Cover plate structure and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a cover plate structure and a battery, the cover plate structure comprises a cover plate body, a pole, a hanging ring, a fixing piece and a riveting pressing ring, the pole is fixedly arranged on the cover plate body; the hanging ring sleeves the pole and is arranged at one end of the pole; the fixing piece is connected with the pole and the hanging ring and is used for limiting the relative position of the pole and the hanging ring; and the riveting pressing ring is riveted with the cover plate body, is connected with the hanging ring and is used for limiting the relative position of the hanging ring and the cover plate body. Thus, the pole and the hanging ring can be stably connected through the fixing piece, the cover plate body and the hanging ring can be stably connected through the riveting pressing ring, then stable connection of the cover plate and the pole is achieved, the situation that welding defects are generated when the hanging ring is directly welded to the cover plate body and the yield of the cover plate structure is affected is avoided, and the quality of a battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a cover plate structure and a battery. Background Art

[0002] A battery is a device that converts chemical energy into electrical energy and is widely used in modern society.

[0003] The battery includes a shell, a cover and a battery cell. The cover is fixedly connected to the shell to form a closed internal environment. The battery cell is arranged inside the shell and is electrically connected to the external circuit through the poles arranged on the cover.

[0004] During the assembly of the pole, a hanging ring is fixedly connected to the end of the pole facing the battery cell. The hanging ring is fixedly connected to the cover plate by welding, which can limit the position of the pole on the cover plate. However, the laser welding process has a low yield rate, high production cost, and is prone to welding defects such as welding leakage and uneven welding, resulting in a poor connection between the hanging ring and the cover plate, thereby reducing the connection stability between the pole and the cover plate, reducing the cover plate yield, and affecting the production quality of the battery. Utility Model Content

[0005] The purpose of the utility model is to provide a cover plate structure and a battery, so as to solve the problems of poor connection stability between the pole and the cover plate and low cover plate yield.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, a cover plate structure includes: a cover plate body and a pole, wherein the pole is fixedly arranged on the cover plate body; a hanging ring, which is sleeved on the pole and provided at one end of the pole; a fixing member, which is connected to both the pole and the hanging ring and is used to limit the relative position of the pole and the hanging ring; and a riveted pressure ring, which is riveted to the cover plate body and connected to the hanging ring and is used to limit the relative position of the hanging ring and the cover plate body.

[0008] Preferably, the pole and the hanging ring are respectively arranged on both sides of the fixing member, and a side of the hanging ring facing away from the cover body abuts against a side of the riveted pressure ring facing the cover body.

[0009] Preferably, the projection of the riveted pressure ring in the thickness direction of the cover plate body and the projection of the hanging ring in the thickness direction of the cover plate body at least partially overlap.

[0010] Preferably, the riveted pressure ring includes a plurality of riveted parts, which are spaced apart along the circumference of the center of the riveted pressure ring and are all riveted to the cover plate body.

[0011] Preferably, the riveted portion is a bendable riveting claw, and the cover body is provided with a riveting groove at a position corresponding to the riveting claw.

[0012] Preferably, the riveted pressure ring includes a rotation-stopping portion, and the hanging ring is provided with a rotation-stopping groove at a position corresponding to the rotation-stopping portion.

[0013] Preferably, a plurality of the anti-rotation parts are provided, and the plurality of the anti-rotation parts are arranged at intervals along the circumferential direction of the center of the riveted pressure ring.

[0014] Preferably, the anti-rotation portion and the riveted portion are arranged alternately, and the anti-rotation portion and the riveted portion are respectively arranged on both sides of the riveted pressure ring.

[0015] Preferably, the length of the anti-rotation portion is smaller than the length of the riveted portion.

[0016] In a second aspect, a battery comprises a shell, a battery cell and the cover structure as described above, wherein the shell is fixedly connected to the cover structure, and the battery cell is arranged inside the shell and connected to the pole.

[0017] Beneficial effects of the utility model:

[0018] A cover plate structure includes a cover plate body, a pole, a hanging ring, a fixing piece and a riveted pressure ring. The pole is fixedly arranged on the cover plate body; the hanging ring is sleeved on the pole and arranged at one end of the pole; the fixing piece is connected to the pole and the hanging ring, and is used to limit the relative position of the pole and the hanging ring; the riveted pressure ring is riveted to the cover plate body and connected to the hanging ring, and is used to limit the relative position of the hanging ring and the cover plate body.

[0019] In this way, the pole and the hanging ring are stably connected through the fixing parts. When the riveted pressure ring is riveted to the cover body, since the riveted pressure ring is connected to the cover body and the hanging ring, the position of the hanging ring and the pole on the cover body can be limited, thereby improving assembly efficiency, and improving the connection stability between the pole and the cover body and the yield of the cover structure, so that the pole is not easy to loosen or fall off, thereby causing poor battery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the cover plate structure in one embodiment of the present utility model;

[0021] Figure 2 This is a partial cross-sectional view of the cover plate structure in one embodiment of the present utility model;

[0022] Figure 3 This is a partial cross-sectional view of the cover plate structure in one embodiment of the present invention, which is intended to show the riveting groove;

[0023] Figure 4 This is a partial top view of the cover plate structure in one embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the local structure of the cover structure in one embodiment of the present invention, which is intended to show the anti-rotation groove.

[0025] In the picture:

[0026] 1. Cover plate body; 11. Riveted groove; 2. Pole; 3. Hanging ring; 31. Anti-rotation groove; 4. Fixing piece; 5. Riveted pressure ring; 51. Riveted part; 52. Anti-rotation part. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0028] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0031] First, see Figure 1 and Figure 2 The utility model provides a cover structure, including a cover body 1, a pole 2, a hanging ring 3, a fixing member 4 and a riveted pressure ring 5. The pole 2 is fixedly arranged on the cover body 1; the hanging ring 3 is sleeved on the pole 2 and arranged at one end of the pole 2; the fixing member 4 is connected to the pole 2 and the hanging ring 3, and is used to limit the relative position of the pole 2 and the hanging ring 3; the riveted pressure ring 5 is riveted to the cover body 1 and connected to the hanging ring 3, and is used to limit the relative position of the hanging ring 3 and the cover body 1.

[0032] In this embodiment, the cover body 1 is a rectangular smooth aluminum sheet structure, and two poles 2 are provided. The two poles 2 are respectively arranged at both ends of the cover body 1. One pole 2 is correspondingly connected to a hanging ring 3, a fixing part 4 and a riveted pressure ring 5. The fixing part 4 is a ring structure made of plastic material. The riveted pressure ring 5 is sleeved on the outside of the fixing part 4 and fixedly connected to the fixing part 4. When the riveted pressure ring 5 is riveted to the cover body 1, the side of the riveted pressure ring 5 facing away from the cover body 1 is flush with the top surface of the cover body 1.

[0033] It should be noted that after the hanging ring 3 is assembled on the pole 2, the fixing member 4 is tightly connected to the hanging ring 3 and the pole 2 through the encapsulation process to limit the relative positions among the fixing member 4, the pole 2 and the hanging ring 3.

[0034] In this way, the fixing part 4 can stably connect the pole 2 and the hanging ring 3. Therefore, when the riveting pressure ring 5 is riveted to the cover body 1, since the riveting pressure ring 5 is connected to the cover body 1 and the hanging ring 3, the position of the hanging ring 3 and the pole 2 on the cover body 1 can be limited to avoid welding defects when the hanging ring 3 is directly welded to the cover body 1, thereby improving the connection stability between the pole 2 and the cover body 1, and thereby improving the yield of the cover structure and the quality of the battery.

[0035] It is understandable that the specific shape and material of the fixing member 4 can be flexibly adjusted according to actual needs. In this embodiment, the fixing member 4 is made of plastic material to facilitate the good combination of the fixing member 4 in a molten state with the pole 2, thereby improving the connection stability between the hanging ring 3 and the pole 2.

[0036] See Figure 2 In some embodiments, the pole 2 and the hanging ring 3 are respectively arranged on both sides of the fixing member 4, and the side of the hanging ring 3 facing away from the cover body 1 abuts against the side of the riveted pressure ring 5 facing the cover body 1. The pole 2 is connected to the inner wall of the fixing member 4, and the hanging ring 3 is connected to the outer wall of the fixing member 4, so that the pole 2 and the hanging ring 3 are connected through the fixing member 4, and the pole 2 is insulated.

[0037] In this way, when the riveted pressure ring 5 is fixedly connected to the cover body 1 by riveting, since the riveted pressure ring 5 abuts against the hanging ring 3, the riveted pressure ring 5 can press the hanging ring 3, preventing the hanging ring 3 from moving away from the cover body 1 and causing the hanging ring 3 and the pole 2 to fall off, thereby improving the connection stability between the pole 2 and the cover body 1.

[0038] It is understandable that the positions of the pole 2 and the hanging ring 3 on the fixing member 4 are not limited to the two sides of the fixing member 4. It is sufficient to limit the relative positions of the pole 2 and the hanging ring 3. No more examples are given here.

[0039] See Figure 2 In some embodiments, the projection of the riveted pressure ring 5 in the thickness direction of the cover body 1 at least partially overlaps with the projection of the hanging ring 3 in the thickness direction of the cover body 1 .

[0040] In this way, the pole 2 equipped with the hanging ring 3 is assembled to the cover body 1. By riveting the riveted pressure ring 5 to the cover body 1 and making the riveted pressure ring 5 abut against the hanging ring 3, the assembly efficiency can be improved, the position of the pole 2 on the cover body 1 can be quickly limited, the connection stability between the pole 2 and the cover body 1 can be improved, the yield of the cover structure can be improved, and the battery quality can be improved.

[0041] See Figure 2 and Figure 3 In some embodiments, the riveted pressure ring 5 includes a plurality of riveted portions 51, which are spaced apart along the center circumference of the riveted pressure ring 5 and are all riveted to the cover body 1. In this embodiment, there are four riveted portions 51, which are equally spaced apart.

[0042] In this way, the multiple riveted parts 51 can make the force on the connection between the riveted pressure ring 5 and the cover body 1 more uniform, improve the connection stability between the riveted pressure ring 5 and the cover body 1, and then improve the connection stability between the pole 2 and the cover body 1, so that the pole 2 is not easy to shake or even fall off, thereby improving the yield of the cover structure and the quality of the battery.

[0043] It is understandable that there may be three, six, eight, etc. riveted parts 51, or only one riveted part 51. The number of riveted parts 51 may be flexibly adjusted according to actual needs, as long as the riveted pressure ring 5 and the cover body 1 are stably connected. This embodiment does not limit this.

[0044] See Figure 3In some embodiments, the rivet portion 51 is a bendable rivet claw, and the cover body 1 is provided with a rivet groove 11 at a position corresponding to the rivet claw. In this embodiment, the rivet claw is formed by bending the rivet pressure ring 5. Each rivet portion 51 includes two rivet claws. During riveting, the two rivet claws bend in opposite directions. The cover body 1 is provided with a groove (not shown) for accommodating the rivet pressure ring 5. The sidewalls of the groove are provided with rivet grooves 11, so that the rivet claws can be inserted into the rivet groove 11 and complete the riveting of the rivet pressure ring 5 to the cover body 1.

[0045] In this way, the pole 2 equipped with the hanging ring 3 is placed above the cover body 1, and the riveting pressure ring 5 is sleeved on the fixing part 4, so that the riveting claw moves in the direction gradually approaching the riveting groove 11 until the riveting claw enters the riveting groove 11 and is riveted to the cover body 1. At this time, the riveting pressure ring 5 abuts against the side of the hanging ring 3 away from the cover, which can limit the position of the hanging ring 3 on the cover body 1, thereby stably connecting the pole 2 to the cover, improving the yield of the cover structure, and improving the assembly efficiency and battery quality.

[0046] It can be understood that a riveted portion 51 may also include a riveting claw, the number of riveting claws can be flexibly adjusted, and the number of riveting grooves 11 is equal to the number of riveting claws to achieve stable riveting between the riveted pressure ring 5 and the cover body 1. The number of riveted claws can be flexibly adjusted according to actual design requirements, and no further examples are given here.

[0047] See Figure 4 and Figure 5 In some embodiments, the riveted pressure ring 5 includes a rotation stop portion 52, and the hanging ring 3 has a rotation stop groove 31 at a position corresponding to the rotation stop portion 52. In this embodiment, the rotation stop portion 52 is a plate-like structure bent toward the cover body 1, and the rotation stop groove 31 on the hanging ring 3 is provided in a one-to-one correspondence with the rotation stop portion 52.

[0048] In this way, by making the anti-rotation part 52 be stuck in the anti-rotation groove 31, the connection between the riveted pressure ring 5 and the hanging ring 3 can be made more stable, and the hanging ring 3 and the riveted pressure ring 5 can be prevented from rotating relative to each other, thereby preventing the pole 2 and the cover body 1 from rotating relative to each other, thereby improving the connection stability between the pole 2 and the cover body 1 and the battery quality, simplifying the assembly steps, and improving the assembly efficiency.

[0049] It can be understood that the anti-rotation portion 52 can be set on the edge of the riveted pressure ring 5, or on the side of the riveted pressure ring 5 facing the cover body 1, and can be stuck in the anti-rotation groove 31 and further limit the position of the riveted pressure ring 5 and the hanging ring 3. No more examples will be listed here.

[0050] See Figure 4In some embodiments, a plurality of anti-rotation parts 52 are provided, and the plurality of anti-rotation parts 52 are spaced apart along the circumference of the center of the riveted pressure ring 5. For example, four anti-rotation parts 52 are provided, and the four anti-rotation parts 52 are equally spaced apart.

[0051] In this way, the multiple anti-rotation parts 52 can improve the connection stability of the riveted pressure ring 5 and the hanging ring 3, and make the force on the hanging ring 3 and the riveted pressure ring 5 more uniform, thereby improving the connection stability between the pole 2 and the cover body 1, and preventing the pole 2 from loosening or falling off; compared with welding the hanging ring 3 and the cover body 1, connecting the hanging ring 3 and the cover body 1 by riveting the hanging ring 3 is less difficult to assemble, has high assembly efficiency, can avoid welding defects, and improves the yield rate of the cover structure.

[0052] It is understandable that the number of the anti-rotation parts 52 can also be one, three, six, eight, etc. The setting position and number of the anti-rotation parts 52 can be flexibly adjusted and will not be elaborated here.

[0053] See Figure 4 In some embodiments, the rotation-stopping portions 52 and the riveted portions 51 are arranged alternately, and the rotation-stopping portions 52 and the riveted portions 51 are respectively arranged on both sides of the riveted pressure ring 5, that is, on the side of the riveted pressure ring 5 facing the pole 2 and the side facing away from the pole 2. In this embodiment, the rotation-stopping portions 52 are arranged on the side of the riveted pressure ring 5 facing the pole 2, and the riveted portions 51 are arranged on the side of the riveted pressure ring 5 facing away from the pole 2. Furthermore, the length of the rotation-stopping portions 52 is shorter than the length of the riveted portions 51.

[0054] In this way, the staggered anti-rotation parts 52 and riveted parts 51 can avoid the interference between the riveted parts 51 and the anti-rotation parts 52 after bending during the riveting process, which is conducive to the rapid assembly of the riveted pressure ring 5 and the hanging ring 3 and the cover plate body 1. The anti-rotation parts 52 and the riveted parts 51 are respectively arranged on both sides of the riveted pressure ring 5 to avoid the structural strength of one side of the riveted pressure ring 5 being too different from the structural strength of the other side, thereby improving the connection stability of the riveted pressure ring 5 and the hanging ring 3 and the cover plate body 1, and thus improving the yield of the cover plate structure.

[0055] It can be understood that the setting positions of the anti-rotation part 52 and the riveted part 51 can be flexibly adjusted according to actual design needs, so that the riveted pressure ring 5 can be stably connected to the cover body 1 through the riveted part 51, and the riveted pressure ring 5 can be stably connected to the hanging ring 3 through the anti-rotation part 52. No more examples are given here; the length of the anti-rotation part 52 can also be equal to or greater than the length of the riveted part 51. In this embodiment, the length of the anti-rotation part 52 is less than the length of the riveted part 51 in order to improve the structural strength of the position where the anti-rotation part 52 is set on the riveted pressure ring 5.

[0056] Second, see Figure 1The present invention also provides a battery, comprising a housing (not shown), a battery cell (not shown), and a cover structure. The housing is fixedly connected to the cover structure, and the battery cell is disposed within the housing and connected to the pole 2. In this embodiment, the housing and the cover body 1 are fixedly connected by welding and enclose a chamber (not shown) for accommodating the battery cell. The battery cell is electrically connected to both poles 2.

[0057] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cover plate structure, characterized in that: include: A cover plate body (1) and a pole (2), wherein the pole (2) is fixedly arranged on the cover plate body (1); A hanging ring (3), the hanging ring (3) being sleeved on the pole (2) and arranged at one end of the pole (2); A fixing member (4), the fixing member (4) being connected to both the pole (2) and the hanging ring (3) and being used to limit the relative position of the pole (2) and the hanging ring (3); A riveted pressure ring (5) is riveted to the cover plate body (1) and connected to the hanging ring (3), and is used to limit the relative position of the hanging ring (3) and the cover plate body (1).

2. The cover plate structure according to claim 1, characterized in that: The pole (2) and the hanging ring (3) are respectively arranged on both sides of the fixing member (4), and the side of the hanging ring (3) facing away from the cover plate body (1) abuts against the side of the riveted pressure ring (5) facing the cover plate body (1).

3. The cover plate structure according to claim 1, characterized in that: The projection of the riveted pressure ring (5) in the thickness direction of the cover plate body (1) and the projection of the hanging ring (3) in the thickness direction of the cover plate body (1) at least partially overlap.

4. The cover plate structure according to any one of claims 1 to 3, characterized in that: The riveted pressure ring (5) comprises a plurality of riveted portions (51), and the plurality of riveted portions (51) are spaced apart along the circumference of the center of the riveted pressure ring (5) and are all riveted to the cover plate body (1).

5. The cover plate structure according to claim 4, characterized in that: The riveting portion (51) is a bendable riveting claw, and the cover plate body (1) is provided with a riveting groove (11) at a position corresponding to the riveting claw.

6. The cover plate structure according to claim 4, characterized in that: The riveted pressure ring (5) comprises a rotation-stopping portion (52), and the hanging ring (3) is provided with a rotation-stopping groove (31) at a position corresponding to the rotation-stopping portion (52).

7. The cover plate structure according to claim 6, characterized in that: The rotation-stopping parts (52) are provided in plurality, and the rotation-stopping parts (52) are arranged at intervals along the central circumference of the riveted pressure ring (5).

8. The cover plate structure according to claim 6, characterized in that: The anti-rotation portion (52) and the riveting portion (51) are arranged alternately, and the anti-rotation portion (52) and the riveting portion (51) are respectively arranged on both sides of the riveting pressure ring (5).

9. The cover plate structure according to claim 6, characterized in that: The length of the anti-rotation portion (52) is smaller than the length of the riveting portion (51).

10. A battery, characterized in that: The battery comprises a shell, a battery cell and a cover plate structure according to any one of claims 1 to 9, wherein the shell is fixedly connected to the cover plate structure, and the battery cell is arranged inside the shell and connected to the pole (2).

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