Battery cell edge sealing mechanism for lithium battery packaging production line

Abstract

The utility model relates to the technical field of lithium battery packaging, in particular to a battery cell edge sealing mechanism for a lithium battery packaging production line. The machine base is provided with an upper top sealing block and a lower top sealing block, the upper top sealing block and the lower top sealing block are used for abutting against the upper side edge and the lower side edge of an aluminum plastic film correspondingly, the machine base is provided with a first driving assembly used for driving the upper top sealing block and the lower top sealing block to vertically slide, and the lower top sealing block is provided with a mounting base; a centering block and two opposite horizontal limiting blocks are arranged at the top of the mounting seat, the horizontal limiting blocks extend to be provided with supporting blocks, the upper top sealing block is provided with a vertical limiting block, and limiting openings for placing tabs are formed among the vertical limiting block, the horizontal limiting blocks, the centering block and the supporting blocks; the second driving assembly is arranged on the upper top sealing block and used for driving the horizontal limiting block to slide close to the centering block. According to the invention, the tab is ensured to be centered in the top sealing process, so that the sealing effect and the consistency of the battery cell are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packaging, in particular to a battery cell edge sealing mechanism for a lithium battery packaging production line. Background Art

[0002] In the production process of lithium batteries, it is usually necessary to package the battery cells. In the production process of traditional lithium battery cells, the technology and method of battery cell packaging are usually to first cut the rolled aluminum-plastic film into sheets manually or semi-automatically, then punch holes and cut the remaining edges to form a packaging bag, then manually put the battery cell into the packaging bag, fold the packaging bag to wrap the battery cell, and then transfer the packaging bag and the battery cell to the top sealing and side sealing machine to complete the top and side packaging. When performing the top sealing, since the battery cell ears extend out of the aluminum-plastic film, the battery cell ears are easily offset by force during the compression and packaging process of the aluminum-plastic film on the upper and lower sides, resulting in the battery cell ear displacement phenomenon, which affects the sealing effect and consistency of the battery cell and needs to be solved urgently. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present application provides a cell edge sealing mechanism for a lithium battery packaging production line, which aims to ensure that the tab is centered during the top sealing packaging process to improve the sealing effect and consistency of the cell.

[0004] The above invention objectives of the present application are achieved through the following technical solutions:

[0005] A work station fixture, which is used to place the battery cells to be packaged;

[0006] A machine base, the machine base is arranged on one side of the station fixture, the machine base is vertically slidably provided with an upper top sealing block and a lower top sealing block, the upper top sealing block and the lower top sealing block are respectively used to abut against the upper and lower sides of the aluminum-plastic film of the packaged battery cell, and the machine base is provided with a first driving component for driving the upper top sealing block and the lower top sealing block to slide vertically;

[0007] A mounting seat is provided on one side of the lower top sealing block, a centering block is provided on the top of the mounting seat and two relative horizontal limit blocks are provided for horizontal sliding, the centering block is located between the two horizontal limit blocks, and a support block is extended from the horizontal limit block. When the battery cell to be packaged is located at the work station fixture, the support block is used to support the pole ear of the battery cell to be packaged, and the upper top sealing block is provided with a vertical limit block. When the upper top sealing block and the lower top sealing block abut against each other, a limit opening for placing the pole ear is formed between the vertical limit block, the horizontal limit block, the centering block and the support block;

[0008] The second driving component is arranged on the upper top sealing block. When the upper top sealing block slides close to the lower top sealing block, the second driving component is used to drive the horizontal limit block to slide close to the center block.

[0009] By adopting the above technical scheme, when the battery cell to be packaged is located on the work station fixture and the battery cell pole ear is located on the support block, the first driving component drives the upper top sealing block and the lower top sealing block to slide close to each other until they respectively abut against the upper and lower side edges of the aluminum-plastic film, so as to complete the top sealing process. During the pressing process, the second driving component drives the horizontal limit block to abut against the outer side edge of the pole ear close to the centering block, so that the two pole ears are centered in the direction of the centering block, that is, the internal direction, so that the pole ear is positioned in the limit opening formed by the vertical limit block, the horizontal limit block, the centering block and the support block, and the positioning of the pole ear is completed, so that the pole ear is not easily offset by force during the pressing and packaging process of the aluminum-plastic film on the upper and lower sides, thereby improving the sealing effect and consistency of the battery cell.

[0010] In a preferred example, the present application can be further configured as follows: the first drive component includes a first electric cylinder and a second electric cylinder, the first electric cylinder is vertically fixedly installed on the top of the machine base, the piston rod of the first electric cylinder is fixedly connected to the upper top sealing block, the second electric cylinder is vertically fixedly installed on the bottom of the machine base, and the piston rod of the second electric cylinder is fixedly connected to the lower top sealing block.

[0011] By adopting the above technical solution, under the action of the first electric cylinder and the second electric cylinder, the vertical sliding function of the upper top sealing block and the lower top sealing block can be realized.

[0012] In a preferred example, the present application can be further configured as follows: the second drive component includes an abutment block, the abutment block is arranged on the upper top sealing block, the side of the horizontal limit block away from the centering block is an inclined surface, and the abutment block is located directly above the inclined surface and is used to abut the inclined surface.

[0013] By adopting the above technical solution, when the abutment block abuts downward against the inclined surface, a component force for sliding in a direction close to the center block can be provided to the horizontal limit block, thereby synchronously realizing the function of driving the horizontal limit block to slide.

[0014] In a preferred example, the present application may be further configured as follows: a pulley is rotatably mounted on the bottom of the abutment block, and the pulley is used to abut against the inclined surface.

[0015] By adopting the above technical solution, a pulley is set, and when it abuts against the inclined surface of the horizontal limit block, the sliding friction between the two can be converted into rolling friction, thereby reducing the wear of the horizontal limit block and increasing the service life of the components.

[0016] In a preferred example, the present application can be further configured as follows: a mounting slot is provided on the mounting seat at a position corresponding to the horizontal limit block, a guide rod is fixedly installed on the mounting slot along the sliding direction of the horizontal limit block, the bottom of the horizontal limit block slides through the guide rod, the guide rod sleeve is provided with a spring, one end of the spring is fixedly connected to the bottom of the horizontal limit block and the other end is fixedly connected to one side of the mounting slot close to the center block.

[0017] By adopting the above technical solution, in the process of the horizontal limit block moving towards the center block, the spring can play a buffering role for the horizontal limit block, reduce the impact of the horizontal limit block on the pole ear, and reduce the possibility of damage to the pole ear. After completing the pressing process, the spring can provide a restoring force to drive the horizontal limit block to reset, which can improve the convenience of operation.

[0018] In a preferred example, the present application may be further configured as follows: the upper top sealing block and the lower top sealing block are both provided with probes, and the two probes are used to detect the temperature of the upper top sealing block and the lower top sealing block respectively.

[0019] By adopting the above technical solution, it is convenient for workers to detect and control the temperature of the pressed aluminum-plastic film.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. When the battery cell to be packaged is located on the work station fixture and the battery cell pole ear is located on the supporting block, the first driving component drives the upper top sealing block and the lower top sealing block to slide close to each other until they respectively abut against the upper and lower side edges of the aluminum-plastic film, so as to complete the top sealing process. During the pressing process, the second driving component drives the horizontal limit block to abut against the outer side edge of the pole ear in the direction of the centering block, so that the two pole ears are close to the centering block, that is, the inner direction is centered, so that the pole ear is positioned in the limit opening formed by the vertical limit block, the horizontal limit block, the centering block and the supporting block, and the positioning of the pole ear is completed, so that the pole ear is not easily offset by force during the pressing and packaging process of the aluminum-plastic film on the upper and lower sides, thereby improving the sealing effect and consistency of the battery cell.

[0022] 2. When the horizontal limit block moves toward the center block, the spring can buffer the horizontal limit block, reduce the impact of the horizontal limit block on the tab, and reduce the possibility of damage to the tab. After the pressing process is completed, the spring can provide a restoring force to drive the horizontal limit block to reset, which can improve the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a cell edge sealing mechanism of a lithium battery packaging production line in one embodiment of the present application;

[0024] Figure 2 It is another overall structural schematic diagram of the cell edge sealing mechanism of the lithium battery packaging production line in one embodiment of the present application;

[0025] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the middle T part;

[0026] Figure 4 It is a structural schematic diagram of a mounting base and a second driving assembly in one embodiment of the present application;

[0027] Figure 5 It is a partial cross-sectional schematic diagram of an embodiment of the present application when an upper top sealing block and a lower top sealing block abut against each other.

[0028] Reference numerals: I1, machine base; I2, battery cell; I3, work station fixture; I4, upper top sealing block; I5, lower top sealing block; I6, aluminum-plastic film; I7, first electric cylinder; I8, second electric cylinder; I9, mounting seat; I10, centering block; I11, horizontal limit block; I12, support block; I13, pole ear;

[0029] I14, vertical limit block; I15, limit opening; I16, second drive assembly; I161, abutment block; I162, inclined surface; I163, pulley; I17, mounting groove; I18, guide rod; I19, spring; I20, pressing module; I21, heating module; I22, probe. DETAILED DESCRIPTION

[0030] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0031] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0032] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0033] The following describes a cell edge sealing mechanism for a lithium battery packaging production line of the present application with reference to the accompanying drawings.

[0034] like Figure 1 and Figure 2 As shown, the cell edge sealing mechanism of the lithium battery packaging production line includes a machine base I1 and a station fixture I3 for placing the cell to be packaged I2, the machine base I1 is arranged on one side of the station fixture I3, the machine base I1 is vertically slidably provided with an upper top sealing block I4 and a lower top sealing block I5, the upper top sealing block I4 and the lower top sealing block I5 are respectively used to abut against the upper and lower sides of the aluminum-plastic film I6 of the cell to be packaged I2, the machine base I1 is provided with a first driving component for driving the upper top sealing block I4 and the lower top sealing block I5 to slide vertically, specifically, the first driving component includes a first electric cylinder I7 and a second electric cylinder I8, the first electric cylinder I7 is vertically fixed It is fixedly installed on the top of the machine base I1, the piston rod of the first electric cylinder I7 is fixedly connected to the upper top sealing block I4, the second electric cylinder I8 is vertically fixedly installed on the bottom of the machine base I1, and the piston rod of the second electric cylinder I8 is fixedly connected to the lower top sealing block I5. Under the action of the first electric cylinder I7 and the second electric cylinder I8, the vertical sliding function of the upper top sealing block I4 and the lower top sealing block I5 can be realized, so that when the battery cell I2 to be packaged is located at the station fixture I3, the first driving component can drive the upper top sealing block I4 and the lower top sealing block I5 to slide close to each other until they respectively abut against the upper and lower sides of the aluminum-plastic film I6 to complete the top sealing process;

[0035] like Figure 3 and Figure 4As shown, in order to prevent the pole ear I13 from shifting during the pressing and packaging process, a mounting seat I9 is ​​provided on one side of the lower top sealing block I5, a centering block I10 is provided on the top of the mounting seat I9, and two relative horizontal limit blocks I11 are provided for horizontal sliding, the centering block I10 is located between the two horizontal limit blocks I11, and the horizontal limit block I11 is extended with a support block I12. When the battery cell I2 to be packaged is located at the work station fixture I3, the support block I12 is used to support the pole ear I13 of the battery cell I2 to be packaged, and the upper top sealing block I4 is provided with a vertical limit block I14. When the upper top sealing block I4 and the lower top sealing block I5 abut against each other, a limit opening I15 for placing the pole ear I13 is formed between the vertical limit block I14, the horizontal limit block I11, the centering block I10 and the support block I12. The second driving component I16 is used to drive the horizontal limit block I11 to slide close to the center block I10 when the upper top sealing block I4 slides close to the lower top sealing block I5. During the pressing process, the second driving component I16 drives the horizontal limit block I11 to abut the outer edge of the pole ear I13 close to the center block I10, so that the two pole ears I13 are centered in the direction of the center block I10, that is, the internal direction, so that the pole ear I13 is positioned in the limit opening I15 formed by the vertical limit block I14, the horizontal limit block I11, the center block I10 and the support block I12, and the positioning of the pole ear I13 is completed, so that the pole ear I13 is not easily offset by force during the pressing and packaging process of the aluminum-plastic film I6 on the upper and lower sides, thereby improving the sealing effect and consistency of the battery cell I2.

[0036] Among them, the second driving component I16 includes an abutment block I161, which is arranged on the upper top sealing block I4, and the side of the horizontal limit block I11 away from the centering block I10 is an inclined surface I162. The abutment block I161 is located directly above the inclined surface I162 and is used to abut the inclined surface I162. When the abutment block I161 abuts downward on the inclined surface I162, it can provide the horizontal limit block I11 with a component of force for sliding in the direction close to the centering block I10, thereby synchronously realizing the function of driving the horizontal limit block I11 to slide.

[0037] Furthermore, a pulley I163 is rotatably installed at the bottom of the abutment block I161, and the pulley I163 is used to abut the inclined surface I162. By setting the pulley I163, when it abuts against the inclined surface I162 of the horizontal limit block I11, the sliding friction between the two can be converted into rolling friction, thereby reducing the wear of the horizontal limit block I11 and improving the service life of the components.

[0038] In one embodiment, if Figure 5As shown, a mounting slot I17 is provided at a position of the mounting seat I9 corresponding to the horizontal limit block I11, and a guide rod I18 is fixedly installed in the mounting slot I17 along the sliding direction of the horizontal limit block I11. The bottom of the horizontal limit block I11 slides through the guide rod I18, and the guide rod I18 is sleeved with a spring I19, one end of the spring I19 is fixedly connected to the bottom of the horizontal limit block I11 and the other end is fixedly connected to a side of the mounting slot I17 close to the centering block I10. In the process of the horizontal limit block I11 moving in the direction close to the centering block I10, the spring I19 can buffer the horizontal limit block I11, reduce the impact of the horizontal limit block I11 on the tab I13, and reduce the possibility of damage to the tab I13. After the pressing process is completed, the spring I19 can provide a restoring force to drive the horizontal limit block I11 to reset, thereby improving the convenience of operation.

[0039] It should be noted that if Figure 2 As shown, the upper top sealing block I4 and the lower top sealing block I5 both include a pressing module I20 and a heating module I21. The pressing module I20 is used for pressing the aluminum-plastic film I6, and the heating module I21 is used for heating the pressing module I20. The heating module I21 can be a common heating device such as an electric heating block or an electric heating wire. By setting the heating module I21, the hot pressing function of the pressing module I20 can be realized, and the upper top sealing block I4 and the lower top sealing block I5 are both provided with probes I22. The two probes I22 are respectively used to detect the temperatures of the upper top sealing block I4 and the lower top sealing block I5, so that the staff can detect and control the temperature of the pressed aluminum-plastic film I6.

[0040] The implementation principle of the cell edge sealing mechanism of a lithium battery packaging production line in the embodiment of the present application is as follows: first, the cell I2 to be packaged is placed on the work station fixture I3 and the tab I13 of the cell I2 is placed on the support block I12, and the upper top sealing block I4 and the lower top sealing block I5 are driven by the first driving component to slide close to each other. At the same time, during the pressing process, the second driving component I16 drives the horizontal limit block I11 to slide close to the center block I10 until the upper top sealing block I4 and the lower top sealing block I5 are respectively in contact with the aluminum-plastic film. On the upper and lower sides of I6, the horizontal limit block I11 abuts against the outer side of the pole ear I13, so that the two pole ears I13 are centered close to the center block I10, until they are located in the limit opening I15 formed by the vertical limit block I14, the horizontal limit block I11, the center block I10 and the support block I12, thereby completing the positioning of the pole ear I13, so that the pole ear I13 is not easily displaced by the force during the compression packaging process of the aluminum-plastic film I6 on the upper and lower sides, thereby improving the sealing effect and consistency of the battery cell I2.

[0041] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A cell edge sealing mechanism for a lithium battery packaging production line, characterized in that: include: A work station fixture (I3), wherein the work station fixture (I3) is used to place the battery cell (I2) to be packaged; A machine base (I1), wherein the machine base (I1) is arranged on one side of the work station fixture (I3), and the machine base (I1) is provided with an upper top sealing block (I4) and a lower top sealing block (I5) for vertical sliding movement, wherein the upper top sealing block (I4) and the lower top sealing block (I5) are respectively used to abut against the upper and lower sides of the aluminum-plastic film (I6) of the packaged battery cell (I2), and the machine base (I1) is provided with a first driving component for driving the upper top sealing block (I4) and the lower top sealing block (I5) to slide vertically, and a mounting seat (I9) is arranged on one side of the lower top sealing block (I5), and a centering block (I10) is arranged on the top of the mounting seat (I9) and two relative horizontal limit blocks (I11) are arranged for horizontal sliding movement, and the The centering block (I10) is located between the two horizontal limit blocks (I11); the horizontal limit block (I11) is extended with a support block (I12); when the battery cell (I2) to be packaged is located on the work station fixture (I3), the support block (I12) is used to support the tab (I13) of the battery cell (I2) to be packaged; the upper top sealing block (I4) is provided with a vertical limit block (I14); when the upper top sealing block (I4) and the lower top sealing block (I5) are in contact with each other, a limit opening (I15) for placing the tab (I13) is formed between the vertical limit block (I14), the horizontal limit block (I11), the centering block (I10) and the support block (I12); A second driving component (I16), wherein the second driving component (I16) is arranged on the upper top sealing block (I4), and when the upper top sealing block (I4) slides close to the lower top sealing block (I5), the second driving component (I16) is used to drive the horizontal limit block (I11) to slide close to the center block (I10).

2. A cell edge sealing mechanism for a lithium battery packaging production line as claimed in claim 1, characterized in that: The first driving assembly comprises a first electric cylinder (I7) and a second electric cylinder (I8), wherein the first electric cylinder (I7) is vertically fixedly installed on the top of the machine base (I1), and the piston rod of the first electric cylinder (I7) is fixedly connected to the upper top sealing block (I4); the second electric cylinder (I8) is vertically fixedly installed on the bottom of the machine base (I1), and the piston rod of the second electric cylinder (I8) is fixedly connected to the lower top sealing block (I5).

3. A cell edge sealing mechanism for a lithium battery packaging production line as claimed in claim 1, characterized in that: The second driving component (I16) comprises a contact block (I161), wherein the contact block (I161) is arranged on the upper top sealing block (I4), and a side of the horizontal limit block (I11) away from the centering block (I10) is an inclined surface (I162), and the contact block (I161) is located directly above the inclined surface (I162) and is used to contact the inclined surface (I162).

4. A cell edge sealing mechanism for a lithium battery packaging production line as claimed in claim 3, characterized in that: A pulley (I163) is rotatably mounted on the bottom of the abutment block (I161), and the pulley (I163) is used to abut against the inclined surface (I162).

5. A cell edge sealing mechanism for a lithium battery packaging production line as claimed in claim 1, characterized in that: The mounting seat (I9) is provided with a mounting groove (I17) at a position corresponding to the horizontal limit block (I11); a guide rod (I18) is fixedly installed in the mounting groove (I17) along the sliding direction of the horizontal limit block (I11); the bottom of the horizontal limit block (I11) slides through the guide rod (I18); the guide rod (I18) is sleeved with a spring (I19); one end of the spring (I19) is fixedly connected to the bottom of the horizontal limit block (I11) and the other end is fixedly connected to a side of the mounting groove (I17) close to the centering block (I10).

6. A cell edge sealing mechanism for a lithium battery packaging production line as claimed in claim 1, characterized in that: The upper top sealing block (I4) and the lower top sealing block (I5) are both provided with probes (I22), and the two probes (I22) are used to detect the temperature of the upper top sealing block (I4) and the lower top sealing block (I5) respectively.

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