Battery

Abstract

The utility model relates to the technical field of new energy, particularly provides a battery, and aims to solve the problem that a partition plate of an existing battery is easy to deform. Therefore, the battery provided by the utility model comprises a partition plate, a shell positioned on two sides of the partition plate, a battery cell arranged between the shell and the partition plate, and a conductive column fixed on the partition plate, a conductive sheet is arranged between the conductive column and a tab of the battery cell, the conductive sheet is respectively and fixedly connected with the conductive column and the tab, and the partition plate is provided with a convex part. The protruding part is arranged between the partition plate and the conducting strip. The bulged part is arranged on the partition plate and is positioned between the conductive sheet and the partition plate, so that the strength of the partition plate is enhanced, and the partition plate is prevented from being deformed, so that the partition plate can stably support and fix the conductive column and the conductive sheet, and the structural stability and safety of the battery are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and particularly provides a battery. Background Art

[0002] With the strengthening of people's environmental protection awareness, in order to reduce environmental pollution, the new energy industry is developing rapidly, including batteries.

[0003] In order to improve the space utilization rate and energy density of the battery, multiple independent cavities are usually arranged in the thickness direction of the battery. At least one battery cell is arranged in each cavity, and the battery cells in adjacent cavities are electrically connected through conductive columns. However, the conductive columns are usually fixed on the partition between two adjacent cavities. Since the partition is thin, the area where the conductive columns are installed is prone to deformation, affecting the structural stability and safety of the battery.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem that the partition of the existing battery is prone to deformation.

[0006] In a first aspect, the utility model provides a battery, including a partition, a housing, a battery cell arranged between the housing and the partition, and a conductive column fixed on the partition. There are two housings located on both sides of the partition respectively. A conductive sheet is arranged between the conductive column and the tab of the battery cell. The conductive sheet is fixedly connected to the conductive column and the tab respectively. The partition is provided with a protruding part, and the protruding part is arranged between the partition and the conductive sheet.

[0007] In the case of adopting the above technical solution, by arranging a protruding part on the partition, and the protruding part is located between the conductive sheet and the partition, and the conductive column is arranged in the area of the partition opposite to the conductive sheet, the strength of the area of the partition where the conductive column is arranged is enhanced, preventing the partition from deforming, so that the partition plays a stable supporting and fixing role for the conductive column and the conductive sheet, ensuring the structural stability and safety of the battery.

[0008] In a preferred technical solution of the above battery, there are multiple protruding parts.

[0009] In a preferred technical solution of the above battery, the protruding parts are arranged on both sides of the partition.

[0010] In a preferred technical solution of the above battery, the protruding part is formed by stamping.

[0011] In a preferred technical solution of the above battery, the separator is provided with a first through hole, the conductive column passes through the first through hole, and a sealing ring is provided between the conductive column and the separator.

[0012] In a preferred technical solution of the above battery, there are two conductive columns, and the protruding portion is arranged between the two conductive columns.

[0013] In a preferred technical solution of the above battery, an insulating member is provided between the conductive sheet and the separator. The insulating member is provided with a groove, and the protruding portion is arranged in the groove.

[0014] In a preferred technical solution of the above battery, the insulating member is provided with a protruding portion, and the conductive sheet is provided with a receiving groove, and the protruding portion is arranged in the receiving groove.

[0015] In a preferred technical solution of the above battery, the insulating member is provided with a second through hole, and the conductive column passes through the second through hole.

[0016] In a preferred technical solution of the above battery, the housing is provided with a pole column, and the pole column is fixedly connected to the pole ear of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention will be described below with reference to the drawings, in which:

[0018] Figure 1 is a perspective view of the battery of the present invention;

[0019] Figure 2 is an exploded view of the battery of the present invention;

[0020] Figure 3 is a perspective view of the separator and the connection assembly of the present invention;

[0021] Figure 4 is an exploded view of the separator and the connection assembly of the present invention;

[0022] Figure 5 is Figure 4 a partial enlarged view of part A of the present invention shown in;

[0023] Figure 6 is Figure 3 a partial top view of the separator and the connection assembly part of the present invention shown in;

[0024] Figure 7 is Figure 6 a cross-sectional view taken along line B-B of the present invention shown in.

[0025] LIST OF REFERENCE NUMERALS:

[0026] 100. Battery; 1. Separator; 11. First through hole; 2. Housing; 21. Cavity; 3. Battery cell; 4. Terminal; 5. Insulator; 51. Second through hole; 52. Groove; 53. Protrusion; 6. Conductive post; 7. Conductive sheet; 71. Receiving groove; 8. Protrusion; 9. Sealing ring. Detailed implementation manners

[0027] The preferred implementation manners of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model.

[0028] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "inner", "outer", "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "arrange", "connect", "install" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Specifically, first refer to Figures 1 to 7 , Figure 1 is a perspective view of the battery of the present utility model, Figure 2 is an exploded view of the battery of the present utility model, Figure 3 is a perspective view of the separator and the connection assembly of the present utility model, Figure 4 is an exploded view of the separator and the connection assembly of the present utility model, Figure 5 is Figure 4 a partial enlarged view of part A of the present utility model shown in Figure 6 is Figure 3 a partial top view of the separator and the connection assembly of the present utility model shown in Figure 7 is Figure 6 a cross-sectional view of the present utility model along line B-B shown in

[0031] In one embodiment, as shown in Figures 1 to 7 , the battery 100 of the present utility model includes a separator 1 and a housing 2. There are two housings 2 and they are respectively located on both sides of the separator 1.

[0032] Preferably, the partition 1 can be a cuboid, a cylinder, or other geometric bodies, etc. The user can select and set according to needs, and no specific limitation is made here. Further, in this embodiment, the partition 1 is a cuboid.

[0033] More preferably, the partition 1 is an aluminum plate, an aluminum plastic film, etc. The material of the partition 1 can be selected and set according to needs, and no specific limitation is made here. Further, in this embodiment, the partition 1 is an aluminum plate.

[0034] Still more preferably, the housing 2 can be a cuboid, a cylinder, or other geometric bodies, etc. The user can select and set according to needs, and no specific limitation is made here. Further, in this embodiment, the housing 2 is a cuboid.

[0035] Further preferably, two housings 2 are located on both sides of the partition 1, thereby forming two independent and enclosed cavities on both sides of the partition 1 to accommodate more battery cells, achieving the effect of improving space utilization and energy density.

[0036] Even more preferably, the housing 2 is an aluminum shell or an aluminum plastic film, etc. The material of the housing 2 can be selected and set according to needs, and no specific limitation is made here. In this embodiment, the housing 2 is an aluminum shell, so as to be firmly connected to the partition 1, such as by using a fixed connection method such as welding.

[0037] In one embodiment, the battery 100 further includes a battery cell 3 disposed between the housing 2 and the partition 1.

[0038] Preferably, the battery cell 3 includes a positive electrode plate, a negative electrode plate, and a separator located between the positive electrode plate and the negative electrode plate. The separator is used to insulate and isolate the positive electrode plate and the negative electrode plate to prevent the positive electrode plate and the negative electrode plate from contacting and causing a short circuit, ensuring the safety of the battery cell. Further, the battery cell 3 can be a wound battery cell or a stacked battery cell, etc. The user can select and set according to needs, and no specific limitation is made here.

[0039] More preferably, there are two battery cells 3 and they are respectively located on both sides of the partition 1. The two battery cells 3 are respectively disposed in the two cavities, so as to place the battery cells 3 in a closed space.

[0040] In one embodiment, the battery 100 further includes a conductive post 6 fixed to the partition 1.

[0041] Preferably, the conductive post 6 is fixed on the partition 1, and both ends of the conductive post 6 are respectively in the cavities 21 on both sides of the partition 1, so as to be fixedly connected to the electrode tabs of the battery cells in the cavities 21 respectively, realizing the electrical connection of the battery cells in the two cavities 21.

[0042] More preferably, the conductive post 6 can be a single metal piece, such as a metal like nickel, or a composite metal piece, such as a copper-aluminum composite piece, etc. The user can select and set according to needs, and no specific limitation is made here.

[0043] Even more preferably, the conductive post 6 can be a cylinder, or a cuboid or other geometric bodies, etc. The user can select and set according to needs, and no specific limitation is made here.

[0044] In one embodiment, a conductive sheet 7 is provided between the conductive post 6 and the tab of the battery cell 3, and the conductive sheet 7 is fixedly connected to the conductive post 6 and the tab respectively.

[0045] Preferably, the conductive sheet 7 is located between the tab and the end of the conductive post 6. The conductive sheet 7 is fixedly connected to the conductive post 6 and also fixedly connected to the tab, so as to realize the electrical connection between the tab and the conductive post 6.

[0046] More preferably, the conductive sheet 7 can be in a flat plate shape, or in other geometric shapes such as a frame. The user can select and set according to needs, and no specific limitation is made here. Further, in this embodiment, the conductive sheet 7 is in a flat plate shape.

[0047] Even more preferably, the conductive sheet 7 and the conductive post 6 can be integrally formed, or can be fixedly connected by welding, riveting or other connection methods. The user can select and set according to needs, and no specific limitation is made here. Further, in this embodiment, there are two conductive sheets 7 which are distributed at both ends of the conductive post 6. One of the conductive sheets 7 is integrally formed with the conductive post 6, and the other conductive sheet 7 is provided with a through hole. The conductive post 6 passes through the through hole and is fixedly connected to it by riveting.

[0048] In one embodiment, the separator 1 is provided with a protruding portion 8, and the protruding portion 8 is arranged between the separator 1 and the conductive sheet 7.

[0049] Preferably, the conductive sheet 7 is located on one side of the separator 1, and the protruding portion 8 is arranged between the conductive sheet 7 and the separator 1, so as to limit the protruding portion 8 in the area of the separator 1 opposite to the conductive sheet 7, which is also the area where the conductive post 6 is arranged, thereby significantly enhancing the structural strength of this area of the separator 1, preventing deformation of this area, and ensuring the structural stability and safety of the battery.

[0050] More preferably, the protruding portion 8 can be a cuboid, or a cylinder or other geometric bodies.

[0051] Even more preferably, the protruding portion 8 and the separator 1 can be integrally formed. In other embodiments, the protruding portion 8 is an independent piece, such as a metal block like an aluminum block, and the protruding portion 8 is fixedly connected to the separator 1 by a fixed connection method such as welding to enhance the structural strength of the separator 1.

[0052] In one embodiment, a plurality of the protruding portions 8 are provided.

[0053] Preferably, a plurality of protruding portions 8 are provided, so as to significantly enhance the anti-deformation ability of the partition plate 1 and improve the structural strength of the partition plate 1.

[0054] More preferably, the plurality of protruding portions 8 can be arranged at intervals with each other, or can be abutted against each other, or can be arranged in a matrix, etc.

[0055] Still more preferably, as Figure 5 shown, the plurality of protruding portions 8 are arranged in two rows, and the protruding portions 8 in each row are arranged at intervals in sequence. By arranging the protruding portions 8 regularly, the anti-deformation ability of the partition plate 1 can be significantly enhanced, and the structural stability and safety of the battery can be improved.

[0056] In one embodiment, the protruding portions 8 are provided on both sides of the partition plate 1.

[0057] Preferably, the plurality of protruding portions 8 are distributed on both sides of the partition plate 1, so as to ensure the balance of the anti-deformation ability of the partition plate 1 and significantly enhance the structural strength of the partition plate 1.

[0058] In other embodiments, the protruding portions 8 can also be provided only on one side of the partition plate 1, so as to simplify the process and improve the production efficiency of the product.

[0059] In one embodiment, the protruding portions 8 are formed by stamping.

[0060] Preferably, the protruding portions 8 are formed by stamping from one side of the partition plate 1 towards the other side, so as to reduce the process difficulty of the protruding portions 8 and improve the production efficiency of the protruding portions 8.

[0061] In one embodiment, the partition plate 1 is provided with a first through hole 11, the conductive column 6 passes through the first through hole 11, and a sealing ring 9 is provided between the conductive column 6 and the partition plate 1, as Figure 7 shown.

[0062] Preferably, the first through hole 11 penetrates through the surface of the partition plate 1, so as to facilitate the passing of the conductive column 6, and both ends of the conductive column 6 are respectively located in the cavities 21 on both sides of the partition plate 1.

[0063] More preferably, the shape of the first through hole 11 is adapted to the shape of the conductive column 6. In this embodiment, the conductive column 6 is a cylinder, and the first through hole 11 is also circular. In other embodiments, the conductive column 6 and the first through hole 1 can also be other geometric shapes, which are not specifically limited herein.

[0064] Still more preferably, the sealing ring 9 is provided between the conductive column 6 and the partition plate 1, so as to realize the sealing between the conductive column 6 and the partition plate 1, make the cavities 21 on both sides of the partition plate 1 block and independent from each other, and prevent the electrolytes in the two cavities 21 from flowing into each other.

[0065] Further preferably, the shape of the sealing ring 9 is adapted to the shape of the conductive post 6. In this embodiment, the conductive post 6 is a cylinder, and the sealing ring 9 is also an annular shape, such that the conductive post 6 passes through the inside of the sealing ring 9. In other embodiments, the conductive post 6 and the sealing ring 9 may also be other geometric shapes, which are not specifically limited herein.

[0066] In one embodiment, there are two conductive posts 6, and the protruding portion 8 is disposed between the two conductive posts 6.

[0067] Preferably, the two conductive posts 6 are arranged at intervals, such that there is a certain space between the two conductive posts 6. The arrangement of the two conductive posts 6 not only improves the over-current capacity between the two battery cells 3, but also enhances the structural strength and improves the structural stability.

[0068] More preferably, the protruding portion 8 is disposed between the two conductive posts 6, thereby preventing the two conductive posts 6 from tilting due to the deformation of the partition 1 between the two conductive posts 6. The tilting of the conductive posts 6 easily causes situations such as detachment from the conductive sheet 7 or short-circuiting with the partition 1, ensuring the structural stability and safety of the battery.

[0069] In one embodiment, an insulating member 5 is provided between the conductive sheet 7 and the partition 1. The insulating member 5 is provided with a groove 52, and the protruding portion 8 is disposed in the groove 52, as Figure 7 shown.

[0070] Preferably, the insulating member 5 is disposed between the conductive sheet 7 and the partition 1, thereby realizing the mutual insulation between the conductive sheet 7 and the partition 1, preventing the occurrence of short-circuit and other situations caused by the contact between the conductive sheet 7 and the partition 1, and ensuring the safety performance of the battery.

[0071] More preferably, the groove 52 is disposed on the surface of the insulating member 5 facing the partition 1. The groove 52 is recessed inward from the surface of the insulating member 5. The groove 52 may be in the shape of a cuboid or a cylinder or other geometric bodies, and the user can select and set according to needs, which are not specifically limited herein.

[0072] Even more preferably, the protruding portion 8 is disposed in the groove 52, so that on the one hand, the insulating member 5 is closely attached to the partition 1, and on the other hand, it prevents the protruding portion 8 from interfering with the insulating member 5 to affect the structural stability.

[0073] In one embodiment, the insulating member 5 is provided with an outwardly protruding portion 53, and the conductive sheet 7 is provided with a receiving groove 71, and the outwardly protruding portion 53 is disposed in the receiving groove 71.

[0074] Preferably, the convex portion 53 is disposed on the surface of the insulating member 5 facing away from the partition plate 1. The convex portion 53 extends from the surface of the insulating member 5 in a direction away from the partition plate 1. The convex portion 53 can be a cuboid, a cylinder or other geometric bodies, and no specific limitation is made here.

[0075] More preferably, the receiving groove 71 is disposed on the surface of the conductive sheet 7 facing the insulating member 5. The receiving groove 71 is formed by being recessed inward from the surface of the conductive sheet 7. Further, the receiving groove 71 can be a cuboid, a cylinder or other geometric bodies, and no specific limitation is made here.

[0076] Still more preferably, the convex portion 53 is received in the receiving groove 71, so that the conductive sheet 7 is fully attached to the insulating member 5, and the interference between the convex portion 53 and the conductive sheet 7 is prevented, ensuring the structural stability.

[0077] In one embodiment, the insulating member 5 is provided with a second through hole 51, and the conductive post 6 passes through the second through hole 51.

[0078] Preferably, the second through hole 51 penetrates the insulating member 5. Further, the second through hole 51 is disposed opposite to the first through hole 11 to communicate with each other.

[0079] More preferably, the number of the second through holes 51 is the same as the number of the conductive posts 6 and they are in one-to-one correspondence, so that each second through hole 51 has a conductive post 6 passing through it. Further, the shape of the second through hole 51 is adapted to the shape of the conductive post 6. In this embodiment, the conductive post 6 is a cylinder and the second through hole 51 is a circle, so as to facilitate the passing of the conductive post 6.

[0080] Still more preferably, the conductive post 6 passes through the second through hole 51, so that the conductive post 6 is fixedly connected to the conductive sheet 7, enhancing the structural stability of the conductive sheet 7, the insulating member 5 and the conductive post 6.

[0081] It should be noted that the above-mentioned conductive post 6, conductive sheet 7, insulating member 5 and sealing ring 9 constitute a connection assembly for realizing the electrical connection of the battery cells 3 on both sides of the partition plate 1.

[0082] In one embodiment, the housing 2 is provided with a pole post 4, and the pole post 4 is fixedly connected to the tab of the battery cell 3.

[0083] Preferably, the pole post 4 is disposed on the housing 2. Specifically, the housing 2 is provided with a through hole (not shown), and the pole post 4 passes through the through hole and is insulatedly connected to the housing 2. For example, there is an insulating plastic between the pole post 4 and the housing 2 to prevent the pole post 4 from being conducted with the housing 2 to cause a short circuit. This belongs to the prior art and will not be elaborated here.

[0084] More preferably, the terminal post 4 is electrically connected to the tab of the battery cell 3. One of the tab connected to the terminal post 4 and the tab connected to the conductive post 6 is the positive tab and the other is the negative tab, so as to output electrical energy through the terminal post 4.

[0085] Even more preferably, there are two terminal posts 4 which are respectively arranged on the housing 2 on both sides of the partition 1. One of the two terminal posts 4 is the positive terminal post and the other is the negative terminal post, so as to output electrical energy to meet the power consumption requirements.

[0086] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0087] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A battery, characterized in that: It includes a partition, a shell, a battery cell arranged between the shell and the partition, and a conductive column fixed to the partition, the shell is provided with two and respectively located on both sides of the partition, a conductive sheet is provided between the conductive column and the pole ear of the battery cell, the conductive sheet is respectively fixedly connected to the conductive column and the pole ear, and the partition is provided with a protrusion, and the protrusion is arranged between the partition and the conductive sheet.

2. The battery according to claim 1, characterized in that There are a plurality of protrusions.

3. The battery according to claim 2, characterized in that The protrusions are arranged on both sides of the partition.

4. The battery according to claim 1, characterized in that The protrusion is formed by stamping.

5. The battery according to claim 1, characterized in that The partition is provided with a first through hole, the conductive column passes through the first through hole, and a sealing ring is provided between the conductive column and the partition.

6. The battery according to claim 5, characterized in that There are two conductive pillars, and the protruding portion is disposed between the two conductive pillars.

7. The battery according to claim 1, characterized in that An insulating member is provided between the conductive sheet and the partition, the insulating member is provided with a groove, and the protrusion is arranged in the groove.

8. The battery according to claim 7, characterized in that The insulating member is provided with an outer protrusion, the conductive sheet is provided with a receiving groove, and the outer protrusion is arranged in the receiving groove.

9. The battery according to claim 7 or 8, characterized in that: The insulating member is provided with a second through hole, and the conductive column passes through the second through hole.

10. The battery according to claim 1, characterized in that The shell is provided with a pole, and the pole is fixedly connected to the pole ear of the battery cell.

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