CN211480092U

CN211480092U - Novel lithium battery cover plate structure

Info

Publication number: CN211480092U
Application number: CN202020235658.1U
Authority: CN
Inventors: 陈中元; 明创业; 罗衡平
Original assignee: Wuhan Fuhang Precision Industry Co ltd
Current assignee: Wuhan Fuhang Precision Industry Co ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-09-11
Anticipated expiration: 2030-02-28

Abstract

The utility model relates to a novel lithium battery cover plate structure, including the apron of board and lock of moulding plastics at the board upside of moulding plastics, be provided with two utmost point post bases on the board of moulding plastics, all be provided with utmost point post on two utmost point post bases, utmost point post includes the aluminium post, is provided with the copper post between utmost point post base and the aluminium post, the upper and lower both ends face of copper post respectively with aluminium post and utmost point post base riveting. The upper surface of this novel injection molding plate of lithium battery cover plate structure is provided with a plurality of reference columns, and the bottom surface of apron is provided with a plurality of first locating holes, and the reference column embedding can direct lock, the location installation of being convenient for when aggregate erection in the inside in first locating hole. After the copper column and the aluminum column are closely connected through the expansion of the riveting hole, the connection part is firmer through laser welding. Riveting combination, the compound utmost point post electric conductive property of effectual assurance, the joint strength of effectual increase body coupling copper post and utmost point post base. This novel lithium battery cover plate structural security is high, the equipment of being convenient for.

Description

Novel lithium battery cover plate structure

Technical Field

The utility model belongs to the technical field of the lithium cell technique and specifically relates to a novel lithium cell cover plate structure is related to.

Background

The appearance of batteries provides important power supply guarantee for our human life, entertainment and work. With the development of society and the advancement of human civilization, a primary battery is gradually eliminated due to the disadvantages of environmental pollution, low capacity, short service life and the like, and is replaced by a secondary battery having the advantages of no pollution, large capacity, long service life and the like, wherein the unique structure and performance of a lithium battery are widely applied to various fields, such as a notebook computer, a mobile power supply, an electric tool and the like, which are typical of the secondary battery.

Poor friction welding often takes place for compound utmost point post on the current lithium cell apron leads to utmost point post from the welding department fracture, and this kind of bad utmost point post that has the fracture risk can't detect, and this battery that leads to having used the compound utmost point post of friction welding technology production has the potential safety hazard. In addition, the existing lithium battery cover plate is troublesome to assemble. Therefore, a novel lithium battery cover plate structure with high safety and convenient assembly is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide a novel lithium cell apron structure that the security is high, the equipment of being convenient for.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a novel lithium battery cover plate structure, is in including board and the lock of moulding plastics the apron of board upside, it is provided with two utmost point post bases, two to mould plastics on the board all be provided with utmost point post on the utmost point post base, utmost point post includes the aluminium post, utmost point post base with be provided with the copper post between the aluminium post, the upper and lower both ends face of copper post respectively with the aluminium post with utmost point post base riveting.

Preferably, foretell novel lithium battery cover plate structure, wherein the upper and lower both ends face of copper post all is provided with the fourth of the twelve earthly branches and presses the hole, is suitable for the fourth of the twelve earthly branches to press.

Preferably, in the novel lithium battery cover plate structure, the mortise and tenon pressing hole is conical.

Preferably, foretell novel lithium battery cover plate structure, wherein be provided with the second through-hole on the apron, be provided with first through-hole on the board of moulding plastics, first through-hole with install filter mantle, explosion-proof piece between the second through-hole, be provided with the nick on the explosion-proof piece.

Preferably, in the novel lithium battery cover plate structure, the cover plate and the injection molding plate are both provided with liquid injection holes suitable for adding electrolyte.

Preferably, in the novel lithium battery cover plate structure, a plurality of second positioning holes are formed in the edge of the filter cover, a plurality of positioning columns are arranged on the injection molding plate, and the positioning columns penetrate through the second positioning holes.

The utility model has the advantages that: the upper surface of this novel injection molding plate of lithium battery cover plate structure is provided with a plurality of reference columns, and the bottom surface of apron is provided with a plurality of first locating holes, and the reference column embedding can direct lock, the location installation of being convenient for when aggregate erection in the inside in first locating hole. After the copper column and the aluminum column are closely connected through the expansion of the riveting hole, the connection part is firmer through laser welding. Riveting combination, the compound utmost point post electric conductive property of effectual assurance, the joint strength of effectual increase body coupling copper post and utmost point post base. The problem that the composite pole produced by the traditional friction welding process is easy to break is solved, so that the safety of the battery is higher. This novel lithium battery cover plate structural security is high, the equipment of being convenient for.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the pole of FIG. 1;

FIG. 3 is a cross-sectional view of the post of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

fig. 5 is a schematic view of the overall structure of the present invention;

FIG. 6 is a schematic bottom view of the cover plate;

FIG. 7 is a bottom view of the injection molded plate.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the cover plate, 2, the board of moulding plastics, 3, the explosion-proof piece, 4, the filter mantle, 5, annotate the liquid hole, 6, utmost point post lid, 7, first through-hole, 8, the second through-hole, 9, the reference column, 10, first locating hole, 11, utmost point post, 1101, aluminium post, 1102, copper post, 1103, the hole is pressed in the fourth of the twelve earthly branches, 1104, the inclined plane is pressed in the fourth of the twelve earthly branches, 12, utmost point post base, 13, second locating hole.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, 4, 5, 6, and 7, a novel lithium battery cover plate structure includes an injection molded plate 2 and a cover plate 1 fastened on an upper side of the injection molded plate 2. The upper surface of injection molding plate 2 is provided with a plurality of reference columns 9, and the bottom surface of apron 1 is provided with a plurality of first locating holes 10, and reference column 9 imbeds in the inside of first locating hole 10, the location installation of being convenient for.

As shown in fig. 1, 2 and 3, the injection molded plate 2 is provided with two post bases 12 which are integrally injection molded with the injection molded plate 2, and the two post bases 12 are provided with a post 11, one positive electrode and one negative electrode. The pole 11 comprises an aluminum column 1101, a copper column 1102 is arranged between the pole base 12 and the aluminum column 1101, and the upper end face and the lower end face of the copper column 1102 are riveted with the aluminum column 1101 and the pole base 12 respectively. The middle part of the copper column 1102 is flat, and the middle part of the copper column 1102 is clamped by the pole base 12 and the aluminum column 1101. The upper end face and the lower end face of the copper column 1102 are provided with mortise pressing holes 1103 which are suitable for mortise pressing, and the mortise pressing holes 1103 are conical. The riveting face department of aluminium post 1101 and copper post 1102 is provided with fourth of the twelve earthly branches and presses inclined plane 1104, and the riveting face department of utmost point post base 12 and copper post 1102 also is provided with fourth of the twelve earthly branches and presses inclined plane 1104, is convenient for the expansion of copper post 1102 at the in-process of fourth of the twelve earthly branches and presses

inclined plane

1104, and 2 borders of copper post compress fourth of the twelve earthly branches after the expansion. The outer parts of the aluminum column 1101 and the copper column 1102 are provided with external threads, so that the outer cover can be conveniently fixed through the threads. The upper and lower end faces of the copper pillar 1102 and the joint between the aluminum pillar 1101 and the post base 12 are fixed by laser welding. After the copper pillar 1102 and the aluminum pillar 1101 are expanded and tightly jointed through the riveting and riveting hole 1103, the joint part is firmer through laser welding. Riveting and pressing are combined, the conductivity of the composite pole is effectively guaranteed, and the joint strength of the integrally connected copper column 1102 and the pole base 12 is effectively increased. The problem that the composite pole produced by the traditional friction welding process is easy to break is solved, so that the safety of the battery is higher.

As shown in fig. 1, 4, 5, 6 and 7, two pole covers 6 are fixed on the cover plate 1, a circular hole is arranged in the middle of each pole cover 6, and the pole 11 is embedded in the circular hole. The cover plate 1 is provided with a second through hole 8, the injection molding plate 2 is provided with a first through hole 7, and the first through hole 7 corresponds to the second through hole 8 in position and is preferably oval. A filter cover 4 and an explosion-proof sheet 3 are arranged between the first through hole 7 and the second through hole 8. The edge of the filter cover 4 is provided with a second positioning hole 13, and the positioning columns 9 positioned around the first through hole 7 penetrate through the inside of the second positioning hole 13, so that the filter cover is installed and positioned. The explosion-proof sheet 3 is provided with nicks, and the thickness of the nicks is slightly smaller. When the battery is aged and a small amount of bubbles are generated inside the battery, the internal air pressure of the battery is higher than the external atmospheric pressure, and due to the fact that the nicks are arranged on the anti-explosion piece 3, the anti-explosion piece is suitable for directional explosion at the nicks when the battery explodes and releases pressure inside the battery, meanwhile, the filter cover 4 can prevent large particles inside the battery from splashing out when the explosion happens, and the safety of the lithium battery is improved. And the cover plate 1 and the injection molding plate 2 are both provided with liquid injection holes 5 suitable for adding electrolyte. And a detachable rubber plug is arranged at the liquid injection hole 5, so that the leakage of the electrolyte in the lithium battery is prevented.

This novel injection molding plate 2 of lithium battery cover plate structure's upper surface is provided with a plurality of reference columns 9, and the bottom surface of apron 1 is provided with a plurality of first locating holes 10, and reference column 9 imbeds in the inside of first locating hole 10, but direct lock when aggregate erection, the location installation of being convenient for. After the copper pillar 1102 and the aluminum pillar 1101 are expanded and tightly jointed through the riveting and riveting hole 1103, the joint part is firmer through laser welding. Riveting and pressing are combined, the conductivity of the composite pole is effectively guaranteed, and the joint strength of the integrally connected copper column 1102 and the pole base 12 is effectively increased. The problem that the composite pole produced by the traditional friction welding process is easy to break is solved, so that the safety of the battery is higher. This novel lithium battery cover plate structural security is high, the equipment of being convenient for.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a novel lithium cell cover plate structure which characterized in that: including injection molding board (2) and lock apron (1) of injection molding board (2) upside, be provided with two utmost point post bases (12), two on injection molding board (2) all be provided with utmost point post (11) on utmost point post base (12), utmost point post (11) are including aluminium post (1101), utmost point post base (12) with be provided with copper post (1102) between aluminium post (1101), the upper and lower both ends face of copper post (1102) respectively with aluminium post (1101) with utmost point post base (12) riveting.

2. The novel lithium battery cover plate structure of claim 1, characterized in that: and the upper end face and the lower end face of the copper column (1102) are provided with riveting holes (1103) which are suitable for riveting.

3. The novel lithium battery cover plate structure of claim 2, characterized in that: the mortise pressing hole (1103) is conical.

4. The novel lithium battery cover plate structure of claim 1, characterized in that: be provided with second through-hole (8) on apron (1), be provided with first through-hole (7) on injection moulding board (2), first through-hole (7) with install filter mantle (4), explosion-proof piece (3) between second through-hole (8), be provided with the nick on explosion-proof piece (3).

5. The novel lithium battery cover plate structure of claim 1, characterized in that: and the cover plate (1) and the injection molding plate (2) are both provided with liquid injection holes (5) suitable for adding electrolyte.

6. The novel lithium battery cover plate structure of claim 4, characterized in that: the edge of the filter cover (4) is provided with a plurality of second positioning holes (13), the injection molding plate (2) is provided with a plurality of positioning columns (9), and the positioning columns (9) penetrate through the second positioning holes (13).