CN219017825U

CN219017825U - Lithium battery shell

Info

Publication number: CN219017825U
Application number: CN202223565014.7U
Authority: CN
Inventors: 潘倩倩
Original assignee: Zhongke Huakun Beijing Technology Co ltd
Current assignee: Zhongke Huakun Beijing Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-12
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a lithium battery shell, which comprises a lower shell and an upper shell, wherein the lower shell and the upper shell form a battery shell for placing a lithium battery; go up casing bottom fixedly connected with linking frame, linking frame bottom with lower casing top butt, on the linking frame with lower casing top is equidistant along circumference respectively to have seted up a plurality of first screw holes and a plurality of second screw holes, a plurality of first screw holes and a plurality of second screw hole one-to-one, first screw hole with second screw hole all is provided with the bolt, be provided with seal assembly on the last casing, first screw hole with the bolt all with seal assembly corresponds the setting. The utility model avoids the rust and the locking caused by long-time exposure of the bolt in the air, ensures the convenience of disassembling the bolt in the later period, reduces the labor capacity of maintenance personnel, prolongs the service life of the whole shell and saves the cost.

Description

Lithium battery shell

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery shell.

Background

Lithium batteries are batteries that contain lithium in an electrochemical system, and can be broadly divided into lithium metal batteries and lithium ion batteries. Lithium batteries are widely used in various fields, and the lithium batteries are usually required to be placed in a battery case when in use, and the battery case plays a certain role in protecting the lithium batteries.

The battery case among the prior art installs through the bolt more, seals the battery in the battery case, for example the lithium cell casing that uses such as electric bicycle, electric automobile, need dismantle the battery case when later stage carries out battery replacement, but through bolted connection's battery case, because the bolt exposes in the air for a long time after long time using, the bolt easily causes rust card dead state, increases maintenance personal's the amount of labour when later stage dismantles, still easily leads to the battery casing to damage to unable guarantee battery case's life has increased the cost.

Accordingly, there is a need for a lithium battery case for solving the above-described problems.

Disclosure of Invention

The utility model aims to provide a lithium battery shell which solves the problems in the prior art.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a lithium battery shell, which comprises a lower shell and an upper shell, wherein the lower shell and the upper shell form a battery shell for placing a lithium battery;

go up casing bottom fixedly connected with linking frame, linking frame bottom with lower casing top butt, on the linking frame with lower casing top is equidistant along circumference respectively to have seted up a plurality of first screw holes and a plurality of second screw holes, a plurality of first screw holes and a plurality of second screw hole one-to-one, first screw hole with second screw hole all is provided with the bolt, be provided with seal assembly on the last casing, first screw hole with the bolt all with seal assembly corresponds the setting.

Preferably, the sealing assembly comprises a sealing frame sleeved on the outer side wall of the upper shell, the outer side wall of the sealing frame and the outer side wall of the connecting frame are located in the same vertical plane, support rods are fixedly connected to four corners of the top end of the connecting frame, grooves are formed in four corners of the bottom end of the sealing frame, the support rods are in sliding connection with the grooves, a plurality of limiting pieces are arranged on the inner side wall of the sealing frame at equal intervals along the circumferential direction, and the limiting pieces are correspondingly arranged on the top end of the upper shell.

Preferably, one end of the spring is fixedly connected to the top end of the supporting rod, and the other end of the spring is fixedly connected with the inner wall of the groove.

Preferably, a plurality of standing grooves are formed in the inner side wall of the sealing frame at equal intervals along the circumferential direction, the limiting piece comprises a limiting rod, one end of the limiting rod is hinged to the top end inside the standing groove, the limiting rod is matched with the standing groove, and the limiting rod is in butt joint with the top end of the upper shell.

Preferably, a torsion spring is arranged between the limiting rod and the placing groove, and two ends of the torsion spring are respectively fixedly connected with the limiting rod and the inner wall of the placing groove.

Preferably, a plurality of placement holes are formed in the bottom end of the sealing frame at equal intervals along the circumferential direction, the placement holes are arranged corresponding to the bolts, and the top ends of the bolts are located in the placement holes.

Preferably, rubber sealing rings are arranged between the connecting frame and the lower shell and between the connecting frame and the sealing frame, and the two rubber sealing rings are respectively and fixedly connected to the bottom end of the connecting frame and the bottom end of the sealing frame.

Preferably, the lower shell is a BFRP lower shell, and the upper shell is a BFRP upper shell.

The utility model discloses the following technical effects:

according to the lithium battery shell, the sealing assembly is arranged to realize sealing treatment of the bolts, so that the bolts are prevented from being rusted and blocked due to long-time exposure of the bolts in the air, the bolts are convenient to detach in the later period, the labor capacity of maintenance personnel is reduced, the damage to the shell is avoided, the service life of the whole shell is prolonged, and the cost is saved.

Drawings

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

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a schematic diagram of the overall splice state of the present utility model;

FIG. 3 is a schematic view showing a lifting state of a seal frame according to the present utility model;

FIG. 4 is a schematic view of a seal frame in a limited position according to the present utility model;

FIG. 5 is a schematic view of a placement hole structure according to the present utility model;

wherein, 1, lower shell; 2. an upper housing; 3. a connection frame; 4. a first threaded hole; 5. a second threaded hole; 6. a bolt; 7. a sealing frame; 8. a support rod; 9. a groove; 10. a spring; 11. a placement groove; 12. a limit rod; 13. a torsion spring; 14. placing the hole; 15. and a rubber sealing ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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 order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1 to 5, the present utility model provides a lithium battery case, comprising a lower case 1 and an upper case 2, the lower case 1 and the upper case 2 constituting a battery case for accommodating a lithium battery;

go up casing 2 bottom fixedly connected with connecting frame 3, connecting frame 3 bottom and lower casing 1 top butt, on the connecting frame 3 with lower casing 1 top along circumference equidistant a plurality of first screw holes 4 and a plurality of second screw holes 5 of having seted up respectively, a plurality of first screw holes 4 and a plurality of second screw holes 5 one-to-one, first screw hole 4 and second screw holes 5 in all are provided with bolt 6, are provided with seal assembly on the last casing 2, and first screw hole 4 and bolt 6 all correspond the setting with seal assembly.

Further optimizing scheme, seal assembly is including the cover setting up the sealing frame 7 on last casing 2 lateral wall, and sealing frame 7 lateral wall is located same vertical face with connecting frame 3 lateral wall, all fixedly connected with bracing piece 8 on the four corners of connecting frame 3 top, all set up flutedly 9 on the four corners of sealing frame 7 bottom, bracing piece 8 and fluting 9 sliding connection, are provided with a plurality of locating parts along circumference equidistant on the sealing frame 7 inside wall, and the locating part corresponds the setting with last casing 2 top.

The top of the outer side wall of the specific support rod 8 is fixedly connected with a limit sliding block (not shown in the figure), a limit sliding groove (not shown in the figure) is formed in the inner side wall of the groove 9, the limit sliding block is slidably connected in the limit sliding groove, when the seal frame 7 is manually lifted to a certain height, the limit sliding block is abutted against the inner wall of the limit sliding groove, the separation of the groove 9 and the support rod 8 is avoided, the seal frame 7 manually lifted is in limit clamping connection with the top end of the upper shell 2 through a limit piece, and a gap exists between the first threaded hole 4 and the bottom end of the seal frame 7, so that the bolt 6 is convenient to install and detach.

Further optimizing scheme, the one end of bracing piece 8 top fixedly connected with spring 10, spring 10 other end and recess 9 inner wall fixed connection.

The elastic force generated by the spring 10 drives the sealing frame 7 to be stably buckled with the connecting frame 3.

Further optimizing scheme, a plurality of standing grooves 11 have been offered along equidistant circumference on the sealing frame 7 inside wall, and the locating part includes that one end articulates the gag lever post 12 on the inside top of standing groove 11, gag lever post 12 and standing groove 11 looks adaptation, and gag lever post 12 and last casing 2 top butt.

According to a further optimization scheme, a torsion spring 13 is arranged between the limiting rod 12 and the placing groove 11, and two ends of the torsion spring 13 are fixedly connected with the limiting rod 12 and the inner wall of the placing groove 11 respectively.

When the sealing frame 7 is manually lifted, the placing groove 11 on the sealing frame 7 is separated from the top end of the upper shell 2, and the torsion spring 13 can drive the limiting rod 12 to automatically pop out from the placing groove 11.

Further optimizing scheme, a plurality of placing holes 14 are formed in the bottom end of the sealing frame 7 at equal intervals along the circumferential direction, the placing holes 14 are arranged corresponding to the bolts 6, and the top ends of the bolts 6 are located in the placing holes 14.

The bolt 6 is located the connecting frame 3 after the threaded connection of the bolt 6, and after sealing frame 7 and the connecting frame 3 butt, the bolt 6 top is located and places the hole 14, has guaranteed sealing frame 7 and the inseparable laminating of connecting frame 3 to the leakproofness of bolt 6 has been guaranteed.

Further optimizing scheme, all be provided with rubber seal 15 between connecting frame 3 and the lower casing 1 and between connecting frame 3 and the sealing frame 7, two rubber seal 15 fixed connection respectively are in connecting frame 3 bottom and sealing frame 7 bottom.

The rubber sealing ring 15 ensures the tightness of the connecting frame 3 and the lower shell 1 after being buckled and the tightness between the sealing frame 7 and the connecting frame 3, thereby further avoiding the long-time contact of the bolts 6 with air and rust.

In a further optimized scheme, the lower shell 1 is a BFRP lower shell, and the upper shell 2 is a BFRP upper shell.

The BFRP material has the advantages of low density, good dielectric insulation performance, good heat insulation performance, water absorption, thermal expansion performance, good electric insulation performance, good thermal performance, high temperature resistance, corrosion resistance, aging resistance and the like, and further ensures the service life of the battery shell.

The utility model provides a lithium battery shell, when in use, a lithium battery is placed in a lower shell 1, an upper shell 2 is buckled to enable a plurality of first threaded holes 4 and a plurality of second threaded holes 5 to be in one-to-one correspondence, a sealing frame 7 is lifted by hand, when the top end of the upper shell 2 of a placing groove 11 is separated, a torsion spring 13 drives a limiting rod 12 to pop out of the placing groove 11, after the sealing frame 7 is loosened, the sealing frame 7 is lowered by the elasticity of a spring 10, the limiting rod 12 is abutted with the top end of the upper shell 2, the clamping and limiting of the sealing frame 7 are realized, at the moment, a bolt 6 is in threaded connection with the first threaded holes 4 and the second threaded holes 5, after the installation of the bolt 6 is completed, the sealing frame 7 is manually pushed and pulled down, the hinged limiting rod 12 is manually pushed and retracted into the placing groove 11, the sealing frame 7 is downwards retracted under the action of the spring 10, the placing hole 14 is buckled above the bolt 6, a rubber sealing ring 15 is abutted with the top end of the lower shell 1, the waterproof sealing of the bolt 6 is realized, long-time exposure to the air is avoided, and smooth disassembly of the bolt 6 in the later stage is ensured.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The lithium battery shell is characterized by comprising a lower shell (1) and an upper shell (2), wherein the lower shell (1) and the upper shell (2) form a battery shell for placing a lithium battery;

go up casing (2) bottom fixedly connected with connecting frame (3), connecting frame (3) bottom with casing (1) top butt down, on connecting frame (3) with casing (1) top down has been seted up a plurality of first screw holes (4) and a plurality of second screw holes (5) along circumference equidistant respectively, and is a plurality of first screw holes (4) and a plurality of second screw holes (5) one-to-one, first screw hole (4) with all be provided with bolt (6) in second screw hole (5), be provided with seal assembly on going up casing (2), first screw hole (4) with bolt (6) all with seal assembly corresponds the setting.

2. A lithium battery cell as defined in claim 1, wherein: seal assembly establishes including the cover sealing frame (7) on last casing (2) lateral wall, sealing frame (7) lateral wall with connecting frame (3) lateral wall is located same vertical face, all fixedly connected with bracing piece (8) on connecting frame (3) top four corners, all set up on sealing frame (7) bottom four corners recess (9), bracing piece (8) with recess (9) sliding connection, equidistant a plurality of locating parts of being provided with along circumference on sealing frame (7) inside wall, the locating part with go up casing (2) top and correspond the setting.

3. A lithium battery cell casing as defined in claim 2, wherein: one end of a spring (10) is fixedly connected to the top end of the supporting rod (8), and the other end of the spring (10) is fixedly connected with the inner wall of the groove (9).

4. A lithium battery cell casing as defined in claim 2, wherein: a plurality of standing grooves (11) are formed in the inner side wall of the sealing frame (7) at equal intervals along the circumferential direction, the limiting piece comprises a limiting rod (12) with one end hinged to the top end inside the standing groove (11), the limiting rod (12) is matched with the standing groove (11), and the limiting rod (12) is in butt joint with the top end of the upper shell (2).

5. The lithium battery cell pack of claim 4, wherein: a torsion spring (13) is arranged between the limiting rod (12) and the placing groove (11), and two ends of the torsion spring (13) are fixedly connected with the limiting rod (12) and the inner wall of the placing groove (11) respectively.

6. A lithium battery cell casing as defined in claim 2, wherein: a plurality of placement holes (14) are formed in the bottom end of the sealing frame (7) at equal intervals along the circumferential direction, the placement holes (14) are correspondingly formed in the bolts (6), and the top ends of the bolts (6) are located in the placement holes (14).

7. A lithium battery cell casing as defined in claim 2, wherein: rubber sealing rings (15) are arranged between the connecting frame (3) and the lower shell (1) and between the connecting frame (3) and the sealing frame (7), and the two rubber sealing rings (15) are respectively and fixedly connected to the bottom end of the connecting frame (3) and the bottom end of the sealing frame (7).

8. A lithium battery cell as defined in claim 1, wherein: the lower shell (1) is a BFRP lower shell, and the upper shell (2) is a BFRP upper shell.