Pole piece material box

Abstract

The utility model relates to a pole piece material box which is used for containing pole pieces and comprises a shell, openings are formed in the two ends of the shell in the height direction, a containing cavity is formed in the shell, and the pole pieces are placed in the containing cavity through one of the openings. The gasket unit comprises at least one gasket, the at least one gasket is detachably arranged on the inner wall of the shell, and the projection shape of the gasket in the thickness direction of the gasket is a trapezoid; when the pole piece is contained in the containing cavity, the pole piece makes contact with the at least one gasket, and the pole piece can be limited in the containing cavity through the at least one gasket. According to the utility model, the stability of the pole pieces in the carrying and lamination processes can be effectively improved, the phenomenon of polishing of the pole pieces in the lamination process can be effectively reduced, and the production efficiency and the product quality can be further improved; the pole piece material box is low in manufacturing cost, so that the use cost can be reduced, the material box is convenient to maintain, the service life of the pole piece can be prolonged, and the pole piece material box is easy to popularize and apply.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery pole piece technical field especially is a pole piece material box. BACKGROUND

[0002] In the battery manufacturing industry, the manufacturing and handling of pole pieces (also known as electrode pieces) is a critical process. Pole pieces are an important component of batteries, and their quality directly affects the performance and lifespan of the battery. During the manufacturing process of pole pieces, multiple pole pieces need to be stacked together, a process known as stacking. The stacking process of pole pieces is a key step in battery manufacturing, mainly used for assembling the battery cells. However, during the stacking process, the problem of pole piece throwing often occurs, that is, the pole pieces fall or shift from the material box during handling and stacking, which not only reduces production efficiency but also affects product quality. In the prior art, the main solution is to reduce the inner diameter of the material box to reduce the movement space of the pole pieces in the material box, thereby reducing the displacement amplitude of the pole pieces caused by blowing and other reasons.

[0003] The deficiency of the prior art is that although the existing solution can reduce the problem of pole piece throwing to some extent, there are still some problems and limitations. The existing solution mainly focuses on reducing the movement amplitude of the pole pieces in the material box, and does not fundamentally solve the stability problem of the pole pieces during handling and stacking. SUMMARY

[0004] Therefore, the utility model wants to overcome the deficiency in the prior art, provide a pole piece material box, by setting the gasket with wear-resistant gradient on the inner wall of the material box, can effectively improve the stability of the pole piece during handling and stacking, effectively reduce the throwing phenomenon of the pole piece during stacking, the manufacturing cost is low, thereby can reduce the use cost of the material box, facilitate the maintenance of the material box, and can prolong the service life of the pole piece, easy to promote and apply.

[0005] To solve the above technical problems, the utility model provides a pole piece material box for accommodating pole pieces, comprising,

[0006] A shell has openings at both ends in the height direction, and the inside of the shell has a receiving cavity. The pole pieces are placed into the receiving cavity through one of the openings.

[0007] The gasket unit includes at least one gasket, which is detachably arranged on the inner wall of the shell. The projection shape of the gasket along its thickness direction is trapezoidal. When the pole pieces are accommodated in the receiving cavity, the pole pieces are in contact with at least one gasket, and the pole pieces can be limited in the receiving cavity by at least one gasket.

[0008] In an embodiment of the utility model, still include the bottom support plate, the bottom support plate is connected in another opening of the shell, the bottom support plate with the shell cooperation forms the accommodation cavity.

[0009] In an embodiment of the utility model, the shell is equipped with the observation port, the observation port includes at least one observation hole arranged in the lateral wall of the shell, a through hole is arranged on the gasket at the position opposite to the observation hole, and the projection area of the through hole in the horizontal direction is less than or equal to the projection area of the observation hole in the horizontal direction.

[0010] In an embodiment of the utility model, the shell is further provided with a tab receiving portion, the tab receiving portion is arranged protruding away from the accommodation cavity along one of the lateral walls of the shell, and the tab of the pole piece can be received in the tab receiving portion.

[0011] In an embodiment of the utility model, the shell includes a first lateral wall, a second lateral wall, a third lateral wall and a fourth lateral wall connected in sequence, the first lateral wall, the second lateral wall, the third lateral wall and the fourth lateral wall surround to form the accommodation cavity, and the projection of the accommodation cavity along the height direction is a rectangle; wherein the first lateral wall and the third lateral wall are oppositely arranged, and the second lateral wall and the fourth lateral wall are oppositely arranged.

[0012] In an embodiment of the utility model, the gasket unit includes a first gasket, a second gasket, a third gasket and a fourth gasket, the first gasket is arranged on the first lateral wall, the second gasket is arranged on the second lateral wall, the third gasket is arranged on the third lateral wall, and the fourth gasket is arranged on the fourth lateral wall.

[0013] In an embodiment of the utility model, the shell is further provided with an exhaust passage, the exhaust passage is arranged extending along the height direction of the shell, and the exhaust passage includes at least one groove structure arranged in the accommodation cavity.

[0014] In an embodiment of the utility model, the shell is provided with a mounting hole, the gasket is provided with a mounting protrusion matched with the mounting hole, the mounting protrusion is embedded in the mounting hole, so as to assemble the gasket and the shell.

[0015] In an embodiment of the utility model, the thickness of the gasket is 1.09-1.68mm.

[0016] In an embodiment of the utility model, the material of the gasket is polytetrafluoroethylene.

[0017] The above technical scheme of the utility model has the following advantages compared with the prior art:

[0018] The utility model relates to a kind of pole piece material box, with shell and gasket unit, shell has opening along height direction, pole piece can be placed in shell by opening, gasket unit includes at least one gasket of setting in shell inner wall, the projection shape of gasket along its thickness direction is trapezoidal, so that the end of gasket close to shell opening has inclined plane, can facilitate operator to place pole piece into shell, and, by setting the gasket structure, the pole piece placed in shell can be effectively limited, so that the stability of pole piece in carrying and laminating process can be effectively improved, effectively reduce pole piece in laminating process The phenomenon of throwing piece, in turn, it can also improve production efficiency and product quality;The pole piece material box of the utility model has low manufacturing cost, to reduce use cost, facilitate material box maintenance, and can prolong the service life of pole piece, easy to promote and application. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further detailed, wherein.

[0020] Figure 1 It is the whole structure schematic diagram of preferred embodiment of the utility model.

[0021] Figure 2 It is the structure schematic diagram of shell of preferred embodiment of the utility model.

[0022] Figure 3 It is the first view structure schematic diagram of gasket of preferred embodiment of the utility model.

[0023] Figure 4 It is the second view structure schematic diagram of gasket of preferred embodiment of the utility model.

[0024] Figure 5 It is the overhead structure schematic diagram of the whole structure of preferred embodiment of the utility model.

[0025] Description of the Drawings: 1, shell;10, observation hole;101, first side wall;102, second side wall;103, third side wall;104, fourth side wall;11, pole lug accommodating portion;12, mounting hole;13, reinforcing rib plate;20, gasket;21, through hole;22, mounting boss;201, first gasket;202, second gasket;203, third gasket;204, fourth gasket;31, first recess;32, second recess;33, third recess;34, fourth recess. DETAILED DESCRIPTION

[0026] The utility model makes further illustration to the utility model with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation to the utility model.

[0027] Referring to Figures 1 to 5 The utility model discloses a pole piece box for accommodating pole pieces.

[0028] The pole piece box comprises a shell 1, the shell has openings at both ends in the height direction, and the interior of the shell has a receiving cavity, and the pole pieces can be placed into the receiving cavity through one of the openings.

[0029] The pole piece box further comprises a gasket unit, the gasket unit comprises at least one gasket 20, the at least one gasket 20 is detachably arranged on the inner wall of the shell 1, and the gasket 20 is attached to at least one side of the inner wall of the shell 1.

[0030] Furthermore, the projection shape of the at least one gasket 20 along its own thickness direction is trapezoidal, and one end of the gasket 20 close to the opening has a slope, so that the operator can conveniently place the pole pieces into the receiving cavity.

[0031] When the pole pieces are accommodated in the receiving cavity, the edges of the pole pieces can abut against the at least one gasket 20. In this way, the pole pieces can be limited in the receiving cavity by the at least one gasket 20.

[0032] Therefore, the pole piece box of the utility model is provided with a shell and a gasket unit, the shell has openings in the height direction, the pole pieces can be placed into the shell through the openings, the gasket unit comprises at least one gasket arranged on the inner wall of the shell, the projection shape of the gasket along its own thickness direction is trapezoidal, so that one end of the gasket close to the opening of the shell has a slope, which can facilitate the operator to place the pole pieces into the shell, and through the gasket structure, the pole pieces placed in the shell can be effectively limited, so that the stability of the pole pieces during the carrying and stacking process can be effectively improved, the phenomenon of pole pieces being thrown during the stacking process can be effectively reduced, and the production efficiency and product quality can be further improved. The pole piece box of the utility model has low manufacturing cost, so that the use cost can be reduced, the maintenance of the box is facilitated, the service life of the pole pieces can be prolonged, and the utility model is easy to popularize and apply.

[0033] As a preferred embodiment, the pole piece box further comprises a bottom supporting plate, the bottom supporting plate is detachably connected to the other opening of the shell 1, so that the bottom supporting plate cooperates with the shell 1 to form the receiving cavity.

[0034] In order to facilitate the operator to observe the condition of the pole piece in the pole piece box, the shell 1 is provided with an observation port, which comprises at least one observation hole 10 arranged on the side wall of the shell, and a through hole 21 is arranged on the gasket 20 at a position opposite to the observation hole 10.

[0035] The projection area of the through hole 21 in the horizontal direction is less than or equal to the projection area of the observation hole 10 in the horizontal direction.

[0036] As a preferred embodiment, the observation hole 10 is provided with a plurality of observation holes 10, which are arranged at intervals along the height direction of the shell, and the observation hole 10 is arranged along the horizontal direction, so as to facilitate the operator to observe the pole piece through the observation hole 10.

[0037] Further, the shell 1 is also provided with a lug receiving portion 11, which is arranged protruding away from the accommodating cavity along one of the side walls of the shell 1, so that the lug of the pole piece can be received in the lug receiving portion 11, thereby effectively avoiding the lug of the pole piece being pressed and damaged.

[0038] In detail, the shell 1 comprises a first side wall 101, a second side wall 102, a third side wall 103 and a fourth side wall 104 connected in sequence, and the first side wall 101, the second side wall 102, the third side wall 103 and the fourth side wall 104 surround to form the accommodating cavity. The projection of the accommodating cavity in the height direction is rectangular. Among them, the first side wall 101 and the third side wall 103 are arranged opposite to each other, and the second side wall 102 and the fourth side wall 104 are arranged opposite to each other.

[0039] As a preferred embodiment, the gasket unit comprises a first gasket 201, a second gasket 202, a third gasket 203 and a fourth gasket. Specifically, the first gasket 201 is arranged on the first side wall 101, the second gasket 202 is arranged on the second side wall 102, the third gasket 203 is arranged on the third side wall 103, and the fourth gasket 204 is arranged on the fourth side wall 104.

[0040] As a preferred embodiment, the shell 1 is also provided with an exhaust passage, which extends along the height direction of the shell 1, and the exhaust passage comprises at least one recess structure arranged in the accommodating cavity.

[0041] Specifically, the groove structure includes a first groove 31, a second groove 32, a third groove 33, and a fourth groove 34. The first groove 31 is formed in a circular arc shape at the joint of the first side wall 101 and the second side wall 102. The second groove 32 is formed in a circular arc shape at the joint of the second side wall 102 and the third side wall 103. The third groove 33 is formed in a circular arc shape at the joint of the third side wall 103 and the fourth side wall 104. The fourth groove 34 is formed in a circular arc shape at the joint of the fourth side wall 104 and the first side wall 101.

[0042] In order to facilitate assembly and ensure the stability of the gasket unit in the accommodating cavity, the housing 1 is provided with mounting holes 12, and the gasket 20 is provided with mounting protrusions 22 matched with the mounting holes 12. The mounting protrusions 22 are embedded in the mounting holes 12 and locked by fastening bolts to assemble the gasket 20 and the housing 1.

[0043] Further, in order to ensure installation stability, the number of mounting holes 12 is set to be multiple, and they are uniformly spaced on the housing 1. The number of mounting protrusions 22 is also set to be multiple, and they are matched with the positions of the mounting holes 12.

[0044] As a preferred embodiment, the thickness of the gasket 20 is 1.09-1.68 mm, and the error value is within the range of 0.05 mm up and down. According to actual needs, the thickness of the gasket can be adjusted to achieve different wear-resistant effects.

[0045] As a preferred embodiment, the housing 1 is also provided with a reinforcing rib structure. The reinforcing rib structure includes a plurality of reinforcing rib plates 13 spaced apart on the outer side of the housing 1. The reinforcing rib plates 13 extend along the horizontal direction to increase the overall structural strength of the pole piece magazine.

[0046] As a preferred embodiment, for the consideration of long-term use, since the high molecular material polytetrafluoroethylene (PTFE) has good wear resistance and chemical stability, it is suitable for various harsh environments. Therefore, in this embodiment, the material of the gasket 20 is polytetrafluoroethylene.

[0047] Of course, in other embodiments, the gasket 20 can also be made of other high molecular materials or metal materials.

[0048] As a preferred embodiment, the optimal design is determined by stress analysis and life prediction of the gasket 20 according to finite element analysis software. Specifically, the gasket is designed as a trapezoidal structure, and the upper width is 108.34±0.5mm; 78.34±0.5mm (the width of the tab side is reduced), the lower width is 108.34±0.5mm; 78.34±0.5mm (the width of the tab side is reduced), and the height is 389.4±0.5mm (the height of the on-site magazine).

[0049] The tab magazine of the present embodiment is installed on a tab production equipment for long-time running test to test the performance of the magazine. The test results show that the stability of the tab during handling and stacking is significantly improved, and the tab throwing problem is effectively solved.

[0050] The utility model discloses a gradient gasket is arranged on the inner wall of the magazine to reduce the inner diameter of the accommodating cavity in the magazine, thereby reducing the position change range of the tab in the magazine due to air blowing. The wear-resistant gradient gasket is made of high molecular material or metal material, and different wear-resistant effects can be achieved by adjusting the material and thickness of the gasket. The utility model can reduce the manufacturing cost and maintenance complexity, and improve the existing magazine. In the specific manufacturing process, low-cost materials can be used to reduce the manufacturing cost and reduce the maintenance complexity. The utility model can improve the stability of the tab during handling and stacking. Specifically, the tab magazine is transported by mechanical clamping or magnetic adsorption, so that the tab remains in a stable state during handling and stacking, and the probability of tab throwing is effectively reduced, thereby improving the production efficiency and product quality.

[0051] In addition, the tab magazine of the utility model is provided with an observation port, so that the tab throwing problem can be found and corrected in time by visual inspection or manual inspection.

[0052] In the description of the utility model, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0053] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect;Can be two element inside's intercommunication or two element's interaction relation. For ordinary skilled person in the art, the above-mentioned term can be understood according to the specific meaning in the utility model of concrete situation.

[0054] Obviously, the above embodiments are only examples for clearly illustrating, not limited to the embodiments. For ordinary skilled person in the art, on the basis of the above description, other different forms of changes or variations can be made. Here need not and also cannot be exhausted to all the embodiments. The obvious changes or variations derived from still in the protection scope of the utility model creation.

Claims

1. A pole piece cartridge for housing a pole piece, characterized by: Comprising, a shell having openings at both ends in the height direction, the interior of the shell having a receiving cavity, the pole piece being placed into the receiving cavity through one of the openings; a gasket unit comprising at least one gasket, the at least one gasket being detachably arranged on the inner wall of the shell, the projection shape of the gasket along its thickness direction being trapezoidal; when the pole piece is received in the receiving cavity, the pole piece is in contact with the at least one gasket, and the pole piece can be limited in the receiving cavity by the at least one gasket.

2. The pole piece cartridge of claim 1, wherein: Further comprising a bottom support plate connected to the other opening of the shell, the bottom support plate and the shell cooperating to form the receiving cavity.

3. The pole piece cartridge of claim 1, wherein: The shell is provided with a viewing port, the viewing port comprising at least one viewing hole arranged on the side wall of the shell, and a through hole is arranged on the gasket at a position opposite to the viewing hole, the projection area of the through hole in the horizontal direction being less than or equal to the projection area of the viewing hole in the horizontal direction.

4. The pole piece cartridge of claim 1, wherein: The shell is further provided with a tab receiving portion, the tab receiving portion being protrudingly arranged along one of the side walls of the shell away from the receiving cavity, and the tab of the pole piece can be received in the tab receiving portion.

5. The pole piece magazine according to any one of claims 1 to 4, characterized in that: The shell comprises a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the first side wall, the second side wall, the third side wall and the fourth side wall surrounding to form the receiving cavity, the projection of the receiving cavity in the height direction being rectangular; wherein the first side wall and the third side wall are oppositely arranged, and the second side wall and the fourth side wall are oppositely arranged.

6. The pole piece cartridge of claim 5, wherein: The gasket unit comprises a first gasket, a second gasket, a third gasket and a fourth gasket, the first gasket being arranged on the first side wall, the second gasket being arranged on the second side wall, the third gasket being arranged on the third side wall, and the fourth gasket being arranged on the fourth side wall.

7. The pole piece cartridge of claim 5, wherein: The shell is further provided with an exhaust passage, the exhaust passage being arranged in extension along the height direction of the shell, and the exhaust passage comprising at least one groove structure arranged in the receiving cavity.

8. The pole piece cartridge of claim 5, wherein: The shell is provided with a mounting hole, and the gasket is provided with a mounting protrusion matched with the mounting hole, the mounting protrusion being embedded in the mounting hole to assemble the gasket and the shell.

9. The pole piece cartridge of claim 5, wherein: The thickness of the gasket is 1.09-1.68 mm.

10. The pole piece cartridge of claim 5, wherein: The material of the gasket is polytetrafluoroethylene.

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