CN213242661U

CN213242661U - Lithium cell dispels heat fast

Info

Publication number: CN213242661U
Application number: CN202021985373.6U
Authority: CN
Inventors: 张宏岩; 吴洪雁; 邱子健; 张亚康; 连少康
Original assignee: Jiangsu Lvkeyuan Power Technology Co ltd
Current assignee: Jiangsu Lvkeyuan Power Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-18
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a quick heat dissipation lithium battery, which comprises a lithium battery body, wherein the lithium battery body comprises a protection shell, a positive electrode lug and a negative electrode lug, a negative electrode, a diaphragm, a positive electrode and electrolyte are arranged inside the protection shell, the upper end surface and the lower end surface of the protection shell are respectively provided with a top cover and a bottom cover, the lower end surface of the top cover is fixedly provided with a heat dissipation insulating gasket, the surface of the heat dissipation insulating gasket is fixedly provided with two cap holes, the two sides of each cap hole are respectively provided with a first heat dissipation hole groove and a second heat dissipation hole groove, the upper end surface of the bottom cover is fixedly provided with a heat conduction silica gel gasket, the lower end surface of the heat conduction silica gel gasket is fixedly provided with a heat dissipation aluminum; the utility model discloses having improved the radiating effect of lithium cell greatly, can making the inside heat that produces of lithium cell can not gather, avoid producing local overheat, improved the work efficiency of lithium cell simultaneously, increased the life of lithium cell.

Description

Lithium cell dispels heat fast

Technical Field

The utility model relates to a lithium cell technical development field specifically is a quick heat dissipation lithium cell.

Background

Lithium batteries are batteries which use lithium metal or lithium alloy as a negative electrode material and use non-aqueous electrolyte solution, and have very high environmental requirements for processing, storage and use of the lithium metal due to the very active chemical characteristics of the lithium metal. Lithium batteries in the existing market are various, but the defect that the heat dissipation effect is poor generally exists, ordinary lithium batteries are tightly wrapped by a shell, the reserved heat dissipation space is very narrow, other auxiliary heat dissipation structures are not provided, the heat of the lithium batteries cannot be effectively dissipated, the lithium batteries work at high temperature for a long time, and the service life of the lithium batteries can be shortened.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art scheme, the utility model provides a quick heat dissipation lithium cell can the effectual problem that the solution background art provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a quick heat dissipation lithium cell, includes lithium cell body, lithium cell body includes protection casing, anodal ear and negative pole ear, inside negative pole, diaphragm, anodal and the electrolyte of being provided with of protection casing, protection casing up end and lower terminal surface are equipped with top cap and bottom respectively, the fixed heat dissipation insulating gasket that is equipped with of terminal surface under the top cap, heat dissipation insulating gasket fixed surface is equipped with two cap holes, cap hole both sides are equipped with first heat dissipation hole groove and second heat dissipation hole groove respectively, the fixed heat conduction silica gel gasket that is provided with of bottom cap up end, the fixed heat dissipation aluminum plate that is equipped with of terminal surface under the heat conduction silica gel gasket, the fixed surface embedding of heat dissipation aluminum plate has the heat pipe.

By way of further illustration, the first heat dissipation hole groove and the second heat dissipation hole groove have the same inner diameter.

As a further explanation, the surface of the heat dissipation insulating gasket is fixedly provided with six arc-shaped through holes.

As a further elaboration, the top cover is connected with the heat dissipation insulating gasket in a clamping and pressing manner, and the bottom cover is connected with the heat conduction silica gel gasket in a clamping and pressing manner.

As a further illustration, the positive tab and the negative tab are fixedly disposed above the protection casing.

By way of further illustration, the separator is fixedly disposed between the positive electrode and the negative electrode.

As further elaboration, the outer surface of the protective shell is fixedly provided with a heat dissipation layer.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model greatly improves the heat dissipation effect of the lithium battery, can prevent the heat generated in the lithium battery from gathering, avoids local overheating, improves the working efficiency of the lithium battery, and prolongs the service life of the lithium battery; through the arrangement of the heat-conducting silica gel gasket, the heat-radiating aluminum plate and the heat-conducting pipe, heat which is not easy to radiate from the bottom of the lithium battery is conducted onto the heat-radiating aluminum plate through the heat-conducting silica gel sheet, and the heat-conducting pipe on the heat-radiating aluminum plate transfers the heat to the metal shell for heat radiation, so that the lithium battery can quickly radiate the heat, and meanwhile, the high electrical insulation and puncture-proof performance of the silica gel sheet can well protect the lithium battery; the arc-shaped through hole enables the heat dissipation area of the lithium battery to be enlarged, so that the heat dissipation effect of the lithium battery is improved, the insulation effect of the heat dissipation insulation gasket cannot be reduced, on one hand, the heat dissipation effect is achieved, and on the other hand, the insulation performance cannot be reduced.

Drawings

Fig. 1 is a schematic view of an overall structure of a lithium battery with rapid heat dissipation according to the present invention;

fig. 2 is a schematic diagram of an internal structure of a lithium battery with rapid heat dissipation according to the present invention;

fig. 3 is a schematic view of an internal structure of a heat dissipation insulating spacer for a lithium battery with rapid heat dissipation according to the present invention;

fig. 4 is another schematic structural diagram of a lithium battery with rapid heat dissipation according to the present invention.

Reference numbers in the figures: 1. a lithium battery body; 2. a protective housing; 3. a positive tab; 4. a negative tab; 5. a negative electrode; 6. a diaphragm; 7. a positive electrode; 8. an electrolyte; 9. a top cover; 10. a bottom cover; 11. a heat dissipating insulating spacer; 12. a cap hole; 13. a first heat dissipation hole groove; 14. a second heat dissipation hole groove; 15. a heat-conducting silica gel gasket; 16. a heat dissipation aluminum plate; 17. a heat conducting pipe; 18. an arc-shaped through hole.

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.

As shown in fig. 1-4, a lithium battery capable of dissipating heat rapidly includes a lithium battery body 1, the lithium battery body 1 includes a protective casing 2, a positive electrode 7 ear 3 and a negative electrode 5 ear 4, the protective casing 2 is provided with a negative electrode 5, a diaphragm 6, a positive electrode 7 and an electrolyte 8 inside, the upper end surface and the lower end surface of the protective casing 2 are respectively provided with a top cover 9 and a bottom cover 10, the lower end surface of the top cover 9 is fixedly provided with a heat dissipation insulating gasket 11, the surface of the heat dissipation insulating gasket 11 is fixedly provided with two cap holes 12, two sides of each cap hole 12 are respectively provided with a first heat dissipation hole groove 13 and a second heat dissipation hole groove 14, the upper end surface of the bottom cover 10 is fixedly provided with a heat conduction silica gel gasket 15, the lower end surface of the heat conduction silica gel gasket 15 is fixedly provided with a heat dissipation aluminum plate.

Preferably, the fixed heat dissipation insulating gasket 11 that is equipped with of terminal surface under the top cap 9, heat dissipation insulating gasket 11's setting can be when the lithium cell produces the heat, and heat dissipation rate can be accelerated to heat dissipation cooling to the lithium cell is quick, improves the life of lithium cell to heat dissipation cooling.

Preferably, two cap holes 12 are fixedly arranged on the surface of the heat dissipation insulating gasket 11, and a space for placing the positive electrode 7 lug 3 and the negative electrode 5 lug 4 can be reserved by arranging the cap holes 12.

Preferably, heat dissipation insulating gasket 11 fixed surface is equipped with arc through-hole 18, and the quantity of arc through-hole 18 is six for the heat radiating area of lithium cell increases, thereby has improved the radiating effect of lithium cell, can not make heat dissipation insulating gasket 11's insulating effect reduce simultaneously, has both reached the radiating effect on the one hand, also can not reduce insulating nature simultaneously.

Preferably, bottom 10 up end is fixed locates heat conduction silica gel gasket 15, the fixed heat dissipation aluminum plate 16 that is equipped with of terminal surface under the heat conduction silica gel gasket 15, the fixed embedding of heat dissipation aluminum plate 16 lower surface has heat pipe 17, and the difficult heat that gives off of lithium cell bottom conducts heat dissipation aluminum plate 16 through heat conduction silica gel piece on, and heat pipe 17 on the heat dissipation aluminum plate 16 dispels the heat on transferring the heat to metal casing for the heat dissipation that the lithium cell can be quick, and the high electrical insulation of silica gel piece can have fine guard action to the lithium cell with anti-puncture performance simultaneously.

Preferably, the outer fixed surface of the protection shell 2 is provided with a heat dissipation layer, the heat dissipation layer can absorb the heat generated by the battery in the working process and diffuse the hot air in the air, so that the temperature of the whole lithium battery is reduced, and the phenomenon of explosion of the lithium battery due to higher temperature is avoided.

Preferably, the inner diameters of the first heat dissipation hole grooves 13 and the second heat dissipation hole grooves 14 are consistent; the top cover 9 is connected with the heat dissipation insulating gasket 11 in a clamping and pressing manner, and the bottom cover 10 is connected with the heat conduction silica gel gasket 15 in a clamping and pressing manner; the anode 7 lug 3 and the cathode 5 lug 4 are fixedly arranged above the protective shell 2; the separator 6 is fixedly disposed between the positive electrode 7 and the negative electrode 5.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a quick heat dissipation lithium cell which characterized in that: the lithium battery comprises a lithium battery body, the lithium battery body comprises a protection shell, an anode tab and a cathode tab, wherein a cathode, a diaphragm, an anode and electrolyte are arranged inside the protection shell, the upper end face and the lower end face of the protection shell are respectively provided with a top cover and a bottom cover, the heat dissipation insulating gasket is fixedly arranged on the lower end face of the top cover, two cap holes are fixedly formed in the surface of the heat dissipation insulating gasket, a first heat dissipation hole groove and a second heat dissipation hole groove are respectively formed in two sides of each cap hole, a heat conduction silica gel gasket is fixedly arranged on the upper end face of the bottom cover, a heat dissipation aluminum plate is fixedly arranged on the lower end face of the heat conduction silica gel gasket, and.

2. The lithium battery of claim 1, wherein: the inner diameters of the first heat dissipation hole groove and the second heat dissipation hole groove are consistent.

3. The lithium battery of claim 1, wherein: the surface of the heat dissipation insulating gasket is fixedly provided with six arc-shaped through holes.

4. The lithium battery of claim 1, wherein: the top cover is connected with the heat dissipation insulating gasket in a clamping and pressing mode, and the bottom cover is connected with the heat conduction silica gel gasket in a clamping and pressing mode.

5. The lithium battery of claim 1, wherein: the positive electrode lug and the negative electrode lug are fixedly arranged above the protection shell.

6. The lithium battery of claim 1, wherein: the diaphragm is fixedly arranged between the positive electrode and the negative electrode.

7. The lithium battery of claim 1, wherein: and a heat dissipation layer is fixedly arranged on the outer surface of the protection shell.