A battery sealing device and a battery sealing method

Abstract

The application provides a battery sealing device and a battery sealing method. The battery sealing device comprises a rack, a sealing turntable assembly and a feeding turntable assembly. The sealing turntable assembly comprises a first turntable and a sealing assembly. The first turntable is rotatably arranged on the rack. A plurality of sealing assemblies are arranged along the circumference of the first turntable. The sealing assembly comprises concentrically arranged first sealing guide columns, second sealing guide columns and a sealing compression die. The sealing compression die and the second sealing guide columns have a first accommodating groove for placing a battery cell to be sealed. The first sealing guide columns, the second sealing guide columns and the sealing compression die cooperate to seal the battery cell to be sealed. The feeding turntable assembly comprises a second turntable and a battery cell feeding assembly. The second turntable is arranged on one side of the first turntable. The second turntable is rotatably arranged on the rack. The battery cell feeding assembly can push the battery cell to be sealed into the first accommodating groove for sealing. The application solves the problems of large deviation and low precision of the existing battery sealing device.

Description

TECHNICAL FIELD

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

[0002] In the existing battery manufacturing process, after injecting electrolyte into the battery, the battery injection port needs to be sealed to ensure the safety of the battery during use.

[0003] If the battery is sealed by semi-automatic sealing, i.e. mechanical sealing and manual feeding and unloading, this method has the problems of low feeding and unloading efficiency and easy occurrence of safety accidents. The existing technology usually uses a sealing device for automatic sealing, but the cumulative deviation of the assembly error and the processing error of the sealing device in the prior art is large, and the battery end face is prone to be uneven, resulting in low sealing forming precision of the battery. SUMMARY

[0004] The present application aims to solve the problem of large deviation and low precision of the existing battery sealing device, which affects the sealing forming precision of the battery.

[0005] To solve the above problems, the present application provides a battery sealing device, comprising:

[0006] a rack;

[0007] a sealing turntable assembly, the sealing turntable assembly comprising a first turntable and a sealing assembly, the first turntable being rotatably arranged on the rack, a plurality of the sealing assemblies being arranged along the circumference of the first turntable, the sealing assembly comprising a first sealing guide column, a second sealing guide column and a sealing compression mold arranged concentrically, the sealing compression mold and the second sealing guide column having a first accommodating groove for placing a battery to be sealed therebetween, the first sealing guide column, the second sealing guide column and the sealing compression mold cooperating to seal the battery to be sealed;

[0008] a feeding turntable assembly, the feeding turntable assembly comprising a second turntable and a battery feeding assembly, the second turntable being arranged on one side of the first turntable, the second turntable being rotatably arranged on the rack, the battery feeding assembly being capable of pushing the battery to be sealed into the first accommodating groove for sealing.

[0009] The second aspect of the present application provides a battery sealing method, which uses the battery sealing device according to any one of the above to seal the battery, comprising the following steps:

[0010] The battery to be sealed is placed on the loading turntable assembly, when the second turntable drives the battery to be sealed to rotate to the loading station, the battery loading assembly pushes the battery to be sealed into the sealing assembly located at the loading station, and the sealing assembly seals the battery to be sealed for the first time;

[0011] The second turntable drives the battery sealed for the first time to rotate, and the first turntable drives the sealing assembly to rotate, when the next sealing assembly rotates to the loading station, the battery sealed for the first time rotates to the loading station, and the battery loading assembly pushes the battery sealed for the first time into the sealing assembly at the loading station again, and the next sealing assembly seals the battery sealed for the first time for the second time.

[0012] The above operation is repeated until the battery is sealed.

[0013] The battery sealing device and the sealing method provided by the application have the following advantages: the sealing assembly is directly connected with the first turntable, so that the installation is convenient and fast, and the assembly precision is improved, the assembly error caused by the multi-layer structure is avoided, the first sealing guide column, the second sealing guide column and the sealing compression mold in the sealing assembly are concentrically arranged, so that the sealing assembly has high concentricity, the eccentricity between the parts on the multi-layer support is avoided, the centering of the repeatedly used tooling is reduced, the forming precision of the battery sealing is improved, the stability and consistency of the size of the sealed battery are ensured, and the assembly difficulty is simplified; in addition, the loading turntable assembly is arranged on one side of the first turntable, can be connected with the previous process of the battery production, and the battery in the previous process of the battery production is smoothly transferred to the sealing turntable assembly for sealing, so that the continuous processing and production of the battery can be realized, and the efficiency of the battery production is improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0015] Figure 2 It is a side view structural schematic diagram of the battery sealing device provided in the embodiment of the application;

[0016] Figure 3 It is a top view structural schematic diagram of the battery sealing device provided in the embodiment of the application;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the sealing turntable assembly provided in the embodiment of the application;

[0018] Figure 5 It is a sectional view structural schematic diagram of the sealing assembly provided in the embodiment of the application;

[0019] Figure 6A perspective view of the internal resistance and height detection assembly according to an embodiment of the present application is shown in FIG. 1.

[0020] Figure 7 A perspective view of the first rotating disc according to an embodiment of the present application is shown in FIG. 2.

[0021] Figure 8 A front view of the first rotating disc according to an embodiment of the present application is shown in FIG. 3.

[0022] Figure 9 A perspective view of the feeding rotating disc assembly according to an embodiment of the present application is shown in FIG. 4.

[0023] Figure 10 A top view of the feeding rotating disc assembly according to an embodiment of the present application is shown in FIG. 5.

[0024] Figure 11 A perspective view of the feeding rotating disc assembly according to an embodiment of the present application is shown in FIG. 6. Figure 10 A sectional view along the A-A plane. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. In the description of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "perpendicular", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. 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 the technical features referred to. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In addition, in the description of the present application, "at least one" means one or more, and "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In the description of the present application, the term "as an optional embodiment" 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment 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] In the description of the present application, the term "as an optional embodiment" 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment 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. Figures 1 to 5As shown, the embodiment provides a battery sealing device, which comprises a rack 10, a sealing turntable assembly 20 and a feeding turntable assembly 30, wherein:

[0028] The sealing turntable assembly 20 comprises a first turntable 21 and a sealing assembly 22, the first turntable 21 is rotatably arranged on the rack 10, and a plurality of sealing assemblies 22 are arranged along the circumference of the first turntable 21, the sealing assembly 22 comprises a first sealing guide column, a second sealing guide column and a sealing compression mold arranged concentrically, the sealing compression mold and the second sealing guide column have a first accommodating groove for placing a battery cell to be sealed therebetween, and the first sealing guide column, the second sealing guide column and the sealing compression mold cooperate to seal the battery cell to be sealed;

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

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

[0031] The prior art sets three layers of supporting members on the main shaft, sets a descending unit, a positioning unit and a jacking unit on each of the three layers of supporting members respectively, and cooperates the parts to seal the battery cell. However, the three layers of supporting members are arranged on the main shaft, the main shaft is long, difficult to install and easy to be eccentric, resulting in poor rotation accuracy. In addition, the three layers of supporting members cooperate to seal the battery cell, the cumulative deviation of assembly error and machining error of the sealing device is large, the battery sealing device runs not smoothly, the end face of the battery cell is not flat, and the sealing forming precision of the battery cell is low. In the embodiment, in order to solve the above problems, the sealing assembly is arranged in the circumferential direction of the first turntable, the sealing assembly is directly connected with the first turntable, is easy to install, and can improve the assembly precision, avoid large assembly error caused by multi-layer structure, and the first sealing guide column, the second sealing guide column and the sealing compression mold in the sealing assembly are arranged concentrically, so that the sealing assembly has high concentricity, the eccentricity between the parts on the multi-layer supporting member can be avoided, the centering of the repeatedly used tool is reduced, not only the forming precision of the battery cell sealing is improved, the stability and consistency of the size of the sealed battery cell are ensured, but also the assembly difficulty is simplified. In addition, the loading turntable assembly is arranged on one side of the first turntable, can be connected with the previous process of the battery cell production, smoothly transfers the battery cell in the previous process of the battery cell production to the sealing turntable assembly for sealing, can realize continuous processing and production of the battery cell, and is beneficial to improve the efficiency of the battery cell production.

[0032] On the basis of the above embodiment, as an optional implementation manner, in combination with Figure 5As shown, the sealing assembly 22 further comprises a mounting seat 221, and the mounting seat 221 is provided with concentric first, second and third through holes arranged in sequence in the vertical direction, and the second through hole is arranged between the first and third through holes. The first sealing guide column 222 is arranged on the mounting seat 221 through the first through hole, and the sealing compression mold 223 is arranged on the first sealing guide column 222. The first sealing guide column 222 can drive the sealing compression mold 223 to move downward in the vertical direction. The first containing groove is arranged between the second and third through holes. The second sealing guide column 224 is arranged on the mounting seat 221 through the third through hole. The second sealing guide column 224 can drive the to-be-sealed battery cell 1 placed in the first containing groove to move upward in the vertical direction, push the to-be-sealed battery cell 1 into the second through hole, and make the to-be-sealed battery cell 1 located in the containing cavity of the sealing compression mold 223, so that the sealing compression mold 223 seals the to-be-sealed battery cell 1. The sealing compression mold 223 comprises a forming punch 2231 and a battery cell mold holder 2232. The battery cell mold holder 2232 has a containing cavity and is used to tightly hold the to-be-sealed battery cell 1 to fix the position of the to-be-sealed battery cell 1. The forming punch 2231 is located between the battery cell mold holder 2232 and the first sealing guide column 222 and is used to press the to-be-sealed battery cell 1 to form and seal the to-be-sealed battery cell 1. Specifically, the battery cell mold holder 2232 comprises a mold holder contraction sleeve 2232A and a mold holder fixing portion 2232B. The forming punch 2231 and the mold holder contraction sleeve 2232A are both installed in the first sealing guide column 222. The mold holder fixing portion 2232B is installed above the second through hole. The second sealing guide column 224 drives the to-be-sealed battery cell 1 to move upward in the vertical direction, passes through the second through hole, and lifts the to-be-sealed battery cell 1 to the containing cavity of the battery cell mold holder 2232 to fix the to-be-sealed battery cell. The first sealing guide column 222 drives the forming punch 2231 and the mold holder contraction sleeve 2232A to move downward in the vertical direction. The mold holder contraction sleeve 2232A radially contracts the mold holder fixing portion 2232B to completely fix the to-be-sealed battery cell. The forming punch 2231 presses the to-be-sealed battery cell 1 and seals the fixed to-be-sealed battery cell 1. Thus, in this embodiment, three concentric through holes are formed on the mounting seat 221. 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, which ensures the concentricity between the first sealing guide column 222, the second sealing guide column 224 and the sealing compression mold 223. The first sealing guide column 222, the second sealing guide column 224 and the sealing compression mold 223 are all installed on the mounting seat 221, which improves the precision of the sealing assembly 22 and is conducive to improving the sealing forming precision of the battery cell. In addition, the three concentric through holes formed on the mounting seat 221 can realize the modularization of the sealing assembly 22, which not only reduces the processing cost, but also enables the sealing assembly 22 to be quickly replaced when an abnormality occurs at a certain station, which is conducive to shortening the downtime and improving the production efficiency of the battery cell.

[0033] It should be noted that the specific structure of the forming punch 2231 and the cell holding mold 2232 is not further limited in the embodiment, and those skilled in the art can select the commonly used forming punch and cell holding mold structure according to the actual situation. As an optional implementation manner, the cell holding mold 2232 can be a three-jaw holding mold.

[0034] On the basis of the above embodiment, as an optional implementation manner, the sealing and pressing mold 223 is detachably connected with the first sealing guide column 222. Specifically, the forming punch 2231 and the holding mold contraction sleeve 2232A can be installed in the first sealing guide column 222 through threaded members, and the holding mold fixing part 2232B can be installed above the second through hole through a threaded member, so as to realize the detachable connection between the sealing and pressing mold 223 and the first sealing guide column 222. Thus, the detachable connection between the sealing and pressing mold 223 and the first sealing guide column 222 can replace sealing and pressing molds 223 of different models, so that the sealing assembly 22 can be compatible with different diameter cells or different height cells, and the sealing assembly 22 can realize different sealing functions, and improve the application range of the sealing assembly 22.

[0035] On the basis of the above embodiment, as an optional implementation manner, in combination with Figure 1 and Figure 2As shown, the battery sealing device further comprises a first driving member 40 and a second driving member 50, both of which are arranged on the rack 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 with the first driving member 40, the first driving member 40 is used to drive the first sealing guide column 222 to move downward along the vertical direction, so that the sealing compression mold 223 moves towards the battery cell to be sealed, the second sealing guide column 224 is connected with the second driving member 50, and the second driving member 50 is used to drive the second sealing guide column 224 to move upward along the vertical direction, so that the battery cell to be sealed passes through the second through hole and is lifted into the accommodating cavity of the battery cell clamping mold 2232. Specifically, one end of the first sealing guide column 222 away from the sealing compression mold 223 is provided with a first cam 2221, one end of the second sealing guide column 224 away from the sealing compression mold 223 is provided with a second cam 2241, the rack 10 is provided with a first flange and a second flange (not marked in the figure), the first flange is arranged above the sealing turntable assembly 20, and the second flange is arranged 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 to drive 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, and 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 along the vertical direction, so that the first cam 2221 can drive the first sealing guide column 222 to move downward along the vertical direction through the first notch, and the second driving member 50 can drive the second cam 2241 to move upward along the vertical direction, so that the second cam 2241 can drive the second sealing guide column 224 to move upward along the vertical direction through the second notch. The above structure can not only realize that the first driving member 40 drives the first sealing guide column 222 to move downward along the vertical direction, and the second driving member 50 drives the second sealing guide column 224 to move upward along the vertical direction, but also can ensure that the first sealing guide column 222 and the second sealing guide column 224 always maintain a concentric state when sealing the battery cell, which is beneficial to further improve the forming precision of sealing. As an optional embodiment, both the first driving member 40 and the second driving member 50 can adopt a pressure cylinder.

[0036] On the basis of the above-mentioned embodiments, as an optional implementation, the sealing assembly 22 further comprises a follower 225, and the connection between the first sealing guide column 222 and the mounting seat 221 is provided with the follower 225, and the connection between the second sealing guide column 224 and the mounting seat 221 is provided with the follower 225. Thus, by providing the follower 225, the rotation of the first sealing guide column 222 and the second sealing guide column 224 can be prevented, and the precision of the cell sealing forming is affected.

[0037] On the basis of the above-mentioned embodiments, as an optional implementation, in combination with Figure 3 As shown in the figure, the battery sealing device comprises a first sealing assembly 22A, a second sealing assembly 22B, a third sealing assembly 22C, a bump sealing assembly 22D and an internal resistance and height detection assembly 23, and the first sealing assembly 22A, the second sealing assembly 22B, the third sealing assembly 22C, the bump sealing assembly 22D and the internal resistance and height detection assembly 23 are arranged along the circumference of the first turntable 21, and when the first turntable 21 rotates, the first sealing assembly 22A, the second sealing assembly 22B, the third sealing assembly 22C, the bump sealing assembly 22D and the internal resistance and height detection assembly 23 can be driven to rotate relative to the rack 10. Among them, the first sealing assembly 22A, the second sealing assembly 22B, the third sealing assembly 22C and the bump sealing assembly 22D can adopt the structure of the above-mentioned sealing assembly 22, and only by replacing the sealing pressure forming die 223 can different sealing functions be realized, for example: the first sealing assembly 22A installs the sealing pressure forming die 223 suitable for the first sealing on the first sealing guide column 222, and the bump sealing assembly 22D installs the sealing pressure forming die 223 suitable for the bump sealing on the first sealing guide column 222. It can be understood that those skilled in the art can also set the number of sealing assemblies on the battery sealing device according to the actual situation, or add other detection assemblies.

[0038] On the basis of the above-mentioned embodiments, as an optional implementation, the internal resistance and height detection assembly 23 is used for internal resistance detection and total height detection of the sealed cell. In combination with Figure 6As shown, the internal resistance and height detection assembly 23 comprises 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 two ends of the second accommodating groove along the vertical direction, the first internal resistance detection probe 232 is used for abutting against the first pole of the battery cell, the second internal resistance detection probe 233 is used for abutting against the second pole of the battery cell, and the polarities of the first pole and the second pole are opposite. The internal resistance detector 60 is further arranged on the rack 10, the internal resistance detector 60 is arranged close to the first driving member 40, the internal resistance detector 60 is connected with the first internal resistance detection probe 232 and the second internal resistance detection probe 233, and 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 detects the internal resistance of 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 for detecting the total height of the sealed battery cell, wherein the total height of the battery cell refers to the height between the two ends of the battery cell along the axial direction. Thus, after the battery cell is sealed, the internal resistance and the total height of the sealed battery cell are detected by the internal resistance and height detection assembly 23, which not only can improve the accuracy of the internal resistance and the total height detection of the battery cell and the accuracy of the height detection, but also is beneficial to improving the production efficiency of the battery cell.

[0039] On the basis of the above embodiment, as an optional implementation manner, the internal resistance and height detection assembly 23 further comprises a third cam 235 and a fourth cam 236, when the first rotating disc 21 drives the internal resistance and height detection assembly 23 to rotate, the third cam 235 can rotate around the first flange, and the fourth cam 236 can rotate around the second flange, so that the internal resistance and height detection assembly 23 rotates more smoothly.

[0040] On the basis of the above embodiment, as an optional implementation manner, in combination with Figure 7 and Figure 8As shown, the first rotary disc 21 comprises a swing shaft 211 and a swing bearing 212 connected with each other, the swing shaft 211 is provided with a plurality of mounting positions along the circumference thereof, the sealing assembly 22 and the internal resistance and height detection assembly 23 are mounted on the swing shaft 211 through the mounting positions, and the swing shaft 211 can be a swing hexagonal shaft. The first rotary disc 21 further comprises a power transmission shaft 213 and a transmission gear 214, the transmission gear 214 is arranged on the power transmission shaft 213, the power transmission shaft 213 is connected with the swing bearing 212, the transmission gear 214 and the power transmission shaft 213 are driven to rotate by a power driving member, so as to drive the swing bearing 212 and the swing shaft 211 to rotate, and drive the sealing assembly 22 and the internal resistance and height detection assembly 23 mounted on the swing shaft 211 to rotate. Thus, the structure of the swing shaft 211 and the swing bearing 212 is used as the first rotary disc 21, the rotation accuracy of the first rotary disc 21 is higher, and the structure of the first rotary disc 21 is simpler and more reliable.

[0041] On the basis of the above embodiment, as an optional implementation manner, the first rotary disc 21 further comprises an electric slip ring assembly 24 arranged on the first rotary disc 21, and the electric slip ring assembly 24 is used for connecting and transmitting power and signals of electrical components of the first rotary disc 21. As an optional implementation manner, the internal resistance detector 60 can be connected with the internal resistance and height detection assembly 23 through the electric slip ring assembly 24.

[0042] On the basis of the above embodiment, as an optional implementation manner, in combination Figure 9 As shown, the battery cell feeding assembly comprises a battery cell conveying assembly 32 and a battery cell pushing assembly 33, the battery cell pushing assembly 33 is arranged on the rack 10 and does not rotate with the second rotary disc 31 when the second rotary disc 31 rotates; the battery cell conveying assembly 32 is connected with the second rotary disc 31, and the second rotary disc 31 can drive the battery cell conveying assembly 32 to rotate, when the battery cell conveying assembly 32 rotates to the position of the battery cell pushing assembly 33, the battery cell pushing assembly 33 can push the battery cell to be sealed into the first accommodating groove of the sealing assembly 22 through the battery cell conveying assembly 32, so that the sealing assembly 22 seals the battery cell, or push the sealed battery cell into the second accommodating groove of the internal resistance and height detection assembly 23, so that the internal resistance and height detection assembly 23 detects the internal resistance of the sealed battery cell. Thus, the battery cell conveying assembly 32 and the battery cell pushing assembly 33 can realize seamless connection between the previous process and the next process, which is beneficial to realize continuous processing and production of the battery cell and improve the efficiency of the battery cell production.

[0043] On the basis of the above embodiment, as an optional implementation manner, in combination Figure 9 and Figure 10As shown, the feeding turntable assembly 30 further comprises a battery cell conveying disc 34, which is arranged on the rack 10 through a support rod and does not rotate with the second turntable 31 when the second turntable 31 rotates. The battery cell conveying disc 34 is a circular ring, and is arranged around the outer periphery of the second turntable 31. The battery cell conveying disc 34 is provided with a baffle to prevent the battery cell from falling when the battery cell conveying assembly 32 drives the battery cell to rotate. The battery cell conveying disc 34 is provided with a third gap 341 on the side close to the sealing turntable assembly 20, and the third gap 341 is arranged close to the battery cell pushing assembly 33. The battery cell conveying disc 34 is used to place the battery cell. When the second turntable 31 drives the battery cell conveying assembly 32 to rotate, the battery cell conveying assembly 32 drives the battery cell to move along the battery cell conveying disc 34 to the third gap 341. The battery cell pushing assembly 33 drives the battery cell conveying assembly 32 to move towards the sealing turntable assembly 20, and pushes the battery cell into the first accommodating groove of the sealing assembly 22 or the second accommodating groove of the internal resistance and height detection assembly 23. Thus, by arranging the battery cell conveying disc 34, the battery cell can be conveniently conveyed, and the battery cell can be smoothly conveyed to the next process. By arranging the third gap, the battery cell pushing assembly 33 can smoothly push the battery cell on the battery cell conveying assembly 32 into the first accommodating groove of the sealing assembly 22 or the second accommodating groove of the internal resistance and height detection assembly 23.

[0044] On the basis of the above-mentioned embodiments, as an optional implementation manner, in combination with Figure 3 As shown, the side of the battery cell conveying disc 34, on which the third gap 341 is arranged, is projected in the vertical direction within the projection range of the sealing turntable assembly 20 in the vertical direction. Thus, when the battery cell moves along the battery cell conveying disc 34 to the third gap 341, the battery cell conveying assembly 32 can better cooperate with the sealing assembly 22 or the internal resistance and height detection assembly 23, clamps the battery cell, and makes the battery cell move more stably and avoids the battery cell from falling.

[0045] On the basis of the above-mentioned embodiments, as an optional implementation manner, in combination with Figure 11As shown, the cell pushing assembly 33 comprises a first pushing rod 331 and a fifth cam 332, the fifth cam 332 is arranged at one end of the first pushing rod 331 away from the rack 10, the first pushing rod 331 is movable in the horizontal direction to drive the fifth cam 332 to move towards the sealing turntable assembly 20, and the fifth cam 332 is used to abut against the cell transferring assembly 32 to drive the cell transferring assembly 32 to move in the horizontal direction and close to the sealing turntable assembly 20. The cell transferring assembly 32 comprises a second pushing rod 321, a third pushing rod 322, a cell fixing seat 323 and a cam follower 324, the cell fixing seat 323 is arranged on the second turntable 31, the cell fixing seat 323 is provided with a third accommodating groove for placing a cell, the third pushing rod 322 is arranged on the cell fixing seat 323 and can contact the cell in the third accommodating groove, the third pushing rod 322 is used to push the cell in the third accommodating groove, and the third pushing rod 322 is arranged perpendicularly to the second pushing rod 321, the first end of the second pushing rod 321 is connected with the third pushing rod 322 through the cell fixing seat 323, and the second end of the second pushing rod 321 is provided with the 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 pushing rod 321 arranged in the vertical direction. Thus, when the cam follower 324 rotates to abut against the fifth cam 332, the first pushing rod 331 can drive the cam follower 324 to move in the horizontal direction through the fifth cam 332, so as to drive the second pushing rod 321 and the third pushing rod 322 to move in the horizontal direction, and the cell in the cell fixing seat 323 is pushed out.

[0046] On the basis of the above-mentioned embodiments, as an optional implementation, the cell fixing seat 323 is further provided with a sliding groove for the movement of the second pushing rod 321, the sliding groove penetrates through the cell fixing seat 323, the third pushing rod 322 is provided with a reset elastic member 325, one end of the reset elastic member 325 abuts against the second pushing rod 321, and the other end of the reset elastic member 325 abuts against the third pushing rod 322. When the cam follower 324 drives the second pushing rod 321 to move in the horizontal direction, the second pushing rod 321 can move in the sliding groove to drive the third pushing rod 322 to move in the horizontal direction, and the third pushing rod 322 drives the second pushing rod 321 to move in the horizontal direction through the reset elastic member 325, so as to push the cell into the first accommodating groove of the sealing assembly 22 or the second accommodating groove of the internal resistance and height detection assembly 23. When the cam follower 324 is away from the fifth cam 332 (i.e. the cam follower 324 is not in contact with the fifth cam 332), the reset elastic member 325 in the compressed state drives the second pushing rod 321 and the third pushing rod 322 to reset, so as to facilitate the transfer of the next cell into the sealing turntable assembly 20.

[0047] On the basis of the above-mentioned embodiments, as an optional implementation, in combination with Figures 1 to 3As shown, the battery sealing device further comprises a CCD detection assembly 70 arranged on the rack 10 and located at the outer periphery of the second turntable 31, which is used for taking a photo of the sealed battery to reduce the error caused by manual detection. Specifically, the CCD detection assembly 70 comprises a detection camera 71 and a light source 72, both of which are arranged at the outer periphery of the second turntable 31. The detection camera 71 is used for taking a photo of the sealed battery, and the light source 72 is used for irradiating the battery to facilitate the photo detection of the detection camera. Thus, when the battery is sealed and transferred to the battery transfer tray 34, the CCD detection assembly 70 can take a photo of the sealed battery, and the sealed battery can be transferred to the next process after the detection is completed, which is beneficial to further improve the production efficiency of the battery.

[0048] The second aspect of the embodiment provides a battery sealing method. The battery is sealed by using the battery sealing device of the first aspect. The battery sealing method comprises the following steps:

[0049] In step S1, the battery to be sealed is placed on the loading turntable assembly. When the second turntable drives the battery to rotate to the loading station, the battery loading assembly pushes the battery to be sealed into the sealing assembly at the loading station, and the sealing assembly seals the battery to be sealed for the first time.

[0050] Specifically, the battery to be sealed can be placed on the battery transfer tray 34 by manual or mechanical hand. When the second turntable 31 rotates, the battery transfer assembly 32 is driven to rotate, and the battery to be sealed is moved. When the battery to be sealed rotates to the loading station E, the first sealing assembly 22A is located at the loading station A at this time. The battery transfer assembly 32 and the battery to be sealed are pushed into the first sealing assembly 22A by the battery pushing assembly 33, and the first sealing assembly 22A seals the battery to be sealed.

[0051] In step S2, the second turntable drives the battery sealed for the first time 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 sealed for the first time rotates to the loading station. The battery loading assembly pushes the battery sealed for the first time into the sealing assembly at the loading station again, and the next sealing assembly seals the battery sealed for the first time for the second time. The above operation is repeated until the battery is sealed.

[0052] Specifically, the sealed battery cell is transferred to the battery cell transfer tray 34, the second rotating disc 31 and the first rotating disc 21 rotate simultaneously, the first rotating disc 21 drives the sealing assembly 22 to rotate, when the second sealing assembly 22B rotates to the feeding station E, the second rotating disc 31 drives the sealed battery cell to rotate to the feeding station E as well, the battery cell pushing assembly 33 pushes the battery cell transfer assembly 32 again to move towards the sealing rotating disc assembly 20, the battery cell transfer assembly 32 and the sealed battery cell are pushed into the first accommodating groove of the second sealing assembly 22B, and the second sealing assembly 22B seals the sealed battery cell again. The above operation is repeated to sequentially seal, crimp and press the battery cell, and the sealing process of the battery cell is completed. Subsequently, the second rotating disc 31 and the first rotating disc 21 rotate simultaneously, the first rotating disc 21 drives the internal resistance and height detection assembly 23 to rotate, when the internal resistance and height detection assembly 23 rotates to the feeding station E, the second rotating disc 31 drives the crimped battery cell to rotate to the feeding station E as well, the battery cell pushing assembly 33 pushes the battery cell transfer assembly 32 again to move towards the sealing rotating disc assembly 20, the battery cell transfer assembly 32 and the crimped battery cell are pushed into the second accommodating groove of the internal resistance and height detection assembly 23 to detect the internal resistance and the total height, and the detected battery cell is transferred to the battery cell transfer tray 34 for discharging.

[0053] The battery sealing method provided in the embodiment can smoothly transfer the battery cell produced in the previous process to the sealing rotating disc assembly for sealing through cooperation of the feeding rotating disc assembly and the sealing rotating disc assembly, can smoothly connect the multiple sealing processes of the battery cell, can realize continuous processing and production of the battery cell, and is favorable for improving the efficiency of the battery cell production.

[0054] In the embodiment, when the battery cell is transferred to the battery cell transfer tray 34 after each sealing process is completed, the CCD detection assembly 70 can take a photo of the sealed battery cell to timely remove the defective battery cell, and avoid the defective battery cell from being transferred to the next process.

[0055] It should be noted that the person skilled in the art can set the size of the third gap 341 according to the actual situation, as long as the third gap 341 can play a role in avoiding the battery cell pushing assembly 33 pushing the battery cell transfer assembly 32 to move towards the sealing rotating disc assembly 20, and smoothly transferring the battery cell in the sealing assembly 22 and the internal resistance and height detection assembly 23 to the battery cell transfer tray 34. As an optional implementation, the mechanical hand can be used to assist in transferring the battery cell after the battery cell in the sealing assembly 22 and the internal resistance and height detection assembly 23 is transferred to the battery cell transfer tray 34, which is convenient for the subsequent rotation of the battery cell driven by the second rotating disc.

[0056] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. A battery closure device, characterized by The utility model relates to a battery sealing device, including: a rack; a sealing turntable assembly, the sealing turntable assembly includes a first turntable, a sealing assembly and an internal resistance and height detection assembly, the first turntable is rotatably arranged on the rack, a plurality of sealing assemblies are arranged along the circumference of the first turntable, the sealing assembly includes concentrically arranged first sealing guide pillar, second sealing guide pillar and sealing compression die, the sealing compression die and the second sealing guide pillar have first accommodating groove for placing the battery to be sealed between them, the first sealing guide pillar, second sealing guide pillar and sealing compression die cooperate to seal the battery to be sealed; a feeding turntable assembly, the feeding turntable assembly includes a second turntable and a battery feeding assembly, the second turntable is arranged on one side of the first turntable, the second turntable is rotatably arranged on the rack, and the battery feeding assembly can push the battery to be sealed into the first accommodating groove for sealing; the battery feeding assembly includes a battery conveying assembly and a battery pushing assembly, the battery pushing assembly is arranged on the rack, the battery conveying assembly is connected with the second turntable, the second turntable can drive the battery conveying assembly to rotate, when the battery conveying assembly rotates to the battery pushing assembly, the battery pushing assembly can push the battery to be sealed into the sealing assembly through the battery conveying assembly, or can push the sealed battery into the internal resistance and height detection assembly.

2. The battery closure of claim 1, wherein the sealing assembly further includes a mounting seat, the mounting seat is provided with concentric first through hole, second through hole and third through hole, the first sealing guide pillar is arranged on the mounting seat through the first through hole, the sealing compression die is detachably connected on the first sealing guide pillar, the second sealing guide pillar 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 compression die includes a forming punch and a battery holding die, the battery holding die is installed above the second through hole, the second sealing guide pillar can push the battery to be sealed through the second through hole, so that the battery to be sealed is located in the battery holding die, and the first sealing guide pillar drives the forming punch to move towards the battery to be sealed to seal the battery to be sealed.

3. The battery closure of claim 2, wherein, the utility model further includes first driving part and second driving part, the first driving part and the second driving part are arranged on the rack, the first sealing guide pillar is connected with the first driving part, the first driving part is used for driving the first sealing guide pillar to drive the sealing compression die to move towards the battery to be sealed, the second sealing guide pillar is connected with the second driving part, and the second driving part is used for driving the second sealing guide pillar to drive the battery to be sealed to pass through the second through hole and move to the sealing compression die.

4. The battery closure of claim 1, wherein, The inner resistance and height detection assembly is used for inner resistance detection and total height detection of the sealed battery, and a plurality of the sealing assemblies and the inner resistance and height detection assembly are arranged along the circumference of the first rotary disc; the first rotary disc comprises a rotary shaft and a rotary bearing connected with each other, the rotary shaft is provided with a plurality of mounting positions along the circumference thereof, and the plurality of sealing assemblies and the inner resistance and height detection assembly are arranged on the rotary shaft through the mounting positions.

5. The battery closure of claim 1, wherein, The upper feeding rotary disc assembly further comprises a battery transfer disc for placing the batteries, the battery transfer disc is arranged on the rack and surrounds the outer periphery of the second rotary disc, the battery transfer disc is provided with a baffle, one side of the battery transfer disc close to the sealing rotary disc assembly is provided with a third gap, and the battery transfer disc assembly can drive the batteries to move along the battery transfer disc to the third gap, so that the battery pushing assembly can drive the battery transfer assembly to move towards the sealing rotary disc assembly and push the batteries into the sealing assembly or the inner resistance and height detection assembly.

6. The battery closure of claim 1, wherein, The battery transfer assembly comprises a second push rod, a third push rod, a battery fixing seat and a cam follower, the battery fixing seat is arranged on the second rotary disc, the battery fixing seat is provided with a third accommodating groove for placing the batteries, the third push rod is arranged on the battery fixing seat, the third push rod is used for pushing the batteries in the third accommodating groove, the third push rod is arranged vertically with the second push rod, the first end of the second push rod is connected with the third push rod through the battery fixing seat, and the cam follower is arranged on the second end of the second push rod.

7. The battery closure of claim 6, wherein, The battery pushing assembly comprises a first push rod and a fifth cam, the fifth cam is arranged on the first push rod, the first push rod is movable towards the sealing rotary disc assembly, and the fifth cam is abuttable with the cam follower. The battery transfer assembly further comprises a reset elastic member, the reset elastic member is arranged on the third push rod, one end of the reset elastic member is abutted with the second push rod, and the other end of the reset elastic member is abutted with the third push rod.

8. The battery closure of claim 1, wherein, The battery sealing device further comprises a CCD detection assembly, the CCD detection assembly is arranged on the rack and located at the outer periphery of the second rotary disc, and the CCD detection assembly is used for detecting the sealed batteries.

9. A method of sealing a battery, characterized by The battery sealing device is used for sealing batteries, and comprises the following steps: placing the batteries to be sealed on the upper feeding rotary disc assembly, when the second rotary disc drives the batteries to be sealed to rotate to the feeding station, the battery feeding assembly pushes the batteries to be sealed into the sealing assembly at the feeding station, and the sealing assembly performs first sealing on the batteries to be sealed; The second rotating disc drives the first sealed battery cell to rotate, and meanwhile, the first rotating disc drives the sealing assembly to rotate. When the next sealing assembly rotates to the feeding station, the first sealed battery cell rotates to the feeding station. The battery cell feeding assembly pushes the first sealed battery cell into the sealing assembly at the feeding station again. The next sealing assembly seals the first sealed battery cell for the second time. The above operation is repeated until the battery cell is sealed.

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