Battery sealing device and battery sealing method

Abstract

The invention provides a battery sealing device and a battery sealing method.The battery sealing device comprises a rack, a sealing rotary disc assembly and a feeding rotary disc assembly, the sealing rotary disc assembly comprises a first rotary disc and sealing assemblies, the first rotary disc is rotatably arranged on the rack, and the multiple sealing assemblies are arranged in the circumferential direction of the first rotary disc; the sealing assembly comprises a first sealing guide column, a second sealing guide column and a sealing profiling mold which are concentrically arranged, a first accommodating groove for placing a to-be-sealed battery cell is formed between the sealing profiling mold and the second sealing guide column, and the first sealing guide column, the second sealing guide column and the sealing profiling mold are matched to seal the to-be-sealed battery cell; the feeding rotary table assembly comprises a second rotary table and a battery cell feeding assembly, the second rotary table is arranged on one side of the first rotary table, the second rotary table is rotatably arranged on the rack, and the battery cell feeding assembly can push a battery cell to be sealed into the first containing groove for sealing. The problems that an existing battery sealing device is large in deviation and low in precision are solved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery manufacturing equipment, and in particular to a battery sealing device and a battery sealing method. Background Art

[0002] In the existing battery manufacturing process, after injecting electrolyte into the battery, it is necessary to seal the battery injection port to make the battery sealed to ensure the safety of the battery during use.

[0003] If semi-automatic sealing is adopted when sealing the battery, that is, mechanical sealing and manual loading and unloading are adopted, this method has the problems of low loading and unloading efficiency and easy occurrence of safety accidents. In the prior art, a sealing device is usually adopted for automatic sealing. However, the cumulative deviation of the assembly error and processing error of the sealing device in the prior art is large, and the battery end face is prone to unevenness, resulting in low sealing molding accuracy of the battery. Summary of the invention

[0004] The invention aims to solve the problem that the existing battery sealing device has large deviation and low precision, which affects the sealing molding precision of the battery.

[0005] In order to solve the above problems, the present invention provides a battery sealing device, comprising:

[0006] frame;

[0007] A sealing turntable assembly, wherein the sealing turntable assembly comprises a first turntable and a sealing assembly, wherein the first turntable is rotatably arranged on the frame, and a plurality of the sealing assemblies are arranged along the circumference of the first turntable, wherein the sealing assembly comprises a first sealing guide post, a second sealing guide post and a sealing pressing mold which are arranged concentrically, wherein a first accommodating groove for placing a cell to be sealed is provided between the sealing pressing mold and the second sealing guide post, and the first sealing guide post, the second sealing guide post and the sealing pressing mold cooperate to seal the cell to be sealed;

[0008] A loading turntable assembly, the loading turntable assembly includes a second turntable and a battery cell loading assembly, the second turntable is arranged on one side of the first turntable, the second turntable is rotatably arranged on the frame, and the battery cell loading assembly can push the battery cell to be sealed into the first accommodating groove for sealing.

[0009] A second aspect of the present invention provides a battery sealing method, which uses the battery sealing device as described in any one of the above items to seal the battery, comprising the following steps:

[0010] The battery cells to be sealed are placed on the loading turntable assembly. When the second turntable drives the battery cells to be sealed to rotate to the loading station, the battery cell loading assembly pushes the battery cells to be sealed into the sealing assembly located at the loading station, and the sealing assembly performs the first sealing on the battery cells to be sealed;

[0011] The second turntable drives the battery cell after the first sealing to rotate, and at the same time, the first turntable drives the sealing assembly to rotate. When the next sealing assembly rotates to the loading station, the battery cell after the first sealing rotates to the loading station, and the battery cell loading assembly pushes the battery cell after the first sealing into the sealing assembly at the loading station again, and the next sealing assembly performs a second sealing on the battery cell after the first sealing;

[0012] Repeat the above steps until the battery cell is sealed.

[0013] The battery sealing device and sealing method described in the present invention, by arranging a sealing component in the circumferential direction of the first turntable, the sealing component is directly connected to the first turntable, the installation is convenient and quick, and the assembly accuracy can be improved, and the large assembly error caused by the multi-layer structure is avoided. The first sealing guide post, the second sealing guide post and the sealing pressing mold in the sealing component are concentrically arranged, so that the sealing component has extremely high concentricity, which can avoid the eccentricity between the parts on the multi-layer support member and reduce the repeated use of tooling for centering, which is not only conducive to improving the molding accuracy of the battery cell sealing, ensuring the stability and consistency of the size of the battery cell after sealing, but also can simplify the difficulty of assembly; in addition, the feeding turntable assembly is arranged on one side of the first turntable, which can be connected with the previous process of the battery cell production, and the battery cell of the previous process of the battery cell production can be smoothly transferred to the sealing turntable assembly for sealing, which can realize the continuous processing and production of the battery cell, which is conducive to improving the efficiency of the battery cell production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of a battery sealing device provided in an embodiment of the present invention;

[0015] Figure 2 A schematic side view of the battery sealing device provided in an embodiment of the present invention;

[0016] Figure 3 A schematic top view of the battery sealing device provided in an embodiment of the present invention;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the sealing turntable assembly provided in an embodiment of the present invention;

[0018] Figure 5 It is a schematic cross-sectional structural diagram of a sealing assembly provided in an embodiment of the present invention;

[0019] Figure 6It is a schematic diagram of the three-dimensional structure of the internal resistance and height detection component provided in an embodiment of the present invention;

[0020] Figure 7 It is a schematic diagram of the three-dimensional structure of the first turntable provided in an embodiment of the present invention;

[0021] Figure 8 It is a schematic diagram of the main structure of the first turntable provided in an embodiment of the present invention;

[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure of the loading turntable assembly provided in an embodiment of the present invention;

[0023] Fig.10 It is a schematic diagram of the top view of the loading turntable assembly provided in an embodiment of the present invention;

[0024] Fig.11 for Fig.10 Schematic diagram of the cross-sectional structure along the AA plane. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described clearly and in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, in the description of the present invention, the meaning of "at least one" is one or more, and the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this specification, the term "as an optional implementation" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one optional embodiment or optional example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] Combination Figures 1 to 5As shown, this embodiment provides a battery sealing device, including: a frame 10, a sealing turntable assembly 20 and a feeding turntable assembly 30, wherein:

[0028] The sealing turntable assembly 20 includes a first turntable 21 and a sealing assembly 22. The first turntable 21 is rotatably arranged on the frame 10. A plurality of sealing assemblies 22 are arranged along the circumference of the first turntable 21. The sealing assembly 22 includes a first sealing guide post, a second sealing guide post and a sealing pressing mold which are arranged concentrically. A first accommodating groove for placing the battery cell to be sealed is provided between the sealing pressing mold and the second sealing guide post. The first sealing guide post, the second sealing guide post and the sealing pressing mold cooperate to seal the battery cell to be sealed.

[0029] The loading turntable assembly 30 includes a second turntable 31 and a battery cell loading assembly. The second turntable 31 is arranged on one side of the first turntable 21. The second turntable 31 is rotatably arranged on the frame 10. The battery cell loading assembly can push the battery cell to be sealed into the first accommodating groove for sealing.

[0030] For the sake of ease of description, the workstation where the sealing turntable assembly 20 and the loading turntable assembly 30 are docked is defined as the loading station E. The battery cell loading assembly transfers the battery cell to be sealed to the sealing turntable assembly 20 for sealing. The position of the loading station E is fixed and will not rotate with the rotation of the first turntable 21 and the second turntable 31. The loading station E is located in the area where the sealing turntable assembly 20 and the loading turntable assembly 30 intersect.

[0031] In the prior art, a three-layer support is arranged on the main shaft, and a descending unit, a positioning unit and a lifting unit are respectively arranged on the three-layer support, and the battery cells are sealed by cooperating with these parts. However, the three-layer support is arranged on the main shaft, and the main shaft is long and difficult to install and is prone to eccentricity, resulting in poor rotation accuracy. In addition, the battery cells are sealed by cooperating with the three-layer support, which makes the cumulative deviations such as assembly error and processing error of the sealing device large, so that the battery sealing device cannot run smoothly, and the end face of the battery cell is prone to unevenness, resulting in low sealing and molding accuracy of the battery cell. In order to solve the above problems in the present embodiment, a sealing assembly is arranged in the circumference of the first turntable, and the sealing assembly is directly connected to the first turntable, which is convenient and quick to install, and can improve the assembly accuracy, avoiding the large assembly error caused by the multi-layer structure, and the first sealing guide post, the second sealing guide post and the sealing pressing mold in the sealing assembly are concentrically arranged, so that the sealing assembly has extremely high concentricity, which can avoid the eccentricity between the parts on the multi-layer support, and reduce the repeated use of tooling for centering, which is not only beneficial to improve the molding accuracy of the battery cell sealing, ensure the stability and consistency of the size of the battery cell after sealing, but also can simplify the difficulty of assembly; in addition, the loading turntable assembly is arranged on one side of the first turntable, and can be connected with the previous process of the battery cell production, and the battery cells of the previous process of the battery cell production can be smoothly transferred to the sealing turntable assembly for sealing, which can realize continuous processing and production of the battery cells, and is beneficial to improving the efficiency of the battery cell production.

[0032] Based on the above embodiment, as an optional implementation mode, Figure 5As shown, the sealing assembly 22 also includes a mounting seat 221, which is provided with a concentric first through hole, a second through hole and a third through hole. The first through hole, the second through hole and the third through hole are arranged in sequence along the vertical direction, and the second through hole is arranged between the first through hole and the third through hole. The first sealing guide pillar 222 is arranged on the mounting seat 221 through the first through hole, and the sealing mold 223 is arranged on the first sealing guide pillar 222. The first sealing guide pillar 222 can drive the sealing mold 223 to move downward in the vertical direction. The first accommodating groove is arranged between the second through hole and the third through hole. The second sealing guide pillar 224 is arranged on the mounting seat 221 through the third through hole. The second sealing guide pillar 224 can drive the battery cell 1 to be sealed placed in the first accommodating groove to move upward in the vertical direction, push the battery cell 1 to be sealed into the second through hole, and make the battery cell 1 to be sealed be located in the accommodating cavity of the sealing mold 223, so that the sealing mold 223 seals the battery cell 1 to be sealed. Among them, the sealing pressing mold 223 includes a molding convex mold 2231 and a battery cell holding mold 2232. The battery cell holding mold 2232 has an accommodating cavity. The battery cell holding mold 2232 is used to hold the battery cell 1 to be sealed to fix the position of the battery cell 1 to be sealed. The molding convex mold 2231 is located between the battery cell holding mold 2232 and the first sealing guide column 222. The molding convex mold 2231 is used to press the battery cell 1 to be sealed to shape and seal the battery cell 1 to be sealed. Specifically, the battery cell mold 2232 includes a mold shrink sleeve 2232A and a mold fixing portion 2232B. The molding punch 2231 and the mold shrink sleeve 2232A are both installed in the first sealing guide column 222, and the mold fixing portion 2232B is installed above the second through hole. The second sealing guide column 224 drives the battery cell 1 to be sealed to move upward in the vertical direction, passes through the second through hole, and pushes the battery cell 1 to be sealed into the accommodating cavity of the battery cell mold 2232 to fix the battery cell to be sealed. The first sealing guide column 222 drives the molding punch 2231 and the mold shrink sleeve 2232A to move downward in the vertical direction. The mold shrink sleeve 2232A radially shrinks the mold fixing portion 2232B to completely fix the battery cell to be sealed. The molding punch 2231 presses the battery cell 1 to be sealed, and seals the fixed battery cell 1 to be sealed. Therefore, in this embodiment, three concentric through holes are opened on the mounting seat 221, and the first sealing guide column 222 is installed through the first through hole, and the second sealing guide column 224 is installed through the third through hole, so that the concentricity between the first sealing guide column 222, the second sealing guide column 224 and the sealing pressing mold 223 is ensured, and the first sealing guide column 222, the second sealing guide column 224 and the sealing pressing mold 223 are all installed on the mounting seat 221, thereby improving the accuracy of the sealing component 22, which is beneficial to improving the sealing molding accuracy of the battery cell; in addition, by opening three concentric through holes on the mounting seat 221, the modularization of the sealing component 22 can be realized, which not only reduces the processing cost, but also when an abnormality occurs in a certain workstation, the sealing component 22 can be quickly replaced, which is beneficial to shortening the downtime and improving the production efficiency of the battery cell.

[0033] It should be noted that the specific structures of the forming convex mold 2231 and the battery cell holding mold 2232 are not further limited in this embodiment, and those skilled in the art can select the forming convex mold and battery cell holding mold structures commonly used in the art according to actual conditions. As an optional embodiment, the battery cell holding mold 2232 can be a three-claw holding mold.

[0034] On the basis of the above-mentioned embodiment, as an optional implementation, the sealing press mold 223 is detachably connected to the first sealing guide column 222. Specifically, the molding convex mold 2231 and the mold shrink sleeve 2232A can be installed in the first sealing guide column 222 by means of screws, and the mold fixing portion 2232B can be installed above the second through hole by means of screws to realize the detachable connection between the sealing press mold 223 and the first sealing guide column 222. Thus, the sealing press mold 223 is detachably connected to the first sealing guide column 222, and different types of sealing press molds 223 can be replaced, so that the sealing assembly 22 can be compatible with battery cells of different diameters or battery cells of different heights, and the sealing assembly 22 can realize different sealing functions, thereby improving the scope of application of the sealing assembly 22.

[0035] Based on the above embodiment, as an optional implementation mode, Figure 1 and Figure 2As shown, the battery sealing device also includes a first driving member 40 and a second driving member 50, both of which are arranged on the frame 10, the first driving member 40 is arranged above the sealing turntable assembly 20, and the second driving member 50 is arranged below the sealing turntable assembly 20, the first sealing guide column 222 is connected to the first driving member 40, the first driving member 40 is used to drive the first sealing guide column 222 to drive the sealing pressing mold 223 to move downward in the vertical direction, so that the sealing pressing mold 223 moves toward the battery cell to be sealed, the second sealing guide column 224 is connected to the second driving member 50, the second driving member 50 is used to drive the second sealing guide column 224 to drive the battery cell to be sealed to move upward in the vertical direction, pass through the second through hole and push the battery cell to be sealed into the accommodating cavity of the battery cell holding mold 2232. Specifically, a first cam 2221 is provided at one end of the first sealing guide column 222 away from the sealing pressure mold 223, and a second cam 2241 is provided at one end of the second sealing guide column 224 away from the sealing pressure mold 223. A first flange and a second flange (not shown in the figure) are provided on the frame 10. The first flange is provided above the sealing turntable assembly 20, and the second flange is provided below the sealing turntable assembly 20. The first flange is provided with a first notch at the loading station E, and the second flange is provided with a second notch at the loading station E. Therefore, when the first turntable 21 rotates and drives the sealing assembly 22 to rotate, the first sealing guide column 222 rotates around the first flange through the first cam 2221, and the second sealing guide column 224 rotates around the second flange through the second cam 2241. When the first sealing guide column 222 and the second sealing guide column 224 rotate to the loading station E, the first driving member 40 can drive the first cam 2221 to move downward in the vertical direction, so that the first cam 2221 can pass through the first notch and drive the first sealing guide column 222 to move downward in the vertical direction. The second driving member 50 can drive the second cam 2241 to move upward in the vertical direction, so that the second cam 2241 can pass through the second notch and drive the second sealing guide column 224 to move upward in the vertical direction. The above structure can not only realize that the first driving member 40 drives the first sealing guide pillar 222 to move downward in the vertical direction, and the second driving member 50 drives the second sealing guide pillar 224 to move upward in the vertical direction, but also ensure that the first sealing guide pillar 222 and the second sealing guide pillar 224 always maintain a concentric state when sealing the battery cell, which is conducive to further improving the sealing molding accuracy. As an optional embodiment, the first driving member 40 and the second driving member 50 can both use pressure cylinders.

[0036] Based on the above embodiment, as an optional implementation, the sealing assembly 22 further includes a follower 225, and the follower 225 is provided at the connection between the first sealing guide column 222 and the mounting seat 221, and the follower 225 is provided at the connection between the second sealing guide column 224 and the mounting seat 221. Therefore, by providing the follower 225, the rotation of the first sealing guide column 222 and the second sealing guide column 224 can be prevented, which affects the accuracy of the cell sealing molding.

[0037] Based on the above embodiment, as an optional implementation mode, Figure 3 As shown, the battery sealing device includes a first sealing component 22A, a second sealing component 22B, a third sealing component 22C, a sealing component 22D and an internal resistance and height detection component 23, and the first sealing component 22A, the second sealing component 22B, the third sealing component 22C, the sealing component 22D and the internal resistance and height detection component 23 are arranged along the circumference of the first turntable 21. When the first turntable 21 rotates, the first sealing component 22A, the second sealing component 22B, the third sealing component 22C, the sealing component 22D and the internal resistance and height detection component 23 can be driven to rotate relative to the frame 10. Among them, the first sealing component 22A, the second sealing component 22B, the third sealing component 22C and the sealing component 22D can all adopt the structure of the sealing component 22, and only need to replace the sealing pressing mold 223 to achieve different sealing functions, for example: the first sealing component 22A is installed on the first sealing guide column 222, and the sealing pressing mold 223 suitable for performing the first sealing is installed on the first sealing guide column 222. The sealing component 22D is installed on the first sealing guide column 222. It can be understood that those skilled in the art can also set the number of sealing components on the battery sealing device according to actual conditions, or add other detection components.

[0038] Based on the above embodiment, as an optional implementation, the internal resistance and height detection component 23 is used to detect the internal resistance and total height of the battery cell after sealing. Figure 6As shown, the internal resistance and height detection assembly 23 includes a mounting bracket 231, a first internal resistance detection probe 232, a second internal resistance detection probe 233 and a height detection probe 234, wherein the mounting bracket 231 has a second accommodating groove for placing the battery cell, the first internal resistance detection probe 232 and the second internal resistance detection probe 233 are respectively arranged at both ends of the second accommodating groove along the vertical direction, the first internal resistance detection probe 232 is used to abut against the first pole of the battery cell, and the second internal resistance detection probe 233 is used to abut against the second pole of the battery cell, and the polarities of the first pole and the second pole are opposite. An internal resistance detector 60 is also arranged on the frame 10, and the internal resistance detector 60 is arranged close to the first driving member 40, and the internal resistance detector 60 is connected to the first internal resistance detection probe 232 and the second internal resistance detection probe 233. After the first internal resistance detection probe 232 and the second internal resistance detection probe 233 abut against the sealed battery cell, the internal resistance detector 60 performs internal resistance detection on the sealed battery cell. The height detection probe 234 is arranged on the mounting bracket 231, and the height detection probe 234 is arranged close to the first internal resistance detection probe 232. The height detection probe 234 is used to detect the total height of the battery cell after sealing, wherein the total height of the battery cell refers to the height between the two ends of the battery cell along the axial direction. Therefore, after the battery cell is sealed, the internal resistance and total height of the sealed battery cell are detected by the internal resistance and height detection component 23, which can not only improve the accuracy of the battery cell internal resistance and total height detection and the accuracy of the height detection, but also help to improve the production efficiency of the battery cell.

[0039] On the basis of the above embodiment, as an optional implementation, the internal resistance and height detection component 23 also includes a third cam 235 and a fourth cam 236. When the first turntable 21 rotates to drive the internal resistance and height detection component 23 to rotate, the third cam 235 can rotate around the first flange and the fourth cam 236 can rotate around the second flange, thereby making the internal resistance and height detection component 23 rotate more smoothly.

[0040] Based on the above embodiment, as an optional implementation mode, Figure 7 and Figure 8As shown, the first turntable 21 includes a connected rotary shaft 211 and a slewing bearing 212, and the rotary shaft 211 is provided with a plurality of mounting positions along its circumference, and the sealing assembly 22 and the internal resistance and height detection assembly 23 are mounted on the rotary shaft 211 through the mounting positions, and the rotary shaft 211 can be a rotary hexagonal shaft. The first turntable 21 also includes a power transmission shaft 213 and a transmission gear 214, and the transmission gear 214 is arranged on the power transmission shaft 213, and the power transmission shaft 213 is connected to the slewing bearing 212, and the transmission gear 214 and the power transmission shaft 213 are driven to rotate by the power driving member, thereby driving the slewing bearing 212 and the rotary shaft 211 to rotate, so that the sealing assembly 22 and the internal resistance and height detection assembly 23 installed on the rotary shaft 211 rotate. Therefore, by using the structure of the rotary shaft 211 plus the slewing bearing 212 as the first turntable 21, the rotation accuracy of the first turntable 21 is higher, and the structure of the first turntable 21 is also simpler and more reliable.

[0041] Based on the above embodiment, as an optional implementation, the first rotating disk 21 further includes an electric slip ring assembly 24, which is arranged on the first rotating disk 21, and the electric slip ring assembly 24 is used to connect and transmit electrical components of power and signals to the first rotating disk 21. As an optional implementation, the internal resistance detector 60 can be connected to the internal resistance and height detection assembly 23 through the electric slip ring assembly 24.

[0042] Based on the above embodiment, as an optional implementation mode, Fig. 9 As shown, the battery cell loading assembly includes a battery cell feeding assembly 32 and a battery cell pushing assembly 33. The battery cell pushing assembly 33 is arranged on the frame 10. When the second turntable 31 rotates, the battery cell pushing assembly 33 will not rotate with the second turntable 31; the battery cell feeding assembly 32 is connected to the second turntable 31, and the second turntable 31 can drive the battery cell feeding assembly 32 to rotate. When the battery cell feeding assembly 32 rotates to the battery cell pushing assembly 33, the battery cell pushing assembly 33 can push the battery cell to be sealed into the first receiving groove of the sealing assembly 22 through the battery cell feeding assembly 32, so that the sealing assembly 22 seals the battery cell, or push the sealed battery cell into the second receiving groove of the internal resistance and height detection assembly 23, so that the internal resistance and height detection assembly 23 performs internal resistance detection on the sealed battery cell. Therefore, the battery cell material transfer component 32 and the battery cell pushing component 33 can realize seamless connection between the previous process and the next process, which is beneficial to realize continuous processing and production of battery cells and improve the efficiency of battery cell production.

[0043] Based on the above embodiment, as an optional implementation mode, Fig. 9 and Fig.10As shown, the loading turntable assembly 30 also includes a battery cell transfer tray 34, which is arranged on the frame 10 through a support rod. When the second turntable 31 rotates, the battery cell transfer tray 34 will not rotate with the second turntable 31. The battery cell transfer tray 34 is annular and is arranged around the outer periphery of the second turntable 31. The battery cell transfer tray 34 is provided with a rib to prevent the battery cells from falling when the battery cell transfer assembly 32 drives the battery cells to rotate. A third notch 341 is provided on the side of the battery cell transfer tray 34 close to the sealing turntable assembly 20. The third notch 341 is arranged close to the battery cell pushing assembly 33. The battery cell transfer tray 34 is used to place battery cells. When the second turntable 31 drives the battery cell transfer assembly 32 to rotate, the battery cell transfer assembly 32 drives the battery cells to move along the battery cell transfer tray 34 to the third notch 341. The battery cell pushing assembly 33 pushes the battery cell transfer assembly 32 toward the sealing turntable assembly 20 to push the battery cells into the first receiving groove of the sealing assembly 22 or the second receiving groove of the internal resistance and height detection assembly 23. Therefore, by setting up the battery cell transfer tray 34, the transportation of the battery cells is facilitated, and the battery cells of the previous process can be smoothly transported to the next process, and by setting up the third notch, avoidance can be performed, so that the battery cell pushing component 33 can smoothly push the battery cells on the battery cell transfer component 32 into the first receiving groove of the sealing component 22 or the second receiving groove of the internal resistance and height detection component 23.

[0044] Based on the above embodiment, as an optional implementation mode, Figure 3 As shown, the projection of one side of the cell transfer tray 34 where the third notch 341 is provided is located in the vertical direction within the projection range of the sealing turntable assembly 20. Therefore, when the cell moves along the cell transfer tray 34 to the third notch 341, the cell transfer assembly 32 can better cooperate with the sealing assembly 22, or the cell transfer assembly 32 can better cooperate with the internal resistance and height detection assembly 23, clamp the cell, move the cell more smoothly, and prevent the cell from falling.

[0045] Based on the above embodiment, as an optional implementation mode, Fig.11As shown, the battery cell pushing assembly 33 includes a first push rod 331 and a fifth cam 332. The fifth cam 332 is arranged at the end of the first push rod 331 away from the frame 10. The first push rod 331 can move in a horizontal direction to drive the fifth cam 332 to move toward the sealing turntable assembly 20. The fifth cam 332 is used to abut against the battery cell transferring assembly 32 to drive the battery cell transferring assembly 32 to move in a horizontal direction close to the sealing turntable assembly 20. The battery cell transfer assembly 32 includes a second push rod 321, a third push rod 322, a battery cell fixing seat 323 and a cam follower 324. The battery cell fixing seat 323 is arranged on the second turntable 31. The battery cell fixing seat 323 is provided with a third receiving groove for placing the battery cell. The third push rod 322 is penetrated by the battery cell fixing seat 323, and the third push rod 322 can contact the battery cell in the third receiving groove. The third push rod 322 is used to push the battery cell in the third receiving groove. The third push rod 322 is vertically arranged to the second push rod 321. The first end of the second push rod 321 passes through the battery cell fixing seat 323 and is connected to the third push rod 322. The second end of the second push rod 321 is provided with a cam follower 324, and the cam follower 324 can abut against the fifth cam 332, wherein the first end and the second end are two ends of the second push rod 321 that are relatively arranged in the vertical direction. Therefore, when the cam follower 324 rotates to abut against the fifth cam 332, the first push rod 331 can drive the cam follower 324 to move horizontally through the fifth cam 332, thereby driving the second push rod 321 and the third push rod 322 to move horizontally to push out the battery cell in the battery cell fixing seat 323.

[0046] On the basis of the above embodiment, as an optional implementation manner, the battery cell fixing seat 323 is further provided with a slide groove for the second push rod 321 to move, the slide groove runs through the battery cell fixing seat 323, and the third push rod 322 is penetrated with a reset elastic member 325, one end of the reset elastic member 325 abuts against the second push rod 321, and the other end of the reset elastic member 325 abuts against the third push rod 322. When the cam follower 324 drives the second push rod 321 to move in the horizontal direction, the second push rod 321 can move along the slide groove to push the third push rod 322 to move along the water line. The third push rod 322 moves in the horizontal direction, and the reset elastic member 325 pushes the second push rod 321 to move in the horizontal direction to push the battery cell into the first receiving groove of the sealing assembly 22 or the second receiving groove of the internal resistance and height detection assembly 23, and when the cam follower 324 leaves the fifth cam 332 (that is, the cam follower 324 is not in contact with the fifth cam 332), the reset elastic member 325 in the compressed state pushes the second push rod 321 and the third push rod 322 to reset, so as to facilitate the transfer of the next battery cell to the sealing turntable assembly 20.

[0047] Based on the above embodiment, as an optional implementation mode, Figures 1 to 3As shown, the battery sealing device also includes a CCD detection component 70, which is arranged on the frame 10 and located at the periphery of the second turntable 31. The CCD detection component 70 is used to take photos and detect the sealed battery cells to reduce the errors caused by manual detection. Specifically, the CCD detection component 70 includes a detection camera 71 and a light source 72, which are both arranged at the periphery of the second turntable 31. The detection camera 71 is used to take photos of the sealed battery cells, and the light source 72 is used to illuminate the battery cells for the convenience of the detection camera to take photos and detect. Therefore, when the battery cells are transferred to the battery cell transfer tray 34 after sealing, the sealed battery cells can be photographed and detected by the CCD detection component 70, and the sealed battery cells can be transferred to the next process after the detection is completed, which is conducive to further improving the production efficiency of the battery cells.

[0048] A second aspect of the present embodiment provides a battery sealing method, wherein the battery sealing device of the first aspect is used to seal the battery, and the battery sealing method comprises the following steps:

[0049] Step S1, placing the battery cell to be sealed on the loading turntable assembly, when the second turntable drives the battery cell to rotate to the loading station, the battery cell loading assembly pushes the battery cell to be sealed into the sealing assembly located at the loading station, and the sealing assembly performs the first sealing on the battery cell to be sealed.

[0050] Specifically, the battery cells to be sealed can be placed on the battery cell transfer disk 34 manually or by a robot. The second turntable 31 drives the battery cell transfer assembly 32 to rotate when rotating, and the battery cell transfer assembly 32 drives the battery cells to be sealed to move. When the battery cells to be sealed rotate to the loading station E, at this time, the first sealing assembly 22A is located at the loading station A, and the battery cell pushing assembly 33 pushes the battery cell transfer assembly 32 to move toward the sealing turntable assembly 20, and pushes the battery cell transfer assembly 32 and the battery cells to be sealed into the first accommodating groove of the first sealing assembly 22A, and the first sealing assembly 22A seals the battery cells to be sealed.

[0051] Step S2, the second turntable drives the battery cell after the first sealing to rotate, and at the same time, the first turntable drives the sealing assembly to rotate. When the next sealing assembly rotates to the loading station, the battery cell after the first sealing rotates to the loading station, and the battery cell loading assembly pushes the battery cell after the first sealing into the sealing assembly at the loading station again, and the next sealing assembly seals the battery cell after the first sealing for the second time; repeat the above operation until the battery cell is sealed.

[0052] Specifically, the sealed cell is transferred to the cell transfer disc 34, the second turntable 31 and the first turntable 21 rotate simultaneously, the first turntable 21 drives the sealing assembly 22 to rotate, when the second sealing assembly 22B rotates to the loading station E, the second turntable 31 drives the sealed cell to rotate to the loading station E, the cell pushing assembly 33 pushes the cell transfer assembly 32 toward the sealing turntable assembly 20 again, pushes the cell transfer assembly 32 and the sealed cell into the first receiving groove of the second sealing assembly 22B, and the second sealing assembly 22B performs the second sealing on the sealed cell. Repeat the above operation, perform the third sealing and the first sealing on the cell in turn, and complete the sealing process of the cell. Subsequently, the second turntable 31 and the first turntable 21 rotate simultaneously, and the first turntable 21 drives the internal resistance and height detection component 23 to rotate. When the internal resistance and height detection component 23 rotates to the loading station E, the second turntable 31 drives the sealed battery cells to rotate to the loading station E. The battery cell pushing component 33 pushes the battery cell transferring component 32 toward the sealing turntable assembly 20 again, and pushes the battery cell transferring component 32 and the sealed battery cells into the second containing groove of the internal resistance and height detection component 23 for internal resistance detection and total height detection. The detected battery cells are transferred to the battery cell transfer tray 34 for unloading.

[0053] The battery sealing method provided in this embodiment, through the cooperation of the loading turntable assembly and the sealing turntable assembly, can smoothly transfer the battery cells of the previous production process to the sealing turntable assembly for sealing, and can smoothly connect the multiple sealing of the battery cells, thereby realizing the continuous processing and production of the battery cells, which is beneficial to improving the efficiency of the battery cell production.

[0054] In this embodiment, after each cell packaging is completed and transferred to the cell transfer tray 34, the CCD detection component 70 can take photos of the cell after each sealing to detect the cell and timely remove defective cells to avoid transfer to the next process.

[0055] It should be noted that those skilled in the art can set the size of the third notch 341 according to actual conditions, as long as it can ensure that the third notch 341 can play a role in avoiding the cell pushing assembly 33 from pushing the cell transfer assembly 32 toward the sealing turntable assembly 20, and smoothly transfer the cells in the sealing assembly 22 and the internal resistance and height detection assembly 23 to the cell transfer tray 34. As an optional embodiment, when transferring the cells in the sealing assembly 22 and the internal resistance and height detection assembly 23 to the cell transfer tray 34, so as to facilitate the subsequent rotation of the cells by the second turntable, a manipulator can be used to assist in transferring the cells.

[0056] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A battery sealing device, characterized in that: include: frame; A sealing turntable assembly, wherein the sealing turntable assembly comprises a first turntable and a sealing assembly, wherein the first turntable is rotatably arranged on the frame, and a plurality of the sealing assemblies are arranged along the circumference of the first turntable, wherein the sealing assembly comprises a first sealing guide post, a second sealing guide post and a sealing pressing mold which are arranged concentrically, wherein a first accommodating groove for placing a cell to be sealed is provided between the sealing pressing mold and the second sealing guide post, and the first sealing guide post, the second sealing guide post and the sealing pressing mold cooperate to seal the cell to be sealed; A loading turntable assembly, the loading turntable assembly includes a second turntable and a battery cell loading assembly, the second turntable is arranged on one side of the first turntable, the second turntable is rotatably arranged on the frame, and the battery cell loading assembly can push the battery cell to be sealed into the first accommodating groove for sealing.

2. The battery sealing device according to claim 1, characterized in that: The sealing assembly also includes a mounting seat, which is provided with a concentric first through hole, a second through hole and a third through hole, the first sealing guide column is arranged on the mounting seat through the first through hole, the sealing pressing mold is detachably connected to the first sealing guide column, the second sealing guide column is arranged on the mounting seat through the third through hole, the second through hole is arranged between the first through hole and the third through hole, the sealing pressing mold includes a forming convex mold and a battery cell holding mold, the battery cell holding mold is installed above the second through hole, the second sealing guide column can push the battery cell to be sealed through the second through hole, so that the battery cell to be sealed is located in the battery cell holding mold, and the first sealing guide column drives the forming convex mold to move toward the battery cell to be sealed to seal the battery cell to be sealed.

3. The battery sealing device according to claim 2, characterized in that: It also includes a first driving member and a second driving member, both of which are arranged on the frame, the first sealing guide column is connected to the first driving member, the first driving member is used to drive the first sealing guide column to drive the sealing press mold to move toward the battery cell to be sealed, the second sealing guide column is connected to the second driving member, the second driving member is used to drive the second sealing guide column to drive the battery cell to be sealed to pass through the second through hole and move the battery cell to be sealed into the sealing press mold.

4. The battery sealing device according to claim 1, characterized in that: The sealing turntable assembly also includes an internal resistance and height detection assembly, which is used to detect the internal resistance and total height of the battery cell after sealing, and multiple sealing assemblies and internal resistance and height detection assemblies are arranged along the circumference of the first turntable; the first turntable includes a connected rotating shaft and a rotating bearing, and the rotating shaft is provided with multiple mounting positions along its circumference, and multiple sealing assemblies and internal resistance and height detection assemblies are arranged on the rotating shaft through the mounting positions.

5. The battery sealing device according to claim 4, characterized in that: The battery cell loading assembly includes a battery cell transferring assembly and a battery cell pushing assembly, the battery cell pushing assembly is arranged on the frame, the battery cell transferring assembly is connected to the second turntable, the second turntable can drive the battery cell transferring assembly to rotate, when the battery cell transferring assembly rotates to the battery cell pushing assembly, the battery cell pushing assembly can push the battery cell to be sealed into the sealing assembly through the battery cell transferring assembly, or can push the sealed battery cell into the internal resistance and height detection assembly.

6. The battery sealing device according to claim 5, characterized in that: The loading turntable assembly also includes a cell transfer tray for placing battery cells, the cell transfer tray is arranged on the frame, the cell transfer tray is arranged around the outer circumference of the second turntable, the cell transfer tray is provided with a rib, and a third notch is provided on the side of the cell transfer tray close to the sealing turntable assembly, the cell transfer assembly can drive the battery cells to move along the cell transfer tray to the third notch, so that the cell pushing assembly can push the cell transfer assembly toward the sealing turntable assembly to push the battery cells into the sealing assembly or the internal resistance and height detection assembly.

7. The battery sealing device according to claim 5, characterized in that: The battery cell transfer assembly includes a second push rod, a third push rod, a battery cell fixing seat and a cam follower. The battery cell fixing seat is arranged on the second turntable. The battery cell fixing seat is provided with a third receiving groove for placing the battery cell. The third push rod is passed through the battery cell fixing seat. The third push rod is used to push the battery cell in the third receiving groove. The third push rod is vertically arranged to the second push rod, and the first end of the second push rod passes through the battery cell fixing seat and is connected to the third push rod. The cam follower is arranged at the second end of the second push rod. The first end and the second end are two ends of the second push rod that are opposite to each other in the vertical direction.

8. The battery sealing device according to claim 7, characterized in that: The battery core pushing assembly comprises a first push rod and a fifth cam, wherein the fifth cam is arranged on the first push rod, the first push rod can move toward the sealing turntable assembly, and the fifth cam can abut against the cam follower; The battery cell material transfer assembly also includes a reset elastic member, which is passed through the third push rod, and one end of the reset elastic member abuts against the second push rod, and the other end of the reset elastic member abuts against the third push rod.

9. The battery sealing device according to claim 1, characterized in that: It also includes a CCD detection component, which is arranged on the frame and located at the outer periphery of the second turntable. The CCD detection component is used to detect the sealed battery cells.

10. A battery sealing method, characterized in that: Sealing a battery using the battery sealing device according to any one of claims 1 to 9 comprises the following steps: The battery cells to be sealed are placed on the loading turntable assembly. When the second turntable drives the battery cells to be sealed to rotate to the loading station, the battery cell loading assembly pushes the battery cells to be sealed into the sealing assembly located at the loading station, and the sealing assembly performs the first sealing on the battery cells to be sealed; The second turntable drives the battery cell after the first sealing to rotate, and at the same time, the first turntable drives the sealing assembly to rotate. When the next sealing assembly rotates to the loading station, the battery cell after the first sealing rotates to the loading station, and the battery cell loading assembly pushes the battery cell after the first sealing into the sealing assembly at the loading station again, and the next sealing assembly performs a second sealing on the battery cell after the first sealing; Repeat the above steps until the battery cell is sealed.

Images