CN215184133U

CN215184133U - Explosion-proof lithium polymer battery

Info

Publication number: CN215184133U
Application number: CN202121718964.1U
Authority: CN
Inventors: 鲜海泉; 谢建锋; 周玉杰
Original assignee: Huizhou Youju Lithium Energy Technology Co ltd
Current assignee: Huizhou Youju Lithium Energy Technology Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-12-14
Anticipated expiration: 2031-07-27

Abstract

The utility model relates to the technical field of lithium polymer batteries, and discloses an explosion-proof lithium polymer battery, which comprises an electrolyte layer, wherein a positive plate is arranged inside the electrolyte layer, a negative plate is arranged below the positive plate, a shell is arranged outside the electrolyte layer, a heat dissipation hole cushion is embedded and installed on the outer wall surface of the shell in an equidistance way, sealing strips are respectively installed on the two side edges of the heat dissipation hole cushion, a honeycomb hole structure is arranged on the surface of the heat dissipation hole cushion, a framework structure is arranged at one end of the electrolyte layer, a granular layer is arranged outside the framework structure, the surface of the insulation sheet is designed to be high in the middle and low in two ends, and the surface of the insulation sheet is smooth, the utility model discloses an electrolyte solution end part is provided with a granular layer and a framework structure, gaps are arranged between granules inside the granular layer, the heat inside the battery is dissipated through the end granular layer, and the internal heat is prevented from being discharged in time, resulting in excessive internal temperature of the battery and explosion.

Description

Explosion-proof lithium polymer battery

Technical Field

The utility model belongs to the technical field of lithium polymer battery, concretely relates to explosion-proof lithium polymer battery.

Background

Lithium ion polymer batteries have evolved from lithium ion batteries, which are a type of lithium ion battery, and are usually formed by connecting several identical parallel sub-battery cells to increase the discharge current, or by connecting several battery packs in series to increase the available voltage.

The traditional lithium polymer battery has poor heat dissipation effect, internal heat cannot be discharged in time, a large amount of heat is accumulated on the surface of a shell, the explosion phenomenon easily occurs, and serious potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof lithium polymer battery to the inside heat of the lithium polymer battery who provides in solving above-mentioned background art can't in time be discharged, and the shell radiating effect is poor, appears local overheated phenomenon easily, has the problem of potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an explosion-proof lithium polymer battery, includes the electrolyte layer, the inside of electrolyte layer is equipped with positive plate, the below of positive plate is equipped with the negative pole piece, the outside of electrolyte layer is equipped with the shell, the louvre bed course is installed in the outer wall surface equidistance embedding of shell, the sealing strip is all installed at the both sides edge of louvre bed course, the surface of louvre bed course is equipped with honeycomb holes structure, the one end of electrolyte layer is equipped with skeleton texture, the skeleton texture outside is equipped with the grained layer.

Preferably, the outer wall of grained layer is hugged closely and is equipped with the insulating piece, the surface of insulating piece is established into the middle height both ends and is low, and the surface of insulating piece is smooth.

Preferably, the outer wall of the positive plate is sleeved with a first material layer, and the outer wall of the negative plate is sleeved with a second material layer.

Preferably, a partition plate is arranged between the positive plate and the negative plate, and a convex pattern structure is arranged on the surface of the partition plate.

Preferably, the inner wall of the shell is provided with a packaging film in a close contact manner, the packaging film forms a closed structure, and the electrolyte layer is arranged inside the packaging film.

Preferably, the one end that the insulating piece was kept away from to the shell is equipped with the bed course, the thickness of bed course is no longer than three millimeters, the bottom of shell is equipped with the spacer block.

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

(1) the utility model discloses a tip at electrolyte is provided with grained layer and skeleton texture, has the clearance between the inside granule of grained layer, and the inside heat of battery is passed through the tip grained layer and is effluvized, avoids the unable timely discharge of inside heat, leads to the inside high temperature of battery, phenomenons such as explosion.

(2) The utility model discloses an install louvre bed course and sealing strip at shell surface embedding, the heat of shell surface gathering sees through the louvre bed course and discharges, has strengthened the radiating effect of shell, avoids appearing the local overheated phenomenon of shell.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a top view of the partition plate of the present invention;

in the figure: 1-a housing; 2-packaging film; 3-a first material layer; 4-positive plate; 5-cushion coat; 6-an electrolyte layer; 7-a partition plate; 71-relief structure; 8-a second material layer; 9-negative pole piece; 10-a particulate layer; 11-a framework structure; 12-an insulating sheet; 13-spacer blocks; 14-a heat dissipation hole cushion layer; 15-sealing strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

Referring to fig. 1-3, the present invention provides the following technical solutions: an explosion-proof lithium polymer battery comprises an electrolyte layer 6, a positive plate 4 is arranged inside the electrolyte layer 6, a negative plate 9 is arranged below the positive plate 4, a shell 1 is arranged outside the electrolyte layer 6, a heat dissipation hole cushion layer 14 is embedded and installed on the outer wall surface of the shell 1 at equal intervals, sealing strips 15 are installed on the edges of two sides of the heat dissipation hole cushion layer 14, a honeycomb hole structure is arranged on the surface of the heat dissipation hole cushion layer 14, a skeleton structure 11 is arranged at one end of the electrolyte layer 6, a particle layer 10 is arranged outside the skeleton structure 11,

in this embodiment, when the battery is when using, electrolyte layer 6's temperature risees gradually, the inside heat of battery is discharged in passing through grained layer 10 to external environment, and the heat of lateral wall department then discharges through louvre bed course 14 in the shell 1, louvre bed course 14 surface is equipped with honeycomb holes structure, and install inside shell 1 because of louvre bed course 14 embedding, consequently, the thickness of honeycomb holes structure department is less than the whole thickness of shell 1, more be favorable to inside thermal loss, louvre bed course 14 chooses for use the better material of heat conductivity, louvre bed course 14 forms closed loop cover and establishes at shell 1 outer wall simultaneously, the intensity of shell 1 has been improved.

Further, the outer wall of grained layer 10 is hugged closely and is equipped with insulating piece 12, and insulating piece 12's surface is established into high both ends in the middle and is low, through the structural shape who changes insulating piece 12, collects the heat in insulating piece 12's surface top position, makes things convenient for the heat to discharge more, and insulating piece 12's surface is smooth.

Further, the outer wall cover of positive plate 4 is equipped with first material layer 3, and the outside cover of negative pole piece 9 is equipped with second material layer 8, and the inside on first material layer 3 and second material layer 8 is equipped with ion exchange membrane respectively, is favorable to the exchange of ion.

Furthermore, a separation plate 7 is arranged between the positive plate 4 and the negative plate 9, a convex-concave structure 71 is arranged on the surface of the separation plate 7, and the surface of the separation plate 7 is concave-convex, and the thickness of the separation plate is not more than one millimeter.

Further, the inner wall of shell 1 is hugged closely and is equipped with packaging film 2, and packaging film 2 forms a airtight structure, and electrolyte layer 6 establishes in packaging film 2's inside to packaging film 2 is whole for seamless linking up, is difficult for taking place to break and leak.

Further, one end of the shell 1, which is far away from the insulating sheet 12, is provided with a cushion layer 5, the thickness of the cushion layer 5 is not more than three millimeters, and the bottom end of the shell 1 is provided with a spacer 13.

The utility model discloses a theory of operation and use flow: when the utility model is used, the surface of the shell 1 is embedded with the heat dissipation hole cushion layer 14, the outer wall edge of the heat dissipation hole cushion layer 14 is bonded with the sealing strip 15, the heat on the surface of the battery shell 1 is discharged in time through the heat dissipation hole cushion layer 14, the phenomenon that the local temperature on the surface of the shell 1 is too high is avoided, the inside of the electrolyte layer 6 is respectively provided with the positive plate 4 and the negative plate 9, the outside of the positive plate 4 and the negative plate 9 are respectively wrapped with the first material layer 3 and the second material layer 8, the separator 7 is also arranged between the positive plate 4 and the negative plate 9, the surface of the separator 7 is provided with the convex pattern structure 71 which is more beneficial to the flow of electrons, the top end of the shell 1 is provided with the insulating sheet 12 which can effectively avoid the electric leakage phenomenon of the battery, when the battery works normally, the internal temperature rises, at the moment, the internal heat is discharged from the end part of the shell 1 through the particle layer 10, the internal temperature of the battery is quickly reduced, and the service life of the battery is effectively prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An explosion-proof lithium polymer battery characterized in that: including electrolyte layer (6), the inside of electrolyte layer (6) is equipped with positive plate (4), the below of positive plate (4) is equipped with negative pole piece (9), the outside of electrolyte layer (6) is equipped with shell (1), louvre bed course (14) are installed in the embedding of the outer wall surface equidistance of shell (1), sealing strip (15) are all installed to the both sides edge of louvre bed course (14), the surface of louvre bed course (14) is equipped with honeycomb holes structure, the one end of electrolyte layer (6) is equipped with skeleton texture (11), skeleton texture (11) outside is equipped with grained layer (10).

2. An explosion-proof lithium polymer battery according to claim 1, characterized in that: the outer wall of granular layer (10) is hugged closely and is equipped with insulating piece (12), the surface of insulating piece (12) is set up high both ends in the middle and is low, and the surface of insulating piece (12) is smooth.

3. An explosion-proof lithium polymer battery according to claim 1, characterized in that: the outer wall cover of positive plate (4) is equipped with first material layer (3), the outside cover of negative pole piece (9) is equipped with second material layer (8).

4. An explosion-proof lithium polymer battery according to claim 1, characterized in that: a separation plate (7) is arranged between the positive plate (4) and the negative plate (9), and a convex pattern structure (71) is arranged on the surface of the separation plate (7).

5. An explosion-proof lithium polymer battery according to claim 1, characterized in that: the inner wall of shell (1) is hugged closely and is equipped with packaging film (2), and packaging film (2) form a airtight structure, electrolyte layer (6) are established in the inside of packaging film (2).

6. An explosion-proof lithium polymer battery according to claim 2, characterized in that: one end of the shell (1) far away from the insulating sheet (12) is provided with a cushion layer (5), the thickness of the cushion layer (5) is not more than three millimeters, and the bottom end of the shell (1) is provided with a spacer block (13).