin 12 provided on the furnace door 1 extends to one side of the stop column 4323. When the special-shaped gear 432 needs to be rotated, the stop column 4323 on the special-shaped gear 432 is moved by the stop pin 12 fixed on the furnace door 1 while the turntable 3 rotates, so that the second tooth surface 4322 of the special-shaped gear 432 cooperates with the first tooth surface 111 on the limit platform 11, and is therefore driven to rotate by the first tooth surface 111. When the meshing surfaces of the first tooth surface 111 and the second tooth surface 4322 rotate to the extreme end, the flipping of the tooling clamp 100 is completed, and the turntable 3 continues to rotate. The straight surface 4321 of the special-shaped gear 432 cooperates with the smooth surface 112 on the limit platform 11, and the tooling clamp 100 is kept in the flipped position.

[0040] Preferably, two straight surfaces 4321 are symmetrically provided on the special-shaped gear 432, two second tooth-shaped surfaces 4322 are symmetrically provided, and two blocking columns 4323 are also symmetrically provided. The symmetrically arranged straight surfaces 4321 and second tooth-shaped surfaces 4322 can enable the special-shaped gear 432 and the first tooth-shaped surface 111 and the smooth surface 112 on the furnace door 1 to continuously cooperate with the flipping fixture 100.

[0041] On the other hand, Figure 7As shown, the present application also provides a battery cell evaporation furnace, which includes any one of the above-mentioned battery cell loading furnace covers, and also includes a furnace body 5 for accommodating battery cell fixtures 100 and a turntable 3 and a vacuuming mechanism 6 for evacuating the interior of the furnace body 5, and an evaporation machine 8 for emitting evaporation particles. The battery cell loading furnace cover loaded with a plurality of fixtures 100 is covered on the top of the furnace body 5. After covering, the driving mechanism 2 rotates the turntable 3 and the fixtures 100 loaded on the turntable 3, so that the cut surface of the battery cell on the fixture 100 is set downward, and the evaporation machine 8 is set at the lower part of the fixture 100 in the furnace body 5, and emits evaporation particles toward the cut surface of the battery cell to perform passivation coating on the cut surface of the battery cell.

[0042] In some embodiments, a partition 7 is provided in the furnace body 5, and the battery cell group loaded on the loading furnace cover is placed on the upper part of the partition 7. A group of battery cells is loaded in each fixture 100, and a channel is provided on the partition 7. The evaporation machine 8 is arranged opposite the channel and coats the battery cell group placed in the fixture 100 above the channel. The coated surface of the battery cell group faces the channel mouth, so that the evaporation particles of the evaporation machine 8 fly through the channel to the coating surface of the battery cell facing the channel. The position facing the emission outlet of the evaporation machine 8 is the area with the most concentrated density of evaporation particles. Therefore, the emission outlet of the evaporation machine 8 is arranged opposite to the surface to be coated of the battery cell, and the evaporation particles outside the channel are isolated by the partition 7, so that the evaporation particles emitted by the evaporation machine 8 with concentrated and uniform density are attached to the coating surface of the battery cell through the channel, so that the thickness of the coating layer on the coating surface of the battery cell is uniform, thereby improving the quality of the passivation layer of the battery cell.

[0043] In some embodiments, a heating component 9 is further provided above the partition 7. The heating component 9 heats the interior of the furnace body 5. The purpose of heating the interior of the furnace body 5 is to, on the one hand, preheat the cavity of the furnace body 5 in advance, accelerate the evaporation rate of the plating target material by the evaporator 8, and improve the coating efficiency of the battery cell in the evaporation furnace; on the other hand, it can heat the battery cell in the fixture clamp, so that the air and moisture inside the coating material are more conducive to being extracted, and no impurities remain inside the shell, thereby accelerating the rate at which the shell is vacuumed.

[0044] In some embodiments, a sealing structure is further provided on the furnace door 1, which seals the furnace door 1 and the furnace body 5. Specifically, the sealing structure includes flexible structures such as sealing rings and rubber gaskets. The flexible structure is elastically pressed against the upper connection between the furnace door 1 and the furnace body 5, so that the turntable 3 on the furnace door 1 and the battery cell group loaded on the turntable 3 are all accommodated and sealed in the furnace body 5, so that the vacuum mechanism 6 can quickly vacuum the inside of the furnace body 5.

[0045] 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 exemplary embodiments described above, 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, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A battery cell loading furnace cover, characterized in that: include: A furnace door (1), a drive mechanism (2), and a turntable (3) provided below the furnace door (1) and connected to the drive end of the drive mechanism (2); a plurality of locking mechanisms (4) for loading battery cells to be coated are provided at the bottom of the turntable (3); wherein the locking mechanisms (4) include: a plurality of connecting seats (41) fixedly connected below the turntable (3); and a supporting member (42) provided on the connecting seat (41); the supporting member (42) is used to carry a fixture clamp (100) loaded with battery cells.

2. The cell loading furnace cover according to claim 1, characterized in that: Two bearing members (42) are symmetrically provided on the locking mechanism (4), and one side of each of the two bearing members (42) is provided with a card slot (422) opening outward, and two adjacent card slots (422) on two adjacent locking mechanisms (4) are arranged opposite to each other, and a positioning pin (101) is provided on the tooling clip (100), and the tooling clip (100) can be connected to the card slots (422) on two adjacent locking mechanisms (4) through the positioning pin (101) to jointly carry one tooling clip (100).

3. The cell loading furnace cover according to claim 2, characterized in that: One end of the card slot (422) is a feed end, and the feed end is provided with an opening, and the other end of the card slot (422) is closed.

4. The cell loading furnace cover according to claim 2, characterized in that: A positioning column (421) is provided in the slot, and the top end of the positioning column (421) exceeds the supporting surface of the slot (422).

5. The battery cell loading furnace cover according to claim 1, characterized in that: The locking mechanism (4) further comprises a transmission mechanism (43), wherein the transmission mechanism (43) and the two bearing members (42) are rotatably connected to the top surface and two side surfaces of the connecting seat (41), and a first bevel gear (44) is provided on one end of one of the bearing members (42), and a second bevel gear (431) vertically meshed with the first bevel gear (44) is provided on one end of the transmission mechanism (43) close to the first bevel gear (44), and the other end of the transmission mechanism (43) is provided with a special-shaped gear (432), and the special-shaped gear (432) is connected to a limiting component provided on the furnace door (1) by sliding or meshing transmission.

6. The battery cell loading furnace cover according to claim 5, characterized in that: The limiting component comprises a limiting platform (11) and a stop pin (12) arranged at the bottom of the furnace door (1), the lower end of the stop pin (12) extends above the special-shaped gear (432), the outer cylindrical surface of the limiting platform (11) is slidably or meshingly connected to the transmission surface of the special-shaped gear (432), wherein the outer cylindrical surface includes at least one smooth surface (112) and a first toothed surface (111), and the transmission surface includes a straight surface (4321) and a second toothed surface (111). The toothed surface (4322), the straight surface (4321) and the smooth surface (112) are in sliding cooperation, the first toothed surface (111) and the second toothed surface (4322) are in meshing transmission contact, and the stop pin (12) is arranged between the first toothed surface (111) and the axis of the special-shaped gear (432), and is used to start the rotation of the special-shaped gear (432) to mesh the first toothed surface (111) with the second toothed surface (4322).

7. A battery cell evaporation furnace, characterized in that: The invention comprises a cell loading furnace cover as described in any one of claims 1 to 6, wherein a plurality of fixture clamps (100) carrying cell panels are installed on the circumference of a turntable (3) of the cell loading furnace cover, and further comprises a furnace body (5), a vacuum pumping mechanism (6) and a vapor deposition machine (8), wherein the cell loading furnace cover is covered on the top of the furnace body (5), the vacuum pumping mechanism (6) is used to vacuum the interior of the furnace body (5), and the vapor deposition machine (8) is used to emit vapor deposition particles to the fixture clamps (100) on the turntable (3).

8. The cell evaporation furnace according to claim 7, characterized in that: A partition (7) is provided in the furnace body (5), a channel is provided on the partition (7), the vapor deposition machine (8) is provided below the channel, and the vapor deposition machine (8) is directly opposite the channel to coat the battery cell in the fixture (100) above the channel.

9. The cell evaporation furnace according to claim 8, characterized in that: A heating component (9) is provided above the partition (7), and the heating component (9) is located at the bottom of the fixture clamp (100).

10. The cell evaporation furnace according to claim 7, characterized in that: The furnace door (1) is provided with a sealing structure, and the sealing structure enables the furnace door (1) to be sealed and connected to the furnace body (5).

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