CN218039476U

CN218039476U - Cover plate assembly, battery and battery module

Info

Publication number: CN218039476U
Application number: CN202221657488.1U
Authority: CN
Inventors: 赵芬芬; 赵赫; 黄利明; 徐悦斌; 何巍
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-12-13
Anticipated expiration: 2032-06-28

Abstract

The utility model discloses a apron subassembly, battery and battery module relates to battery technology field. The apron subassembly is used for the battery, the battery includes electric core and the casing that is used for holding electric core, the apron subassembly includes top cap piece, sealing washer and utmost point post, the top cap piece can be covered to close to be fixed the uncovered department of casing, the sealing washer sets up in the casing and with the bottom surface laminating of top cap piece, the one end of utmost point post with electric core is connected, and the other end is worn to establish the sealing washer with the top cap piece extends to outside the casing, wherein, the edge of sealing washer can be to keeping away from when receiving the effect of extrusion force the direction extension of electric core forms the sealing, the sealing be used for with the sealing washer with the casing with space between the top cap piece is filled. The cover plate assembly is simple in structure and convenient to disassemble and assemble, can ensure the sealing property of the battery, and avoids the leakage phenomenon.

Description

Cover plate assembly, battery and battery module

Technical Field

The utility model relates to a battery technology field especially relates to an apron subassembly, battery and battery module.

Background

The battery is widely applied to life, and the traditional battery mainly comprises an electric core, a battery shell and a cover plate assembly, namely the electric core is put into the battery shell, so that the electric connection of the cover plate assembly and the electric core is realized, and the battery shell is sealed. However, the sealing performance of the cover plate assembly in the prior art is not stable enough, and the leakage phenomenon is easy to occur.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide an apron subassembly, simple structure, easy dismounting can guarantee the leakproofness of battery, avoids the appearance of weeping phenomenon.

For realizing the technical effect, the technical scheme of the utility model as follows:

a cover plate assembly for a battery including a cell and a housing for housing the cell, the cover plate assembly comprising:

the top cover plate can be fixed at the opening of the shell in a covering manner;

the sealing ring is arranged in the shell and is attached to the bottom surface of the top cover plate;

utmost point post, the one end of utmost point post with electricity core is connected, and the other end is worn to establish the sealing washer with outside the top cap piece extends to the casing, wherein:

the edge of sealing washer can be to keeping away from when receiving the effect of extrusion force the direction extension of electricity core forms sealing, sealing is used for with the sealing washer with the casing with the space between the top plate is filled.

As an alternative to the cover plate assembly, a flange is provided on the peripheral side of the top cover plate, and the seal portion is located in a space enclosed by the housing and the flange.

As an alternative to the cover plate assembly, the diameter of the sealing ring edge increases in the direction from the sealing ring bottom to the sealing portion, and the housing is provided with a matching transition.

As an alternative to the cover plate assembly, the post is riveted to the top cover plate.

As an alternative to the cover plate assembly, the pole includes a column portion and a column seat portion connected to each other, and the column seat portion is formed by riveting one end of the column portion downward to fix the top cover plate.

As an alternative of the cover plate assembly, the sealing ring is provided with a pole column accommodating hole, the sealing ring is provided with an annular boss along the edge of the pole column accommodating hole, the cover plate assembly further comprises an insulating pad, and the insulating pad can be sleeved on the annular boss and penetrates through the top cover plate.

As an alternative to the cover plate assembly, the cross-sectional area of the annular boss becomes smaller in a direction away from the battery cell.

As an alternative of the cover plate assembly, the cover plate assembly further comprises a current-collecting plate, the bottom surface of the current-collecting plate is fixed on the battery core, and the pole is arranged on the top surface of the current-collecting plate.

A second object of the present invention is to provide a battery, which uses the above-mentioned cover plate assembly to ensure the sealing performance of the battery and avoid the occurrence of leakage.

For realizing the above technical effect, the technical scheme of the utility model as follows:

a battery comprises a battery core, a shell and the cover plate assembly, wherein the shell is used for accommodating the battery core, and the cover plate assembly is respectively connected with the battery core and the shell.

A third object of the utility model is to provide a battery module, its sealed nature that uses foretell battery can guarantee the battery avoids the appearance of weeping phenomenon.

a battery module comprises a plurality of batteries as described above, and the plurality of batteries are arranged in a plurality of rows and a plurality of columns.

The utility model has the advantages that: the utility model provides an apron subassembly, battery and battery module in assembling process, because the sealing washer receives the extrusion of casing and top cap piece to the space between sealing washer and casing and the top cap piece can be filled to the sealing portion that extends messenger's formation under the elastic action of self, thereby has guaranteed sealed effect, avoids appearing the possibility of weeping, has ensured the security and the performance of battery. The cover plate assembly is simple in structure and convenient to disassemble and assemble, can ensure the sealing property of the battery, and avoids the leakage phenomenon.

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 structural diagram of a cover plate assembly according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a battery according to an embodiment of the present invention.

Reference numerals:

1. a cover plate assembly; 11. a top cover sheet; 111. a flange; 12. a seal ring; 121. a sealing part; 122. an annular boss; 13. a pole column; 131. a cylindrical portion; 132. a post seat portion; 14. an insulating pad; 15. a confluence disc; 151. positioning holes;

2. a housing.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

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; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by 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 "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply 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.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning. Wherein the terms "first position" and "second position" are two different positions.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the present embodiment provides a battery module, which includes a plurality of batteries arranged in a plurality of rows and a plurality of columns, so as to satisfy the electric quantity required by the user. The battery comprises a battery cell, a shell 2 and a cover plate assembly 1, wherein the shell 2 is used for accommodating the battery cell, and the cover plate assembly 1 is respectively connected with the battery cell and the shell 2.

Specifically, apron subassembly 1 includes top cap piece 11, sealing washer 12 and utmost point post 13, and top cap piece 11 can be covered and close and fix in casing 2 opening department, and sealing washer 12 sets up in casing 2 and laminates with top cap piece 11's bottom surface, and utmost point post 13's one end is connected with electric core, and the other end wears to establish sealing washer 12 and top cap piece 11 and extends to outside casing 2, wherein: when the edge of the sealing ring 12 is subjected to the pressing force, the edge extends in the direction away from the battery core to form a sealing part 121, and the sealing part 121 is used for filling the gap between the sealing ring 12 and the housing 2 and the top cover plate 11. Illustratively, the sealing ring 12 is made of a rubber material, which has a good elastic deformation capability.

It can be understood that, during the assembly process, the sealing ring 12 is pressed by the housing 2 and the top cover 11 and extends under the elastic action of itself, so that the formed sealing part 121 can fill the gap between the sealing ring 12 and the housing 2 and the top cover 11, thereby ensuring the sealing effect, avoiding the possibility of leakage, and ensuring the safety and the service performance of the battery. The cover plate assembly 1 is simple in structure and convenient to disassemble and assemble, can ensure the sealing property of a battery, and avoids the leakage phenomenon.

Specifically, the peripheral side of the top cover sheet 11 is provided with a flange 111, and the sealing part 121 is located in the space enclosed by the housing 2 and the flange 111, that is, the edge of the sealing ring 12 is pressed by the space enclosed by the flange 111 and the housing 2 to form the sealing part 121, so as to ensure the sealing performance of the battery.

Further, the diameter of the edge of the sealing ring 12 in the direction from the bottom of the sealing ring 12 to the sealing portion 121 is gradually increased, and a matching gradual change section is provided on the housing 2. That is, the sealing function of the sealing ring 121 can be more compact by the invasion and extrusion between the change section formed by the sealing ring 12 and the gradual change section of the casing, and the leakage phenomenon is avoided.

Wherein, in order to realize that utmost point post 13 and electric core are connected, apron subassembly 1 still includes the dish 15 that converges, and the bottom surface of the dish 15 that converges is fixed on electric core, and utmost point post 13 sets up on the top surface of the dish 15 that converges. Converge the bottom surface and the electric core welding of dish 15 promptly, utmost point post 13 one end welding is on converging the top surface of dish 15 to guarantee the steadiness of connecting between the three.

Further, the confluence disc 15 is provided with a positioning hole 151 so that the pole 13 can be accurately welded on the confluence disc 15.

Wherein, seted up utmost point post and held the hole on the sealing washer 12, sealing washer 12 is provided with annular boss 122 along the edge in utmost point post appearance hole, and apron subassembly 1 still includes insulating pad 14, and insulating pad 14 can overlap and establish on annular boss 122 and wear to locate top plate 11. Namely, the insulating performance of the entire battery can be ensured and the entire sealing performance can be further improved by providing the insulating gasket 14. Illustratively, the insulating pad 14 is made of a plastic material, which has good insulating properties. In addition, the annular boss 122 is arranged, so that a certain supporting effect on the pole 13 can be achieved.

Optionally, the sectional area of annular boss 122 diminishes gradually along the direction of keeping away from electric core to the removal of utmost point post 13 along the axis direction has carried out the restraint, and not only easy to assemble utmost point post 13 can also avoid utmost point post 13 to remove along the direction of keeping away from electric core, thereby has guaranteed the stability of connecting between sealing washer 12 and the utmost point post 13.

In this embodiment, utmost point post 13 and top cap piece 11 riveting, through the riveting technology promptly can not only improve the production efficiency of battery, reduction in production cost can also guarantee interference fit between utmost point post 13 and the sealing washer 12 and interference fit between sealing washer 12 and the top cap piece 11, avoid electrolyte to leak away from first utmost point post 13 holding hole.

Further, the pole post 13 includes a column portion 131 and a column seat portion 132 connected to each other, and the column seat portion 132 is formed by riveting one end of the column portion 131 downward to fix the top cover sheet 11. That is, during installation, one end of the cylindrical portion 131 needs to be pulled up to pass through the sealing ring 12 and the insulating pad 14 in sequence, and then the one end of the cylindrical portion 131 is riveted to form the pillar portion 132, so that the electrolyte does not flow out along the outer side of the cylindrical portion 131, and the sealing performance of the battery is improved. It is to be understood that the outer shapes of the column part 131 and the column seat part 132 are not limited to the circular, triangular, square, polygonal and irregular shapes as long as the sealability of the battery is ensured.

In the description herein, references to the description of "some embodiments," "other embodiments," or the like, 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 purpose of illustrating the preferred embodiments of the present invention, and it is to be understood that the present invention is not limited to the above embodiments, but may be modified within the scope of the present invention.

Claims

1. A cover plate assembly for a battery comprising a cell and a housing (2) for housing the cell, comprising:

the top cover sheet (11), the said top cover sheet (11) can cover and fix in the opening of the said body (2);

the sealing ring (12) is arranged in the shell (2) and is attached to the bottom surface of the top cover plate (11);

utmost point post (13), the one end of utmost point post (13) with the electricity core is connected, and the other end is worn to establish sealing washer (12) with top cap piece (11) and extend to outside casing (2), wherein:

the edge of the sealing ring (12) can extend in the direction away from the battery core to form a sealing part (121) when the edge is subjected to extrusion force, and the sealing part (121) is used for filling the gap between the sealing ring (12) and the shell (2) and the top cover plate (11).

2. The cover plate assembly according to claim 1, wherein a flange (111) is provided on a peripheral side of the top cover sheet (11), and the seal portion (121) is located in a space enclosed by the housing (2) and the flange (111).

3. Cover plate assembly according to claim 1 or 2, characterized in that the edge of the sealing ring (12) has a diameter which increases in the direction from the bottom of the sealing ring (12) to the sealing portion (121), and that the housing (2) is provided with a matching transition.

4. The lid assembly according to claim 1 or 2, characterized in that the pole (13) is riveted to the top cover sheet (11).

5. The cover plate assembly according to claim 4, wherein the pole (13) comprises a column portion (131) and a column seat portion (132) connected, and the column seat portion (132) is formed by riveting one end of the column portion (131) downwards to fix the top cover sheet (11).

6. The cover plate assembly according to claim 1 or 2, wherein the seal ring (12) is provided with a pole receiving hole, the seal ring (12) is provided with an annular boss (122) along an edge of the pole receiving hole, the cover plate assembly further comprises an insulating pad (14), and the insulating pad (14) can be sleeved on the annular boss (122) and is arranged on the top cover plate (11) in a penetrating manner.

7. The cover plate assembly of claim 6, wherein the cross-sectional area of the annular boss (122) tapers in a direction away from the cell.

8. The cover plate assembly according to claim 1 or 2, further comprising a bus bar (15), wherein the bottom surface of the bus bar (15) is fixed on the cell, and the pole (13) is arranged on the top surface of the bus bar (15).

9. A battery, characterized in that it comprises a core, a casing (2) for accommodating said core, and a cover plate assembly according to any one of claims 1 to 8, which is connected to said core and to said casing (2), respectively.

10. A battery module comprising a plurality of the batteries according to claim 9, wherein the plurality of the batteries are arranged in a plurality of rows and a plurality of columns.