CN220021328U

CN220021328U - Monopole post apron assemblage structure and square battery

Info

Publication number: CN220021328U
Application number: CN202321325308.4U
Authority: CN
Inventors: 易凌英; 吴韬; 尤军
Original assignee: Shenzhen Exxon New Energy Technology Co ltd
Current assignee: Shenzhen Exxon New Energy Technology Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-14
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to the technical field of batteries, in particular to a monopole column cover plate assembly structure, which comprises a top cover plate, wherein a first groove is formed in the top cover plate, a protruding strip is arranged on the side surface in the first groove, and a clamping space is formed between the protruding strip and the bottom surface of the first groove; the lower plastic is provided with a second groove, the second groove is provided with a hanging buckle structure, the fixed end of the hanging buckle structure is fixed on the bottom surface of the second groove, and the hanging buckle end of the hanging buckle structure is embedded into the clamping space of the first groove to be buckled with the protruding strip of the first groove. The lower plastic adopts the clasp structure to be fixed with the top cover sheet, and compared with the plastic under the fixed plastic of hot melting mode adopted in the prior art, this scheme is simpler and more convenient, reduces a hot melting process, has practiced thrift the cost.

Description

Monopole post apron assemblage structure and square battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a monopole column cover plate assembly structure and a square battery.

Background

Lithium batteries are currently the main current product of the domestic battery market. According to different packaging processes, lithium batteries can be divided into three categories, namely cylindrical batteries, square batteries and soft package batteries. The square battery is a lithium battery with an aluminum shell or a steel shell as an outer packaging material and a square block as an appearance structure. The square battery has the characteristics of long cycle life, high packaging reliability, good tolerance, simple production process, high energy density, customizable volume, good heat dissipation effect and the like, and can be more suitable for the lithium battery requirements in the fields of new energy automobiles, energy storage, exploration, mapping and the like.

In the prior art, the square battery comprises a shell, a top cover assembly and a battery core, wherein the top cover assembly is usually manufactured into positive and negative terminals by more than ten parts respectively, and the parts are usually fixed in a welding or hot melting mode. Therefore, how to reduce the manufacturing process steps and the cost is an important subject to be studied in the field of batteries.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a monopole column cover plate assembly structure and a square battery, which reduce manufacturing procedures and reduce cost.

In a first aspect, the present utility model provides a monopolar pole cover plate assembly structure.

In a first implementation, a monopolar pole cover plate assembly structure includes: the top cover plate is provided with a first groove, the side surface in the first groove is provided with a protruding strip, and the protruding strip and the bottom surface of the first groove form a clamping space; the lower plastic is provided with a second groove, the second groove is provided with a hanging buckle structure, the fixed end of the hanging buckle structure is fixed on the bottom surface of the second groove, and the hanging buckle end of the hanging buckle structure is embedded into the clamping space of the first groove to be buckled with the protruding strip of the first groove.

In combination with the first implementation manner, in a second implementation manner, two ends of the lower plastic are provided with liquid leakage devices.

In combination with the second implementation manner, in a third implementation manner, the liquid leakage device includes a plurality of liquid leakage holes.

In combination with the third implementation manner, in a fourth implementation manner, the bottom surface of the second groove is divided into a first bottom surface and a second bottom surface by the hanging buckle structure, each liquid leakage hole is arranged on the first bottom surface at intervals, and the second bottom surface is provided with a rectangular hole.

In combination with the first implementation manner, in a fifth implementation manner, a plurality of reinforcing ribs are disposed in the second groove of the lower plastic.

In combination with the first implementation manner, in a sixth implementation manner, the device further includes a pole, where the pole and the top cover sheet are integrally formed.

In combination with the sixth possible implementation manner, in a seventh possible implementation manner, the pole is stamped and formed from the top cover sheet outwards.

In combination with the first implementation manner, in an eighth implementation manner, the top cover sheet is provided with an explosion-proof mounting hole and a negative terminal mounting hole at intervals, the explosion-proof mounting hole is used for mounting the explosion-proof component, and the negative terminal mounting hole is used for mounting the negative terminal.

In a second aspect, the present utility model provides a prismatic battery.

In a ninth implementation manner, the prismatic battery includes the monopolar pillar cover plate assembly structure described above.

With reference to the ninth implementation manner, in a tenth implementation manner, the square battery includes a housing and an electric core, the housing is square, and an upper end of the housing is open; the battery cell is arranged in the shell; the monopole column cover plate assembling structure is arranged at the opening of the shell; the monopole post cover plate assembly structure is electrically connected with the electric core.

According to the technical scheme, the beneficial technical effects of the utility model are as follows:

1. the lower plastic adopts the clasp structure to be fixed with the top cover sheet, and compared with the plastic under the fixed plastic of hot melting mode adopted in the prior art, this scheme is simpler and more convenient, reduces a hot melting process, has practiced thrift the cost.

2. Electrolyte is circulated through the liquid leakage holes, so that the situation of liquid accumulation between the top cover plate and the lower plastic is avoided, and the safety and the service life of the battery are improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is an overall view of a prismatic battery according to the present embodiment;

fig. 2 is a bottom view of a monopole pillar cover plate assembly structure according to the present embodiment;

FIG. 3 is a cross-sectional view of a monopole pillar cover plate assembly structure according to an embodiment;

fig. 4 is an enlarged view of a provided in the present embodiment;

fig. 5 is a bottom view of a top sheet according to the present embodiment;

fig. 6 is a cross-sectional view of a cover sheet provided in this embodiment;

fig. 7 is an enlarged view of B provided in the present embodiment;

FIG. 8 is a bottom view of a lower plastic provided in the present embodiment;

FIG. 9 is a side view of the lower plastic provided in this embodiment;

FIG. 10 is a top plan view of the coversheet provided in this embodiment;

reference numerals:

1-top cover piece, 11-first groove, 111-protruding strip, 112-joint space, 12-utmost point post, 13 explosion-proof mounting hole, 14-negative terminal mounting hole, 2-lower plastic, 21-second groove, 211-hanging knot structure, 212-weeping device, 213-strengthening rib, 3-casing, 4-monopole post apron assembly structure.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.

Referring to fig. 1, a square battery includes a housing 3, an electrical core, and a monopolar pole cover plate assembly structure 4. The casing 3 is square, and the upper end of the casing is open, so that the battery cell can be filled and electrolyte can be injected. The battery cell is installed in the shell 3, and the battery cell can realize power supply. The monopole post cover plate assembly structure 4 is arranged at the opening of the shell 3, so that the opening of the shell 3 is sealed, and electrolyte in the shell is prevented from flowing out. Simultaneously, monopole post cover plate assembly structure 4 is connected with the electricity core electricity, supplies power to external equipment through monopole post cover plate assembly structure 4.

As shown in fig. 2, 3 and 4, the present embodiment provides a monopole pillar cover board assembly structure, including: the top cover sheet 1 is provided with a first groove 11, the side surface in the first groove 11 is provided with a protruding strip 111, and the protruding strip 111 and the bottom surface of the first groove 11 form a clamping space 112; the lower plastic 2 is provided with a second groove 21, the second groove 21 is provided with a hanging buckle structure 211, the fixed end of the hanging buckle structure 211 is fixed on the bottom surface of the second groove 21, and the hanging buckle end of the hanging buckle structure 211 is embedded into the clamping space 112 of the first groove 11 to realize the buckling with the protruding strip 111 of the first groove 11.

In some embodiments, as shown in fig. 5, 6 and 7, the first groove 11 is disposed at one end of the lower surface of the top cover sheet 1, one side of the inner wall of the first groove 11 is provided with a protruding strip 111, the protruding strip 111 and the bottom surface of the first groove 11 form a clamping space 112, and the clamping space 112 and the hanging buckle structure 211 can be fastened.

As shown in fig. 8, the two ends of the lower plastic 2 are provided with the liquid leakage devices 212, the liquid leakage devices 212 can discharge the electrolyte between the lower plastic 2 and the top cover sheet 1 into the shell of the battery, and the electrolyte is circulated through the liquid leakage devices 212, so that the situation of liquid accumulation between the top cover sheet 1 and the lower plastic 2 is avoided. In one embodiment, the weeping device 212 includes a plurality of weeping apertures. Of course, in other embodiments, the drain 212 may be a drain conduit.

In some embodiments, as shown in fig. 8 and 9, a hanging structure 211 is disposed in the middle of the second groove 21, a fixed end of the hanging structure 211 is fixed on the bottom surface of the second groove 21, and a hanging end of the hanging structure 211 protrudes out of the second groove 21. The bottom surface of the second groove 21 is divided into two bottom surfaces by the hanging buckle structure 211, and each liquid leakage hole is arranged on one of the bottom surfaces at intervals. The second groove 21 can collect the injected electrolyte, and then the electrolyte in the second groove 21 is discharged through the leakage hole.

A plurality of reinforcing ribs 213 are arranged on two bottom surfaces in the second groove 21 of the lower plastic 2. In one embodiment, the stiffener 213 is a triangular block. In another embodiment, the stiffener 213 is a trapezoidal block. The second groove 21 of the lower plastic 2 is internally provided with the reinforcing ribs 213 so as to increase the strength of the side wall of the rubber piece and avoid the deformation of the second groove 21 of the lower plastic 2. The lower plastic 2 may deform under the condition of temperature rise or overlarge pressure, and the second groove 21 of the lower plastic 2 is provided with more supporting force by the reinforcing ribs 213, so that deformation is avoided, the reliability of the top cover assembly structure is improved, and the service life of the battery is prolonged.

Referring to fig. 10, the monopole pillar cover plate assembly structure further includes a pole 12, where the pole 12 and the top cover sheet 1 are integrally formed. Further, the pole 12 is stamped and formed outwardly from the top cover sheet 1. The connecting process of the pole 12 is reduced, and structural components such as an anode insulating ring, an anode sealing ring and the like are also reduced. The number of structural members of the top cover assembly is optimized, the manufacturing association cost is optimized, meanwhile, the weight of the battery is reduced, the energy consumption waste and the labor and manufacturing cost are saved, and the 5M1E investment is further reduced.

As shown in fig. 10, the top cover sheet 1 is provided with explosion-proof mounting holes 13 and negative terminal mounting holes 14 at intervals, the explosion-proof mounting holes 13 are used for mounting explosion-proof components, and the negative terminal mounting holes 14 are used for mounting negative terminals.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. A monopolar pole cover plate assembly structure comprising:

the top cover plate is provided with a first groove, the side surface in the first groove is provided with a protruding strip, and the protruding strip and the bottom surface of the first groove form a clamping space;

the lower plastic is provided with a second groove, the second groove is provided with a hanging buckle structure, the fixed end of the hanging buckle structure is fixed on the bottom surface of the second groove, and the hanging buckle end of the hanging buckle structure is embedded into the clamping space of the first groove to be buckled with the protruding strip of the first groove.

2. The monopole pillar cover assembly structure according to claim 1, wherein the lower plastic is provided with liquid leakage means at both ends.

3. The monopolar column cap plate assembly structure of claim 2, wherein the weeping means comprises a plurality of weeping holes.

4. A monopole pillar cover assembly structure according to claim 3, wherein the bottom surface of the second recess is divided into two bottom surfaces by a hanging structure, and each weeping hole is provided at a distance on one of the bottom surfaces.

5. The monopole pillar cover assembly structure according to claim 1, wherein a plurality of reinforcing ribs are disposed in the second groove of the lower plastic.

6. The monopolar pole cover plate assembly structure of claim 1, further comprising a pole, the pole and the top cover piece being integrally formed.

7. The monopolar pole cover plate assembly structure of claim 6 wherein the pole is stamped and formed outwardly from the top cover piece.

8. The monopolar pole cover plate assembly structure of claim 1, wherein the top cover piece is provided with explosion-proof mounting holes and negative terminal mounting holes at intervals, the explosion-proof mounting holes being used for mounting explosion-proof components, and the negative terminal mounting holes being used for mounting negative terminals.

9. A prismatic battery comprising a monopolar pillar cover plate assembly structure according to any of claims 1 to 8.

10. The square battery according to claim 9, comprising a housing and a cell, wherein the housing is square and has an upper end opened; the battery cell is arranged in the shell; the monopole column cover plate assembling structure is arranged at the opening of the shell; the monopole post cover plate assembly structure is electrically connected with the electric core.