Battery cell extrusion device

Abstract

The utility model provides a battery core extrusion device which comprises an extrusion base, a lifting plate, a back plate, a plurality of telescopic rods and a bottom plate, the extrusion base is provided with a first surface and a second surface, the first surface is parallel to the second surface, the first surface is attached to the back plate, the extrusion base is arranged on the lifting plate, the lifting plate and the bottom plate are perpendicularly arranged on the back plate, the first end of the telescopic rod is arranged on the side, away from the extrusion base, of the lifting plate, and the second end of the telescopic rod is arranged on the bottom plate. The bottom plate is parallel to the lifting plate. According to the battery cell extruding device provided by the utility model, the battery cell testing efficiency can be effectively improved, and the material cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery detection, in particular to a battery core extrusion device. Background Art

[0002] Lithium-ion batteries need to pass extrusion tests before and after the design and production process. Generally speaking, when the battery cell is undergoing an extrusion test, the extrusion head will squeeze the center of the large surface of the battery cell. Since the height of the extrusion head is usually fixed, when performing extrusion tests on batteries of different sizes, it is usually necessary to replace the bearing bases of different sizes to adapt to batteries of different sizes. Replacing the bearing base is time-consuming and labor-intensive, which will reduce the test efficiency. At the same time, preparing bearing bases of different sizes will also increase material costs. Utility Model Content

[0003] The utility model aims to provide a battery cell extrusion device to solve the technical problems of low efficiency and high cost in the prior art when performing extrusion tests on battery cells of different sizes.

[0004] The technical solution of the utility model is as follows, providing a battery cell extrusion device, including an extrusion base, a lifting plate, a back plate, a plurality of telescopic rods and a bottom plate;

[0005] The extrusion base has a first surface and a second surface, the first surface and the second surface are parallel, the first surface is in contact with the back plate, the extrusion base is arranged on the lifting plate, the lifting plate and the bottom plate are respectively arranged vertically on the back plate, the first end of the telescopic rod is arranged on a side of the lifting plate away from the extrusion base, the second end of the telescopic rod is arranged on the bottom plate, and the bottom plate is parallel to the lifting plate.

[0006] Preferably, it further comprises a plurality of first support columns, wherein the first support columns are arranged on a side of the bottom plate away from the lifting plate.

[0007] Preferably, it further comprises a lifting device, which is arranged on a side of the bottom plate away from the lifting plate; an opening is arranged on the bottom plate; and the lifting device is connected to one of the plurality of telescopic rods through the opening.

[0008] Preferably, the telescopic rods include five, and the lifting device is connected to one of the five telescopic rods.

[0009] Preferably, a positioning groove is provided at the center of the second surface of the extrusion base.

[0010] Preferably, the extrusion base includes a first force-bearing plate and a second force-bearing plate, the first surface is located on the first force-bearing plate, and the second surface is located on the second force-bearing plate.

[0011] Preferably, the extrusion base further includes a second support column, a first end of the second support column is connected to the first force-bearing plate; a second end of the second support column is connected to the second force-bearing plate; and the second support column is perpendicular to both the first force-bearing plate and the second force-bearing plate.

[0012] Preferably, a projection of the first load-bearing plate along the direction of the second support column is located within a projection of the back plate along the direction of the second support column.

[0013] Preferably, a projection of the extrusion base along the direction of the telescopic rod is located within a projection of the lifting plate along the direction of the telescopic rod.

[0014] Preferably, the back plate and the bottom plate are integrally formed.

[0015] The beneficial effect of the utility model is that when the cells to be tested of different sizes are placed on the lifting plate, the height of the lifting plate can be adjusted by controlling the telescopic rod to extend and retract, thereby adjusting the height of the cells to be tested to reach the optimal squeezing position, effectively improving the efficiency of the cell test. Cells of different sizes can be tested by adjusting the height of the lifting plate, without configuring bearing bases of different sizes, thus saving material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first structural schematic diagram of the extrusion device for automatically adjusting the height of the battery cell of the utility model;

[0017] Figure 2 This is a second structural schematic diagram of the extrusion device for automatically adjusting the height of the battery cell of the utility model.

[0018] Figure numerals: 10 - extrusion base; 11 - first force-bearing plate; 12 - second force-bearing plate; 13 - second support column; 121 - second surface; 1211 - positioning groove; 20 - lifting plate; 30 - back plate; 40 - telescopic rod; 50 - bottom plate; 60 - lifting device; 70 - first support column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Figure 1 1 is a schematic diagram of the first structure of the extrusion device for automatically adjusting the height of the battery cell according to an embodiment of the utility model. It should be noted that if there is substantially the same result, the utility model is not based on Figure 1 The structure shown is limited. Figure 1 As shown, the battery cell extrusion device includes an extrusion base 10, a lifting plate 20, a back plate 30, a telescopic rod 40 and a bottom plate 50;

[0022] The extrusion base 10 has a first surface and a second surface 121, the first surface and the second surface 121 are parallel, the first surface is in contact with the back plate 30, the extrusion base 10 is arranged on the lifting plate 20, the lifting plate 20 and the bottom plate 50 are respectively vertically arranged on the back plate 30, the first end of the telescopic rod 40 is arranged on a side of the lifting plate 20 away from the extrusion base 10, the second end of the telescopic rod 40 is arranged on the bottom plate 50, and the bottom plate 50 is parallel to the lifting plate 20.

[0023] In the embodiment of the utility model, the extrusion device that automatically adjusts the height of the battery cell places the battery cell to be tested on the lifting plate 20 and closely contacts the second surface 121 of the extrusion base 10 when performing an extrusion test, ensuring that no displacement occurs during the extrusion test; the telescopic rod 40 is adjusted to extend and retract and drive the lifting plate 20 to lift and lower, so that the battery cell to be tested on the lifting plate 20 is at an optimal extrusion height; when testing battery cells to be tested of different sizes, it is only necessary to place the battery cells to be tested of different sizes on the lifting plate 20 and closely contact the second surface 121 of the extrusion base 10, and then adjust the degree of extension of the telescopic rod 40 to drive the height of the lifting plate 20 so that the battery cells to be tested of different sizes on the lifting plate 20 are at an optimal extrusion height.

[0024] The extrusion device for automatically adjusting the height of the battery cell provided by the utility model can adjust the height of the lifting plate 20 by controlling the telescopic rod 40 to extend and retract when the battery cells to be tested of different sizes are placed on the lifting plate 20, thereby adjusting the height of the battery cell to be tested to reach the optimal extrusion position, thereby effectively improving the efficiency of the battery cell test. By adjusting the height of the lifting plate 20, battery cells of different sizes can be tested, and there is no need to configure bearing bases of different sizes, thus saving material costs.

[0025] In some embodiments, a second structural schematic diagram of the extrusion device for automatically adjusting the height of the battery cell according to an embodiment of the utility model is as follows: Figure 2 As shown, the extrusion device for automatically adjusting the height of the battery cell provided by the utility model further includes a plurality of first support columns 70 , and the first support columns 70 are arranged on a side of the bottom plate 50 away from the lifting plate 20 .

[0026] In an embodiment of the utility model, multiple first support columns 70 can be used to support the base plate 50 to improve the structural strength, and can also increase the upper limit of the height adjustment of the lifting plate 20. According to actual needs, multiple first support columns 70 can enhance the adaptability of the extrusion device for automatically adjusting the height of the battery cell in the embodiment of the utility model.

[0027] In some embodiments, Figure 2 As shown, the extrusion device for automatically adjusting the height of the battery cell provided by the utility model also includes a lifting device 60, which is arranged on a side of the bottom plate 50 away from the lifting plate 20; an opening is provided on the bottom plate 50; the lifting device 60 is connected to one of the multiple telescopic rods 40 through the opening.

[0028] In the embodiment of the utility model, the lifting device 60 is connected to one of the multiple telescopic rods 40 through the opening on the base plate 50, and the extension and retraction of one telescopic rod 40 is controlled by the lifting device, thereby driving the lifting plate 20 to be lifted and lowered; optionally, the lifting device 60 can be a lifting cylinder.

[0029] In some embodiments, Figure 2 As shown, in the extrusion device for automatically adjusting the height of the battery cell provided by the utility model, the telescopic rods 40 include five, and the lifting device 60 is connected to one of the five telescopic rods 40 .

[0030] In the embodiment of the utility model, five telescopic rods 40 are included, and the first end of each telescopic rod 40 is arranged on the side of the lifting plate 20 away from the extrusion base 10, and the second end of each telescopic rod 40 is arranged on the bottom plate 50. It only needs to control one of the telescopic rods 40 to be extended or retracted through the power output end of the lifting device 60, so as to drive the other telescopic rods 40 to be extended or retracted, thereby completing the telescopic adjustment of the telescopic rods 40.

[0031] In some embodiments, Figure 1 As shown, a positioning groove 1211 is provided at the center of the second surface 121 of the extrusion base 10 .

[0032] In the embodiment of the utility model, the center of the positioning groove 1211 is the center of the second surface 121 of the extrusion base 10. Aligning the battery cell to be tested with the center of the positioning groove 1211 can ensure that the battery cell to be tested is aligned with the center of the second surface 121 of the extrusion base 10, ensuring that the battery cell to be tested is evenly stressed and will not be displaced during the extrusion test.

[0033] In some embodiments, Figure 1 As shown, the extrusion base 10 includes a first force-bearing plate 11 and a second force-bearing plate 12 , the first surface is located on the first force-bearing plate 11 , and the second surface 121 is located on the second force-bearing plate 12 .

[0034] In the embodiment of the utility model, the first force-bearing plate 11 is relatively parallel to the second force-bearing plate 12, the side of the first force-bearing plate 11 that is close to the back plate 30 is the first surface, and the side of the second force-bearing plate 12 that is provided with a positioning groove 1211 is the second surface 121; it should be noted that since the first surface is close to the back plate 30, it is not clearly shown in the figure.

[0035] In some embodiments, Figure 1 As shown, the extrusion base 10 also includes a second support column 13, the first end of the second support column 13 is connected to the first force-bearing plate 11; the second end of the second support column 13 is connected to the second force-bearing plate 12; the second support column 13 is perpendicular to both the first force-bearing plate 11 and the second force-bearing plate 12.

[0036] In the embodiment of the utility model, the second support column 13 is perpendicular to the first load-bearing plate 11 and the second load-bearing plate 12, so that the structure of the extrusion base 10 is in a relatively stable state. In different embodiments, the number of the second support columns 13 can be configured according to different requirements for the overall structural strength.

[0037] In some embodiments, Figure 1 As shown, the projection of the first load-bearing plate 11 along the direction of the second support column 13 is located within the projection of the back plate 30 along the direction of the second support column 13 .

[0038] In an embodiment of the utility model, the projection of the first force-bearing plate 11 along the direction of the second support column 13 is located within the projection of the back plate 30 along the direction of the second support column 13, which can ensure the force-bearing area of ​​the back plate 30 during the extrusion test and improve the overall structural stability of the extrusion device for automatically adjusting the height of the battery cell provided by the utility model.

[0039] In some embodiments, Figure 1 As shown, the projection of the extrusion base 10 along the direction of the telescopic rod 40 is located within the projection of the lifting plate 20 along the direction of the telescopic rod 40 .

[0040] In the embodiment of the utility model, the projection of the extrusion base 10 along the direction of the telescopic rod 40 is located within the projection of the lifting plate 20 along the direction of the telescopic rod 40, which can ensure that the extrusion base 10 is completely located on the lifting plate 20, thereby improving the overall structural stability of the extrusion device for automatically adjusting the height of the battery cell provided by the utility model.

[0041] In some embodiments, the back plate 30 and the bottom plate 50 are integrally formed.

[0042] In the embodiment of the utility model, the back plate 30 and the bottom plate 50 are integrally formed, which can improve the overall structural strength of the back plate 30 and the bottom plate 50, and improve the overall structural strength of the extrusion device for automatically adjusting the height of the battery cell provided by the utility model.

[0043] In a specific embodiment, the extrusion device for automatically adjusting the height of the battery cell provided by the utility model can also be connected to an external control system, which is used to accurately calculate the optimal test heights of battery cells to be tested of different sizes, and then control the power device to adjust the extension degree of the telescopic plate so that the height of the lifting plate 20 is at the optimal test height of the battery cell to be tested. While further improving the efficiency of the battery cell test, it can also improve the accuracy of adjusting the battery cell height.

[0044] The extrusion device for automatically adjusting the height of the battery cell provided by the utility model can adjust the height of the lifting plate 20 by controlling the telescopic rod 40 to extend and retract when the battery cells to be tested of different sizes are placed on the lifting plate 20, thereby adjusting the height of the battery cell to be tested to reach the optimal extrusion position, thereby effectively improving the efficiency of the battery cell test. By adjusting the height of the lifting plate 20, battery cells of different sizes can be tested, and there is no need to configure bearing bases of different sizes, thus saving material costs.

[0045] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. A battery cell extrusion device, characterized in that: It includes an extruded base, a lifting plate, a back plate, a plurality of telescopic rods and a bottom plate; The extrusion base has a first surface and a second surface, the first surface and the second surface are parallel, the first surface is in contact with the back plate, the extrusion base is arranged on the lifting plate, the lifting plate and the bottom plate are respectively arranged vertically on the back plate, the first end of the telescopic rod is arranged on a side of the lifting plate away from the extrusion base, the second end of the telescopic rod is arranged on the bottom plate, and the bottom plate is parallel to the lifting plate.

2. The battery cell extrusion device according to claim 1, characterized in that: It also includes a plurality of first support columns, which are arranged on a side of the bottom plate away from the lifting plate.

3. The battery cell extrusion device according to claim 1, characterized in that: It also includes a lifting device, which is arranged on a side of the bottom plate away from the lifting plate; an opening is arranged on the bottom plate; and the lifting device is connected to one of the multiple telescopic rods through the opening.

4. The battery cell extrusion device according to claim 3, characterized in that: The telescopic rods include five, and the lifting device is connected to one of the five telescopic rods.

5. The battery cell extrusion device according to claim 1, characterized in that: A positioning groove is provided at the center of the second surface of the extrusion base.

6. The battery cell extrusion device according to claim 1, characterized in that: The extrusion base includes a first force-bearing plate and a second force-bearing plate, the first surface is located on the first force-bearing plate, and the second surface is located on the second force-bearing plate.

7. The battery cell extrusion device according to claim 6, characterized in that: The extrusion base also includes a second support column, a first end of the second support column is connected to the first force-bearing plate; a second end of the second support column is connected to the second force-bearing plate; and the second support column is perpendicular to both the first force-bearing plate and the second force-bearing plate.

8. The battery cell extrusion device according to claim 7, characterized in that: The projection of the first load-bearing plate along the direction of the second support column is located within the projection of the back plate along the direction of the second support column.

9. The battery cell extrusion device according to claim 1, characterized in that: The projection of the extrusion base along the direction of the telescopic rod is located within the projection of the lifting plate along the direction of the telescopic rod.

10. The battery cell extrusion device according to claim 1, characterized in that: The back plate and the bottom plate are integrally formed.

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