CN219801073U - Cover plate and battery - Google Patents

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a cover plate and a battery. A cover plate, comprising: a top cover having a first mounting hole; an insulating plate having a second mounting hole and disposed on a lower surface of the top cover; the pole is penetrated in the first mounting hole and the second mounting hole; the connecting piece is fixedly connected to the lower end of the pole, and is suitable for abutting the insulating plate on the top cover; and the elastic sealing piece is arranged in the first mounting hole and matched with the side wall of the pole. According to the utility model, after the bottom of the pole and the connecting sheet are fixedly installed, the pole compresses the elastic sealing element so that the elastic sealing element cannot move upwards, the connecting sheet reliably abuts against the top cover, the upper end of the abutting part compresses the lower end of the elastic sealing element, and the upper end and the lower end are in close contact at the same time, so that the creepage phenomenon can be continuously prevented, and the problem of insufficient matching reliability between the installation components of the battery cover plate in the prior art is effectively solved.

Description

Cover plate and battery

Technical Field

The utility model relates to the technical field of battery manufacturing, in particular to a cover plate and a battery.

Background

With the rapid development of electric devices, batteries are widely applied to electric tools and new energy vehicles due to their excellent characteristics, and with the wider and wider application fields of batteries, the safety of the batteries is not negligible, and the batteries are required to have high capacity and good safety.

At present, the assembly process of utmost point post and top cap is comparatively complicated, and chargeable call generally can set up a plurality of installation components such as elastic sealing spare, insulating part between utmost point post and top cap in order to guarantee the leakproofness of utmost point post and top cap, because installation component is more, and the clearance that exists between accessory and the accessory will lead to the creepage phenomenon, will make the insulating strength of insulating part decline in the past, and then take place the accident, still has the problem that the cooperation reliability is not enough between the installation component of current battery cover board.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect of insufficient matching reliability between the mounting components of the battery cover plate in the prior art, thereby providing the cover plate and the battery.

In order to solve the above problems, the present utility model provides a cover plate comprising: a top cover having a first mounting hole; an insulating plate having a second mounting hole and disposed on a lower surface of the top cover, an upper surface of the insulating plate extending upward around the second mounting hole to form an abutting portion; the pole is penetrated in the first mounting hole and the second mounting hole, and the side wall of the pole extends outwards to form a matching part; the connecting piece is fixedly connected to the lower end of the pole, and is suitable for abutting the insulating plate on the top cover; and the elastic sealing piece is arranged in the first mounting hole and matched with the side wall of the pole, and is suitable for being extruded by the matching part and tightly attached to the abutting part.

Optionally, the upper end surface of the pole is provided with a groove downwards.

Optionally, the post includes first post section and the second post section that sets up from top to bottom, and the external diameter of first post section is greater than the external diameter of second post section, and first post section forms the cooperation portion.

Optionally, the elastic sealing member includes a first set of segments, an outer wall of the first set of segments being mated with an inner wall of the first mounting hole, the inner wall of the first set of segments being mated with an outer wall of the second column segment.

Optionally, the elastic sealing member further comprises a second sleeve section arranged at the upper end of the first sleeve section, the inner wall of the second sleeve section is matched with the outer wall of the first column section, the first sleeve section and the connecting section of the second sleeve section form a matching section, and the lower end face of the second sleeve section is in butt joint with the upper surface of the top cover through the matching section.

Optionally, the cover plate further includes an explosion-proof structure, the top cover has a third mounting hole, and the explosion-proof structure is mounted at the third mounting hole.

Alternatively, the resilient seal is integrally injection molded from an insulating material.

Optionally, the resilient seal is in an interference fit with the side wall of the pole.

Optionally, the lower end of the pole is welded with the connecting sheet, and the upper surface of the connecting sheet is abutted with the lower surface of the insulating plate.

The present utility model also provides a battery including: the cover plate and the battery cell are fixedly connected, and the connecting sheet is suitable for conducting electricity.

The utility model has the following advantages:

1. after the bottom and the connection piece fixed mounting of utmost point post are good, the utmost point post compresses tightly the elastic seal spare and makes it unable upward movement, the connection piece compresses the lower extreme of elastic seal spare with the upper end compression elastic seal spare of insulation board on the top cap this moment, both in close contact simultaneously, because elastic seal spare is in compressed state, when the utmost point post takes elastic seal spare together to upwards move, the lower extreme reduction back of elastic seal spare still can with the contact closely after this moment, and then can be continuous prevent creepage phenomenon production, the problem of cooperation reliability inadequately between the installation component of battery cover plate among the prior art has effectively been solved.

2. Specifically, the pole is formed by plate stamping, and first recess forms decurrent convex hull structure, and stamping's surface of pole is smoother, need not to worry that there is the burr on the surface, effectively guarantees the shaping effect of pole.

3. The side wall interference fit of elastic seal spare and utmost point post, the internal diameter of the first cover section of elastic seal spare is less than the external diameter of the second post section of utmost point post, insert in the elastic seal spare when utmost point post, first cover section is in first compression state and good support on the wall of laminating this moment, the lower extreme and the upper end of first cover section are in the state of slightly elongating simultaneously, after the utmost point post is pressed down in the elastic seal spare and with connection piece fixed connection, the upper end of first cover section is compressed down by first post section this moment, the lower extreme of first cover section is compressed up by the insulation board, first cover section whole is crowded whole space, and then persist and be in reliable sealed state.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 shows an exploded view of a closure panel of an embodiment of the present utility model;

FIG. 2 shows a schematic cross-sectional view of the cover plate of FIG. 1;

fig. 3 shows a three-dimensional schematic of a battery according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a top cover; 11. a first mounting hole; 12. a third mounting hole; 20. an insulating plate; 21. a second mounting hole; 22. an abutting portion; 30. a pole; 31. a first column section; 32. a second column section; 33. a groove; 40. an elastic seal; 41. a first sleeve segment; 42. a second set of segments; 43. a mating section; 60. a connecting sheet; 71. an explosion-proof valve; 72. an explosion-proof protective film.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 2, the cover plate of the present embodiment includes: the top cover 10, the insulating plate 20, the pole 30, the connecting piece 60 and the elastic sealing piece 40, wherein the top cover 10 is provided with a first mounting hole 11; the insulating plate 20 has a second mounting hole 21 and is provided on the lower surface of the top cover 10, and the upper surface of the insulating plate 20 extends upward around the second mounting hole 21 to form an abutting portion 22; the pole 30 is penetrated in the first mounting hole 11 and the second mounting hole 21, and the side wall of the pole 30 extends outwards to form a matching part; the connecting piece 60 is fixedly connected to the lower end of the pole 30, and the connecting piece 60 is suitable for abutting the insulating plate 20 on the top cover 10; the elastic sealing member 40 is installed in the first mounting hole 11 and is engaged with the side wall of the pole 30, and the elastic sealing member 40 is adapted to be pressed by the engaging portion and closely fitted with the abutting portion 22.

By applying the cover plate of the embodiment, the abutting portion 22 is arranged on the insulating plate 20, after the bottom of the pole 30 and the connecting sheet 60 are fixedly installed, the pole 30 presses the elastic sealing member 40 so that the elastic sealing member cannot move upwards, the connecting sheet 60 reliably abuts the insulating plate 20 on the top cover 10, at the moment, the upper end of the abutting portion 22 compresses the lower end of the elastic sealing member 40, meanwhile, the upper end and the lower end are in tight contact with each other, and because the elastic sealing member 40 is in a compressed state, when the pole 30 moves upwards together with the elastic sealing member 40, the lower end of the elastic sealing member 40 still can be in tight contact with the abutting portion 22 after being restored, so that the creepage phenomenon can be continuously prevented, and the problem of insufficient matching reliability between mounting assemblies of the battery cover plate in the prior art is effectively solved.

Wherein the upper surface refers to the surface in the "up" direction indicated by the arrow in fig. 1, and the lower surface refers to the surface in the "down" direction indicated by the arrow in fig. 1.

In this embodiment, the upper end surface of the pole 30 is provided with the groove 33 downward, and the first groove 33 is provided to effectively reduce the substrate used by the pole 30, so that the manufacturing cost is reduced while the self weight of the pole 30 is effectively reduced.

Specifically, the pole 30 is formed by stamping a plate, the first groove 33 forms a downward convex hull structure, the surface of the stamped pole 30 is smoother, burrs on the surface are not required to be worried about, and the forming effect of the pole 30 is effectively ensured.

In this embodiment, the pole 30 includes the first pole section 31 and the second pole section 32 that set up from top to bottom, and the external diameter of first pole section 31 is greater than the external diameter of second pole section 32, and first pole section 31 forms the cooperation portion, and when pole 30 installs the back, first pole section 31 compresses tightly the upper end of elastic seal 40 downwards, prevents that elastic seal 40 from upwards removing, and sealed effect is better.

In this embodiment, the elastic sealing member 40 includes a first set of segments 41, the outer wall of the first set of segments 41 is matched with the inner wall of the first mounting hole 11, the inner wall of the first set of segments 41 is matched with the outer wall of the second column segment 32, and both the inner wall and the outer wall of the first set of segments 41 can be well matched with the wall surface to be matched, so that the sealing effect is better.

Specifically, the lower end of the first sleeve segment 41 does not protrude beyond the lower end of the first mounting hole 11, and when the pole 30 is fitted into the elastic seal member 40, the first sleeve segment 41 is compressed while the lower end extends downward.

In this embodiment, the elastic sealing member 40 further includes a second sleeve segment 42 disposed at the upper end of the first sleeve segment 41, the inner wall of the second sleeve segment 42 is matched with the outer wall of the first post segment 31, the connecting segment of the first sleeve segment 41 and the second sleeve segment 42 forms a matching segment 43, the lower end face of the second sleeve segment 32 is abutted to the upper surface of the top cover 10 through the matching segment 43, and the first sleeve segment 41, the matching segment 43 and the second sleeve segment 42 can be well wrapped on the outer wall of the post 30, so that the sealing effect is better and meanwhile failure is not easy. Wherein, the upper surface refers to the surface in the "upper" direction indicated by the arrow in fig. 1, and the lower end surface refers to the end surface in the "lower" direction indicated by the arrow in fig. 1.

Specifically, the first sleeve section 41, the matching section 43 and the second sleeve section 42 are different parts of the elastic sealing element 40, the first sleeve section 41, the matching section 43 and the second sleeve section 42 can be well attached to the matched wall surfaces, and gaps between the different parts do not need to be worried about while the sealing effect is better.

In this embodiment, the cover plate further includes an explosion-proof structure, and the top cover 10 has a third mounting hole 12, and the explosion-proof structure is mounted at the third mounting hole 12, so that the safety of the battery can be effectively improved.

Specifically, the explosion-proof structure includes an explosion-proof valve 71 and an explosion-proof protection film 72, the shapes of which are matched with those of the third mounting hole 12, and the mounting positions of the third mounting hole 12 and the explosion-proof structure can be adjusted accordingly according to different batteries.

In this embodiment, the elastic sealing member 40 is integrally injection molded by an insulating material, and after the elastic sealing member 40 is wrapped on the outer wall of the pole 30, the pole 30 can be prevented from being contacted with the top cover 10, and since the elastic sealing member 40 is made of an insulating material, the elastic sealing member can play a role in sealing and insulating at the same time, and no additional insulating member is required, so that the number of components is effectively reduced, and the processing and manufacturing processes and the installation processes are simplified.

In this embodiment, the elastic sealing member 40 is in interference fit with the side wall of the pole 30, the inner diameter of the first sleeve section 41 of the elastic sealing member 40 is smaller than the outer diameter of the second column section 32 of the pole 30, when the pole 30 is inserted into the elastic sealing member 40, the first sleeve section 41 is in a first compressed state and well abuts against the attached wall surface, meanwhile, the lower end and the upper end of the first sleeve section 41 are in a slightly elongated state, when the pole 30 is pressed down into the elastic sealing member 40 and fixedly connected with the connecting sheet 60, the upper end of the first sleeve section 41 is compressed down by the first column section 31, the lower end of the first sleeve section 41 is compressed up by the insulating plate 20, and the whole space is fully squeezed by the first sleeve section 41, so that the first sleeve section 41 is continuously in a reliable sealed state.

In this embodiment, the lower end of the pole 30 is welded to the connecting piece 60, the upper surface of the connecting piece 60 abuts against the lower surface of the insulating plate 20, and the connection mode is simple and reliable.

Specifically, the specific material and structure of the connecting piece 60 are not limited, and the connecting piece 60 can be made of various metal materials, so that a good conductive effect can be achieved, the shape of the connecting piece 60 can be sheet-shaped or block-shaped, the insulating plate 20 can be pressed while the electric conduction is achieved, the insulating plate 20 can be attached to the lower surface of the top cover 10 at any time through the connecting piece 60, and looseness between parts is prevented.

As shown in fig. 3, the present utility model also provides a battery including: the cover plate and the battery cell are fixedly connected with the connecting sheet 60, and the connecting sheet 60 is suitable for conducting electricity.

The following describes the use and installation of the cover plate of the present embodiment:

fitting the elastic seal member 40 into the first mounting hole 11; inserting the pole 30 into the elastic sealing member 40, the elastic sealing member 40 being compressed and pre-fixing the pole 30, the lower end of the elastic sealing member 40 being in a downwardly protruding state; after the connection piece 60 and the battery core are fixed, the pole 30 is pressed downwards so that the lower end face of the pole 30 exceeds the lower surface of the insulating plate 20, the pole 30 is fixedly connected with the connection piece 60, at the moment, the connection piece 60 tightly abuts the insulating plate 20 on the lower surface of the top cover 10, and the abutting part 22 upwards compresses the elastic sealing element 40 and is tightly attached to the elastic sealing element.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

1. after the bottom of the pole 30 and the connecting piece 60 are fixedly installed, the pole 30 compresses the elastic sealing element 40 so that the elastic sealing element cannot move upwards, the connecting piece 60 reliably abuts the insulating plate 20 on the top cover 10, at the moment, the upper end of the abutting portion 22 compresses the lower end of the elastic sealing element 40, and meanwhile, the upper end and the lower end are in close contact with each other, and because the elastic sealing element 40 is in a compressed state, when the pole 30 moves upwards together with the elastic sealing element 40, the lower end of the elastic sealing element 40 can still be in close contact with the abutting portion 22 after being reduced, and then the creepage phenomenon can be continuously prevented.

2. The elastic sealing piece 40 is formed by integrally injection molding an insulating material, after the elastic sealing piece 40 is wrapped on the outer wall of the pole 30, the pole 30 can be prevented from being contacted with the top cover 10, and the elastic sealing piece 40 can play a role in sealing and insulating simultaneously due to the insulating material, and the insulating piece is not required to be additionally arranged, so that the number of parts is effectively reduced, and the processing and manufacturing processes and the installation processes are simplified.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A cover sheet, comprising:

a top cover (10) having a first mounting hole (11);

an insulating plate (20) having a second mounting hole (21) and provided on the lower surface of the top cover (10), the upper surface of the insulating plate (20) extending upward around the second mounting hole (21) to form an abutting portion (22);

the pole (30) is penetrated in the first mounting hole (11) and the second mounting hole (21), and the side wall of the pole (30) extends outwards to form a matching part;

a connecting piece (60) fixedly connected to the lower end of the pole (30), wherein the connecting piece (60) is suitable for abutting the insulating plate (20) on the top cover (10);

and an elastic sealing member (40) installed in the first installation hole (11) and matched with the side wall of the pole post (30), wherein the elastic sealing member (40) is suitable for being extruded by the matched part and closely attached to the abutting part (22).

2. Cover plate according to claim 1, characterized in that the upper end face of the pole (30) is provided with a recess (33) downwards.

3. The cover plate according to claim 1, wherein the pole (30) comprises a first pole section (31) and a second pole section (32) arranged up and down, the outer diameter of the first pole section (31) being larger than the outer diameter of the second pole section (32), the first pole section (31) forming the mating portion.

4. A cover plate according to claim 3, wherein the elastic seal (40) comprises a first set of segments (41), an outer wall of the first set of segments (41) being mated with an inner wall of the first mounting hole (11), an inner wall of the first set of segments (41) being mated with an outer wall of the second set of segments (32).

5. The cover plate according to claim 4, wherein the elastic sealing member (40) further comprises a second sleeve section (42) arranged at the upper end of the first sleeve section (41), the inner wall of the second sleeve section (42) is matched with the outer wall of the first column section (31), the connecting section of the first sleeve section (41) and the second sleeve section (42) forms a matched section (43), and the lower end face of the second column section (32) is abutted with the upper surface of the top cover (10) through the matched section (43).

6. The cover plate according to any one of claims 1 to 5, further comprising an explosion-proof structure, the top cover (10) having a third mounting hole (12), the explosion-proof structure being mounted at the third mounting hole (12).

7. Cover plate according to any one of claims 1 to 5, wherein the elastic seal (40) is integrally injection molded from an insulating material.

8. The cover plate according to any one of claims 1 to 5, wherein the elastic seal (40) is an interference fit with a side wall of the pole (30).

9. The cover plate according to any one of claims 1 to 5, wherein a lower end of the pole (30) is welded to the connection piece (60), and an upper surface of the connection piece (60) abuts against a lower surface of the insulating plate (20).

10. A battery, comprising: the cover plate and the battery cell of any one of claims 1 to 9, the battery cell being fixedly connected to the connection piece (60), the connection piece (60) being adapted to be electrically conductive.