CN215377565U

CN215377565U - Novel lithium battery shell with high safety

Info

Publication number: CN215377565U
Application number: CN202121358477.9U
Authority: CN
Inventors: 励建炬; 胡翔; 肖达安
Original assignee: Huizhou Kdl Precision Industry Co ltd
Current assignee: Huizhou Kdl Precision Industry Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-31
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to a novel lithium battery shell with high safety, which comprises a bottom plate, two L-shaped side plates and two flat side plates, wherein the two L-shaped side plates and the two flat side plates are oppositely arranged; elastic pieces are arranged between the first L-shaped block and the third L-shaped block and between the second L-shaped block and the fourth L-shaped block. The top surface of the bottom plate is perpendicular to the side surfaces of the L-shaped side plate and the flat side plate, so that an R angle at the bottom of the battery is eliminated, the internal structure of the battery is more stable, and when the laminated battery core expands, the L-shaped side plate can be pushed to move outwards, so that the internal space of the shell is increased, the laminated battery core is prevented from being subjected to severe extrusion impact, and the use safety of the battery is improved.

Description

Novel lithium battery shell with high safety

Technical Field

The utility model relates to the field of lithium battery shells, in particular to a novel lithium battery shell with high safety.

Background

The lithium ion battery has the characteristics of light weight, high energy density and the like, and is applied to various electronic products, communication equipment, automatic instruments and meters and various electric tools. Among the prior art, the lithium cell adopts laminated battery usually, laminated battery generally includes battery case and sets up the lamination electricity core in battery case, wherein, the shell generally adopts the structure of integrative punching press formula, easy production, but battery case's inside bottom can have an R angle all the time, the junction of its inside bottom surface and side is an cambered surface promptly, nevertheless the lamination electricity core does not possess the R angle, consequently, the corner of lamination electricity core can produce with the R angle of deep-drawing shell and interfere, and the lithium cell is in the use, need bear lasting vibration, the existence at R angle makes lamination electricity core and battery case bottom continuous collision easily, make the battery have the risk of short circuit explosion, and the lithium cell produces the inflation easily and extrudees the shell after long-time the use, thereby further increased the risk of battery explosion.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a novel lithium battery case with high safety to solve the above technical problems.

The purpose of the utility model is realized by the following technical scheme:

a novel lithium battery shell with high safety comprises a bottom plate, two L-shaped side plates and two flat side plates, wherein the two L-shaped side plates and the two flat side plates are oppositely arranged, a first L-shaped block and a second L-shaped block are respectively arranged at the two opposite ends of the bottom plate, a third L-shaped block and a fourth L-shaped block are respectively arranged at the opposite ends of the two L-shaped side plates, the first L-shaped block and the third L-shaped block are mutually clamped, and the second L-shaped block and the fourth L-shaped block are mutually clamped; elastic pieces are arranged between the first L-shaped block and the third L-shaped block and between the second L-shaped block and the fourth L-shaped block.

Furthermore, graphene cooling fins are arranged on the two L-shaped side plates.

Further, the bottom of the outer side of the bottom plate is provided with a heat dissipation strip, the heat dissipation strip is fixedly connected with the bottom plate, and the heat dissipation strip is located between the third L-shaped block and the fourth L-shaped block.

Further, the elastic member is a metal spring or elastic rubber.

Furthermore, the flat side plate is fixedly connected with the bottom plate, sealing blocks are arranged on two opposite sides of the flat side plate, a clamping groove is formed in the L-shaped side plate, and the sealing blocks are clamped on the clamping groove.

Further, the sealing block extends along the height direction of the flat side plate and is flush with the upper end and the lower end of the flat side plate.

Furthermore, the first L-shaped block, the second L-shaped block and the bottom plate are of an integrally formed structure.

Furthermore, the third L-shaped block and one of the L-shaped side plates are of an integrally formed structure, and the fourth L-shaped block and the other L-shaped side plate are of an integrally formed structure.

Compared with the prior art, the utility model has the beneficial effects that:

the lithium battery shell is of a split structure, the bottom plate and the two L-shaped side plates are connected through the first L-shaped block and the third L-shaped block, and the second L-shaped block and the fourth L-shaped block, so that the top surface of the bottom plate is perpendicular to the side surfaces of the L-shaped side plates and the flat side plates, the R angle of the bottom of the battery is eliminated, the interference between the laminated battery cell and the R angle of the bottom of the battery shell is avoided, the internal structure of the battery is more stable, and the use safety of the battery is effectively improved; in addition, be equipped with the elastic component between first L type piece and third L type piece, and second L type piece and the fourth L type piece for realize the stability of shell equipment, when lamination electricity core inflation, can promote L type curb plate and move to the outside, thereby increase the inner space of shell, avoid lamination electricity core to receive violent extrusion impact, thereby further improve the safety in utilization of battery.

Drawings

Fig. 1 is a sectional view showing the overall structure of an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a top view of an embodiment of the present invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and the accompanying drawings.

Referring to fig. 1-3, a preferred embodiment of the present invention is shown.

A novel lithium battery shell with high safety comprises a bottom plate 1, two L-shaped side plates 2 and two flat side plates 3 which are oppositely arranged, wherein a first L-shaped block 11 and a second L-shaped block 12 are respectively arranged at two opposite ends of the bottom plate 1, a third L-shaped block 21 and a fourth L-shaped block 22 are respectively arranged at one opposite ends of the two L-shaped side plates 2, the first L-shaped block 11 and the third L-shaped block 21 are mutually clamped, and the second L-shaped block 12 and the fourth L-shaped block 22 are mutually clamped; elastic pieces 4 are arranged between the first L-shaped block 11 and the third L-shaped block 21 and between the second L-shaped block 12 and the fourth L-shaped block 22. Wherein, the elastic member 4 is a metal spring or elastic rubber. The bottom plate 1 and the two L-shaped side plates 2 are connected through the first L-shaped block 11, the third L-shaped block 21, the second L-shaped block 12 and the fourth L-shaped block 22, so that the top surface of the bottom plate 1 is perpendicular to the side surfaces of the L-shaped side plates 2 and the flat side plate 3, the R angle at the bottom of the battery is eliminated, the interference between the laminated battery cell and the R angle at the bottom of the battery shell is avoided, the internal structure of the battery is more stable, and the use safety of the battery is effectively improved; in addition, the elastic piece 4 is arranged between the first L-shaped block 11 and the third L-shaped block 21, and between the second L-shaped block 12 and the fourth L-shaped block 22, so that the stability of shell assembly is realized, when the laminated cell expands, the L-shaped side plate 2 can be pushed to move outwards, the inner space of the shell is increased, the laminated cell is prevented from being subjected to violent extrusion impact, and the use safety of the battery is further improved.

It should be noted that, when the first L-shaped block 11 and the third L-shaped block 21 are clamped, a certain displacement margin is left on the side where the two contact each other, so that the laminated cell can push the L-shaped side plate 2 to move outward when expanding. Similarly, the second L-shaped block 12 and the fourth L-shaped block 22 have the same combination structure.

All be equipped with graphite alkene fin 5 on two L type curb plates 2 of this embodiment. The bottom of the outer side of the bottom plate 1 is provided with a heat dissipation strip 6, the heat dissipation strip 6 is fixedly connected with the bottom plate 1, and the heat dissipation strip 6 is located between the third L-shaped block 21 and the fourth L-shaped block 22. Graphene cooling fin 5 and heat dissipation strip 6 all are used for dispelling the heat for lamination electricity core, avoid the too high and influence safety in utilization of the temperature of lamination electricity core in the use.

In this embodiment, flat curb plate 3 and bottom plate 1 fixed connection, the relative both sides of flat curb plate 3 are equipped with sealed piece 31, and L type curb plate 2 is equipped with the draw-in groove, and sealed piece 31 card is located on the draw-in groove. The flat side plate 3 and the bottom plate 1 can be of an integrally formed structure, the sealing block 31 is arranged on the flat side plate 3 and on two sides of the flat side plate which are contacted with the two L-shaped side plates 2, and the clamping groove on the L-shaped side plate 2 is clamped, so that the flat side plate 3 and the L-shaped side plate 2 are assembled, and the sealing performance of the shell can be improved. It should be noted that the sealing block 31 extends along the height direction of the flat side plate 3 and is flush with the upper and lower ends of the flat side plate 3, so that the connection stability between the flat side plate 3 and the L-shaped side plate 2 can be effectively improved.

In the present embodiment, the first L-shaped block 11 and the second L-shaped block 12 are integrally formed with the base plate 1. The third L-shaped block 21 and one of the L-shaped side plates 2 are integrally formed, and the fourth L-shaped block 22 and the other L-shaped side plate 2 are integrally formed. The strength and the life of improvement shell that integrated into one piece formula structure can be very big.

In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate orientations or positional relationships, are used based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

While the utility model has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The novel lithium battery shell is high in safety and is characterized by comprising a bottom plate (1), two L-shaped side plates (2) and two flat side plates (3), wherein the two L-shaped side plates (2) and the two flat side plates (3) are oppositely arranged, a first L-shaped block (11) and a second L-shaped block (12) are respectively arranged at two opposite ends of the bottom plate (1), a third L-shaped block (21) and a fourth L-shaped block (22) are respectively arranged at one opposite ends of the two L-shaped side plates (2), the first L-shaped block (11) and the third L-shaped block (21) are mutually clamped, and the second L-shaped block (12) and the fourth L-shaped block (22) are mutually clamped; elastic pieces (4) are arranged between the first L-shaped block (11) and the third L-shaped block (21) and between the second L-shaped block (12) and the fourth L-shaped block (22).

2. The novel lithium battery shell with high safety as claimed in claim 1, wherein graphene cooling fins (5) are arranged on both L-shaped side plates (2).

3. The novel lithium battery shell with high safety as claimed in claim 1, wherein a heat dissipation strip (6) is arranged at the bottom of the outer side of the bottom plate (1), the heat dissipation strip (6) is fixedly connected with the bottom plate (1), and the heat dissipation strip (6) is located between the third L-shaped block (21) and the fourth L-shaped block (22).

4. The novel lithium battery shell with high safety as claimed in claim 1, wherein the elastic member (4) is a metal spring or an elastic rubber.

5. The novel lithium battery shell with high safety as claimed in claim 1, wherein the flat side plate (3) is fixedly connected with the bottom plate (1), sealing blocks (31) are arranged on two opposite sides of the flat side plate (3), the L-shaped side plate (2) is provided with a clamping groove, and the sealing blocks (31) are clamped on the clamping groove.

6. The novel lithium battery shell with high safety as claimed in claim 5, characterized in that the sealing block (31) extends along the height direction of the flat side plate (3) and is flush with the upper and lower ends of the flat side plate (3).

7. The novel lithium battery shell with high safety as claimed in any one of claims 1-6, wherein the first L-shaped block (11) and the second L-shaped block (12) are integrally formed with the bottom plate (1).

8. The novel lithium battery shell with high safety as claimed in any one of claims 1 to 6, wherein the third L-shaped block (21) and one of the L-shaped side plates (2) are of an integral structure, and the fourth L-shaped block (22) and the other L-shaped side plate (2) are of an integral structure.