CN216750157U

CN216750157U - Soft package lithium battery capable of preventing electrolyte leakage

Info

Publication number: CN216750157U
Application number: CN202123263240.5U
Authority: CN
Inventors: 周红波
Original assignee: Jiangxi Huayue New Energy Co ltd
Current assignee: Jiangxi Huayue New Energy Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-06-14
Anticipated expiration: 2031-12-23

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a soft-packaged lithium battery capable of preventing electrolyte leakage, which comprises a bottom plate, wherein support rods are fixedly arranged on the bottom plate at equal intervals, a plurality of connecting rods are fixedly arranged between the support rods, an electric core is fixedly arranged on the upper surface of the bottom plate, a negative electrode interface and a positive electrode interface are arranged at the upper end of the electric core, a cover plate is arranged at the upper end of the electric core through a mounting component, a fixed plate is arranged between the support rods, a polymer shell is arranged outside the fixed plate, two through holes are arranged on the cover plate, the electric core is arranged on the upper surface of the bottom plate, a plurality of support rods are arranged on the upper surface of the bottom plate, a plurality of connecting rods are arranged between the support rods, the electric core is arranged between the connecting rods, the electric core can be protected through the connecting rods, and the device can be prevented from being extruded, the electrolyte leaks due to direct extrusion on the battery core, and the safety of the device is improved.

Description

Soft package lithium battery capable of preventing electrolyte leakage

Technical Field

The utility model relates to a lithium cell technical field particularly, relates to a can prevent soft packet of lithium cell of electrolyte leakage.

Background

The soft package lithium battery is only provided with a polymer shell on the liquid lithium ion battery. The structure of the soft package lithium battery is packaged by adopting an aluminum-plastic film, the soft package lithium battery can blow air and crack at most under the condition of potential safety hazard, and the novel soft package lithium battery provided by the patent with the application number of CN202022367507.4 comprises a closed space formed by the aluminum-plastic film, and a negative current collector, a solid electrolyte, a positive active material layer and a positive current collector which are arranged in the closed space layer by layer; the negative current collector and the positive current collector are made of porous foam metal, and the negative current collector is loaded with lithium-philic nano-particles; the positive electrode active material layer is in a slurry shape and is sealed between the solid electrolyte and a positive electrode current collector. The utility model discloses will the negative pole mass flow body with the setting of anodal mass flow body is porous foam structure, and porous foam structure makes the corresponding increase of the specific surface area of negative pole mass flow body and anodal mass flow body, and the specific surface area increase and charge-discharge in-process electric current size is unchangeable, and then makes the active material's of battery local current density diminish.

However, according to the technical scheme, when the battery is extruded, the battery body can be damaged, so that the electrolyte in the battery leaks, potential safety hazards are caused, and the service life of the battery can be shortened.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a can prevent soft packet of lithium cell of electrolyte leakage, can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a can prevent soft packet of lithium cell of electrolyte leakage, includes the bottom plate, equidistance fixed mounting has the bracing piece above the bottom plate, and is a plurality of fixed mounting has the connecting rod between the bracing piece, fixed surface installs electric core on the bottom plate, electric core upper end is provided with negative pole interface, anodal interface, the apron is installed through the installation component in the electric core upper end, install the fixed plate between the bracing piece, the fixed plate outside is provided with polymer shell, be provided with two through-holes on the apron, negative pole interface, anodal interface pass from two through-holes respectively.

Preferably, two the one side that the bracing piece is close to each other all is provided with the fixed slot, the fixed block is all installed to the fixed plate both sides, two the fixed block all sets up inside the fixed slot.

Preferably, the surface of the fixing plate is provided with a plurality of radiating fins, and the upper end of the fixing plate is provided with a first bolt hole.

Preferably, the cover plate is provided with a first bolt, and one end of the first bolt is arranged in the first bolt hole.

Preferably, the mounting assembly comprises a first sealing groove, a second sealing groove, a first sealing block and a second sealing block, the first sealing groove is formed in the upper end of the battery core, and the second sealing groove is formed in the upper end of the connecting rod.

Preferably, the first sealing block and the second sealing block are both mounted on the lower surface of the cover plate, the first sealing block is arranged inside the first sealing groove, and the second sealing block is arranged inside the second sealing groove.

Preferably, a second bolt hole is formed in the second seal groove, a second bolt is arranged on the first seal block, and one end of the second bolt is arranged in the second bolt hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) through setting up electric core at the bottom plate upper surface, be provided with a plurality of bracing pieces at the bottom plate upper surface, set up a plurality of connecting rods between the bracing piece, thereby set up electric core between a plurality of connecting rods, thereby can protect electric core through the connecting rod, can prevent this device when receiving the extrusion, directly extrude to cause the electrolyte to leak on electric core, the potential safety hazard appears, has increased the life of this device.

(2) Through setting up first sealed piece, second sealed piece respectively inside first seal groove, second seal groove to can make the relation of connection between apron and the electric core inseparabler, the leakproofness is stronger, sets up inside the second bolt hole through the second bolt, thereby can make the stability ability of this device stronger, makes the relation of connection between this device inseparabler, and the leakproofness is stronger.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a soft-packaged lithium battery capable of preventing electrolyte leakage according to the present invention;

fig. 2 is a schematic top view of a bottom plate of a soft-packaged lithium battery capable of preventing electrolyte leakage according to the present invention;

fig. 3 is a schematic side view of a fixing plate of a soft-packaged lithium battery capable of preventing electrolyte leakage according to the present invention;

fig. 4 is a schematic side view of a bottom plate of a soft-packaged lithium battery capable of preventing electrolyte leakage according to the present invention;

fig. 5 is the utility model relates to a can prevent apron structural schematic of soft packet of lithium cell that electrolyte leaked.

In the figure: 1. a polymeric shell; 2. mounting the component; 201. a first seal groove; 202. a second bolt hole; 203. a second seal groove; 204. a first seal block; 205. a second bolt; 206. a second seal block; 3. a negative electrode interface; 4. a cover plate; 5. a positive electrode interface; 6. an electric core; 7. a fixing plate; 8. a first bolt hole; 9. a base plate; 10. a support bar; 11. a heat dissipating fin; 12. a fixed block; 13. a through hole; 14. a first bolt; 15. a connecting rod; 16. and fixing the grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in fig. 1-5, a can prevent soft packet of lithium cell of electrolyte leakage, includes bottom plate 9, equidistance fixed mounting has bracing piece 10 above the bottom plate 9, and is a plurality of fixed mounting has connecting rod 15 between the bracing piece 10, fixed surface installs electric core 6 on the

bottom plate

9, 6 upper ends of electric core are provided with negative pole interface 3,

anodal interface

5, 6 upper ends of electric core install apron 4 through installation component 2, install fixed plate 7 between the bracing piece 10, the fixed plate 7 outside is provided with polymer housing 1, be provided with two through-holes 13 on the apron 4, negative pole interface 3, anodal interface 5 pass from two through-holes 13 respectively.

It can be understood that, two the one sides that the bracing piece 10 is close to each other all are provided with fixed slot 16, fixed block 12 is all installed to fixed plate 7 both sides, two fixed block 12 all sets up inside fixed slot 16, through setting up fixed block 12 inside fixed slot 16 to can guarantee the stability of fixed plate 7.

Wherein, fixed plate 7 surface is provided with a plurality of radiating fin 11, fixed plate 7 upper end is provided with first bolt hole 8, be provided with first bolt 14 on the apron 4, first bolt 14 one end sets up inside first bolt hole 8, thereby can be with the inside radiating rate of this device with higher speed through setting up radiating fin 11, through setting up first bolt 14 inside first bolt hole 8, thereby can be in the same place apron 4 and fixed plate 7 setting, make the stability of this device better.

Wherein, the mounting assembly 2 comprises a first sealing groove 201, a second sealing groove 203, a first sealing block 204, and a second sealing block 206, the first sealing groove 201 is disposed at the upper end of the battery cell 6, the second sealing groove 203 is disposed at the upper end of the connecting rod 15, the first sealing block 204 and the second sealing block 206 are both mounted at the lower surface of the cover plate 4, the first sealing block 204 is disposed inside the first sealing groove 201, the second sealing block 206 is disposed inside the second sealing groove 203, a second bolt hole 202 is disposed inside the second sealing groove 203, a second bolt 205 is disposed on the first sealing block 204, one end of the second bolt 205 is disposed inside the second bolt hole 202, and the first sealing block 204 and the second sealing block 206 are respectively disposed inside the first sealing groove 201 and the second sealing groove 203, so that the connection relationship between the cover plate 4 and the battery cell 6 can be tighter, the sealing performance is stronger, and the second bolt 205 is arranged inside the second bolt hole 202, so that the stability of the device can be stronger.

This can prevent soft packet of lithium cell's that electrolyte leaks theory of operation:

when in use, the battery cell 6 is arranged on the upper surface of the bottom plate 9, the plurality of support rods 10 are arranged on the upper surface of the bottom plate 9, the plurality of connecting rods 15 are arranged between the support rods 10, the battery cell 6 is arranged between the connecting rods 15, the battery cell 6 can be protected through the connecting rods 15, so that the device can be prevented from being directly extruded on the battery cell 6 to cause electrolyte leakage when being extruded, the first sealing block 204 and the second sealing block 206 are respectively arranged inside the first sealing groove 201 and the second sealing groove 203, so that the connection relation between the cover plate 4 and the battery cell 6 can be tighter, the sealing performance is stronger, the second bolt 205 is arranged inside the second bolt hole 202, so that the stability of the device can be stronger, the heat dissipation speed inside the device can be accelerated by arranging the heat dissipation fins 11, the first bolt 14 is arranged inside the first bolt hole 8, so that the cover plate 4 can be arranged together with the fixing plate 7, resulting in a better stability of the device.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A soft package lithium battery capable of preventing electrolyte leakage comprises a bottom plate (9), and is characterized in that: equidistance fixed mounting has bracing piece (10) above bottom plate (9), and is a plurality of fixed mounting has connecting rod (15) between bracing piece (10), fixed surface installs electric core (6) on bottom plate (9), electric core (6) upper end is provided with negative pole interface (3), anodal interface (5), apron (4) are installed through installation component (2) in electric core (6) upper end, install fixed plate (7) between bracing piece (10), fixed plate (7) outside is provided with polymer housing (1), be provided with two through-holes (13) on apron (4), negative pole interface (3), anodal interface (5) pass from two through-holes (13) respectively.

2. The lithium pouch cell capable of preventing leakage of electrolyte according to claim 1, characterized in that: two the one side that bracing piece (10) are close to each other all is provided with fixed slot (16), fixed block (12), two are all installed to fixed plate (7) both sides fixed block (12) all set up inside fixed slot (16).

3. The lithium pouch cell capable of preventing leakage of electrolyte according to claim 1, characterized in that: the surface of the fixing plate (7) is provided with a plurality of radiating fins (11), and the upper end of the fixing plate (7) is provided with a first bolt hole (8).

4. The lithium pouch cell capable of preventing leakage of electrolyte according to claim 1, characterized in that: a first bolt (14) is arranged on the cover plate (4), and one end of the first bolt (14) is arranged in the first bolt hole (8).

5. The lithium pouch cell capable of preventing leakage of electrolyte according to claim 1, characterized in that: the mounting assembly (2) comprises a first sealing groove (201), a second sealing groove (203), a first sealing block (204) and a second sealing block (206), wherein the first sealing groove (201) is arranged at the upper end of the battery cell (6), and the second sealing groove (203) is arranged at the upper end of the connecting rod (15).

6. The lithium pouch battery capable of preventing leakage of an electrolyte according to claim 5, wherein: the first sealing block (204) and the second sealing block (206) are mounted on the lower surface of the cover plate (4), the first sealing block (204) is arranged inside the first sealing groove (201), and the second sealing block (206) is arranged inside the second sealing groove (203).

7. The lithium pouch battery capable of preventing leakage of an electrolyte according to claim 6, wherein: a second bolt hole (202) is formed in the second sealing groove (203), a second bolt (205) is arranged on the first sealing block (204), and one end of the second bolt (205) is arranged in the second bolt hole (202).