CN214754074U

CN214754074U - Power battery pole column assembly

Info

Publication number: CN214754074U
Application number: CN202120086315.8U
Authority: CN
Inventors: 何世亚; 郑少涌; 田桂祥
Original assignee: Dongguan Junyi Electromechanical Technology Co ltd
Current assignee: Dongguan Junyi Electromechanical Technology Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-11-16
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses a power battery pole assembly, which comprises a pole body, wherein a plastic body is sleeved outside the pole body, the plastic body is fixedly connected with a welding ring, a clearance space is formed between the welding ring and the pole body, and a sealing ring is hermetically arranged in the clearance space; the sealing ring is provided with a limiting groove, the welding ring is provided with a limiting table, and the limiting table is clamped and connected with the limiting groove; the first surface and the second surface of the sealing ring are respectively abutted against the welding ring and the pole body. The limiting table has a limiting effect on the sealing ring, the pole assembly is welded, and when the sealing ring expands under heat, the whole sealing ring cannot deform under the action of the plastic body, so that the condition of deviation or cracks is avoided, and the welding effect is ensured; when processing, only need put into the mould with each part, the injection moulding plastic body can form integral utmost point post subassembly, and process is simple, and the step is less, is favorable to reducing the cost, improves the productivity, and injection mould can produce N finished products, is applicable to batch production.

Description

Power battery pole column assembly

Technical Field

The utility model relates to a power battery technical field especially relates to a power battery pole post subassembly.

Background

With the increasing development of new energy industry, the research and development of a power battery as a key component of the new energy industry are also more and more widely concerned; the power battery has the advantages of light weight, high capacity, long service life, low self-discharge rate, no memory effect, no pollution and the like, and particularly, the power battery is widely applied to equipment such as electric bicycles, electric hardware tools and the like, and the application of the power battery in the equipment has advantages.

When the pole cylinder in the prior art is installed on the battery cover plate, a sealing ring needs to be arranged between the pole cylinder and the battery cover plate in a sealing mode, and then the pole cylinder is welded with the battery cover plate. Its shortcoming does, can produce a large amount of heats when welding utmost point cylinder, leads to the sealing washer thermal expansion to make utmost point cylinder and battery cover plate's face of weld take place off normal and crackle, thereby lead to utmost point post body poor welding, influence power battery's performance.

In view of the above, there is a need for an improved power battery in the prior art to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power battery utmost point post subassembly, the heat when solving among the prior art utmost point cylinder welding leads to the sealing washer thermal expansion, influences the technical problem of welding effect.

To achieve the purpose, the utility model adopts the following technical proposal:

a power battery pole assembly comprises a pole body, wherein a plastic body is sleeved outside the pole body, a welding ring is fixedly connected to a first end face of the plastic body, a gap space is formed between the welding ring and the pole body, and a sealing ring is hermetically arranged in the gap space;

a limiting groove is formed in the first surface of the sealing ring, a limiting table is arranged on the second surface of the welding ring, and the limiting table is connected to the limiting groove in a clamping mode; and the first surface of the sealing ring is abutted against the welding ring, and the second surface of the sealing ring is abutted against the pole body.

Optionally, the plastic body is formed by integral injection molding.

Optionally, the power battery pole assembly further comprises a fixing ring, the fixing ring is sleeved outside the pole body, and the fixing ring is embedded in the plastic body.

Optionally, the periphery of the fixing ring is provided with a plurality of notches in a surrounding manner, the inner wall of the plastic body is provided with a plurality of clamping positions matched with the notches, and the clamping positions are embedded in the notches to enable the plastic body to be fixedly connected with the fixing ring.

Optionally, an installation table is arranged on the outer side wall of one end of the pole column body in a surrounding mode, and the first surface of the installation table is abutted to the plastic body.

Optionally, the mounting table is provided with a notch, the inner wall of the plastic body is provided with a protrusion matched with the notch, and the protrusion is accommodated in the notch.

Optionally, the second surface of the welding ring is provided with a plurality of mounting grooves, the positions of the first end surface of the plastic body, which correspond to the mounting grooves, are respectively provided with a plastic column, and each plastic column is respectively embedded in one of the mounting grooves.

Compared with the prior art, the utility model discloses following beneficial effect has: during installation, a plastic body is processed and molded outside the pole body, the welding ring and the sealing ring are fixed through the plastic body to form an integral structure, and the limiting table plays a role in limiting the sealing ring and prevents the sealing ring from moving; when the welding ring is welded, the sealing ring is heated to expand, the first surface and the second surface of the sealing ring respectively and the welding ring and the pole body are always kept in a inconsistent state, the plastic body provides a fastening acting force for the whole pole body, the sealing ring is pressed to expand towards the two sides of the clearance space, the pole assembly cannot be deformed or changed in height, and therefore deviation or cracks cannot occur on the welding surface of the pole assembly when welding is guaranteed, and the welding effect is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose.

FIG. 1 is one of the schematic exploded views of a power cell post assembly;

FIG. 2 is a second schematic diagram of a power cell post assembly in an exploded configuration;

FIG. 3 is a schematic top view of a power cell post assembly;

FIG. 4 is a schematic cross-sectional view A-A of a power cell post assembly;

FIG. 5 is a schematic view of a cross-sectional structure of a power cell post assembly.

Illustration of the drawings: the pole column body 1, the plastic body 2, the welding ring 3, the clearance space 6, the sealing ring 4, the mounting table 11, the limiting groove 41, the limiting table 31, the fixing ring 5, the notch 51, the notch 111, the mounting groove 32 and the plastic column 21.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The utility model provides a power battery pole assembly, which comprises a pole column body 1, wherein a plastic body 2 is sleeved outside the pole column body 1, a welding ring 3 is fixedly connected with a first end surface of the plastic body 2, a clearance space 6 is formed between the welding ring 3 and the pole column body 1, and a sealing ring 4 is hermetically arranged in the clearance space 6;

a first surface of the sealing ring 4 is provided with a limiting groove 41, a second surface of the welding ring 3 is provided with a limiting table 31, and the limiting table 31 is connected to the limiting groove 41 in a clamping manner; and the first surface of sealing washer 4 with weld ring 3 is inconsistent, the second surface of sealing washer 4 with utmost point cylinder 1 is inconsistent.

The utility model discloses a theory of operation does: during installation, a plastic body 2 is processed and molded outside the pole column body 1, the welding ring 3 and the sealing ring 4 are fixed through the plastic body 2 to form an integral structure, and the limiting table 31 plays a role in limiting the sealing ring 4 and prevents the sealing ring 4 from displacing; when the welding ring 3 is welded, the sealing ring 4 is heated to expand, the first surface and the second surface of the sealing ring 4 are respectively kept in a state of abutting against the welding ring 3 and the pole column body 1 all the time, the plastic body 2 provides a fastening acting force for the whole pole column, the sealing ring 4 is pressed to expand towards two sides of the gap space 6, and the whole pole column assembly cannot deform or change in height, so that the welding surface of the pole column assembly cannot deviate or crack during welding, the welding effect is ensured, and the product percent of pass is improved; meanwhile, the sealing performance of the sealing ring 4 is ensured, and the air sealing of the battery is ensured.

In this embodiment, the plastic body 2 is integrally injection molded. When processing, will utmost point cylinder 1, sealing washer 4 with weld ring 3 places respectively in the preset position in the mould integrative injection moulding in the mould plastic body 2 to form integral utmost point post subassembly. The process steps are fewer, and the working efficiency and the productivity are improved; meanwhile, the area of the mold occupied by the pole component is small, the manufacturing cost is reduced, N finished products can be produced at one time, and the method is suitable for large-batch production.

Specifically, still include solid fixed ring 5, gu fixed ring 5 cover is located outside the utmost point cylinder 1, just gu fixed ring 5 sets up with imbedding in the plastic body 2. The fixing ring 5 plays a role in fixing and supporting the plastic body 2, and the stability of the overall structure of the pole assembly is guaranteed under the action similar to that of a framework, which is easy to understand.

Further, the periphery of the fixed ring 5 is provided with a plurality of incisions 51 in a surrounding manner, the inner wall of the plastic body 2 is provided with a plurality of clamping positions matched with the incisions 51, and the clamping positions are embedded in the incisions 51, so that the plastic body 2 is fixedly connected with the fixed ring 5. When the plastic body 2 is injection molded, the cut 51 can be used as an injection port; meanwhile, the clamping position is embedded in the cut 51, so that the plastic body 2 is fixedly connected with the fixing ring 5, and the stability of the overall structure of the pole assembly is improved.

In this embodiment, an outer side wall of one end of the pole column 1 is circumferentially provided with a mounting table 11, and a first surface of the mounting table 11 is abutted against the plastic body 2.

As a preferable scheme of this embodiment, the gap 111 is provided, the inner wall of the plastic body 2 is provided with a protrusion matching with the gap 111, and the protrusion is accommodated in the gap 111, so that the pole column 1 is fixedly connected to the plastic body 2, and the plastic body 2 is prevented from rotating.

In this embodiment, the second surface of the welding ring 3 is provided with a plurality of mounting grooves 32, the first end surface of the plastic body 2 is respectively provided with plastic columns 21 corresponding to the positions of the mounting grooves 32, and the plastic columns 21 are respectively embedded in one of the mounting grooves 32. During 2 injection moulding of the plastic body, it is a plurality of plastic column 21 imbeds respectively and installs in corresponding mounting groove 32, makes 2 fixed connection of the plastic body in the top surface of weld ring 3 utilizes the plastic body 2 under the molten condition to flow into postcondensation shaping in the mounting groove 32 realizes the accurate location of weld ring 3, makes weld ring 3 with plastic column 21 fixed connection, overall structure stability is good.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The power battery pole column assembly is characterized by comprising a pole column body (1), wherein a plastic body (2) is sleeved outside the pole column body (1), a welding ring (3) is fixedly connected to a first end face of the plastic body (2), a gap space (6) is formed between the welding ring (3) and the pole column body (1), and a sealing ring (4) is arranged in the gap space (6) in a sealing manner;

a limiting groove (41) is formed in the first surface of the sealing ring (4), a limiting table (31) is arranged on the second surface of the welding ring (3), and the limiting table (31) is connected to the limiting groove (41) in a clamping mode; and the first surface of the sealing ring (4) is abutted against the welding ring (3), and the second surface of the sealing ring (4) is abutted against the pole cylinder (1).

2. The power battery post assembly according to claim 1, characterized in that the plastic body (2) is injection molded in one piece.

3. The power battery pole column assembly according to claim 1, further comprising a fixing ring (5), wherein the fixing ring (5) is sleeved outside the pole column body (1), and the fixing ring (5) is embedded in the plastic body (2).

4. The power battery pole column assembly according to claim 3, characterized in that a plurality of notches (51) are circumferentially arranged on the periphery of the fixing ring (5), a plurality of clamping positions matched with the notches (51) are arranged on the inner wall of the plastic body (2), and the clamping positions are embedded in the notches (51) so that the plastic body (2) is fixedly connected with the fixing ring (5).

5. Power battery pole column assembly according to claim 1, characterized in that one end outer side wall of the pole column body (1) is provided with a mounting table (11) circumferentially, a first surface of the mounting table (11) is in abutment with the plastic body (2).

6. Power battery post assembly according to claim 5, characterized in that the mounting table (11) is provided with a notch (111), and the inner wall of the plastic body (2) is provided with a protrusion matching with the notch (111), the protrusion being received in the notch (111).

7. The power battery pole column assembly according to claim 2, characterized in that the second surface of the welding ring (3) is provided with a plurality of mounting grooves (32), the first end surface of the plastic body (2) is provided with plastic columns (21) respectively corresponding to the positions of the mounting grooves (32), and each plastic column (21) is mounted in an embedding manner in one mounting groove (32).