Battery

Abstract

The utility model relates to the technical field of new energy, in particular to a battery, and aims to solve the problems that defects are easy to generate and the rework cost is high in the welding of the existing pole and an electric connecting piece. Therefore, the battery provided by the utility model comprises a shell and a pole assembly arranged on the shell, the pole assembly comprises an end face positioned outside the shell, and a groove is formed in the end face. According to the utility model, the groove is arranged on the end face of the pole assembly, so that the elastic part of the electric connecting piece can be conveniently inserted into the groove to realize electric connection with the pole assembly, the product yield is improved, the reworking cost is low, the disassembly, maintenance or recovery is convenient, and the later use cost is reduced.

Description

Technical Field

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

[0002] With the development of society and the increase in energy demand, traditional non-renewable energy has gradually been eliminated, while renewable energy has developed rapidly, such as lithium batteries.

[0003] Traditional lithium battery packs usually use electrical connectors to electrically connect the poles of multiple single cells to output the required voltage. The electrical connectors can be electrical connecting wires or busbars. In order to achieve a stable connection with the electrical connectors, the end faces of the poles are usually designed to be flat, so that the terminals of the electrical connectors can be welded to the poles. However, welding the poles and the terminals of the electrical connectors is prone to defects, and the rework cost is high, and the production efficiency is low.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing welding of the pole and the terminal of the electric connector is prone to defects and has high rework cost.

[0006] In a first aspect, the utility model provides a battery, comprising a shell, and a pole assembly disposed on the shell, wherein the pole assembly comprises an end surface located outside the shell, and the end surface is provided with a groove.

[0007] In a preferred technical solution of the above battery, there are at least three grooves.

[0008] In a preferred technical solution of the above battery, the plurality of grooves form a ring shape.

[0009] In a preferred technical solution of the above battery, the pole assembly includes a connection block located outside the shell, and the connection block includes the end surface.

[0010] In a preferred technical solution of the above battery, the pole assembly further includes a pole, the pole includes a first end located outside the shell, the first end passes through the connecting block, and the first end is fixedly connected to the connecting block.

[0011] In a preferred technical solution of the above battery, the shell is provided with a through hole, and the pole passes through the through hole.

[0012] In a preferred technical solution of the above battery, the pole assembly further includes an insulating member located between the connection block and the shell, and the insulating member covers an end of the connection block. In a preferred technical solution of the above battery, the battery further includes a battery cell accommodated in the shell, and the pole further includes a second end located inside the shell, and the second end is electrically connected to the battery cell.

[0013] In a preferred technical solution of the above battery, the pole assembly further includes a sealing ring, the second end is plate-shaped, and the sealing ring is located between the second end and the shell.

[0014] In a preferred technical solution of the above battery, the battery further comprises an electrical connector, the electrical connector comprises an elastic portion received in the groove, the elastic portion abuts against an inner wall of the groove.

[0015] When the above technical solution is adopted, the utility model sets a groove on the end face of the pole assembly, thereby facilitating the elastic part of the electrical connector to be inserted into the groove to achieve electrical connection with the pole assembly, which not only improves the product yield, but also reduces the rework cost, facilitates disassembly, maintenance or recycling, etc., and reduces the later use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a three-dimensional diagram of the battery provided by the utility model;

[0018] Figure 2 It is a partial enlarged view of the battery provided by the utility model;

[0019] Figure 3 It is a cross-sectional view of the pole assembly of the utility model;

[0020] Figure 4 It is a cross-sectional view of the pole assembly and the electrical connector of the utility model;

[0021] Figure 5 It is a schematic diagram of the connection relationship between the pole assembly and the electrical connector of the utility model.

[0022] List of reference numerals:

[0023] 1. Shell; 2-pole assembly; 21-connecting block; 211-end face; 2111-groove; 22-pole; 221-first end; 222-second end; 23-insulating member; 24-sealing ring; 25-electrical connecting piece; 3-electrical connecting member; 31-elastic part. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the terms "inside", "outside", "upper", "lower", "top", "bottom", "left", "right", "front", "back" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "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 invention can be understood according to specific circumstances.

[0027] Specifically, see first Figures 1 to 5 , Figure 1 It is a three-dimensional diagram of the battery of the utility model. Figure 2 This is a partial enlarged view of the battery of the utility model. Figure 3 is a cross-sectional view of the pole assembly of the utility model, Figure 4 It is a cross-sectional view of the pole assembly and the electrical connector of the utility model. Figure 5 It is a schematic diagram of the connection relationship between the pole assembly and the electrical connector of the utility model.

[0028] like Figures 1 to 5 As shown, the battery of the utility model comprises a housing 1 , a battery cell (not shown) located in the housing 1 , and a pole assembly 2 arranged on the housing 1 .

[0029] Specifically, the housing 1 is usually an aluminum shell, and may also be a shell of other materials, which is not specifically limited here. The housing 1 may be in the shape of a cylinder, a cuboid, etc. The specific shape of the housing 1 may be selected and set as needed, and will not be repeated here. In this embodiment, the housing 1 is a cuboid.

[0030] More specifically, the battery cell is located in the housing 1, and the battery cell includes a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet, and the separator is used to insulate and isolate the positive electrode sheet from the negative electrode sheet, thereby preventing the positive electrode sheet from directly contacting the negative electrode sheet and causing a short circuit. Further, the battery cell can be a winding type or a laminated type. In this embodiment, the battery cell is a laminated type battery cell.

[0031] More specifically, the pole assembly 2 is disposed on the housing 1, and can be disposed on the end surface in the thickness direction of the housing 1, or disposed on the end surface in the length direction of the housing 1, or disposed on the end surface in the width direction of the housing 1, etc. In this embodiment, the pole assembly 2 is disposed on the end surface in the length direction of the housing 1. The pole assembly 2 is electrically connected to the battery cell to output electrical energy.

[0032] More specifically, one pole assembly 2 can be provided, or multiple pole assembly 2 can be provided. The pole assembly 2 can be a positive pole assembly, a negative pole assembly, or a sampling pole assembly, etc. The user can select the setting as needed. In the present embodiment, the pole assembly 2 is a sampling pole assembly.

[0033] like Figures 2 to 5 As shown, the pole assembly 2 includes an end surface 211 located outside the housing 1 , and the end surface 211 is provided with a groove 2111 .

[0034] Specifically, the end surface 211 is used for connecting with the surface of the electrical connector 3 , and the end surface is usually a plane, but can also be a curved surface.

[0035] More specifically, the groove 2111 is formed by being recessed inward from the end surface 211 , and the cross-section of the groove 2111 may be circular, rectangular, polygonal, or other geometric shapes.

[0036] By setting the groove 2111, the elastic part 31 of the electrical connector 3 can be inserted into the groove 2111, thereby realizing a detachable connection between the electrical connector 3 and the pole assembly 2, which not only improves the product yield, but also reduces the rework cost, facilitates disassembly, maintenance or recycling, etc., and reduces the later use cost.

[0037] Preferably, there are at least three grooves 2111 .

[0038] Specifically, by limiting the number of grooves 2111 as above, the connection between the electrical connector 3 and the pole assembly 2 can be ensured to be stable, and the electrical connector 3 and the pole assembly 2 can be prevented from shaking and falling off during use of the battery, thereby improving the structural stability.

[0039] Preferably, the plurality of grooves 2111 form a ring shape.

[0040] Specifically, when multiple grooves 2111 are provided, in order to achieve a stable connection with the electrical connector, the multiple grooves 2111 are surrounded by a ring, and the grooves 2111 can be evenly arranged, so that the force of the electrical connector in contact with the pole assembly 2 is balanced, thereby enhancing the stability of the structure.

[0041] More preferably, the plurality of grooves 2111 are arranged equidistantly around the circumference of the pole assembly 2 , so that the arrangement of the grooves 2111 is more balanced, which is more conducive to enhancing the stability of the structure.

[0042] Preferably, the pole assembly 2 includes a connection block 21 located outside the housing 1 , the connection block 21 includes the end surface 211 , and the groove 2111 is provided on the end surface 211 of the connection block 21 .

[0043] Specifically, the connection block 21 may be a cuboid, a cylinder, or other geometric shapes, etc. The shape of the connection block 21 may be selected and set as required, and will not be described in detail here.

[0044] More specifically, the connection block 21 is located at one side of the shell 1 in the length direction, and the end surface 211 is arranged on the connection block 21 and is the surface of the connection block 21 facing away from the shell 1 , so as to facilitate connection with the electrical connector 3 .

[0045] More specifically, the connection block 21 is made of a conductive metal material, such as aluminum or copper, so as to output the electrical energy of the battery.

[0046] Preferably, the pole assembly 2 further includes a pole 22 , and the pole 22 includes a first end 221 located outside the housing 1 , the first end 221 passes through the connection block 21 , and the first end 221 is fixedly connected to the connection block 21 .

[0047] Specifically, the pole 22 passes through the inner and outer surfaces of the shell 1, and the pole 22 includes a first end 221 located outside the shell 1. Similarly, the pole 22 also includes a second end 222 located inside the shell 1. A through hole is provided in the central area of ​​the connecting block 21, and the first end 221 passes through the through hole and is fixedly connected to the connecting block. Preferably, the first end 221 is riveted to the connecting block 21, thereby achieving a stable connection between the pole 22 and the connecting block 21 and enhancing the structural stability.

[0048] More specifically, the pole 22 is made of a conductive metal material, such as aluminum or copper, so as to output the electrical energy of the battery.

[0049] Preferably, the housing 1 is provided with a through hole, and the pole 22 passes through the through hole.

[0050] Specifically, the through hole is arranged on the end face of the shell 1 in the length direction, and the through hole passes through the inner and outer surfaces of the shell 1 to realize the connection between the inner and outer spaces of the shell 1 and facilitate the passage of the pole 22, so that the first end 221 is located outside the shell 1 to be connected to the connecting block 21, and the second end 222 is located inside the shell 1 to be connected to the battery cell.

[0051] More specifically, the second end 222 is in the shape of a plate, and the pole 22 also includes a middle area between the first end 221 and the second end 222. The cross-sectional area of ​​the second end 222 is larger than the cross-sectional area of ​​the middle area, so that the second end 222 is stuck inside the shell 1 to prevent the pole 22 from moving out of the through hole, thereby ensuring the stability of the pole assembly 2.

[0052] More specifically, the cross-sectional area of ​​the first end 221 is larger than the cross-sectional area of ​​the middle region, so that the first end 221 can be fixed on the connection block 21, thereby enhancing the stability of the structure. Preferably, the pole assembly 2 further includes an insulating member 23 between the connection block 21 and the housing 1, and the insulating member 23 covers the end of the connection block 21.

[0053] Specifically, the insulating member 23 is made of insulating material, such as plastic, so as to achieve insulation between the connection block 21 and the pole 22 and the housing 1, and prevent the connection block 21 or the pole 22 from contacting the housing 1 and causing the housing 1 to be charged.

[0054] More specifically, the insulating member 23 is preferably a hollow frame structure, and the end of the connection block 21 is accommodated in the insulating member 23, that is, the insulating member 23 covers the end of the connection block 21, thereby insulating the connection block 21. The end of the connection block 21 is the end of the connection block 21 close to the housing 1. Preferably, the connection block 21 is attached to the inner surface of the insulating member 23, so as to ensure the stability of the structure.

[0055] More specifically, the insulating member 23 is partially located between the connecting block 21 and the outer surface of the housing 1, thereby preventing the connecting block 21 from contacting the housing 1, and achieving a significant insulating effect. The lower end of the insulating member 23 is received in the through hole of the housing 1, achieving comprehensive insulation between the connecting block 21 and the housing 1.

[0056] Preferably, the battery further includes a battery cell accommodated in the shell 1 , and the pole 22 further includes a second end 222 located inside the shell 1 , and the second end 222 is electrically connected to the battery cell.

[0057] Specifically, the battery cell includes a tab (not shown), and the second end 222 is electrically connected to the tab of the battery cell, thereby achieving electrical connection between the pole 22 and the battery cell.

[0058] More specifically, the pole assembly 2 further includes an electrical connection sheet 25, one end of which is electrically connected to the pole lug of the battery cell, and the other end of which is electrically connected to the second end 222, thereby achieving electrical connection between the pole 22 and the battery cell, making the process more difficult and the yield higher. Preferably, the pole assembly 2 further includes a sealing ring 24, the second end 222 is flat, and the sealing ring 24 is located between the second end 222 and the housing 1.

[0059] Specifically, the sealing ring 24 is annular and is arranged around the pole 22. The sealing ring 24 is between the second end 222 and the inner surface of the shell 1, so that it can play a good sealing role, preventing the electrolyte in the shell 1 from leaking out or dust and water vapor outside the shell 1 from entering the shell 1. The sealing effect is significant and the stability of the battery is improved.

[0060] Preferably, the battery further comprises an electrical connector 3 , wherein the electrical connector 3 comprises an elastic portion 31 received in the groove 2111 , and the elastic portion 31 abuts against an inner wall of the groove 2111 .

[0061] Specifically, the electrical connector 3 may be a conductive member such as a bus bar for connecting the positive and negative poles of a single battery, or may be a conductive member such as an electrical connection line for connecting the poles of a single battery.

[0062] More specifically, one or more elastic members 31 can be provided on the electrical connector 3. The number of the elastic members 31 is the same as the number of the grooves 2111 and corresponds one to one. The elastic members 31 are preferably made of elastic material so that the elastic members 31 can be adaptively elastically deformed when accommodated in the grooves 2111, and the elastic members 31 abut against the inner wall of the grooves 2111, thereby realizing a stable connection between the electrical connector 3 and the pole assembly 2.

[0063] More specifically, preferably, the elastic member 31 is a closed ring or an unclosed arc, etc., and the width of the elastic member 31 is greater than the width of the groove 2111, so that the elastic member 31 is elastically deformed when accommodated in the groove 2111, and a large friction force is generated between the elastic member 31 and the inner wall of the groove 2111, thereby preventing the electrical connector 3 from falling off the pole assembly 2.

[0064] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0065] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying 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: The battery comprises a shell and a pole assembly arranged in the shell. The pole assembly comprises an end surface located outside the shell, and the end surface is provided with a groove.

2. The battery according to claim 1, characterized in that There are at least three grooves.

3. The battery according to claim 2, characterized in that The plurality of grooves form a ring shape.

4. The battery according to claim 1, characterized in that The pole assembly includes a connection block located outside the housing, and the connection block includes the end surface.

5. The battery according to claim 4, characterized in that The pole assembly further includes a pole, wherein the pole includes a first end located outside the shell, the first end passes through the connection block, and the first end is fixedly connected to the connection block.

6. The battery according to claim 5, characterized in that The shell is provided with a through hole, and the pole passes through the through hole.

7. The battery according to claim 6, characterized in that The pole assembly further includes an insulating member located between the connection block and the housing, wherein the insulating member covers an end portion of the connection block.

8. The battery according to claim 7, characterized in that The battery further includes a cell housed in the shell, and the pole further includes a second end located inside the shell, and the second end is electrically connected to the cell.

9. The battery according to claim 8, characterized in that The pole assembly further includes a sealing ring, the second end is plate-shaped, and the sealing ring is located between the second end and the shell.

10. The battery according to claim 9, characterized in that The battery further includes an electrical connector, wherein the electrical connector includes an elastic portion received in the groove, and the elastic portion abuts against an inner wall of the groove.

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