Pole sheath structure of energy storage lithium battery

Abstract

The utility model relates to the technical field of batteries, and discloses an energy storage lithium battery pole sheath structure which comprises a sheath body, a top cover; the limiting assembly is arranged in the cavity of the sheath body and is used for supporting and limiting the pole; the limiting assembly comprises linings and a second deformation groove, a plurality of linings are arranged in a cavity of the sheath body, two extension bodies are symmetrically arranged on the wall surfaces of the linings, and the linings are of petal-shaped structures and annular structures of openings of the linings through the extension bodies. The annular structure of the opening of the lining can have certain shrinkage capacity, the lining and the sheath body can be made of plastic materials, the part, located above the sheath body, of the lining can shrink to wrap the pole, the pole is supported and protected, the protection effect is better, the part, located in the bottom face of the sheath body, of the lining cannot shrink, and the service life of the lining is prolonged. The part, penetrating through the bottom of the sheath body and located above the sheath body, of the pole is wrapped and supported by the lining, so that the pole can conveniently penetrate through the lining.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a pole column sheath structure for energy storage lithium batteries. Background Art

[0002] During the transportation and storage of batteries, in order to avoid scratching the surface of the pole column, a protective cover is usually used to provide insulation protection and mechanical protection for the pole column of the battery.

[0003] The prior art discloses a pole column protective cover and a battery (application number: CN202321122422.7), which includes an end plate and a side plate. The side plate surrounds the end plate, and the end plate and the side plate together form a receiving cavity with a first opening. The receiving cavity is used to receive the end of the battery provided with the pole column. A transparent display area is provided on the end plate, and the display area is used to display the information on the end of the battery.

[0004] In the prior art, the end plate is sleeved on the battery to realize the wrapping protection of the electrode end of the battery, and the electrode is located in the window of the end plate and is sealed and protected by a thin film to avoid short circuit and corrosion. During storage and transportation, stacking and extrusion are inevitable. For the pole column part above the end plate, there is a lack of supporting and limiting, and extrusion may cause deformation of the pole column, which will affect subsequent assembly. The thin film can only prevent short circuit and corrosion and does not have a supporting effect on the pole column, so there is a certain room for optimization.

[0005] Therefore, we propose a pole column sheath structure for energy storage lithium batteries. Content of the Utility Model

[0006] The utility model mainly solves the above technical problem of insufficient supporting and anti-deformation ability for the pole column, and provides a pole column sheath structure for energy storage lithium batteries.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions. The pole column sheath structure for energy storage lithium batteries includes:

[0008] A sheath body, a shell structure with a cavity;

[0009] A top cover, a plate structure arranged on the top of the sheath body and cooperating with the sheath body to form a sealed chamber. The top cover is detachably connected to the sheath body;

[0010] A limiting component, arranged in the cavity of the sheath body and used for supporting and limiting the pole column; the limiting component includes a bushing and a second deformation groove. A number of bushings are arranged in the cavity of the sheath body. Two extending bodies are symmetrically arranged on the wall surface of the bushing. The bushing forms a petal-shaped structure through the extending bodies. The opening of the bushing is in a ring structure. The pole column passes through the bushing and is supported and limited by the bushing.

[0011] As a preferred embodiment of the present utility model, the sheath body forms a rectangular plate structure, and rectangular grooves are provided on both the top surface and the bottom surface of the sheath body, and the bushing is located in the rectangular groove at the top of the sheath body.

[0012] As a preferred embodiment of the present utility model, the bushing and the sheath body are integrally injection-molded. The bottom of the bushing is flush with the inner top surface of the sheath body, and the top of the bushing protrudes from the inner bottom surface of the sheath body and extends above the inner bottom surface of the sheath body.

[0013] As a preferred embodiment of the present utility model, the limiting component further includes a first deformation groove and a second deformation groove. The first deformation groove and the second deformation groove are provided on the wall surface of the bushing, and the bushing forms an open annular structure through the first deformation groove and the second deformation groove.

[0014] As a preferred embodiment of the present utility model, the first deformation groove is as high as the bushing. The first deformation groove is provided on the upper end surface of the bushing and extends to the bottom end of the bushing. The second deformation groove is provided on the upper end surface of the bushing, and the depth of the second deformation groove is less than the height of the bushing.

[0015] As a preferred embodiment of the present utility model, the extension body is located in the second deformation groove. The two extension bodies are integrally formed with the bushing, and the two extension bodies extend parallel to the cavity of the bushing.

[0016] As a preferred embodiment of the present utility model, the top surface of the sheath body is provided with a convex part formed integrally. A notch adapted to the convex part is provided on the top surface of the top cover. The convex part is snapped into the notch to lock the top cover. The top cover shields and seals the rectangular groove at the top of the sheath body.

[0017] As a preferred embodiment of the present utility model, a plurality of partitions are fixedly connected to the bottom of the sheath body. The partitions are in a grid shape, and the bushing extends into the grid of the partitions.

[0018] Beneficial effects

[0019] The present utility model provides a sheath structure for the pole of an energy storage lithium battery, which has the following beneficial effects:

[0020] 1. For this sheath structure of the pole of the energy storage lithium battery, by providing a plurality of bushings and allowing the pole to pass through the bushings, the open annular structure of the bushing can have a certain contraction ability. The bushing and the sheath body can be made of plastic material. Thus, the part of the bushing above the sheath body can contract and wrap the pole, forming support and protection for the pole, and the protection effect is better. The part of the bushing located inside the bottom surface of the sheath body will not contract. The part of the pole passing through the bottom of the sheath body and located above the sheath body is wrapped and supported by the bushing, which facilitates the pole to pass through the bushing.

[0021] 2. The pole column sheath structure of the energy storage lithium battery enables the part of the bushing above the sheath body to form an opening by providing the first deformation groove and the second deformation groove. As a result, the part of the bushing above the sheath body can deform better, ensuring the limit and support of the pole column. At the same time, it can reduce the damage to the pole column caused by the interference fit during insertion.

[0022] 3. The pole column sheath structure of the energy storage lithium battery enables the sheet-shaped lithium batteries to be distributed in one-to-one correspondence by arranging partitions and using the grid shape of the partitions. The two pole columns of one battery can be inserted into the oval bushing. At the same time, the partitions can also improve the overall strength of the sheath body, ensuring the support and protection effect on the battery and the pole column. Description of the Drawings

[0023] Figure 1 is one of the overall three-dimensional views of the present utility model;

[0024] Figure 2 is the second of the overall three-dimensional views of the present utility model;

[0025] Figure 3 is the three-dimensional view of the top cover of the present utility model;

[0026] Figure 4 is the three-dimensional view of the bushing and the sheath body of the present utility model;

[0027] Figure 5 is the three-dimensional view of the bushing of the present utility model.

[0028] Legend Explanation: 10. Sheath body; 11. Top cover; 12. Partition; 20. Bushing; 21. First deformation groove; 22. Second deformation groove; 23. Extension body. Detailed Implementation Manner

[0029] The pole column sheath structure of the energy storage lithium battery, as Figure 1 and Figure 2 shown, includes:

[0030] A sheath body 10, which is a shell structure with a cavity;

[0031] A top cover 11, which is a plate structure arranged on the top of the sheath body 10 and cooperates with the sheath body 10 to form a sealed chamber. The top cover 11 is detachably connected to the sheath body 10. The pole column of the lithium battery passes through the sheath body 10 and is clamped with the top cover 11 and the sheath body 10, so that the pole column of the battery is shielded and sealed, reducing the probability of the pole column being corroded and short-circuited, and achieving protection;

[0032] As Figure 4 and Figure 5As shown in the figure, the limiting component is arranged in the cavity of the sheath body 10 and is used to support and limit the pole column. The limiting component includes a bushing 20 and a second deformation groove 22. A number of bushings 20 are arranged in the cavity of the sheath body 10. Two extending bodies 23 are symmetrically arranged on the wall surface of the bushing 20. The bushing 20 forms a petal-like structure through the extending bodies 23. The opening of the bushing 20 is in a ring structure. The pole column passes through the bushing 20 and is supported and limited by the bushing 20. The sheath body 10 forms a rectangular plate structure. Rectangular grooves are opened on both the top surface and the bottom surface of the sheath body 10. The bushing 20 is located in the rectangular groove at the top of the sheath body 10. The bushing 20 and the sheath body 10 are integrally injection-molded. The bottom of the bushing 20 is flush with the inner top surface of the sheath body 10. The top of the bushing 20 protrudes from the inner bottom surface of the sheath body 10 and extends above the inner bottom surface of the sheath body 10. By arranging a number of bushings 20 and using the pole column to pass through the bushing 20, the ring structure of the opening of the bushing 20 can have a certain contraction ability. The bushing 20 and the sheath body 10 can be made of plastic material. Furthermore, the part of the bushing 20 above the sheath body 10 can contract and wrap the pole column, forming support and protection for the pole column, and the protection effect is better. The part of the bushing 20 located inside the bottom surface of the sheath body 10 will not contract. The part of the pole column passing through the bottom of the sheath body 10 and located above the sheath body 10 is wrapped and supported by the bushing 20, which can facilitate the pole column to pass through the bushing 20.

[0033] As Figure 5 shown, the limiting component further includes a first deformation groove 21 and a second deformation groove 22. The first deformation groove 21 and the second deformation groove 22 are opened on the wall surface of the bushing 20. The bushing 20 forms an open ring structure through the first deformation groove 21 and the second deformation groove 22. The first deformation groove 21 is as high as the bushing 20. The first deformation groove 21 is opened on the upper end surface of the bushing 20 and extends to the bottom end of the bushing 20. The second deformation groove 22 is opened on the upper end surface of the bushing 20. The depth of the second deformation groove 22 is less than the height of the bushing 20. The extending body 23 is located in the second deformation groove 22. The two extending bodies 23 are integrally formed with the bushing 20. The two extending bodies 23 extend parallel to the cavity of the bushing 20. By opening the first deformation groove 21 and the second deformation groove 22, the part of the bushing 20 above the sheath body 10 forms an opening. Furthermore, the part of the bushing 20 above the sheath body 10 can deform better, ensuring the limitation and support of the pole column. At the same time, it can reduce the damage to the pole column caused by the interference fit during insertion.

[0034] As Figure 1 and Figure 3As shown in the figure, the top surface of the sheath body 10 is provided with an integrally formed protrusion, and the top surface of the top cover 11 is provided with a notch adapted to the protrusion. The protrusion is snapped into the notch to lock the top cover 11. The top cover 11 shields and seals the rectangular groove at the top of the sheath body 10. By pressing down the top cover 11, the L-shaped protrusion presses the top cover 11 tightly above the sheath body 10 to achieve the installation and fixation of the top cover 11. The top cover 11 shields the rectangular groove at the top of the sheath body 10 and forms a sealed chamber, which can protect the terminal post, reduce the oxidation and corrosion of the terminal post in contact with air, and improve the protection effect. To ensure the sealing performance, a sealing ring can be provided at the bottom of the top cover 11, which will not be elaborated here.

[0035] As Figure 2 shown in the figure, several partitions 12 are fixedly connected to the bottom of the sheath body 10. The partitions 12 are in a grid shape. The bushing 20 extends into the grid of the partitions 12. By providing the partitions 12 and using the grid shape of the partitions 12, the sheet-shaped lithium batteries can be distributed in a one-to-one correspondence. The two terminal posts of one battery can be inserted into the oval bushing 20. At the same time, the partitions 12 can also improve the overall strength of the sheath body 10 and ensure the support and protection effect on the battery and the terminal posts.

[0036] The working principle of the present invention: By providing the partitions 12 and using the grid shape of the partitions 12, the sheet-shaped lithium batteries can be distributed in a one-to-one correspondence. The two terminal posts of one battery can be inserted into the oval bushing 20. The terminal post passes through the bushing 20. The annular structure of the opening of the bushing 20 can have a certain contraction ability. The bushing 20 and the sheath body 10 can be made of plastic material. Then, the part of the bushing 20 above the sheath body 10 can shrink and wrap the terminal post to form the support and protection for the terminal post, so that the part of the bushing 20 above the sheath body 10 forms an opening. Then, the part of the bushing 20 above the sheath body 10 can deform better to reduce the damage to the terminal post caused by the interference fit. By pressing down the top cover 11, the L-shaped protrusion presses the top cover 11 tightly above the sheath body 10 to achieve the installation and fixation of the top cover 11. The top cover 11 shields the rectangular groove at the top of the sheath body 10 and forms a sealed chamber, which can protect the terminal post, reduce the oxidation and corrosion of the terminal post in contact with air, and improve the protection effect. To ensure the sealing performance, a sealing ring can be provided at the bottom of the top cover 11, which will not be elaborated here.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. The energy storage lithium battery pole sheath structure is characterized by: include: The sheath body (10) has a shell structure with a cavity; A top cover (11) is arranged on the top of the sheath body (10) and cooperates with the sheath body (10) to form a plate structure of a sealed chamber. The top cover (11) is detachably connected to the sheath body (10); A limiting component is arranged in the cavity of a sheath body (10) and is used to support and limit a pole; the limiting component comprises a bushing (20) and a second deformation groove (22); a plurality of bushings (20) are arranged in the cavity of the sheath body (10); two extension bodies (23) are symmetrically arranged on the wall surface of the bushing (20); the bushing (20) forms a petal-shaped structure through the extension bodies (23); the opening of the bushing (20) is an annular structure; the pole passes through the bushing (20) and is supported and limited by the bushing (20).

2. The energy storage lithium battery pole sheath structure according to claim 1, characterized in that: The sheath body (10) forms a rectangular plate structure, and rectangular grooves are provided on the top and bottom surfaces of the sheath body (10). The bushing (20) is located in the rectangular groove on the top of the sheath body (10).

3. The energy storage lithium battery pole sheath structure according to claim 1, characterized in that: The bushing (20) and the sleeve body (10) are integrally injection molded, the bottom of the bushing (20) is flush with the inner top surface of the sleeve body (10), and the top of the bushing (20) protrudes from the inner bottom surface of the sleeve body (10) and extends above the inner bottom surface of the sleeve body (10).

4. The energy storage lithium battery pole sheath structure according to claim 1, characterized in that: The limiting assembly further comprises a first deformation groove (21) and a second deformation groove (22); the first deformation groove (21) and the second deformation groove (22) are provided on the wall surface of the bushing (20); and the bushing (20) forms an open annular structure through the first deformation groove (21) and the second deformation groove (22).

5. The energy storage lithium battery pole sheath structure according to claim 4, characterized in that: The first deformation groove (21) is at the same height as the bushing (20), the first deformation groove (21) is opened on the upper end surface of the bushing (20) and extends to the bottom end of the bushing (20), the second deformation groove (22) is opened on the upper end surface of the bushing (20), and the depth of the second deformation groove (22) is less than the height of the bushing (20).

6. The energy storage lithium battery pole sheath structure according to claim 4, characterized in that: The extension body (23) is located in the second deformation groove (22), and the two extension bodies (23) are integrally formed with the bushing (20), and the two extension bodies (23) extend in parallel toward the cavity of the bushing (20).

7. The energy storage lithium battery pole sheath structure according to claim 1, characterized in that: The top surface of the sheath body (10) is provided with an integrally formed protrusion, and the top surface of the top cover (11) is provided with a notch adapted to the protrusion, the protrusion is inserted into the notch to lock the top cover (11), and the top cover (11) blocks and seals the rectangular groove on the top of the sheath body (10).

8. The energy storage lithium battery pole sheath structure according to claim 1, characterized in that: A plurality of partitions (12) are fixedly connected to the bottom of the sheath body (10); the partitions (12) are in a grid shape, and the bushing (20) extends into the grid of the partitions (12).

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