Battery vacuumizing device

Abstract

The utility model provides a battery vacuum-pumping device, including tray, chassis and vacuum-pumping portion, tray includes tray body and set up the leg of tray body, tray body is used for placing battery, chassis has bearing area, a plurality of tray is stacked on the bearing area, every two adjacent tray body in the bearing area is separated by the leg, and the vacuum-pumping portion is located in the tray body. The vacuumizing part is used for vacuumizing the batteries in all the trays located in the bearing area. In the scheme, the plurality of trays are stacked, and the adjacent tray bodies are separated through the supporting legs, so that the space for air to flow is formed between the adjacent tray bodies, and the vacuumizing part can be used for vacuumizing batteries in all the trays in the bearing area at the same time; and the time of vacuumizing operation is obviously shortened, and the production efficiency of the battery is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and more specifically, to a battery vacuuming device. Background Technology

[0002] During the production of button cells, electrolyte needs to be injected. To ensure the electrolyte fully penetrates the battery, it is necessary to vacuum the cells and allow them to stand. Batteries are typically arranged in trays. However, when existing trays are stacked, the upper and lower surfaces of the trays are in contact, and the gap between the trays is very small, hindering airflow. Therefore, vacuuming the batteries in stacked trays is extremely ineffective. Current vacuuming methods involve vacuuming the batteries in each tray individually, and this process requires a period of rest. This current vacuuming process is time-consuming, resulting in low battery production efficiency. Utility Model Content

[0003] This invention provides a battery vacuuming device to solve the problems of long battery vacuuming operation time and low battery production efficiency in the prior art.

[0004] To solve the above problems, this utility model provides a battery vacuuming device, including a tray, a chassis, and a vacuuming unit. The tray includes a tray body and legs disposed on the tray body. The tray body is used to place batteries. The chassis has a bearing area on which multiple trays are stacked. Adjacent tray bodies in the bearing area are separated by the legs. The vacuuming unit is used to vacuum the batteries in all the trays located in the bearing area.

[0005] Furthermore, the outrigger includes a thicker column section and a thinner column section, wherein the radial dimension of the thicker column section is larger than the radial dimension of the thinner column section; wherein,

[0006] The first end of the thick column is connected to the first side of the disk body, the second end of the thick column is connected to the thin column, the second side of the disk body has a positioning hole, the thin column is inserted into the positioning hole of the adjacent disk body below it, and the second end of the thick column abuts against the adjacent disk body below it.

[0007] Alternatively, the second end of the thick column segment is connected to the second side of the disc body, the first end of the thick column segment is connected to the thin column segment, the first side of the disc body has a positioning hole, the thin column segment is inserted into the positioning hole of the adjacent disc body above it, and the first end of the thick column segment abuts against the adjacent disc body above it.

[0008] Furthermore, the disk body is a rectangular plate structure, with both ends of the disk body being non-placement areas, and the area between the two non-placement areas being the placement area, which is used to place the battery. Each non-placement area is provided with at least two support legs, and the non-placement area has a weight reduction groove with reinforcing ribs inside.

[0009] Furthermore, the battery placed inside the disc is a button cell, the distance between two adjacent discs is 15mm to 25mm, and the thickness of the disc is 10mm to 20mm.

[0010] Furthermore, the disc has multiple grooves, each for placing a battery; the tray is a one-piece structure, and the tray material is fiberglass.

[0011] Furthermore, the chassis has multiple load-bearing areas, and the battery vacuuming device has an operating station and a vacuuming station. The chassis is movably configured to switch the load-bearing area to the operating station or the vacuuming station. The operating station is the space for injecting electrolyte into the battery, and the vacuuming unit is used to vacuum the battery in the load-bearing area located at the vacuuming station.

[0012] Furthermore, the chassis has two load-bearing areas, one of which is located at the operating position and the other at the vacuuming position; the battery vacuuming device also includes a drive unit that drives the chassis to rotate to switch the positions of the two load-bearing areas.

[0013] Furthermore, the vacuuming unit includes a bracket, a lifting assembly, a sealing cover, and a vacuuming assembly. The bracket is fixed above the vacuuming station, the lifting assembly is installed on the bracket, and the sealing cover is installed on the lifting assembly. The lifting assembly drives the sealing cover to rise and fall. The sealing cover is used to cover or avoid multiple trays located at the vacuuming station. When the sealing cover covers multiple trays, the vacuuming assembly evacuates the space inside the sealing cover.

[0014] Furthermore, the lifting assembly includes a lifting cylinder and a guide column. The lifting cylinder drives the sealing cover to rise and fall, and the lower end of the guide column is fixedly connected to the sealing cover. The guide column passes through the guide sleeve on the bracket.

[0015] The chassis includes a base plate and multiple support plates fixed on the base plate. Each support plate has a load-bearing area and a sealing groove surrounding the load-bearing area. A sealing ring is provided in the sealing groove. When the sealing cover covers multiple pallets, the lower end of the sealing cover abuts against and presses the sealing ring against the support plate.

[0016] Furthermore, the battery vacuuming device also includes a positioning unit, which is located in the bearing area of ​​the chassis and is used to position the tray placed in the bearing area.

[0017] Furthermore, the positioning part includes a first positioning structure and a second positioning structure. The first positioning structure positions the pallet in a first direction, and the second positioning structure positions the pallet in a second direction. There is an angle between the first direction and the second direction.

[0018] Furthermore, the first positioning structure includes a first fixed plate, a first cylinder, and a first movable plate. The first fixed plate is fixed to the chassis, and the first cylinder drives the first movable plate to move closer to or away from the first fixed plate to clamp or avoid the pallet in a first direction; and / or,

[0019] The second positioning structure includes a second fixed plate, a second cylinder, and a second movable plate. The second fixed plate is fixed to the chassis, and the second cylinder drives the second movable plate to move closer to or away from the second fixed plate in order to clamp the pallet or avoid the pallet in a second direction.

[0020] Furthermore, the positioning unit also includes a position sensor and a controller. The position sensor, the first positioning structure, and the second positioning structure are all electrically connected to the controller. The position sensor is used to detect whether the pallet is placed in the bearing area. When the position sensor detects that the pallet is placed in the bearing area, the controller controls the first positioning structure and the second positioning structure to operate in order to position the pallet.

[0021] This invention provides a battery vacuuming device, comprising a tray, a chassis, and a vacuuming unit. The tray includes a tray body and supporting legs disposed within the tray body. Batteries are placed within the tray body. The chassis has a support area on which multiple trays are stacked. Adjacent tray bodies within the support area are separated by the supporting legs. The vacuuming unit is used to vacuum all the batteries in all the trays located within the support area. In this design, by stacking multiple trays and separating adjacent tray bodies by supporting legs, airflow is provided between adjacent tray bodies. The vacuuming unit can simultaneously vacuum all the batteries in all the trays located within the support area. Compared to existing methods that vacuum each tray separately, this significantly shortens the vacuuming operation time and improves battery production efficiency. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of the battery vacuuming device provided in an embodiment of the present invention is shown;

[0024] Figure 2 It shows Figure 1 A diagram illustrating the stacking of multiple trays;

[0025] Figure 3 It shows Figure 1 A schematic diagram of the lower side of the tray in the image;

[0026] Figure 4 It shows Figure 3A schematic diagram of the upper side of the tray in the middle;

[0027] Figure 5 It shows Figure 1 A schematic diagram of the positioning part.

[0028] The above figures include the following reference numerals:

[0029] 10. Tray; 11. Tray body; 111. Positioning hole; 112. Weight reduction groove; 113. Reinforcing rib; 114. Groove; 12. Support leg; 121. Thick column section; 122. Thin column section;

[0030] 20. Chassis; 21. Base plate; 22. Support plate; 221. Sealing groove;

[0031] 30. Vacuuming unit; 31. Bracket; 32. Lifting assembly; 321. Lifting cylinder; 322. Guide column; 323. Guide sleeve; 33. Sealing cover;

[0032] 40. Drive unit;

[0033] 50. Positioning unit; 51. First fixed plate; 52. First cylinder; 53. First movable plate; 54. Second fixed plate; 55. Second cylinder; 56. Second movable plate; 57. Position sensor. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] like Figures 1 to 5 As shown, an embodiment of this utility model provides a battery vacuuming device, including a tray 10, a base 20, and a vacuuming section 30. The tray 10 includes a tray body 11 and support legs 12 disposed on the tray body 11. Batteries are placed inside the tray body 11. The base 20 has a carrying area, on which multiple trays 10 are stacked. Adjacent tray bodies 11 within the carrying area are separated by the support legs 12. The vacuuming section 30 is used to vacuum the batteries in all the trays 10 located in the carrying area. "Multiple" refers to two or more trays.

[0036] In this scheme, multiple trays 10 are stacked, and adjacent trays 11 are separated by support legs 12. This provides space for airflow between adjacent trays 11, and the vacuum unit 30 can simultaneously vacuum all the batteries in all the trays 10 located in the carrying area. Compared with the existing method of vacuuming each tray separately, this significantly shortens the vacuuming operation time and improves the battery production efficiency.

[0037] The battery can be a button cell or other types of battery. By performing a vacuuming operation, the electrolyte injected into the battery can be fully immersed inside the battery.

[0038] like Figure 2 and Figure 3 As shown, the support leg 12 includes a thick column section 121 and a thin column section 122. The radial dimension of the thick column section 121 is larger than that of the thin column section 122. The first end of the thick column section 121 is connected to the first side of the disc body 11, and the second end of the thick column section 121 is connected to the thin column section 122. The second side of the disc body 11 has a positioning hole 111. The thin column section 122 is inserted into the positioning hole 111 of the disc body 11 below it, and the second end of the thick column section 121 abuts against the disc body 11 below it.

[0039] In this way, the positioning of the upper and lower trays 10 is achieved by the cooperation of the thin column segment 122 and the positioning hole 111. The lower end of the thick column segment 121 abuts against the plate body 11 below it, thus separating the plate bodies 11 in the upper and lower trays 10. This creates space between the plate bodies 11 in the upper and lower trays 10, allowing air to flow, which is beneficial for vacuuming when multiple trays 10 are stacked.

[0040] Alternatively, in another embodiment not shown, the second end of the thick column segment 121 is connected to the second side of the disc body 11, the first end of the thick column segment 121 is connected to the thin column segment 122, the first side of the disc body 11 has a positioning hole 111, the thin column segment 122 is inserted into the positioning hole 111 of the adjacent disc body 11 above it, and the first end of the thick column segment 121 abuts against the adjacent disc body 11 above it. In this embodiment, the support leg 12 is located above the disc body 11 in the tray 10 it is in, and can still serve the purpose of separating two adjacent disc bodies 11.

[0041] like Figure 3 As shown, the disk body 11 is a rectangular plate structure. Both ends of the disk body 11 in the length direction are non-placement areas, and the area between the two non-placement areas is the placement area. The placement area is used to place multiple batteries. Each non-placement area is provided with at least two support legs 12. The non-placement area has a weight reduction groove 112, and the weight reduction groove 112 has a reinforcing rib 113.

[0042] No battery needs to be placed in the non-placement area; therefore, placing the support leg 12 in the non-placement area does not affect the placement of the battery in the placement area. Furthermore, the weight-reduction groove 112 in the non-placement area reduces material usage and lowers costs. The reinforcing rib 113 prevents a decrease in structural strength caused by the weight-reduction groove 112.

[0043] Furthermore, the batteries placed inside the disc 11 are button cells, and the distance between two adjacent discs 11 is 15mm to 25mm, for example, 20mm, to allow sufficient space for smooth airflow. The thickness of the disc 11 is 10mm to 20mm to ensure structural strength and to accommodate the button cells.

[0044] like Figure 4 As shown, the disc body 11 has multiple grooves 114, each groove 114 is used to place a battery, which can improve production efficiency; the tray 10 is an integral structure, which improves structural strength, and the material of the tray 10 is glass fiber, which is high in strength and corrosion resistant.

[0045] like Figure 1 As shown, the chassis 20 has multiple carrying areas, and the battery vacuuming device has an operating station and a vacuuming station. The chassis 20 is movably configured to switch the carrying areas to the operating station or the vacuuming station. The operating station is the space for injecting electrolyte into the battery, and the vacuuming unit 30 is used to vacuum the battery in the carrying area located in the vacuuming station.

[0046] With the above setup, while vacuuming the batteries in multiple trays 10 in the carrying area of ​​the vacuuming station, the operations of placing trays 10, placing batteries on trays 10, and injecting electrolyte into the batteries can be performed in the carrying area of ​​the operating station. In other words, both stations can operate simultaneously. Furthermore, after vacuuming is complete, switching the position of the carrying area allows for alternating operations. Compared to having only one station, there is no need to wait for vacuuming to complete before continuing operations, thus improving operational efficiency.

[0047] Specifically, the chassis 20 has two load-bearing areas. One load-bearing area is located at the operating station, and the other load-bearing area is located at the vacuuming station. This ensures that both the operating station and the vacuuming station have load-bearing areas, so that the operations of injecting electrolyte and vacuuming can be performed simultaneously.

[0048] The battery vacuuming device also includes a drive unit 40, which drives the chassis 20 to rotate, thereby switching the positions of the two support areas. Continuous production is achieved through the cyclical switching of the support area positions. The drive unit 40 can be a drive structure such as a cam divider.

[0049] like Figure 1As shown, the vacuum unit 30 includes a bracket 31, a lifting assembly 32, a sealing cover 33, and a vacuum assembly. The bracket 31 is fixed above the vacuum station, the lifting assembly 32 is installed on the bracket 31, and the sealing cover 33 is installed on the lifting assembly 32. The lifting assembly 32 drives the sealing cover 33 to rise and fall. The sealing cover 33 is used to cover or avoid multiple trays 10 located at the vacuum station. When the sealing cover 33 covers multiple trays 10, the vacuum assembly evacuates the space inside the sealing cover 33.

[0050] When it is necessary to move the tray 10, the sealing cover 33 avoids the tray 10. During vacuuming, the lifting component 32 drives the sealing cover 33 to descend, and the sealing cover 33 covers the multiple trays 10 located at the vacuuming station. Then, the vacuuming component evacuates the space inside the sealing cover 33, thereby creating a vacuum environment inside the sealing cover 33, which is conducive to removing air from the battery.

[0051] Specifically, the lifting assembly 32 includes a lifting cylinder 321 and a guide column 322. The lifting cylinder 321 drives the sealing cover 33 to rise and fall. The lower end of the guide column 322 is fixedly connected to the sealing cover 33, and the guide column 322 passes through the guide sleeve 323 on the bracket 31. The cylinder drive is simple in structure, and the guide column 322 ensures the smooth lifting and accurate positioning of the sealing cover 33.

[0052] The chassis 20 includes a base plate 21 and multiple support plates 22 fixed to the base plate 21. Each support plate 22 has a bearing area and a sealing groove 221 surrounding the bearing area. A sealing ring is disposed within the sealing groove 221. When the sealing cover 33 covers the multiple trays 10, the lower end of the sealing cover 33 abuts against and presses the sealing ring against the support plate 22. Through the above arrangement, the sealing effect between the sealing cover 33 and the support plate 22 is improved, thereby ensuring the vacuuming effect.

[0053] Furthermore, such as Figure 1 As shown, the battery vacuuming device also includes a positioning part 50, which is disposed in the bearing area of ​​the chassis 20. The positioning part 50 is used to position the tray 10 placed in the bearing area. By positioning the tray 10 placed in the bearing area by the positioning part 50, multiple trays 10 stacked in the bearing area can be accurately positioned. This is beneficial for cooperation with the vacuuming part 30, which is used to create a vacuum.

[0054] In this solution, the picking up and placing of the tray 10 and the injection of electrolyte can be carried out manually or automatically. By accurately defining the position of the tray 10, it is easy to cooperate with structures such as robotic arms to achieve automated operation.

[0055] Specifically, the positioning part 50 includes a first positioning structure and a second positioning structure. The first positioning structure positions the pallet 10 in a first direction, and the second positioning structure positions the pallet 10 in a second direction. An angle exists between the first and second directions. By using the two positioning structures, the pallet 10 can be positioned in two different directions, thus ensuring that the pallet 10 has an accurate position after being placed in the carrying area. The first and second directions can be two mutually perpendicular horizontal directions.

[0056] Specifically, such as Figure 5 As shown, the first positioning structure includes a first fixed plate 51, a first cylinder 52, and a first movable plate 53. The first fixed plate 51 is fixed to the chassis 20. The first cylinder 52 drives the first movable plate 53 to move closer to or away from the first fixed plate 51 to clamp the pallet 10 or avoid the pallet 10 in a first direction. And / or, the second positioning structure includes a second fixed plate 54, a second cylinder 55, and a second movable plate 56. The second fixed plate 54 is fixed to the chassis 20. The second cylinder 55 drives the second movable plate 56 to move closer to or away from the second fixed plate 54 to clamp the pallet 10 or avoid the pallet 10 in a second direction.

[0057] Thus, the first movable plate 53 can abut the pallet 10 against the first fixed plate 51, thereby positioning the pallet 10 in the first direction. The second movable plate 56 abuts the pallet 10 against the second fixed plate 54, thereby positioning the pallet 10 in the second direction.

[0058] Furthermore, the positioning unit 50 also includes a position sensor 57 and a controller. The position sensor 57, the first positioning structure, and the second positioning structure are all electrically connected to the controller. The position sensor 57 is used to detect whether the tray 10 is placed in the bearing area. When the position sensor 57 detects that the tray 10 is placed in the bearing area, the controller controls the first positioning structure and the second positioning structure to operate in order to position the tray 10. Through the above settings, the automation level of the device is improved.

[0059] The above description is merely an optional embodiment of this solution and is not intended to limit the solution. Various modifications and variations can be made to this solution by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this solution should be included within the scope of protection of this solution.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0062] In the description of this solution, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this solution and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this solution. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this solution.

Claims

1. A battery vacuuming device, characterized in that, The device includes a tray (10), a chassis (20), and a vacuum unit (30). The tray (10) includes a tray body (11) and a support leg (12) disposed on the tray body (11). The tray body (11) is used to place batteries. The chassis (20) has a carrying area on which multiple trays (10) are stacked. Two adjacent tray bodies (11) in the carrying area are separated by the support leg (12). The vacuum unit (30) is used to evacuate the batteries in all the trays (10) located in the carrying area.

2. The battery vacuuming device according to claim 1, characterized in that, The support leg (12) includes a thick column section (121) and a thin column section (122), wherein the radial dimension of the thick column section (121) is larger than the radial dimension of the thin column section (122); wherein, The first end of the thick column segment (121) is connected to the first side of the disk body (11), the second end of the thick column segment (121) is connected to the thin column segment (122), the second side of the disk body (11) has a positioning hole (111), the thin column segment (122) is inserted into the positioning hole (111) of the disk body (11) below it, and the second end of the thick column segment (121) abuts against the disk body (11) below it; Alternatively, the second end of the thick column segment (121) is connected to the second side of the disk body (11), the first end of the thick column segment (121) is connected to the thin column segment (122), the first side of the disk body (11) has a positioning hole (111), the thin column segment (122) is inserted into the positioning hole (111) of the disk body (11) above it, and the first end of the thick column segment (121) abuts against the disk body (11) above it.

3. The battery vacuuming device according to claim 1, characterized in that, The disc body (11) is a rectangular plate structure. Both ends of the disc body (11) in the length direction are non-placement areas, and the area between the two non-placement areas is a placement area. The placement area is used to place the battery. Each non-placement area is provided with at least two legs (12). The non-placement area has a weight reduction groove (112), and the weight reduction groove (112) has a reinforcing rib (113).

4. The battery vacuuming device according to claim 1, characterized in that, The battery placed inside the disc (11) is a type of battery. The distance between two adjacent discs (11) is 15mm to 25mm, and the thickness of the disc (11) is 10mm to 20mm.

5. The battery vacuuming device according to claim 1, characterized in that, The disc body (11) has multiple grooves (114), each groove (114) is used to place a battery; the tray (10) is an integral structure, and the material of the tray (10) is glass fiber.

6. The battery vacuuming device according to claim 1, characterized in that, The chassis (20) has multiple bearing areas, and the battery vacuuming device has an operating station and a vacuuming station. The chassis (20) is movably configured to switch the bearing area to the operating station or the vacuuming station. The operating station is a space for injecting electrolyte into the battery, and the vacuuming unit (30) is used to vacuum the battery in the bearing area located at the vacuuming station.

7. The battery vacuuming device according to claim 6, characterized in that, The chassis (20) has two bearing areas, one of which is located at the operating station and the other is located at the vacuuming station. The battery vacuuming device also includes a drive unit (40), which drives the chassis (20) to rotate to switch the positions of the two bearing areas.

8. The battery vacuuming device according to claim 6, characterized in that, The vacuum unit (30) includes a bracket (31), a lifting assembly (32), a sealing cover (33), and a vacuum assembly. The bracket (31) is fixed above the vacuum station. The lifting assembly (32) is installed on the bracket (31). The sealing cover (33) is installed on the lifting assembly (32). The lifting assembly (32) drives the sealing cover (33) to rise and fall. The sealing cover (33) is used to cover or avoid multiple trays (10) located at the vacuum station. When the sealing cover (33) covers multiple trays (10), the vacuum assembly evacuates the space inside the sealing cover (33).

9. The battery vacuuming device according to claim 8, characterized in that, The lifting assembly (32) includes a lifting cylinder (321) and a guide column (322). The lifting cylinder (321) drives the sealing cover (33) to rise and fall. The lower end of the guide column (322) is fixedly connected to the sealing cover (33). The guide column (322) passes through the guide sleeve (323) on the bracket (31). The chassis (20) includes a base plate (21) and a plurality of support plates (22) fixed on the base plate (21). Each support plate (22) has a bearing area. The support plate (22) has a sealing groove (221) surrounding the bearing area. A sealing ring is provided in the sealing groove (221). When the sealing cover (33) covers the plurality of trays (10), the lower end of the sealing cover (33) abuts against and presses the sealing ring against the support plate (22).

10. The battery vacuuming device according to any one of claims 1 to 9, characterized in that, The battery vacuuming device also includes a positioning part (50), which is disposed in the bearing area of ​​the chassis (20) and is used to position the tray (10) placed in the bearing area.

11. The battery vacuuming device according to claim 10, characterized in that, The positioning part (50) includes a first positioning structure and a second positioning structure. The first positioning structure positions the tray (10) in a first direction, and the second positioning structure positions the tray (10) in a second direction. There is an angle between the first direction and the second direction.

12. The battery vacuuming device according to claim 11, characterized in that, The first positioning structure includes a first fixed plate (51), a first cylinder (52), and a first movable plate (53). The first fixed plate (51) is fixed to the chassis (20). The first cylinder (52) drives the first movable plate (53) to move closer to or away from the first fixed plate (51) to clamp the tray (10) or avoid the tray (10) in the first direction; and / or, The second positioning structure includes a second fixed plate (54), a second cylinder (55), and a second movable plate (56). The second fixed plate (54) is fixed to the chassis (20). The second cylinder (55) drives the second movable plate (56) to move closer to or away from the second fixed plate (54) in the second direction to clamp the pallet (10) or avoid the pallet (10).

13. The battery vacuuming device according to claim 11, characterized in that, The positioning unit (50) further includes a position sensor (57) and a controller. The position sensor (57), the first positioning structure and the second positioning structure are all electrically connected to the controller. The position sensor (57) is used to detect whether the tray (10) is placed in the bearing area. When the position sensor (57) detects that the tray (10) is placed in the bearing area, the controller controls the first positioning structure and the second positioning structure to operate in order to position the tray (10).

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