Pole assembly and battery

Abstract

The utility model provides a kind of pole assembly and battery, the utility model embodiment's pole assembly cover plate, briquetting and pole and insulating sealing structure.Press block is located in the side of cover plate, while pole includes first cylinder and second cylinder, first cylinder is located in the other side of cover plate, second cylinder passes through cover plate, and one end of second cylinder is connected with first cylinder, the other end of second cylinder is connected with press block;Insulating sealing structure is located between first cylinder and cover plate, between second cylinder and cover plate and between press block and cover plate.Compared with the pole assembly of riveting fixed in related art, the utility model embodiment's pole assembly can reduce exposed height.Therefore, the utility model embodiment's pole assembly can reduce the exposed height of pole assembly.

Description

Technical Field

[0001] This utility model relates to the field of battery terminal technology, and in particular to a terminal assembly and a battery. Background Technology

[0002] With the advancement of lithium-ion batteries, the market demand for high-energy-density lithium-ion batteries is increasing.

[0003] In related technologies, terminal components are usually fixed to the battery casing by riveting. This fixing method often results in a high exposed height of the terminal components, which reduces the volumetric energy density of the battery.

[0004] Therefore, the pole assembly in the relevant technology has the problem of excessive exposed height. Utility Model Content

[0005] This utility model provides a terminal assembly to solve the problem of excessive exposed height of battery terminals in related technologies, thereby reducing the exposed height of the terminals.

[0006] The pole assembly of this utility model embodiment includes: Cover plate, A pressure block, wherein the pressure block is disposed on one side of the cover plate; The pole includes a first column and a second column. The first column is located on the other side of the cover plate, and the second column passes through the cover plate. One end of the second column is connected to the first column, and the other end of the second column is connected to the pressure block. An insulating and sealing structure is provided between the first column and the cover plate, between the second column and the cover plate, and between the pressure block and the cover plate.

[0007] It is understood that the first column can be used for electrical connection with the battery cell, and the connector formed by the second column and the pressure block can be used for electrical connection with external electrical equipment. That is, the other end of the pressure block and the second column, as well as the portion with insulation and sealing between the pressure block and the cover plate, constitute the exposed portion of the electrode assembly in this embodiment of the invention. The height of the portion formed by the other end of the pressure block and the second column, as well as the portion with insulation and sealing between the pressure block and the cover plate, is the height of the exposed portion of the electrode assembly in this embodiment of the invention. Specifically, the height of the exposed portion of the electrode assembly in this embodiment of the invention is the thickness of the pressure block plus the thickness of the portion with insulation and sealing between the pressure block and the cover plate. Compared to electrode assemblies fixed by riveting in related technologies, the electrode assembly in this embodiment of the invention can reduce the exposed height.

[0008] Therefore, the pole assembly of this utility model embodiment can reduce the exposed height of the pole assembly.

[0009] The pressure block has a first through hole, and the other end of the second column extends into the first through hole. The pressure block and the second column are connected by welding.

[0010] In some embodiments, the end face of the pressure block away from the cover plate is flush with the other end of the second column.

[0011] In some embodiments, the gap between the outer wall of the second column and the inner wall of the first through hole is 0-0.2 mm.

[0012] In some embodiments, the insulating sealing structure includes a first insulating seal and a second insulating seal. The first insulating seal is disposed between the first column and the cover plate, and between the second column and the cover plate; the second insulating seal is disposed between the pressure block and the cover plate, or... The first insulating seal is disposed between the first column and the cover plate, and the second insulating seal is disposed between the pressure block and the cover plate, as well as between the second column and the cover plate.

[0013] In some embodiments, the insulating sealing structure includes a first insulating seal, a second insulating seal, and a third insulating seal; The first insulating seal is disposed between the first column and the cover plate; The second insulating seal is disposed between the pressure block and the cover plate; The third insulating seal is disposed between the second column and the cover plate.

[0014] This utility model also provides a battery.

[0015] The battery of this utility model embodiment includes the terminal assembly described in the above embodiment.

[0016] In some embodiments, the battery of this utility model further includes a battery housing, which is integrally disposed with the cover plate of the terminal assembly.

[0017] In some embodiments of the present invention, the battery further includes a battery casing, and the cover plate is connected to the battery casing.

[0018] In some embodiments, the battery housing is provided with mounting holes for mounting the terminal assembly. The cover plate is disposed in the mounting hole and connected to the battery casing, or The cover plate is located inside the battery housing corresponding to the mounting hole and is connected to the battery housing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the pole assembly according to an embodiment of the present invention; Figure 2 This is an exploded view of the pole assembly according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the pole assembly according to an embodiment of the present utility model; Figure 4 This is a partially enlarged view of the insulation and sealing structure of the pole assembly according to an embodiment of the present utility model; Figure 5 This is a partially enlarged view of the insulation and sealing structure of the pole assembly according to another embodiment of the present invention; Figure 6 This is a partially enlarged view of the insulation and sealing structure of the pole assembly according to another embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the pole assembly according to an embodiment of the present utility model; Figure 8 This is an installation diagram of the pole assembly according to another embodiment of the present invention; Figure 9 This is an installation diagram of the pole assembly according to another embodiment of the present invention.

[0021] In the picture: 100. Terminal assembly; 200. Battery; 210. Battery casing; 1. Cover plate; 101. Second through hole; 2. Pressure block; 201. First through hole; 3. Pole post; 301. First column; 302. Second column; 4. Insulating and sealing structure; 401. First insulating seal; 402. Second insulating seal; 403. Third insulating seal; 6. Mounting holes; 7. Protective ring. Detailed Implementation

[0022] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal encapsulation of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In order to solve the problem of excessive exposed height of the battery 200 terminal post 3 in related technologies, and to achieve the effect of reducing the exposed height of the terminal post assembly 100, this utility model provides a terminal post assembly 100.

[0026] The present invention comprises a pole assembly 100, a cover plate 1, a pressure block 2, a pole 3, and an insulating and sealing structure 4.

[0027] As shown in the figure, the pressure block 2 is located on one side of the cover plate 1, that is, the pressure block 2 is located on one side of the cover plate 1 in the thickness direction.

[0028] Meanwhile, the pole post 3 includes a first post 301 and a second post 302. The first post 301 is located on the other side of the cover plate 1, that is, the first post 301 is located on the other side in the thickness direction of the cover plate 1. The second post 302 passes through the cover plate 1, and one end of the second post 302 is connected to the first post 301, and the other end of the second post 302 is connected to the pressure block 2. Optionally, the cover plate 1 is provided with a second through hole 101 for the second column 302 to pass through.

[0029] The insulating sealing structure 4 is provided between the first column 301 and the cover plate 1, between the second column 302 and the cover plate 1, and between the pressure block 2 and the cover plate 1.

[0030] It is understood that the first column 301 can be used for electrical connection with the battery cell, and the connector formed by the second column 302 and the pressure block 2 can be used for electrical connection with external electrical equipment. That is, the other end of the pressure block 2 and the second column 302, as well as the portion of the insulating seal between the pressure block 2 and the cover plate 1, constitute the exposed portion of the electrode assembly 100 in this embodiment of the invention. The height of the portion formed by the other end of the pressure block 2 and the second column 302, as well as the portion of the insulating seal 4 between the pressure block 2 and the cover plate 1, is the height of the exposed portion of the electrode assembly 100 in this embodiment of the invention. Specifically, the height of the exposed portion of the electrode assembly 100 in this embodiment of the invention is the thickness of the pressure block 2 plus the thickness of the portion of the insulating seal 4 between the pressure block 2 and the cover plate 1. Compared to the electrode assembly 100 fixed by riveting in related technologies, the electrode assembly 100 in this embodiment of the invention can reduce the exposed height.

[0031] Therefore, the pole assembly 100 of this utility model embodiment can reduce the exposed height of the pole assembly 100.

[0032] In some embodiments, the pressure block 2 is provided with a first through hole 201, and the other end of the second column 302 extends into the first through hole 201. The pressure block 2 and the second column 302 are welded together.

[0033] Furthermore, the end face of the pressure block 2 away from the cover plate 1 is flush with the other end of the second column 302.

[0034] By setting the end face of the pressure block 2 away from the cover plate 1 to be flush with the other end of the second column 302, it is convenient to weld the pressure block 2 to the second column 302, and at the same time, it will not increase the exposed height of the pole assembly 100 of this utility model embodiment.

[0035] In some embodiments, a gap is provided between the outer wall of the second column 302 and the first through hole 201, and the gap satisfies 0-0.2mm.

[0036] It is understandable that by setting a gap between the outer wall of the second column 302 and the first through hole 201, the second column 302 can be easily inserted into the first through hole 201. At the same time, by setting the gap between the outer wall of the second column 302 and the first through hole 201 to the above range, it is easy to weld the second column 302 and the pressure block 2.

[0037] The insulating sealing structure 4 includes a first insulating seal 401 and a second insulating seal 402. The first insulating seal 401 is disposed between the first column 301 and the cover plate 1 and between the second column 302 and the cover plate 1; the second insulating seal 402 is disposed between the pressure block 2 and the cover plate 1, or The first insulating seal 401 is disposed between the first column 301 and the cover plate 1, and the second insulating seal 402 is disposed between the pressure block 2 and the cover plate 1, as well as between the second column 302 and the cover plate 1.

[0038] It is understood that the insulating sealing structure 4 of the pole assembly 100 in this embodiment of the present invention includes two parts: a first insulating sealing member 401 and a second insulating sealing member 402, and the first insulating sealing member 401 and the second insulating sealing member 402 are configured in two ways.

[0039] Firstly, such as Figure 5 As shown, the first insulating seal 401 is disposed between the first column 301 and the cover plate 1 and between the second column 302 and the cover plate 1, and the second insulating seal 402 is disposed between the pressure block 2 and the cover plate 1. Optionally, a retaining ring 7 is provided on the outer edge of the second insulating seal 402. The retaining ring 7 extends from the second insulating seal 402 in a direction away from the cover plate. By providing the retaining ring 7, the outer peripheral surface of the pressure block 2 can be protected.

[0040] Secondly, such as Figure 4 As shown, the first insulating seal 401 is disposed between the first column 301 and the cover plate 1, and the second insulating seal 402 is disposed between the pressure block 2 and the cover plate 1, as well as between the second column 302 and the cover plate 1. Optionally, the outer edge of the second insulating seal 402 located between the pressure block 2 and the cover plate 1 is provided with a protective ring 7. The protective ring 7 extends from the second insulating seal 402 in a direction away from the cover plate. By providing the protective ring 7, the outer peripheral surface of the pressure block 2 can be protected.

[0041] The difference between the two situations is whether the part between the second column 302 and the cover plate 1 is connected to the part between the first column 301 and the cover plate 1 or to the part between the pressure block 2 and the cover plate 1. The specific connection can be set according to the insulation and sealing requirements in actual production.

[0042] By configuring the insulating sealing structure 4 to include a first insulating seal 401 and a second insulating seal 402, the insulating sealing performance between the first column 301 and the cover plate 1, between the pressure block 2 and the cover plate 1, and between the second column 302 and the cover plate 1 can be improved.

[0043] In some embodiments, such as Figure 6 As shown, the insulating sealing structure 4 includes a first insulating sealing element 401, a second insulating sealing element 402, and a third insulating sealing element 403; The first insulating seal 401 is disposed between the first column 301 and the cover plate 1; The second insulating seal 402 is disposed between the pressure block 2 and the cover plate 1; The third insulating seal 403 is disposed between the second column 302 and the cover plate 1.

[0044] Optionally, a retaining ring 7 is provided on the outer edge of the second insulating seal 402. The retaining ring 7 extends from the second insulating seal 402 in a direction away from the cover plate. By providing the retaining ring 7, the outer peripheral surface of the pressure block 2 can be protected.

[0045] It is understood that the insulating sealing structure 4 of the pole assembly 100 in this embodiment of the present invention includes three parts: a first insulating sealing member 401, a second insulating sealing member 402, and a third insulating sealing member 403.

[0046] By configuring the insulating sealing structure 4 to include a first insulating seal 401, a second insulating seal 402, and a third insulating seal 403, the insulating sealing performance between the first column 301 and the cover plate 1, between the pressure block 2 and the cover plate 1, and between the second column 302 and the cover plate 1 can be improved.

[0047] This utility model also provides a battery 200.

[0048] The battery 200 of this embodiment includes the terminal assembly 100 of the above embodiment.

[0049] By providing the terminal assembly 100 of the above embodiment, the battery 200 of this utility model can increase the volume of the battery casing 210 without changing the overall volume of the battery 200, thereby improving the volumetric energy density of the battery 200 of this utility model.

[0050] In some embodiments, the battery 200 of this utility model further includes a battery housing 210, which is integrally disposed with the cover plate 1 of the terminal assembly 100. That is, as Figure 9 As shown, the battery casing 210 can be used as the cover plate 1 of the terminal assembly 100.

[0051] In some embodiments, the battery 200 of this utility model further includes a battery housing 210, and a cover plate 1 is connected to the battery housing 210. That is, the terminal assembly 100 described in the above embodiments can be installed on the battery housing 210 as a separate component. During installation, it is only necessary to connect the cover plate 1 to the battery housing 210. The cover plate 1 and the battery housing 210 can be connected by welding.

[0052] In some embodiments, the battery housing 210 is provided with mounting holes 6 for mounting the terminal assembly 100. The cover plate 1 is located inside the mounting hole 6 and is connected to the battery casing 210, or The cover plate 1 is located inside the battery housing 210 corresponding to the mounting hole 6, and is connected to the battery housing 210. It is understood that the way the terminal assembly 100 is connected to the battery 200 assembly in the above embodiments can be divided into two cases. Firstly, such as Figure 7 As shown, the cover plate 1 is disposed in the mounting hole 6 and connected to the battery housing 210, that is, the shape of the cover plate 1 is the same as that of the mounting hole 6, and the cover plate 1 is welded to the mounting hole 6.

[0053] Secondly, such as Figure 8 As shown, the cover plate 1 is located inside the battery housing 210 corresponding to the mounting hole 6, and is connected to the battery housing 210. That is, the size of the cover plate 1 is set to be larger than the size of the mounting hole 6, and the cover plate 1 is welded to the battery housing 210.

[0054] Furthermore, the configuration of the terminal assembly 100 can be adjusted according to the actual production requirements of the battery 200.

[0055] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A pole assembly, characterized in that, include: Cover plate (1) Pressure block (2), the pressure block (2) is disposed on one side of the cover plate (1); The pole (3) includes a first pole (301) and a second pole (302). The first pole (301) is located on the other side of the cover plate (1). The second pole (302) passes through the cover plate (1). One end of the second pole (302) is connected to the first pole (301), and the other end of the second pole (302) is connected to the pressure block (2). An insulating sealing structure (4) is provided between the first column (301) and the cover plate (1), between the second column (302) and the cover plate (1), and between the pressure block (2) and the cover plate (1).

2. The pole assembly according to claim 1, characterized in that, The pressure block (2) is provided with a first through hole (201), and the other end of the second column (302) extends into the first through hole (201). The pressure block (2) and the second column (302) are welded together.

3. The pole assembly according to claim 1, characterized in that, The end face of the pressure block (2) away from the cover plate (1) is flush with the other end of the second column (302).

4. The pole assembly according to claim 1, characterized in that, The gap between the outer wall of the second column (302) and the inner wall of the first through hole (201) is 0-0.2 mm.

5. The pole assembly according to claim 1, characterized in that, The insulating sealing structure (4) includes a first insulating seal (401) and a second insulating seal (402). The first insulating seal (401) is disposed between the first column (301) and the cover plate (1) and between the second column (302) and the cover plate (1), and the second insulating seal (402) is disposed between the pressure block (2) and the cover plate (1), or The first insulating seal (401) is disposed between the first column (301) and the cover plate (1), and the second insulating seal (402) is disposed between the pressure block (2) and the cover plate (1) and between the second column (302) and the cover plate (1).

6. The pole assembly according to claim 1, characterized in that, The insulating sealing structure (4) includes a first insulating seal (401), a second insulating seal (402) and a third insulating seal (403). The first insulating seal (401) is disposed between the first column (301) and the cover plate (1); The second insulating seal (402) is disposed between the pressure block (2) and the cover plate (1); The third insulating seal (403) is disposed between the second column (302) and the cover plate (1).

7. A battery, characterized in that, Includes the pole assembly (100) as described in any one of claims 1-6.

8. The battery according to claim 7, characterized in that, It also includes a battery housing (210), which is integrally formed with the cover plate (1) of the terminal assembly (100).

9. The battery according to claim 7, characterized in that, It also includes a battery housing (210), and the cover plate (1) is connected to the battery housing (210).

10. The battery according to claim 9, characterized in that, The battery housing (210) is provided with mounting holes (6) for mounting the pole assembly (100). The cover plate (1) is disposed in the mounting hole (6) and connected to the battery casing (210), or The cover plate (1) is located inside the battery housing (210) corresponding to the mounting hole (6) and is connected to the battery housing (210).

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