Battery casing device

Abstract

The utility model provides a device for putting a battery into a shell. The battery shell entering device comprises a dust collection pressing head and a dust collection pipe, the dust collection pressing head is provided with a first surface, the shape of the first surface is matched with the shape of a shell to be put into the shell, the first surface is provided with a plurality of first dust collection ports, and an air channel is formed in the dust collection pressing head and communicated with the first dust collection ports; the dust collection pipe is arranged on one side of the dust collection pressing head and communicates with the air channel. According to the invention, the dust collection pressure head matched with the shape of the shell to be loaded into the shell is arranged, the first surface of the dust collection pressure head is arranged close to the shell opening of the shell, and the first surface is provided with a plurality of first dust collection openings, so that when the battery cell to be loaded into the shell enters the shell, the first dust collection openings are formed in the first surface; the metal dust generated by the scratching of the battery cell and the shell opening of the shell can be sucked away by the first dust suction opening close to the shell opening, so that the technical problem that the metal dust generated when the battery cell enters the shell falls into the shell to cause bad battery products is solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery shell insertion device. Background Art

[0002] Batteries consist of cells and a casing. The process of assembling the cells into the casing is called shelling. To prevent dust from affecting battery performance, the casing is cleaned before and after shelling.

[0003] However, during the shell insertion process, the contact and friction between the battery cell and the shell, especially the surface of the shell entrance, is scratched, generating a small amount of metal dust, which has the risk of falling into the shell. After the battery is processed, the shell is injected with electrolyte, and the metal dust can flow with the electrolyte, causing internal short circuits in the battery cell and other product defects.

[0004] Therefore, there is an urgent need to solve the technical problem that metal dust generated during shell insertion falls into the shell and causes defective battery products. Utility Model Content

[0005] The embodiments of the present application provide a battery shell insertion device, which can improve the technical problem that metal dust generated during shell insertion falls into the shell and causes defective battery products.

[0006] An embodiment of the present application provides a battery shell insertion device, comprising:

[0007] A dust suction head having a first surface, the shape of the first surface matches the shape of the shell to be inserted into the shell, the first surface is provided with a plurality of first dust suction ports, and an air duct is provided inside the dust suction head, the air duct is connected to the first dust suction ports;

[0008] A dust suction pipe is arranged on one side of the dust suction pressure head and is communicated with the air duct.

[0009] In one embodiment, the dust suction head includes a first pressure head and a second pressure head arranged along a first direction and opposite to each other, the first surface of the first pressure head is a plane or a curved surface, and the first surface of the second pressure head is a plane or a curved surface.

[0010] In one embodiment, the battery shell insertion device includes a guide rail extending along the first direction, and at least one of the first pressing head and the second pressing head is slidably connected to the guide rail.

[0011] In one embodiment, the air duct includes a main trunk extending in one direction and branches extending in another direction, each of the branches is connected to one of the first suction ports, and both ends of the main trunk are connected to one of the suction pipes respectively.

[0012] In an embodiment, the main body is divided into two sections, and the two sections of the main body are not communicated with each other, and the two sections of the main body are communicated with the suction pipe through the openings near the edges of the suction head.

[0013] In an embodiment, the suction head comprises a third suction head and a fourth suction head arranged in a second direction opposite to each other, and the first surface of the first suction head, the first surface of the second suction head, the first surface of the third suction head and the first surface of the fourth suction head are all planes.

[0014] In an embodiment, the first suction head and the third suction head are connected, and the second suction head and the fourth suction head are connected.

[0015] In an embodiment, a plurality of grooves are arranged on the first surface of the suction head, and the depth of the grooves is less than the thickness of the suction head.

[0016] In an embodiment, the bottom surface of the grooves is provided with a plurality of second suction ports, and the air duct is communicated with the second suction ports and the suction pipe.

[0017] In an embodiment, the first suction ports are arranged on the edge area of the first surface, and the centers of the plurality of first suction ports are arranged in the same direction.

[0018] The beneficial effects of the embodiments of the present application are as follows:

[0019] In the embodiments of the present application, the suction head matched with the shape of the shell to be entered is arranged, the first surface of the suction head is arranged near the shell opening of the shell, and the first surface is provided with a plurality of first suction ports. When the battery cell to be entered into the shell enters the shell, the metal dust generated by the scraping of the battery cell and the shell opening can be sucked away by the first suction port near the shell opening, thereby improving the technical problem that the metal dust generated during the entering into the shell falls into the shell and causes the battery product to be bad. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a schematic diagram of a battery entering shell device provided by an embodiment of the present application in a battery entering shell process;

[0022] Figure 2 is a schematic diagram of another battery entering shell device provided by an embodiment of the present application in a battery entering shell process;

[0023] Figure 3 1 is a schematic diagram of a top view of the first pressure head provided in an embodiment of the present application;

[0024] Figure 4 yes Figure 3 A schematic diagram of the structure of an airway;

[0025] Figure 5 yes Figure 3 Schematic diagram of another airway structure.

[0026] Description of reference numerals:

[0027] Dust suction head 10, first pressure head 11, second pressure head 12, third pressure head 13, fourth pressure head 14, first surface 10a, groove 10b, first dust suction port 15, air duct 16, main trunk 161, branch trunk 162, second dust suction port 17, guide rail 40, dust suction pipe 50, first direction D1, second direction D2, third direction D3, depth h1 of groove 10b, width w1 of groove 10b, thickness d1 of dust suction head 10, width w2 of dust suction head 10, shell 20, battery cell 30. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0029] The embodiment of the present application provides a battery shell device, such as Figures 1 to 5 As shown, the battery shell insertion device includes a dust suction head 10 and a dust suction pipe 50. The dust suction head 10 has a first surface 10a. The shape of the first surface 10a matches the shape of the shell 20 to be inserted into the shell. The first surface 10a is provided with multiple first dust suction ports 15. An air duct 16 is provided inside the dust suction head 10, and the air duct 16 is connected to the first dust suction port 15; the dust suction pipe 50 is provided on one side of the dust suction head 10 and is connected to the air duct 16.

[0030] The dust suction head 10 can be made of metal, plastic or other materials, but is not limited thereto.

[0031] like Figure 1 and Figure 2 As shown, the shape of the first surface 10a of the vacuum head 10 matches the shape of the shell 20 to be inserted into the shell. When the battery is a square battery, the cross-sectional shape of the shell opening of the shell 20 is rectangular, and the first surface 10a of the vacuum head 10 can be a plane or a combination of multiple planes. When the battery is a cylindrical battery, the cross-sectional shape of the shell opening of the shell 20 is circular, and the first surface 10a of the vacuum head 10 can be an arc surface. The first surface 10a can be arranged close to the outer surface of the shell 20, and the first surface 10a exceeds the shell 20 and extends in the direction away from the shell opening. In other words, the vacuum head 10 can be sleeved on the outer periphery of the shell opening.

[0032] When the shape of the shell opening of the housing 20 is other shapes, the first surface 10a can adaptively match the shape of the shell opening, so that the dust suction head 10 can be sleeved on the outer periphery of the shell opening.

[0033] It should be noted that the cross-sectional shape of the vacuum head 10 corresponding to the square battery can be a closed figure or a non-closed figure. That is to say, the vacuum head 10 can be set as a whole to form a closed rectangle; or it can be set as four sections to form a rectangle, with each section corresponding to a side of the rectangle. Figure 2 As shown, when the cross-sectional shape of the dust suction head 10 is a closed figure, one dust suction head 10 corresponds to a housing 20 of one size; Figure 1 As shown, when the cross-sectional shape of the vacuum head 10 is a non-closed figure, one vacuum head 10 can correspond to square shells 20 of various sizes, thereby being compatible with the shell insertion process of square batteries of different sizes and increasing the application scenarios of the vacuum head 10.

[0034] like Figure 1 As shown, since the shape of the first surface 10a matches the shape of the shell 20, the vacuum head 10 can position and guide the shell 20 and the battery cell 30, reduce the deviation of the battery cell 30 entering the shell, reduce the risk of scratching between the battery cell 30 and the shell 20, and reduce metal dust.

[0035] For ease of description, a first direction D1, a second direction D2, and a third direction D3 are defined, wherein the direction in which the battery cell 30 is inserted into the housing is referred to as the third direction D3, which is perpendicular to the first direction D1 and the second direction D2.

[0036] Specifically, Figure 1The battery cell 30 is shown before it is inserted into the housing. The suction head 10 is positioned near the opening of the housing 20, contacting the outer surface of the housing 20. This ensures that the spacing between the suction head 10 and the inner cavity of the housing 20 in the first direction D1 is close to that in the first direction D1. When the battery cell 30 approaches the housing 20 along the third direction D3, it enters between the suction heads 10 and is guided by them, minimizing the misalignment between the battery cell 30 and the housing 20.

[0037] The first surface 10a is provided with a plurality of first dust suction ports 15. When the battery cell 30 is inserted into the housing, it passes through the dust suction head 10 and then enters the housing port. The housing 20 is typically made of a metal such as aluminum. Because the housing port is a metal cross-section, it may contain machining burrs. When the battery cell 30 contacts the housing port, these burrs easily fall off, forming metal dust. This metal dust can easily enter the interior of the housing 20 during the insertion process. In subsequent processes, when electrolyte is injected into the housing 20, the metal dust flows with the electrolyte, which can easily cause short circuits within the battery cell 30.

[0038] To address this, the present invention provides a plurality of first dust suction ports 15 on the first surface 10a, and the first dust suction ports 15 are provided close to the shell opening. When metal dust is generated, it will be sucked away by the first dust suction ports 15, reducing the risk of metal dust entering the interior of the shell 20.

[0039] In some embodiments, the dust suction head 10 may be a metal block or a plastic block.

[0040] like Figure 3 As shown, the air duct 16 can be formed within the suction head 10, thereby simplifying the arrangement of the air duct 16. The air duct 16 communicates with the first suction port 15 and the suction pipe 50. The air duct 16 can be a plurality of through holes machined into the suction head 10. By arranging the air duct 16 within the suction head 10, the space occupied by the air duct 16 can be reduced, while simplifying the structure of the air duct 16.

[0041] The dust suction pipe 50 is used to extract the gas in the air passage 16, and the metal dust is sucked away by the dust suction pipe 50 through the air passage 16. The dust suction pipe 50 can be a plastic pipe, but is not limited thereto.

[0042] In one embodiment, if Figure 1 and Figure 2As shown, the vacuum head 10 includes a first head 11 and a second head 12 arranged and opposite to each other along a first direction D1. Opposite means that the first surface 10a of the first head 11 and the first surface 10a of the second head 12 are close to each other, and the center line of the first head 11 and the second head 12 extends approximately along the first direction D1. During the shell insertion process, the first surface 10a of the first head 11 is set close to the shell 20, and the first surface 10a of the second head 12 is set close to the shell 20. When the shell 20 to be inserted is the shell 20 of a square battery, the first surface 10a of the first head 11 and the first surface 10a of the second head 12 are both flat.

[0043] When the shell 20 to be inserted is the shell 20 of a cylindrical battery, the first surface 10a of the first pressure head 11 and the first surface 10a of the second pressure head 12 are both arc surfaces. The arc surface can be a semicircular arc or a small semicircular arc. A semicircular arc means that the angle of the central angle of the arc surface is 180 degrees, and a small semicircular arc means that the angle of the central angle of the arc surface is less than 180 degrees. When the arc surface is a semicircular arc, when the first pressure head 11 and the second pressure head 12 are arranged on the periphery of the shell opening, the cross-sectional shape of the first surface 10a can be a closed figure, so that the first suction port 15 can be arranged around the shell opening, so as to be able to suck away metal dust in a larger range.

[0044] In one embodiment, if Figure 1 and Figure 2 As shown, the battery shell insertion device includes a guide rail 40 extending along a first direction D1, and at least one of the first pressing head 11 and the second pressing head 12 is slidably connected to the guide rail 40. The first pressing head 11 and / or the second pressing head 12 can slide along the guide rail 40 in the first direction D1, thereby adjusting the distance between the first pressing head 11 and the second pressing head 12 to facilitate the placement or removal of the shell 20.

[0045] Specifically, during the shell insertion process, the first pressing head 11 is driven to slide along the guide rail 40, increasing the distance between the first pressing head 11 and the second pressing head 12, and the shell 20 is placed. The first pressing head 11 is then driven to slide along the guide rail 40 toward the second pressing head 12 until the second pressing head 12 contacts the outer surface of the shell 20. The battery cell 30 is pushed into the shell 20. During the shell insertion process, the dust suction pipe 50 is in operation to absorb the metal dust generated during the shell insertion process.

[0046] The power for driving the first pressing head 11 and / or the second pressing head 12 to move along the guide rail 40 may be hydraulic drive or motor drive, which is not limited in the present application.

[0047] It should be noted that the mechanism for placing the shell 20 and pushing the battery cell 30 into the shell can be a conventional structure, such as a robot, etc., and this application does not impose any restrictions on this.

[0048] In one embodiment, if Figure 2 As shown, the shell 20 to be inserted into the shell is a shell 20 of a square electrode, and the dust suction head 10 includes a third pressure head 13 and a fourth pressure head 14 arranged and opposite to each other along the second direction D2, the second direction D2 is perpendicular to the first direction D1, and the first surface 10a of the first pressure head 11, the first surface 10a of the second pressure head 12, the first surface 10a of the third pressure head 13 and the first surface 10a of the fourth pressure head 14 are all planes. The first surface 10a of the first pressure head 11 and the first surface 10a of the second pressure head 12 can correspond to the two opposite outer surfaces of the shell 20. The first surface 10a of the third pressure head 13 and the first surface 10a of the fourth pressure head 14 can correspond to the other two opposite outer surfaces of the shell 20. By setting the four pressure heads to be detachable, the four pressure heads can be made compatible with the shells 20 of square batteries of various sizes, thereby increasing the application scenarios of the dust suction head 10.

[0049] In one embodiment, the first and third pressure heads 11 and 13 are connected, while the second and fourth pressure heads 12 and 14 are connected. This means that the first surfaces 10a of the first and third pressure heads 11 and 13 have an L-shaped cross-section, while the first surfaces 10a of the second and fourth pressure heads 12 and 14 have an L-shaped cross-section. These cross-sections are planes perpendicular to the third direction D3. This arrangement reduces the number of pressure heads, making the vacuum head 10 compact and easy to install.

[0050] In one embodiment, if Figure 2 As shown, a plurality of grooves 10b are provided on the first surface 10a of the dust suction head 10, and the depth h1 of the grooves 10b is less than the thickness d1 of the dust suction head 10. The thickness d1 of the dust suction head 10 refers to the dimension of the dust suction head 10 in a direction perpendicular to the first surface 10a. The depth h1 of the grooves 10b refers to the dimension of the grooves 10b in the same direction as the thickness d1 of the dust suction head 10. By providing a plurality of grooves 10b on the first surface 10a, the contact area between the first surface 10a and the battery cell 30 to be inserted into the shell can be reduced, thereby reducing the frictional resistance of the first surface 10a to the battery cell 30, making it easier for the battery cell 30 to be inserted into the shell.

[0051] In one embodiment, if Figure 2 and Figure 3 As shown, the width w1 of the groove 10b is the same as the width w2 of the dust suction head 10. The width w1 of the groove 10b refers to the dimension of the groove 10b in the direction in which the battery cell 30 is inserted into the housing. In the third direction D3, the width w1 of the groove 10b is the same as the width w2 of the dust suction head 10, that is, the groove 10b extends through the dust suction head 10 in the third direction D3.

[0052] In one embodiment, if Figures 1 to 3As shown, the bottom surface of the groove 10b is provided with a plurality of second dust suction ports 17, and the air duct 16 connects the second dust suction ports 17 and the dust suction pipe 50. The setting of the second dust suction port 17 is similar to that of the first dust suction port 15, the difference being the position of the second dust suction port 17. The first dust suction port 15 is provided on the first surface 10a, while the second dust suction port 17 is provided on the bottom surface of the groove 10b and / or the side surface of the groove 10b. By providing the second dust suction port 17 on the bottom surface and / or the side surface of the groove 10b, the dust suction area can be increased, which can not only suck away the metal dust generated during the shell entry process, but also suck away the dust on the surface of the battery cell 30, further reducing the risk of metal dust falling into the shell 20.

[0053] In one embodiment, if Figures 1 to 3 As shown, the first suction port 15 is provided in the edge region of the first surface 10a. The edge region is relative to the middle region of the first surface 10a. The edge region and the middle region are arranged along the third direction D3. In the third direction D3, the edge region is located on the side of the middle region close to the housing 20.

[0054] like Figure 3 As shown, the centers of the multiple first suction ports 15 are arranged in the same direction. This means that when the housing 20 is a rectangular battery housing 20, the first suction ports 15 can be arranged along a straight line, corresponding to a side of the housing opening. This arrangement allows the multiple first suction ports 15 to be positioned close to the housing opening, increasing the probability that the first suction ports 15 will absorb metal dust.

[0055] like Figure 4 and Figure 5 As shown, the air channel 16 may include a main trunk 161 extending in one direction and a branch trunk 162 extending in another direction, and each branch trunk 162 may be connected to a first dust suction port 15. Through the above arrangement, the airflow in multiple first dust suction ports 15 can be converged to the main trunk 161, so that only the main trunk 161 can be connected to the dust suction pipe 50 to achieve dust collection of multiple first dust suction ports 15. In turn, the number of dust suction pipes 50 connected to the dust suction pressure head 10 can be reduced, simplifying the structure of the battery shell insertion device.

[0056] For example, Figure 4 As shown, taking the first pressure head 11 as an example, the main trunk 161 can extend along the second direction D2, and the branch trunk 162 can extend along the first direction D1, with the main trunk 161 and the branch trunk 162 communicating with each other. The dust suction pipe 50 is connected to both ends of the main trunk 161. With this arrangement, only two dust suction pipes 50 are required for multiple first dust suction ports 15.

[0057] In some embodiments, as Figure 5As shown, the trunk 161 can be arranged in sections, with two sections of the trunk 161 spaced apart and not connected to each other. Specifically, multiple first suction ports 15 can be connected to one section of the trunk 161, and another multiple first suction ports 15 can be connected to another section of the trunk 161. This arrangement can increase the suction force of each first suction port 15, further reducing the risk of metal dust falling into the housing 20.

[0058] It should be noted that the shape of the airway 16 can also be set as needed, and this application does not impose any restrictions on this.

[0059] It should be understood that when the shell 20 is the shell 20 of a cylindrical battery, multiple first dust suction ports 15 can be arranged along the circumference of the same circle, so that multiple first dust suction ports 15 are all set close to the shell opening, thereby increasing the probability of the first dust suction ports 15 sucking away metal dust.

[0060] When the housing 20 is a cylindrical battery housing 20 , the arrangement of the air channel 16 is similar to that when the housing 20 is a square battery housing 20 , and the only difference is the shape of the air channel 16 .

[0061] In some embodiments, the second suction ports 17 may also be dispersedly disposed on the bottom surface of the groove 10b and / or the side surfaces of the groove 10b. The second suction ports 17 may be located in the middle area or edge area of ​​the suction head 10, which is not limited in this application.

[0062] In some embodiments, as Figure 3 As shown, the second dust suction ports 17 can also be arranged in the same direction. Similarly, multiple second dust suction ports 17 can also be connected to the dust suction pipes 50 at both ends of the trunk 161 through the trunk 161. By arranging multiple second dust suction ports 17 in the same direction, the structure of the air duct 16 can be simplified and the processing difficulty can be reduced.

[0063] In one embodiment, the battery insertion device includes a dust collection assembly connected to a dust collection tube 50 and configured to extract air from the dust collection tube 50. The dust collection assembly may be a fan, etc. The dust collection assembly extracts air from the dust collection tube 50, and the air flows along the first dust collection port 15 and the second dust collection port 17 into the air passage 16, and then flows into the dust collection assembly along the air passage 16.

[0064] It should be understood that the dust suction pipe 50 in the figure only shows a section connected to the dust suction pressure head 10, and does not show the part of the dust suction pipe 50 connected to the dust suction assembly.

[0065] The dust collection assembly may further include a dust filter, which may filter and collect metal dust, etc., to facilitate subsequent processing of the metal dust.

[0066] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery shell device, characterized in that: include: A dust suction head (10) has a first surface (10a), the shape of the first surface (10a) matches the shape of a shell (20) to be inserted into the shell, the first surface (10a) is provided with a plurality of first dust suction ports (15), an air duct (16) is provided inside the dust suction head (10), and the air duct (16) is communicated with the first dust suction ports (15); A dust suction pipe (50) is provided on one side of the dust suction pressure head (10) and is in communication with the air passage (16).

2. The battery shell insertion device according to claim 1, characterized in that: The dust suction head (10) comprises a first pressure head (11) and a second pressure head (12) arranged along a first direction (D1) and opposite to each other, wherein the first surface (10a) of the first pressure head (11) is a plane or an arc surface, and the first surface (10a) of the second pressure head (12) is a plane or an arc surface.

3. The battery shell insertion device according to claim 2, characterized in that: The battery shell insertion device comprises a guide rail (40) extending along the first direction (D1), and at least one of the first pressing head (11) and the second pressing head (12) is slidably connected to the guide rail (40).

4. The battery shell insertion device according to claim 1, characterized in that: The first dust suction ports (15) are arranged in an edge area of ​​the first surface (10a), and the centers of the plurality of first dust suction ports (15) are arranged in the same direction.

5. The battery shell insertion device according to claim 4, characterized in that: The air duct (16) comprises a main trunk (161) extending in one direction and branches (162) extending in another direction, each of the branches (162) being connected to one of the first suction ports (15), and both ends of the main trunk (161) being connected to one of the suction pipes (50).

6. The battery shell insertion device according to claim 5, characterized in that: The main trunk (161) is divided into two sections and the two sections of the main trunk (161) are not connected to each other. The openings of the two sections of the main trunk (161) close to the edges of the dust suction pressure head (10) are connected to the dust suction pipe (50).

7. The battery shell insertion device according to any one of claims 1 to 6, characterized in that: A plurality of grooves (10b) are provided on the first surface (10a) of the dust suction head (10), and the depth (h1) of the grooves (10b) is smaller than the thickness (d1) of the dust suction head (10).

8. The battery shell insertion device according to claim 7, characterized in that: The bottom surface of the groove (10b) is provided with a plurality of second dust suction ports (17), and the air passage (16) is connected between the second dust suction ports (17) and the dust suction pipe (50).

9. The battery shell insertion device according to claim 2, characterized in that: The dust collecting head (10) comprises a third head (13) and a fourth head (14) arranged and opposite to each other along a second direction (D2), the second direction (D2) being perpendicular to the first direction (D1), and the first surface (10a) of the first head (11), the first surface (10a) of the second head (12), the first surface (10a) of the third head (13), and the first surface (10a) of the fourth head (14) being planes.

10. The battery shell insertion device according to claim 9, characterized in that: The first pressure head (11) and the third pressure head (13) are connected, and the second pressure head (12) and the fourth pressure head (14) are connected.

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