CN210576041U

CN210576041U - Power battery cover plate and power battery

Info

Publication number: CN210576041U
Application number: CN201921956514.9U
Authority: CN
Inventors: 励建炬; 邱宜升; 石从兵; 刘勇
Original assignee: Shenzhen Kedali Industry Co ltd
Current assignee: Shenzhen Kedali Industry Co ltd; Shenzhen Kedali Ind Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-05-19
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a power battery apron and power battery, this power battery apron include top cap spare, sealing member and utmost point post. The top cover piece is provided with a lightening hole and a mounting groove arranged around the lightening hole. The sealing element is provided with a mounting protrusion arranged corresponding to the mounting groove, and the sealing element is configured to cover the lightening hole. The utmost point post is two, and two utmost point posts all wear to establish in the roof piece. The dead weight of the top cover piece can be effectively reduced through the lightening holes in the top cover piece, the connection strength between the sealing piece and the top cover piece can be enhanced through the matching of the mounting protrusions and the mounting grooves, the sealing piece is stably connected with the top cover piece, the mechanical strength of the power battery cover plate in the vertical direction is enhanced, and the service life of the power battery cover plate is prolonged. In addition, the sealing element is buckled on the mounting groove, so that the internal space of the battery connected with the power battery cover plate can be enlarged, and the energy density of the battery is improved.

Description

Power battery cover plate and power battery

Technical Field

The utility model relates to a power battery technical field especially relates to a power battery apron and power battery.

Background

The structure of the conventional power battery cover plate is formed by riveting or injection molding of a pole, and in the manufacturing process of the cover plate, multiple components are required to be molded, so that the manufacturing process is complex, the manufacturing cost is high, and the internal space of the battery is occupied greatly. Under this background, the development of a novel light-weight structure cover plate can effectively overcome various problems, simplify the manufacturing process, reduce the manufacturing cost, increase the internal space of the battery and improve the energy density, and the cover plate is light-weight, and is an improvement and innovation for the cover plate of the automobile power battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery apron, can reduce the manufacturing cost of power battery apron and make its lightweight, increase the battery inner space, promote the inside energy density of battery.

Another object of the present invention is to provide a power battery having the power battery cover plate.

For realizing the technical effect, the utility model discloses a technical scheme of power battery apron as follows:

a power cell cover plate comprising:

the top cover piece is provided with a lightening hole and an installation groove arranged around the lightening hole;

the sealing element is provided with a mounting protrusion arranged corresponding to the mounting groove and is configured to cover the lightening hole;

the utmost point post, utmost point post is two, two utmost point post all wears to establish in the sealing member.

In some embodiments, the mounting protrusion is disposed along a periphery of the seal member, and the seal member and the mounting protrusion are an integral injection molded part.

In some embodiments, the mounting slots are two and spaced apart, and one of the sealing members is snap-fitted into each of the mounting slots.

In some embodiments, the sealing member is provided with at least two fitting holes, each of the fitting holes is fitted with one of the poles, a fitting groove is formed on an outer circumferential surface of each of the poles, and the sealing member is inserted into the fitting groove.

In some embodiments, the power cell cover plate further comprises an explosion-proof piece embedded in the sealing member.

In some embodiments, the sealing member is provided with a mounting hole, a groove is formed on the inner wall of the mounting hole, and the explosion-proof member is inserted into the groove.

In some embodiments, the cap is disposed flush with an upper surface of the seal, and an upper surface of the post is higher than an upper surface of the cap.

In some embodiments, the lid member is a metal member and the seal member is a plastic member.

In some embodiments, the surfaces of the top cover piece, the pole post and the explosion-proof piece are provided with nanoscale oxide films, and the nanoscale oxide films can form bonding surfaces with the sealing piece so as to bond the top cover piece, the pole post and the explosion-proof piece in the sealing piece.

A power battery comprises the power battery cover plate.

The utility model discloses a power battery apron's beneficial effect does: the lightening holes on the top cover part can reduce the self weight of the top cover part. The cooperation of installation arch and mounting groove can make sealing member and top cap piece steady connection, strengthens the mechanical strength of power battery apron in vertical direction, strengthens the life of power battery apron and guarantees the leakproofness. The sealing member is buckled on the mounting groove and can increase the internal space of the power battery connected with the power battery cover plate, so that the energy density of the battery is improved.

The utility model discloses a power battery's beneficial effect does: due to the power battery cover plate, the manufacturing cost of the power battery is reduced, the internal space of the power battery is enlarged, and the energy density of the power battery is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic perspective view of a power battery cover plate according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a power battery cover plate according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic view of an internal structure of a power battery cover plate according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a pole according to an embodiment of the present invention.

Reference numerals:

1. a roof member; 11. lightening holes; 12. mounting grooves; 2. a seal member; 21. mounting a boss; 22. a mating hole; 23. mounting holes; 231. a groove; 3. a pole column; 31. a mating groove; 4. an explosion-proof piece.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The specific structure of the power battery cover plate according to the embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1-5, the power battery cover plate of the embodiment of the present invention includes a cap member 1, a sealing member 2, and a pole 3. The roof member 1 is provided with lightening holes 11 and mounting grooves 12 arranged around the lightening holes 11. The packing 2 is provided with a mounting projection 21 provided corresponding to the mounting groove 12, and the packing 2 is configured to cover the lightening hole 11. Utmost point post 3 is two, and two utmost point posts 3 all wear to establish in sealing member 2.

It can be understood that the lightening holes 11 on the top cover member 1 can effectively reduce the dead weight of the top cover member 1, thereby simplifying the top cover plate body and reducing the weight of the power battery cover plate, and the sealing member 2 can cover the lightening holes 11, so that the power battery cover plate can reduce the dead weight while still maintaining good sealing performance. Be equipped with the mounting groove 12 that encircles lightening hole 11 and set up on top cover 1, be equipped with the installation arch 21 that corresponds the setting with mounting groove 12 on sealing member 2, cooperation through installation arch 21 and mounting groove 12 can strengthen the joint strength between sealing member 2 and top cover 1, and be equipped with the binder on the inner wall of mounting groove 12 with the joint strength of reinforcing sealing member 2 and top cover 1, therefore above-mentioned setting enables sealing member 2 and top cover 1 and stabilizes and is connected to can strengthen the mechanical strength of power battery apron in vertical direction, strengthen the life of power battery apron. In addition, the sealing element 2 is buckled on the mounting groove 12, so that the internal space of the battery connected with the power battery cover plate can be enlarged, and the energy density of the battery is improved. In addition, the sealing element 2 is connected with the top cover element 1 in an injection molding mode, the pole 3 penetrates through the sealing element 2 in the process, and the injection molding enables the top cover element 1, the sealing element 2 and the pole 3 to be matched without complex procedures, so that the manufacturing process of the power battery cover plate is simplified, and the manufacturing cost of the power battery cover plate is reduced.

In some embodiments, as shown in fig. 4, the mounting protrusion 21 is disposed along the periphery of the sealing member 2, and the sealing member 2 and the mounting protrusion 21 are an integral injection molded part. It can be understood that the installation protrusion 21 provided along the periphery of the sealing member 2 can enable the sealing member 2 to be completely buckled on the installation groove 12 without other redundant areas beyond the range defined by the installation groove 12, thereby maintaining the beauty of the power battery cover plate and the lightweight performance of the power battery cover plate. Further, providing the seal member 2 and the mounting projection 21 as an integral injection-molded article can further improve the sealing effect of the seal member 2 against the lid member 1.

In some embodiments, there are two mounting slots 12 spaced apart, and one sealing member 2 is snap fit into each mounting slot 12.

It will be appreciated that the spaced mounting slots 12 enable the frame of the roof member 1 to define an area to which external components can be connected and to define two small frame structures. The sealing elements 2 are respectively buckled on the mounting grooves 12 of the two small frames, so that the strength of the power battery cover plate can be improved, the sealing elements 2 are not easy to bend in the long-term use process, and the service life of the power battery cover plate is prolonged. Preferably, the two mounting grooves 12 and the sealing member 2 fastened to the mounting grooves 12 are rectangular, which can facilitate the processing of the power battery.

In some embodiments, as shown in fig. 2 and 5, the sealing member 2 is provided with at least two fitting holes 22, each fitting hole 22 is fitted with one pole 3 therein, and the outer peripheral surface of each pole 3 is formed with a fitting groove 31, and the sealing member 2 is inserted into the fitting groove 31. It will be appreciated that providing the adhesive on the pole 3 and inserting the sealing member 2 in the fitting groove 31 enables the pole 3 to be firmly coupled to the sealing member 2. In addition, the pole 3 is not connected to the sealing element 2 in riveting or welding modes, so that the manufacturing process of the power battery cover plate can be optimized and more stable, and the production efficiency of the power battery cover plate is improved.

In some embodiments, as shown in fig. 1, 2 and 4, the power battery cover plate further comprises an explosion-proof piece 4, and the explosion-proof piece 4 is embedded in the sealing member 2.

It can be understood that when the internal pressure of the power battery is greater than the pressure that the explosion-proof piece 4 can bear, the explosion-proof piece 4 can crack and discharge the high-temperature high-pressure gas in the power battery, and the explosion-proof piece 4 is embedded in the sealing element 2, so that the sealing effect on the cover plate of the power battery and the protection effect on the power battery can be achieved.

In some embodiments, as shown in fig. 2 and 4, the sealing member 2 is provided with a mounting hole 23, a groove 231 is formed on the inner wall of the mounting hole 23, and the explosion-proof member 4 is inserted into the groove 231. It can be understood that the explosion-proof piece 4 is inserted into the groove 231 on the inner wall of the mounting hole 23, and the explosion-proof piece 5 is connected with the sealing piece 2 when the sealing piece 2 is connected with the top cover piece 1 by injection molding, so that methods such as welding seams and the like can be avoided, the light weight of the power battery cover plate is kept, the manufacturing process of the power battery cover plate is improved, the space inside the power battery is increased, and the energy density of the power battery is improved.

In some embodiments, as shown in fig. 4, the top cover member 1 is disposed flush with the upper surface of the sealing member 2, and the upper surface of the pole 3 is higher than the upper surface of the top cover member 1.

It can be understood that after the top cover piece 1 and the sealing piece 2 are arranged in a flush mode, the manufacturing consumables of the power battery cover plate can be reduced, so that the weight of the power battery cover plate is reduced, and the appearance of the power battery is beautified. The upper surface of the pole 3 is higher than that of the top cover part 1, so that the practical use of the power battery is facilitated, and the top cover part 1 cannot be damaged in the using process.

In some embodiments, the top cover member 1 is a metal member, and the sealing member 2 is a plastic member.

It can be understood that the top cover member 1 is a frame-type metal member, and the metal member makes the power battery cover plate have a stable and firm frame, so as to improve the stability of the power battery cover plate. The plastic part has the advantages of high strength, good waterproof performance, high temperature resistance, good sealing performance, easiness in forming and the like, and the sealing element 2 is the plastic part, so that the manufacturing process of the power battery cover plate can be simplified, and the manufacturing cost of the power battery cover plate can be reduced. In addition, the metal piece and the plastic piece are matched, so that the weight of the power battery cover plate can be further reduced, and the manufacturing cost is reduced.

In some embodiments, the surfaces of the top cover member 1, the pole 3 and the explosion-proof member 4 are all provided with nano-scale oxide films, and the nano-scale oxide films can form a bonding surface with the sealing member 2 so as to bond the top cover member 1, the pole 3 and the explosion-proof member 4 in the sealing member. It can be understood that, when sealing member 2 is the plastic part, the plastic part is under the high temperature high pressure condition of moulding plastics with top cap spare 1, utmost point post 3 and explosion-proof component 4 are connected, the plastic part can form the bonding surface with nanometer oxidation film, and this bonding surface has extremely strong sealing performance and cohesive force, thereby make sealing member 2 can make top cap spare 1 at the in-process of moulding plastics, utmost point post 3 and explosion-proof component 4 homoenergetic combine closely as an organic whole with sealing member 2, and then the sealing performance of power battery apron has been improved, the manufacturing process of power battery apron has been optimized.

The utility model discloses power battery apron includes power battery apron, and power battery apron is foreland power battery apron. According to the utility model discloses power battery, owing to have the aforesaid power battery apron, can reduce power battery's manufacturing cost, increase power battery's inner space improves power battery's energy density.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A power battery cover plate, comprising:

the roof cover comprises a roof cover part (1), wherein a lightening hole (11) and a mounting groove (12) arranged around the lightening hole (11) are formed in the roof cover part (1);

a sealing element (2), wherein a mounting protrusion (21) corresponding to the mounting groove (12) is arranged on the sealing element (2), and the sealing element (2) is configured to cover the lightening hole (11);

the pole column (3), the number of the pole columns (3) is two, and the two pole columns (3) are all arranged in the sealing element (2) in a penetrating mode.

2. The power cell cover plate according to claim 1, wherein the mounting protrusion (21) is disposed along a periphery of the sealing member (2), and the sealing member (2) and the mounting protrusion (21) are an integral injection molding.

3. The cover plate of power battery according to claim 1, characterized in that the mounting grooves (12) are two and spaced apart, and one sealing element (2) is fastened in each mounting groove (12).

4. The power battery cover plate according to claim 1, wherein the sealing element (2) is provided with at least two fitting holes (22), each fitting hole (22) is internally fitted with one of the poles (3), a fitting groove (31) is formed on the outer peripheral surface of each pole (3), and the sealing element (2) is inserted into the fitting groove (31).

5. The power cell cover plate according to claim 1, further comprising an explosion-proof member (4), wherein the explosion-proof member (4) is embedded in the sealing member (2).

6. The cover plate of power battery as claimed in claim 5, wherein the sealing element (2) is provided with a mounting hole (23), a groove (231) is formed on the inner wall of the mounting hole (23), and the explosion-proof piece (4) is inserted into the groove (231).

7. The power cell cover plate according to claim 1, wherein the cap member (1) is arranged flush with the upper surface of the sealing member (2), and the upper surface of the pole (3) is higher than the upper surface of the cap member (1).

8. The power cell cover plate according to claim 1, wherein the top cover member (1) is a metal member and the sealing member (2) is a plastic member.

9. The power battery cover plate according to claim 5, wherein the surfaces of the top cover piece (1), the pole post (3) and the explosion-proof piece (4) are provided with nanoscale oxide films, and the nanoscale oxide films form bonding surfaces with the sealing piece (2) so as to bond the top cover piece (1), the pole post (3) and the explosion-proof piece (4) in the sealing piece (2).

10. A power battery comprising the power battery cover plate of any one of claims 1-9.