CN216413152U

CN216413152U - Quick heat radiation structure of cell-phone lithium cell

Info

Publication number: CN216413152U
Application number: CN202123019917.0U
Authority: CN
Inventors: 王传宝
Original assignee: Dajiang New Energy Shenzhen Co ltd
Current assignee: Dajiang New Energy Shenzhen Co ltd
Priority date: 2021-12-04
Filing date: 2021-12-04
Publication date: 2022-04-29
Anticipated expiration: 2031-12-04

Abstract

The utility model provides a quick heat dissipation structure of a lithium battery of a mobile phone, which relates to the technical field of lithium batteries and comprises a lithium battery cell, wherein the bottom surface of the lithium battery cell is fixedly connected with a heat dissipation plate, one side of the top surface of the heat dissipation plate is fixedly connected with a heat insulation plate, the top surface of the heat insulation plate is fixedly connected with a heat transfer plate, one side of the heat transfer plate is fixedly connected with a heat conduction plate, the top surface of the heat conduction plate is fixedly connected with a battery protection plate, the battery protection plate comprises a PCB (printed circuit board) and heat dissipation fins, the surfaces of the heat insulation plate and the heat transfer plate are provided with heat dissipation holes, the heat insulation plate is fixedly connected with the heat transfer plate through the heat insulation plate, the heat conduction between the heat dissipation plate and the heat transfer plate is reduced, the heat dissipation plate is used for dissipating heat of the lithium battery cell, the heat transfer plate is used for dissipating heat of the PCB, the surfaces of the heat insulation plate and the heat transfer plate are provided with heat dissipation holes, and the interior of the heat dissipation fins are fixedly connected with heat dissipation silicone grease, the lithium battery cell of the heat transfer plate portion can be subjected to heat dissipation.

Description

Quick heat radiation structure of cell-phone lithium cell

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a quick heat dissipation structure of a lithium battery of a mobile phone.

Background

Lithium ion secondary batteries (lithium batteries for short) have the characteristics of small volume, light weight, high working voltage, high energy, long cycle life, small pollution and the like, are ideal energy sources for future development, and are applied in more and more fields. But the lithium cell has in the use and generates heat seriously, and when the shell radiating effect of lithium cell was unsatisfactory, the inside atmospheric pressure of lithium cell rose appeared easily, when inside atmospheric pressure exceeded the blasting critical point, the battery will explode to cause the casualties.

According to the patent number CN213988978U, the quick heat dissipation structure of the lithium battery of the mobile phone comprises a battery protection board, a plurality of heat conduction blocks, a heat dissipation connecting piece, a heat dissipation fin and a battery core, wherein the heat conduction blocks are connected with the battery protection board, the heat conduction blocks, the heat dissipation connecting piece and the heat dissipation fin are sequentially connected, the battery protection board is electrically connected with the battery core, and the battery protection board is adjacent to and closely attached to the heat dissipation connecting piece; the battery protection board is internally provided with a plurality of layers of PCBs and a plurality of layers of heat dissipation plates which are mutually overlapped, the heat dissipation plates are connected with the heat conduction blocks, when the battery protection board is quickly charged, heat in the charging process can be quickly transferred to the heat conduction blocks by the heat dissipation plates, and then the heat of the heat conduction blocks is transferred to the heat dissipation connecting pieces and the heat dissipation fins for quick heat dissipation; through the design, the lithium battery of the mobile phone can dissipate heat rapidly under the heating conditions of quick charging and the like, and the temperature of the lithium battery is reduced.

Above-mentioned quick heat radiation structure of cell-phone lithium cell, utilize the heating panel to transmit the heat in the charging process to the heat conduction piece rapidly, again by heat conduction piece heat transfer to heat dissipation connecting piece and fin fast heat dissipation, when the lithium cell charges, when the battery is when charging and discharging, the PCB board generates heat and can transmit the heat to the fin on battery surface, can increase the temperature of fin position electric core, when the lithium cell is overheated, can transmit the heat to PCB board surface, the heating of electric core and the generating heat between the battery protection shield are inhomogeneous.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a quick heat dissipation structure for a lithium battery of a mobile phone.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a quick heat radiation structure of cell-phone lithium cell, includes lithium cell electricity core, the bottom surface fixedly connected with heating panel of lithium cell electricity core, top surface one side fixedly connected with heat insulating board of heating panel, the top surface fixedly connected with heat transfer plate of heat insulating board, one side fixedly connected with heat-conducting plate of heat transfer plate, the top surface fixedly connected with battery protection shield of heat-conducting plate, the battery protection shield includes PCB board and fin, the louvre has been seted up on the surface of heat insulating board and heat transfer plate, the inside fixedly connected with heat dissipation silicone grease of louvre, the surface of heat transfer plate is located and has seted up the fretwork hole between heat-conducting plate and the lithium cell electricity core.

Preferably, the surface of the heat transfer plate is provided with hollowed holes at equal intervals in a linear array between the heat transfer plate and the lithium battery cell.

Preferably, the section of the heat conducting plate is L-shaped.

Preferably, the side wall of the heat conducting plate is provided with an installation groove matched with the radiating fin, and the radiating fin is fixedly connected with the installation groove.

Preferably, the PCB and the radiating fins are fixedly connected in a mutually superposed mode.

Preferably, the heat insulation plate and the surface of the heat transfer plate are provided with heat dissipation holes at equal intervals in a linear array.

Preferably, the section of the heat insulation plate is L-shaped.

Advantageous effects

According to the utility model, the heat insulation plate is fixedly connected between the heat dissipation plate and the heat transfer plate, the heat dissipation plate and the heat transfer plate are separated through the heat insulation plate, so that heat conduction between the heat dissipation plate and the heat transfer plate is reduced, the heat dissipation plate is used for dissipating heat of the lithium battery cell, the heat transfer plate is used for dissipating heat of the PCB, meanwhile, the heat dissipation holes are formed in the surfaces of the heat dissipation plate and the heat transfer plate, and the heat dissipation silicone grease is fixedly connected inside the heat dissipation holes, so that heat dissipation can be performed on the lithium battery cell of the heat dissipation plate part.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is a bottom view of the present invention;

fig. 4 is an enlarged view of fig. 3 at B according to the present invention.

Illustration of the drawings:

1. a lithium battery cell; 2. a heat transfer plate; 3. a battery protection plate; 301. a PCB board; 302. a heat sink; 4. a heat conducting plate; 5. a heat dissipation plate; 6. heat dissipation holes; 7. heat dissipation silicone grease; 8. a heat insulation plate; 9. mounting grooves; 10. and (6) hollowing out the holes.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, a fast heat dissipation structure for a lithium battery of a mobile phone comprises a lithium battery cell 1, a heat dissipation plate 5 is fixedly connected to the bottom surface of the lithium battery cell 1, a heat insulation plate 8 is fixedly connected to one side of the top surface of the heat dissipation plate 5, a heat transfer plate 2 is fixedly connected to the top surface of the heat transfer plate 8, a heat conduction plate 4 is fixedly connected to one side of the heat transfer plate 2, a battery protection plate 3 is fixedly connected to the top surface of the heat conduction plate 4, the battery protection plate 3 comprises a PCB 301 and a heat dissipation fin 302, heat dissipation holes 6 are formed in the surfaces of the heat insulation plate 8 and the heat transfer plate 2, heat dissipation silicone grease 7 is fixedly connected to the inside of the heat dissipation holes 6, hollow holes 10 are formed in the surface of the heat transfer plate 2 between the heat conduction plate 4 and the lithium battery cell 1 in a linear array at equal intervals, and the hollow holes 10 can reduce the weight of the heat transfer plate 2, the heat transfer plate 2 is a copper fixing piece, the heat transfer plate 2 can be conveniently bent through the hollow hole 10, the section of the heat conduction plate 4 is L-shaped, the side wall of the heat conduction plate 4 is provided with an installation groove 9 matched with the heat radiating fin 302, the heat radiating fin 302 is fixedly connected with the installation groove 9, the battery protection plate 3 can be conveniently installed through the installation groove 9, the heat of the heat radiating fin 302 can be conveniently transmitted to the heat conduction plate 4, the heat is transmitted to the heat transfer plate 2 through the heat conduction plate 4, the heat radiating fin 302 can transmit the heat of the PCB 301 to the surface of the heat transfer plate 2 for heat radiation, the heat radiating fin 302 and the heat conduction plate 4 adopt independent copper sheets or silver sheets without electrical property, only the heat conduction effect is achieved, the battery protection plate 3 cannot be abnormal in function due to exposure, the heat radiating holes of the PCB 301 and the heat radiating fin 302 are fixedly connected in a mutual overlapping mode, the heat insulation plate 8 and the surface linear array of the heat transfer plate 2 are provided with 6 at equal intervals, the heat insulating plate 8 has an L-shaped cross section, and the portion of the heat radiating plate 5 located on the bottom surface of the heat insulating plate 8 is thinner than the exposed portion.

The working principle of the utility model is as follows: fixedly connected with heat insulating board 8 between heating panel 5 and heat transfer plate 2, separate heating panel 5 and heat transfer plate 2 between through heat insulating board 8, heat conduction has been reduced to take place between heating panel 5 and the heat transfer plate 2, heating panel 5 and the heat transfer plate 2 independent work heat dissipation of each other, and each other does not influence, heating panel 8 is used for dispelling the heat to lithium battery electricity core 1, heat transfer plate 2 is used for dispelling the heat to PCB board 301, louvre 6 has been seted up on the surface of heat insulating board 8 and heat transfer plate 2 simultaneously, and the inside fixedly connected with heat dissipation silicone grease 7 of louvre 6, can dispel the heat to lithium battery electricity core 1 of heat transfer plate 2 parts, can not influence lithium battery electricity core 1's radiating efficiency.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a quick heat radiation structure of cell-phone lithium cell, includes lithium cell electricity core (1), its characterized in that: the lithium battery protection plate comprises a lithium battery cell (1), wherein a heat dissipation plate (5) is fixedly connected to the bottom surface of the lithium battery cell (1), a heat insulation plate (8) is fixedly connected to one side of the top surface of the heat dissipation plate (5), a heat transfer plate (2) is fixedly connected to the top surface of the heat insulation plate (8), a heat conduction plate (4) is fixedly connected to one side of the heat transfer plate (2), a battery protection plate (3) is fixedly connected to the top surface of the heat conduction plate (4), the battery protection plate (3) comprises a PCB (printed circuit board) 301 and heat dissipation fins (302), heat dissipation holes (6) are formed in the surfaces of the heat insulation plate (8) and the heat transfer plate (2), heat dissipation silicone grease (7) is fixedly connected to the inside of the heat dissipation holes (6), and hollow holes (10) are formed between the heat conduction plate (4) and the lithium battery cell (1) on the surface of the heat transfer plate (2).

2. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the surface of the heat transfer plate (2) is positioned between the heat transfer plate (4) and the lithium battery cell (1), and hollowed-out holes (10) are formed in the linear array at equal intervals.

3. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the section of the heat conducting plate (4) is L-shaped.

4. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the side wall of the heat conducting plate (4) is provided with a mounting groove (9) matched with the radiating fin (302), and the radiating fin (302) is fixedly connected with the mounting groove (9).

5. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the PCB (301) and the heat sink (302) are fixedly connected in a mutually superposed mode.

6. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the heat insulation plate (8) and the surface of the heat transfer plate (2) are provided with heat dissipation holes (6) in a linear array at equal intervals.

7. The quick heat dissipation structure of the lithium battery of the mobile phone according to claim 1, characterized in that: the section of the heat insulation plate (8) is L-shaped.