CN217641564U

CN217641564U - Cover plate structure and lithium battery

Info

Publication number: CN217641564U
Application number: CN202221215068.8U
Authority: CN
Inventors: 贺智祺; 李海军; 李聪利
Original assignee: Gree Altairnano New Energy Inc
Current assignee: Gree Altairnano New Energy Inc
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-10-21
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses an apron structure, this apron structure include the base plate, have seted up first through-hole on the base plate, and I shape sealing washer is installed to first through-hole department, and utmost point post passes the sealing washer, utmost point post one end and sealing washer one side butt, and the other end is riveted with the another side of sealing washer to make utmost point post, base plate and sealing washer fixed connection, still disclose a lithium cell, include as above-mentioned apron structure. The utility model provides a pair of apron structure and lithium cell has increased the frictional force between sealing washer and the utmost point post, has improved sealed effect, and utmost point post adopts the riveting form to fix on the base plate simultaneously, has improved the frictional force between utmost point post and the sealing washer, and simple structure has guaranteed the stability of connecting.

Description

Cover plate structure and lithium battery

Technical Field

The utility model belongs to the technical field of battery equipment, especially, relate to an apron structure and lithium cell.

Background

At present, the new energy industry is rapidly developed, the occupancy of new energy automobiles is gradually increased, and the demand of new energy power batteries is increased accordingly. Most of the existing lithium battery pole column structures in the market adopt a structure of a simple cover plate, the pole column is fixed by encapsulation, the encapsulation aging can be caused along with the increase of the service time or the change of the service environment temperature in the use process of the battery, so that the pole column is loosened or separated, the service life of the battery is influenced,

therefore, it is needed to design a cover plate structure and a lithium battery to solve the above-mentioned problems of battery life affected by the looseness or separation of the encapsulated terminal caused by the aging of the encapsulated terminal.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems that the encapsulation fixes the pole and the service life of the battery is influenced by the looseness or the separation of the pole caused by the aging of the encapsulation, a cover plate structure and a lithium battery are provided to solve the problems.

In order to achieve the above object, the utility model discloses a concrete technical scheme of apron structure and lithium cell as follows:

a cover plate structure comprises a base plate, wherein a first through hole is formed in the base plate, an I-shaped sealing ring is installed at the first through hole, an electrode post penetrates through the sealing ring, one end of the electrode post is abutted to one surface of the sealing ring, and the other end of the electrode post is riveted with the other surface of the sealing ring, so that the electrode post, the base plate and the sealing ring are fixedly connected.

Further, utmost point post includes utmost point post body and kink, and the kink sets up perpendicularly on utmost point post body, and utmost point post body and the one side butt of sealing washer, the kink passes the sealing washer riveting in the another side of sealing washer.

Further, still include the plastic, go up the plastic lock on utmost point post body for fix utmost point post body on the base plate once more.

Furthermore, a mounting hole is formed in the substrate, a first bump is arranged on the upper plastic, and the first bump is inserted into the mounting hole so that the upper plastic is fixed on the substrate.

Further, be provided with the boss on the utmost point post body, go up to be provided with the recess on the plastic, recess and boss cooperation go up the plastic lock on utmost point post.

Further, be provided with the breach on the utmost point post body, go up and be provided with the arch in the plastic, protruding and breach cooperation to the relative rotation of restriction utmost point post body and base plate is used for improving utmost point post twisting resistance.

Furthermore, the plastic packaging structure also comprises lower plastic, wherein the lower plastic is arranged on one surface of the substrate far away from the upper plastic, and the lower plastic is spliced with the substrate.

Furthermore, a second convex block is arranged on the lower plastic, a mounting groove is arranged on the substrate, and the second convex block is spliced with the mounting groove so as to fix the lower plastic and the substrate.

Furthermore, a second through hole is formed in the lower plastic, a limiting protrusion is arranged on the edge of the second through hole, the lower plastic is matched with the substrate, the limiting protrusion is abutted against the bending part, and the bending part is separated from the substrate by the limiting protrusion.

A lithium battery comprising a cover plate structure as described above.

The utility model discloses an apron structure and lithium cell have following advantage:

install the I-shaped sealing washer through the first through-hole department at the base plate, set up the I-shaped sealing washer, can make the through-hole about the two sides all have sealedly, pass the sealing washer at utmost point post, utmost point post one end and sealing washer one side butt, the other end is riveted with the another side of sealing washer, the riveting in-process, utmost point post all extrudees the sealing washer both sides and seals, compare in prior art and only seal on one side of first through-hole, the frictional force between sealing washer and the utmost point post has been increased, sealing effect has been improved, utmost point post adopts the riveting form to fix on the base plate simultaneously, utmost point post is difficult for becoming flexible or deviating from on the base plate, moreover, the steam generator is simple in structure, the stability of connection has been guaranteed.

Drawings

Fig. 1 is an explosion structure diagram of the cover plate structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the cover plate structure of the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

fig. 4 is a schematic structural view of the polarity terminal of the present invention before riveting;

fig. 5 is a schematic structural view of the polarity terminal of the present invention after riveting;

fig. 6 is a schematic structural view of the plastic of the present invention.

The symbols in the figure illustrate:

1. plastic is coated; 11. a first bump; 12. a protrusion; 2. a pole column; 21. a pole body; 211. a notch; 212. a boss; 22. a bending section; 3. a seal ring; 4. a substrate; 41. a first through hole; 42. mounting holes; 5. plastic is discharged; 51. a second bump; 52. a second through hole; 53. and a limiting bulge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The following describes a cover plate structure and a lithium battery according to the present invention with reference to fig. 1 to 6.

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. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements relevant to the present invention are shown in the drawings.

As shown in fig. 1 to 3, the utility model provides an apron structure, including base plate 4, seted up first through-hole 41 on the base plate 4, first through-hole 41 department installs I shape sealing washer 3, and utmost point post 2 passes sealing

washer

3, 2 one ends of utmost point post and 3 one side butts of sealing washer, and the other end is riveted with the another side of sealing washer 3 to make utmost point post 2, base plate 4 and sealing washer 3 fixed connection.

Install I-shaped sealing washer 3 through 41 departments at the first through-hole of base plate 4, set up I-shaped sealing washer 3, both sides all have sealedly about can making the through-hole, pass sealing washer 3 at

utmost point post

2, 2 one end of utmost point post and 3 one side butts of sealing washer, the other end and the riveting of the another side of sealing washer 3, the riveting in-process, utmost point post 2 all extrudees sealedly to 3 both sides of sealing washer, only seal on one side of first through-hole in comparing in prior art, the frictional force between sealing washer 3 and utmost point post 2 has been increased, sealing effect has been improved, utmost point post 2 adopts the riveting form to fix on base plate 4 simultaneously, utmost point post 2 is difficult for becoming flexible or deviating from on base plate 4, moreover, the steam generator is simple in structure, the stability of connection has been guaranteed.

Specifically, as shown in fig. 1 to 5, the electrode post 2 includes an electrode post body 21 and a bent portion 22, the bent portion 22 is vertically disposed on the electrode post body 21, the electrode post body 21 abuts against one surface of the sealing ring 3, and the bent portion 22 penetrates through the sealing ring 3 and is riveted on the other surface of the sealing ring 3. During installation, firstly, the I-shaped sealing ring 3 is installed at the first through hole 41, because the sealing ring 3 is designed into an I-shaped structure, sealing parts are arranged on the upper surface and the lower surface of the first through hole 41, a through hole is formed in the middle of the I-shaped sealing ring 3, so that the pole 2 can pass through the through hole of the sealing ring 3, when the pole 2 is installed, the bending part 22 passes through the through hole of the sealing ring 3, the pole body 21 is abutted to the sealing ring 3 above the first through hole 41, the bending part 22 is riveted, the riveted bending part 22 is abutted to the sealing ring 3 below the first through hole 41, the pole 2, the sealing ring 3 and the substrate 4 are fixedly connected together, meanwhile, the bending part 22 is riveted, both sides of the sealing ring 3 are all extruded, compared with the prior art that the sealing ring 3 on one side is extruded, the sealing rings 3 on both sides of the first through hole 41 are all extruded, the sealing effect of the sealing ring 3 is greatly improved, meanwhile, the friction force between the pole 2 and the sealing ring 3 is improved, the structure is simple, and the connection stability is ensured.

Further, as shown in fig. 1 to 6, the cover plate structure of the present invention further includes an upper plastic 1, wherein the upper plastic 1 is fastened to the post body 21 for fixing the post body 21 to the substrate 4 again. Specifically, a mounting hole 42 is formed in the substrate 4, the upper plastic 1 is provided with first bumps 11, the first bumps 11 are inserted into the mounting hole 42, so that the upper plastic 1 is fixed on the substrate 4, the mounting hole 42 is formed in the first through hole 41 of the substrate 4, the mounting holes 42 are uniformly arranged along the circumferential direction of the first through hole 41, in this embodiment, four mounting holes 42 are formed, correspondingly, the upper plastic 1 is provided with four first bumps 11, each first bump 11 is inserted into one mounting hole 42, in other embodiments, other numbers of first bumps 11 and mounting holes 42 can be arranged according to actual conditions, and the upper plastic 1 and the substrate 4 can be mounted together.

Further, as shown in fig. 1 to 6, utmost point post 2 is together fixed through riveting and sealing washer 3, make utmost point post 2, sealing washer 3 and base plate 4 are in the same place in the stable connection, be provided with boss 212 on utmost point post body 21, it has set the recess to go up to set up on plastic 1, recess and boss 212 cooperation, make and go up 1 lock of plastic on utmost point post 2, go up plastic 1 because fixed the setting on base plate 4, consequently, the cooperation of recess and boss 212, can further restrict 2 removal along 2 axial direction of utmost point post, guarantee 2 stable fixation at base plate 4 of utmost point post, but 2 still have the rotation along 2 circumferential direction of utmost point post, utmost point post 2 is not by thorough restraint, in order further to carry out fixed restraint to utmost point post 2, be provided with breach 211 on utmost point post body 21, upward be provided with arch 12 in the plastic 1, arch 12 and breach 211 cooperation, in order to restrict 2 relative rotation of utmost point post body 21 and base plate 4, guarantee that 2 can not take place to rotate along 2's circumferential direction of utmost point post 2, be used for improving 2 antitorque ability simultaneously.

Further, as shown in fig. 1 and 6, the cover plate structure of the present invention further includes a lower plastic 5, wherein the lower plastic 5 is disposed on the substrate 4 and away from the upper plastic 1, and the lower plastic 5 is inserted into the substrate 4. Specifically, the lower plastic 5 is provided with a second bump 51, the substrate 4 is provided with a mounting groove, and the second bump 51 is inserted into the mounting groove, so that the lower plastic 5 is fixed to the substrate 4. In order to make plastic 5 and base plate connection firm down, plastic 5 both ends and intermediate position all are provided with second lug 51 under, and simultaneously, the mounting groove has been seted up in the one side of keeping away from last plastic 1 at base plate 4, the mounting groove has all been seted up to base plate 4's both sides and middle part, make the atress even between base plate 4 and the lower plastic 5, guarantee base plate 4 and the stability of plastic 5 connection down, can set up several mounting grooves more on base plate 4 according to actual need, set up several second lugs 51 more on plastic 5 down, guarantee connection stability. In other embodiments, the substrate 4 and the lower plastic 5 may be connected by a snap or other connection, so long as the substrate 4 and the lower plastic 5 are connected together.

Further, as shown in fig. 1, a second through hole 52 is formed in the lower plastic 5, the second through hole 52 is arranged to facilitate riveting of the bent portion 22, a limiting protrusion 53 is arranged at the edge of the second through hole 52, a surface of the substrate 4, which is close to the lower plastic 5, is recessed along the axis of the first through hole 41, when the lower plastic 5 is matched with the substrate 4, the limiting protrusion 53 enters the recess, the outer peripheral wall of the limiting protrusion 53 is abutted against the inner wall of the recess, when the bent portion 22 is riveted to the sealing ring 3, the inner peripheral wall of the limiting protrusion 53 is abutted against the sealing ring 3 and the riveted bent portion 22. Set up spacing protruding 53's effect, on the one hand is utmost point post 2 after the riveting, spacing protruding 53 with kink 22 and base plate 4 separation, prevent kink 22 and base plate 4 direct contact to cause the short circuit of battery, on the other hand can play the positioning action during the assembly.

The utility model also provides a lithium cell, include as above-mentioned apron structure.

The utility model provides an installation as follows of apron structure:

during installation, the lower plastic 5 is fixed on the substrate 4, the i-shaped sealing ring 3 is installed at the first through hole 41, the upper and lower surfaces of the first through hole 41 are both provided with sealing parts by the i-shaped sealing ring 3, the bent part 22 penetrates through the through hole in the sealing ring 3, the pole body 21 is abutted to the sealing ring 3 above the first through hole 41, the bent part 22 is riveted, the riveted bent part 22 is abutted to the sealing ring 3 below the first through hole 41, the pole 2 is fixedly connected with the substrate 4, meanwhile, after the lower plastic 5 is installed in advance, the limiting protrusion 53 can avoid the contact between the bent part 22 of the pole 2 and the substrate 4, finally, the first bump 11 of the upper plastic 1 is inserted into the mounting hole 42, the upper plastic 1 is connected with the substrate 4, meanwhile, the upper plastic 1 is buckled on the pole body 21, axial limiting is carried out on the pole body 21, the protrusion 12 on the pole body 21 is matched with the notch 211, the rotation of the pole body 21 in the circumferential direction is limited, the installation of the pole 2 is realized, the structure is simple, and the stability of connection is ensured.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a cover plate structure, its characterized in that includes the base plate, has seted up first through-hole on the base plate, and I-shaped sealing washer is installed to first through-hole department, and utmost point post passes the sealing washer, and utmost point post one end and sealing washer one side butt, the other end and the another side riveting of sealing washer to make utmost point post, base plate and sealing washer fixed connection.

2. The cover plate structure according to claim 1, wherein the pole comprises a pole body and a bent part, the bent part is vertically arranged on the pole body, the pole body is abutted against one surface of the sealing ring, and the bent part penetrates through the sealing ring and is riveted on the other surface of the sealing ring.

3. The cover plate structure of claim 2, further comprising an upper plastic, wherein the upper plastic is fastened to the post body for re-fixing the post body on the substrate.

4. The cover plate structure of claim 3, wherein the substrate has a mounting hole, and the upper plastic has a first protrusion inserted into the mounting hole to fix the upper plastic to the substrate.

5. The cover plate structure of claim 3, wherein the post body is provided with a boss, the upper plastic is provided with a groove, the groove is matched with the boss, and the upper plastic is buckled on the post body.

6. The cover plate structure of claim 3, wherein the post body is provided with a notch, and a protrusion is disposed in the upper plastic, and the protrusion is engaged with the notch to restrict relative rotation between the post body and the base plate, so as to improve the torque resistance of the post.

7. The cover plate structure of claim 3, further comprising a lower plastic disposed on a surface of the substrate away from the upper plastic, the lower plastic being inserted into the substrate.

8. The cover plate structure of claim 7, wherein the lower plastic has a second protrusion, the substrate has a mounting groove, and the second protrusion is inserted into the mounting groove to fix the lower plastic to the substrate.

9. The cover plate structure according to claim 7, wherein the lower plastic has a second through hole, and a limiting protrusion is disposed at an edge of the second through hole, the lower plastic is engaged with the substrate, the limiting protrusion abuts against the bending portion, and the limiting protrusion separates the bending portion from the substrate.

10. A lithium battery comprising a cover structure according to any one of claims 1 to 9.