CN210692596U

CN210692596U - Battery top cover structure convenient to assemble

Info

Publication number: CN210692596U
Application number: CN201921994293.4U
Authority: CN
Inventors: 王有生; 远浩; 李华
Original assignee: Changzhou Red Fairy Precision Technology Co Ltd
Current assignee: Changzhou Red Fairy Precision Technology Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-06-05
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to the technical field of battery top covers, and discloses a battery top cover structure convenient to assemble, which comprises a top cover plate, a pole column, an injection molding piece and a pressing plate, wherein the top cover plate is provided with a through hole, the pole column is embedded into the through hole and is positioned at the upper part of the through hole, the injection molding piece is filled between the pole column and the through hole, and the pole column and the top cover plate are fixedly formed into a whole through the injection molding piece; the pressing plate is positioned at the lower part of the through hole and is welded and fixed with the wall surface of the through hole, and the pressing plate is abutted against the lower end surface of the pole; during assembly, the pole and the top cover plate are fixed through the injection molding part to form a whole temporarily, then the pressing plate is welded to the through hole, and the pressing plate is abutted against the lower end face of the pole, so that the whole battery top cover can be assembled, the number of components of the battery top cover is reduced, the installation of each component is convenient, and the convenience of the whole assembly process is improved; the clamp plate also plays the supporting role to the post when playing sealed effect, avoids it to take place to slide.

Description

Battery top cover structure convenient to assemble

Technical Field

The patent of the utility model relates to a battery top cap's technical field particularly, relates to convenient assembling's battery top cap structure.

Background

A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical properties of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high, and the lithium battery becomes the mainstream at present along with the development of scientific technology.

Traditional battery top cap includes top cap board, utmost point post, goes up the plastic, down plastic, explosion-proof piece and explosion-proof piece protection film etc. and utmost point post wears to establish in the top cap board, need assemble each part in proper order during the assembly.

Because the existing battery top cover parts are more, and the installation among all the parts is inconvenient during the assembly, the assembly process of the whole battery top cover is more complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide convenient assembling's battery top cap structure aims at solving prior art, and the inconvenient problem of battery top cap assembly.

The utility model discloses a battery top cap structure that realizes like this, convenient assembling, including lamina tecti, utmost point post, injection molding and clamp plate, the lamina tecti has the through hole, utmost point post embedding in the through hole, be in the upper portion of through hole, and fill between utmost point post and the through hole the injection molding, utmost point post and lamina tecti form an organic whole through the injection molding is fixed; the pressure plate comprises a welding sheet and a sealing ring, and the welding sheet is fixedly connected with the sealing ring; the pressing plate is located at the lower part of the through hole and is fixedly welded with the wall surface of the through hole, and the pressing plate is abutted to the lower end face of the pole.

Furthermore, the periphery of the pole is in a step shape, the upper part of the through hole is in a step shape, and the pole is embedded with the upper part of the through hole.

Further, the upper end face of the top cover plate extends upwards to form an enclosing section, and the enclosing section encloses and forms the upper part of the through hole.

Further, the injection molding part extends upwards to the outer part of the through hole and covers the enclosing section.

Further, the upper surface of injection molding is level and smooth to be arranged, and with the up end parallel and level of utmost point post.

Further, the upper end face of the pole protrudes upward to form an outer connection section for connection with an external circuit.

Further, the pressing plate is provided with an upward abutting surface, and the abutting surface of the pressing plate is abutted with the lower end surface of the pole in a fit manner.

Furthermore, the lower part of the through hole is outwards sunken to form a welding section, and the pressing plate is embedded in the welding section and is welded and fixed with the outer surface of the welding section.

Further, the lower surface of the pressing plate is flush with the lower end surface of the top cover plate.

Furthermore, the pressing plate is provided with a through hole, the through hole is arranged opposite to the through hole, and the inner wall of the through hole is obliquely arranged.

Compared with the prior art, the battery top cover structure convenient to assemble provided by the utility model only needs to fix the pole and the top cover plate through the injection molding part during assembly, so that the pole and the top cover plate form a whole temporarily, then the pressing plate is welded on the through hole, and the lower end surface of the abutting pole of the pressing plate can realize the assembly of the whole battery top cover, the number of parts of the battery top cover is reduced, the installation between each part is also convenient, thereby improving the convenience of the whole assembly process; the clamp plate is abutted to the lower end face of the pole column, so that the pole column and the clamp plate are sealed, impurities outside the top cover plate are prevented from entering the battery from the gap between the pole column and the clamp plate along the injection molding part and the through hole, the battery is protected, the clamp plate plays a supporting role in sealing, and the pole column is prevented from sliding.

Drawings

Fig. 1 is an exploded schematic view of a battery top cover structure provided by the present invention;

fig. 2 is a schematic perspective view of a battery top cover structure provided by the present invention;

fig. 3 is a top view of the battery top cover structure provided by the present invention;

fig. 4 is a schematic diagram of the battery top cover structure with convenient assembly provided by the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-4, the preferred embodiment of the present invention is shown.

The battery top cover structure convenient to assemble provided by the embodiment can be applied to lithium ion batteries, and of course, can also be applied to other batteries, and is not limited to the application in the embodiment.

The battery top cover structure convenient to assemble comprises a top cover plate 11, a pole 12, an injection molding part 13 and a pressing plate 14, wherein the top cover plate 11 is provided with a through hole 15, the pole 12 is embedded into the through hole 15 and is positioned at the upper part of the through hole 15, the injection molding part 13 is filled between the pole 12 and the through hole 15, and the pole 12 and the top cover plate 11 are fixedly integrated through the injection molding part 13; the pressure plate 14 comprises a welding sheet and a sealing ring, and the welding sheet is fixedly connected with the sealing ring; the pressing plate 14 is positioned below the through hole 15 and is welded and fixed to the wall surface of the through hole 15, and the pressing plate 14 abuts against the lower end surface of the pole 12.

According to the battery top cover structure convenient to assemble, the pole 12 and the top cover plate 11 are fixed through the injection molding part 13 during assembly, so that the pole 12 and the top cover plate temporarily form a whole, the pressing plate 14 is welded on the through hole 15, the pressing plate 14 abuts against the lower end face of the pole 12, the whole battery top cover can be assembled, the number of components of the battery top cover is reduced, the installation of each component is convenient, and the convenience of the whole assembly process is improved; the clamp plate 14 is abutted to the lower end face of the pole 12, so that the pole 12 and the clamp plate 14 are sealed, impurities outside the top cover plate 11 are prevented from entering the battery from the space between the pole 12 and the clamp plate 14 along the gap between the injection molding part 13 and the through hole 15, the battery is protected, the clamp plate 14 plays a role in sealing, and meanwhile, the pole 12 is also supported, and the pole is prevented from sliding.

The pressing plate 14 is formed by a sealing ring and a welding sheet into a whole in a vulcanization, plastic spraying and glue coating mode.

The clamp plate 14 is fixed with the top cover plate 11 in a welding mode, and is abutted to the lower end face of the pole 12, so that the clamp plate 14 also plays a supporting role for the pole 12, the pole 12 is prevented from slipping down, and the pole 12 is more stable on the basis of fixing the pole 12 by the injection molding part 13.

Specifically, the outer periphery of the pole 12 is stepped, the upper portion of the through hole 15 is stepped, and the pole 12 is fitted into the upper portion of the through hole 15.

The periphery of utmost point post 12 all is the echelonment with the upper portion of through hole 15, can coincide, and the first section of through hole 15 echelonment also plays the restriction effect of vertical direction to utmost point post 12 simultaneously, avoids utmost point post 12 to move up, and the fixed of cooperation injection molding 13 and the butt of clamp plate 14 have realized utmost point post 12 fixed in the ascending position of vertical direction, guarantees the stability of utmost point post 12, avoids it to take place to rock or slide.

The upper end face of the top cover plate 11 extends upwards to form an enclosing section, the enclosing section encloses the upper part of the through hole 15, and the injection molding part 13 extends upwards to the outside of the through hole 15 and covers the enclosing section.

The section is enclosed in the cladding of injection molding 13, plays the supporting role to injection molding 13 through enclosing the section on the one hand, and on the other hand injection molding 13 parcel plays the buffering guard action in the outside of enclosing the section, avoids bellied enclosing the section to receive the collision.

The upper surface of injection molding 13 is level and smooth to be arranged, and with the up end parallel and level of utmost point post 12 for utmost point post 12 and injection molding 13's upper surface smooth transition reduces utmost point post 12 and receives the possibility from the side collision, plays the guard action to utmost point post 12.

The upper end face of the pole column 12 protrudes upwards to form an outer connecting section 16 for being connected with an external circuit, and the outer connecting section 16 is higher than the injection molding part 13, so that the pole column is convenient to be in contact with the external circuit to realize electric connection.

The clamp plate 14 has an upward abutting surface, and the abutting surface of the clamp plate 14 abuts against the lower end face of the pole 12 in a fitting manner, so that the abutting area of the clamp plate 14 and the pole 12 is maximized, the maximum sealing effect is achieved, and the sealing performance of the battery top cover is enhanced.

The lower part of through hole 15 is sunken outward and is formed the welding section, and clamp plate 14 inlays in the welding section, and with the surface welded fastening of welding section, and the lower surface of clamp plate 14 is the parallel and level with the lower extreme of lamina tecti 11 and arranges, avoids clamp plate 14 to receive the collision of the inside electric core of battery or other parts, leads to clamp plate 14 to drop.

The pressing plate 14 is provided with a through hole 17, the through hole 17 is arranged opposite to the through hole 15, and the inner wall of the through hole 17 is arranged in an inclined manner.

A lower plastic plate is arranged below the top cover plate 11 and provided with a connecting hole, an opening at the upper end of the connecting hole extends upwards to form a surrounding section, the outer peripheral surface of the surrounding section is inclined, the inner wall of a through hole 17 of the pressing plate 14 is just abutted against the outer peripheral surface of the surrounding section, and the inner wall and the outer peripheral surface are both inclined and matched with each other; the connecting holes of the lower plastic plate, the through holes 17 of the pressing plate 14 and the through holes 15 of the top cover plate 11 are arranged in a right-facing manner, and the connecting sheet fixed on the battery cell penetrates through the three holes to be electrically connected with the pole 12, so that the battery cell is communicated with an external circuit.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The battery top cover structure convenient to assemble is characterized by comprising a top cover plate, a pole column, an injection molding piece and a pressing plate, wherein the top cover plate is provided with a through hole, the pole column is embedded into the through hole and positioned at the upper part of the through hole, the injection molding piece is filled between the pole column and the through hole, and the pole column and the top cover plate are fixedly integrated through the injection molding piece; the pressure plate comprises a welding sheet and a sealing ring, and the welding sheet is fixedly connected with the sealing ring; the pressing plate is located at the lower part of the through hole and is fixedly welded with the wall surface of the through hole, and the pressing plate is abutted to the lower end face of the pole.

2. The battery top cover structure convenient to assemble according to claim 1, wherein the outer circumference of the pole is stepped, the upper portion of the through hole is stepped, and the pole is embedded in the upper portion of the through hole.

3. The battery top cover structure convenient to assemble according to claim 2, wherein the upper end surface of the top cover plate extends upwards to form a surrounding section, and the surrounding section surrounds and forms the upper part of the through hole.

4. The battery top cap structure of claim 3, wherein the injection molded part extends upward to the outside of the through hole and covers the enclosing section.

5. The battery top cover structure convenient to assemble according to claim 4, wherein the upper surface of the injection-molded part is arranged flatly and flush with the upper end surface of the pole.

6. The battery top cover structure convenient to assemble according to claim 5, wherein the upper end face of the pole protrudes upward to form an external connection section for connecting with an external circuit.

7. The battery top cover structure convenient to assemble according to any one of claims 1 to 6, wherein the pressing plate is provided with an upward abutting surface, and the abutting surface of the pressing plate is abutted with the lower end surface of the pole in a fit manner.

8. The easy-to-assemble battery top cap structure of claim 7, wherein the lower portion of the through hole is recessed outward to form a welding section, and the pressing plate is embedded in the welding section and is welded and fixed to the outer surface of the welding section.

9. The easy-to-assemble battery top cover structure of claim 8, wherein the lower surface of the pressure plate is flush with the lower end surface of the top cover plate.

10. The easy-to-assemble battery top cover structure of claim 9, wherein the pressure plate has a through hole, the through hole is disposed opposite to the through hole, and an inner wall of the through hole is disposed in an inclined manner.