CN211062829U

CN211062829U - Heat radiation structure of lithium battery

Info

Publication number: CN211062829U
Application number: CN201922216678.4U
Authority: CN
Inventors: 陈本骏
Original assignee: Roofer Electronic Technology Shanwei Co ltd
Current assignee: Roofer Electronic Technology Shanwei Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-07-21
Anticipated expiration: 2029-12-12

Abstract

The utility model discloses a heat radiation structure of lithium cell relates to heat radiation structure technical field, specifically is a heat radiation structure of lithium cell, including the device shell, the outside fixed mounting of device shell has fixed frame. This heat radiation structure of lithium cell, through the setting of the inside phase transition heat absorption ring of device shell, when lithium cell body work produced heat, the outside heat dissipation chamber of lithium cell body can increase the area of contact of heat and phase transition heat absorption ring, make the phase transition heat absorption ring fully absorb the heat that lithium cell body produced, the inside of transferring the heat to aluminium type recess piece by heat-conducting layer and phase transition heat-conducting layer by the phase transition heat absorption ring again, the aluminium type recess piece can increase the area of contact of heat and air, and carry out the heat exchange with the air, steam after the heat exchange is discharged by the outside ventilation hole of aluminium type recess piece, the effect of evacuating has been reached to lithium cell body work production heat.

Description

Heat radiation structure of lithium battery

Technical Field

The utility model relates to a heat radiation structure technical field specifically is a heat radiation structure of lithium cell.

Background

The lithium battery can generate heat when being charged or discharged, particularly, under the condition of heavy load, the lithium battery pack consisting of a plurality of lithium batteries discharges with larger working current, the generated heat is correspondingly large, the temperature of the lithium battery pack can be increased if excessive heat cannot be rapidly and effectively diffused, the lithium battery is used under the condition of high temperature for a long time, the working performance of the lithium battery can be finely reduced or even easily loses efficacy, and the service life of the lithium battery is seriously influenced.

The radiating mode of current lithium cell adopts the mode with the air convection mostly to dispel the heat, but the lithium cell when the installation, fixing device mostly need wrap up the lithium cell around, this just leads to around the lithium cell radiating effect relatively poor, and then make the temperature around the lithium cell higher, long-term in the past, can cause the damage to the lithium cell, in addition, current device is when dispelling the heat to the lithium cell, the required fixed environment of lithium cell of different specifications size is different, heat abstractor needs to be changed, increase the heat dissipation cost, therefore, we have developed and researched the heat radiation structure of a lithium cell.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a heat radiation structure of lithium cell has solved the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a heat radiation structure of lithium cell, includes the device shell, the outside fixed mounting of device shell has fixed frame, the inside of device shell is provided with the heat-conducting layer, the both sides fixed mounting of device shell inner chamber has the phase transition heat-conducting layer, the inside of device shell is provided with the division board, the heat dissipation chamber has been seted up to the inside of heat-conducting layer, the inside fixed mounting in heat dissipation chamber has lithium cell body.

Optionally, fixed frame is rectangular frame, fixed frame's inside is provided with the ventilation hole, the one end in ventilation hole is located fixed frame's outside, the other end in ventilation hole passes fixed frame and sets up the outside at the inside phase transition heat-conducting layer of device shell, and all is provided with five to ten ventilation holes on each face of fixed frame.

Optionally, the shape in heat dissipation chamber is the circular slot, fixed mounting has the phase transition heat absorption ring on the outer wall in heat dissipation chamber, the material of phase transition heat absorption ring is heat conduction phase change material, and the inside fixedly connected with fastening spring of phase transition heat absorption ring.

Optionally, one end of each fastening spring is fixedly mounted on the inner wall of the phase change heat absorption ring, the outer end of each fastening spring is fixedly connected with an arc-shaped fixing block, the number of the fastening springs and the number of the arc-shaped fixing blocks are four, and the four fastening springs and the four arc-shaped fixing blocks are respectively arranged on the positions, opposite to the inner angles, of the phase change heat absorption ring.

Optionally, the phase-change heat conduction layer is fixedly mounted outside the heat conduction layer, the aluminum groove sheet is fixedly connected outside the phase-change heat conduction layer, and the phase-change heat conduction layer is also made of a heat-dissipation phase-change material.

Optionally, the shape of arc fixed block is quarter arc piece, the outside of arc fixed block passes through fastening spring fixed connection on the inner wall of phase transition heat absorption ring, and the inside packing of arc fixed block has elastic sponge.

The utility model provides a heat radiation structure of lithium cell possesses following beneficial effect:

1. this heat radiation structure of lithium cell, through the setting of the inside phase transition heat absorption ring of device shell, when lithium cell body work produced heat, the outside heat dissipation chamber of lithium cell body can increase the area of contact of heat and phase transition heat absorption ring, make the phase transition heat absorption ring fully absorb the heat that lithium cell body produced, the inside of transferring the heat to aluminium type recess piece by heat-conducting layer and phase transition heat-conducting layer by the phase transition heat absorption ring again, the aluminium type recess piece can increase the area of contact of heat and air, and carry out the heat exchange with the air, steam after the heat exchange is discharged by the outside ventilation hole of aluminium type recess piece, the effect of evacuating lithium cell body work produced heat has been reached, the relatively poor problem of radiating effect of existing device to lithium cell body during operation has been solved.

2. This heat radiation structure of lithium cell, through the outside arc fixed block of lithium cell body and fastening spring's setting, can carry out corresponding length's flexible according to the different lithium cell bodies of specification, the setting of arc fixed block arc is gone up in the cooperation, can carry out high-efficient fixing to lithium cell body according to the demand, in addition, the inside packing of arc fixed block has the setting of cavernosum, can dispel the heat to lithium cell body in fixed lithium cell body, avoid fixed position to gather up a large amount of heats and lead to the too high condition of lithium cell body outside temperature to appear.

Drawings

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

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention.

In the figure: 1. a device housing; 2. a heat conductive layer; 3. a lithium battery body; 4. a phase change heat absorption ring; 5. a phase change heat conducting layer; 6. a heat dissipation cavity; 7. a partition plate; 8. an aluminum-type groove piece; 9. a vent hole; 10. a fixed frame; 11. an arc-shaped fixed block; 12. and (5) fastening the spring.

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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a heat radiation structure of a lithium battery comprises a device shell 1, a fixed frame 10 is fixedly arranged outside the device shell 1, the fixed frame 10 is a rectangular frame, a vent hole 9 is arranged inside the fixed frame 10, one end of the vent hole 9 is positioned outside the fixed frame 10, the other end of the vent hole 9 penetrates through the fixed frame 10 and is arranged outside a phase change heat conduction layer 5 inside the device shell 1, five to ten vent holes 9 are arranged on each surface of the fixed frame 10, when the heat inside an aluminum type groove sheet 8 is contacted with the outside air and exchanges heat, the vent hole 9 can transmit the high-temperature gas after the heat exchange outside the aluminum type groove sheet 8 to the outside of the fixed frame 10 and suck the cooling gas outside the fixed frame 10 into the fixed frame 10, so that the heat inside the aluminum type groove sheet 8 can exchange heat with the outside air efficiently, and the device has the effect of performing efficient high-temperature heat radiation on a lithium battery body 3, the inside of the device shell 1 is provided with a heat conduction layer 2, the outside of the heat conduction layer 2 is fixedly provided with a phase-change heat conduction layer 5, the outside of the phase-change heat conduction layer 5 is fixedly connected with an aluminum groove sheet 8, the material of the phase-change heat conduction layer 5 is also a heat dissipation phase-change material, the arrangement of the phase-change heat conduction layer 5 can transmit the heat absorbed by the phase-change heat absorption ring 4 to the inside of the aluminum groove sheet 8 for heat dissipation, the arrangement of three grooves of the aluminum groove sheet 8 can increase the contact area of the heat inside of the aluminum groove sheet 8 and the outside air, the heat dissipation effect of the aluminum groove sheet 8 is increased, the problem that the heat dissipation effect of the existing device on the lithium battery body 3 is poor is solved, the two sides of the inner cavity of the device shell 1 are fixedly provided with the phase-change heat conduction layers 5, the inside of the device shell 1 is, the phase change heat absorption ring 4 is fixedly installed on the outer wall of the heat dissipation cavity 6, the phase change heat absorption ring 4 is made of a heat conduction phase change material, the fastening spring 12 is fixedly connected to the inside of the phase change heat absorption ring 4, one end of the fastening spring 12 is fixedly installed on the inner wall of the phase change heat absorption ring 4, the outer end of the fastening spring 12 is fixedly connected with the arc-shaped fixing block 11, the arc-shaped fixing block 11 is in a quarter arc shape, the outside of the arc-shaped fixing block 11 is fixedly connected to the inner wall of the phase change heat absorption ring 4 through the fastening spring 12, elastic sponge is filled in the arc-shaped fixing block 11, the arrangement of the shape of the arc-shaped fixing block 11 can achieve the effect that the heat outside of the lithium battery body 3 can be contacted with the outside air while the lithium battery body 3 is fixed, and the arrangement of the sponge layer in the arc-shaped fixing block, the situation that the lithium battery body 3 is damaged due to overhigh ambient temperature when the lithium battery body 3 works is avoided, four fastening springs 12 and four arc-shaped fixing blocks 11 are respectively arranged at the positions opposite to the internal angle of the phase change heat absorption ring 4, the fastening springs 12 can be extended and contracted with corresponding lengths according to the specification of the lithium battery body 3, the effect of efficiently fixing the lithium battery body 3 can be achieved by matching the arrangement of the arc-shaped plates of the arc-shaped fixing blocks 11, the problem that the fixing effect of the existing device on the lithium battery bodies 3 with different specifications is not good is solved, in addition, the arrangement of the four arc-shaped fixing blocks 11 can leave the contact area with the air outside the lithium battery body 3 during fixing, and the effect of increasing the heat dissipation efficiency of the lithium battery body 3 while fixing the lithium battery body 3 is achieved, the practicality of the device is increased, the setting of 4 phase change materials of phase change heat absorption ring can carry out high-efficient absorption to lithium cell body 3 at the heat that heat dissipation chamber 6 inside produced, can effectively reduce the temperature of heat dissipation chamber 6 inside, reaches and carries out high-efficient radiating effect to lithium cell body 3, has solved the not good problem of current device to 3 radiating effect of lithium cell body, and the inside fixed mounting in heat dissipation chamber 6 has lithium cell body 3.

To sum up, this heat radiation structure of lithium cell, during the use, place lithium cell body 3 and rely on arc fixed block 11 and fastening spring 12 to fix it to the inside of heat dissipation chamber 6, when lithium cell body 3 during operation, the heat that produces around lithium cell body 3 can be fully absorbed by heat dissipation chamber 6 outside phase transition heat absorption ring 4, phase transition heat absorption ring 4 transmits the inside of aluminium type notch piece 8 with the heat that absorbs through heat-conducting layer 2 and phase transition heat-conducting layer 5, the outside recess of aluminium type notch piece 8 can make the heat fully contact with the air, reach and make 8 inside heats of aluminium type notch piece and outside air carry out the effect of high-efficient heat transfer, finally, the steam after accomplishing the heat transfer is discharged by ventilation hole 9, can.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a heat radiation structure of lithium cell, includes device shell (1), its characterized in that: the utility model discloses a heat dissipation device, including device shell (1), the outside fixed mounting of device shell (1) has fixed frame (10), the inside of device shell (1) is provided with heat-conducting layer (2), the both sides fixed mounting of device shell (1) inner chamber has phase transition heat-conducting layer (5), the inside of device shell (1) is provided with division board (7), heat dissipation chamber (6) have been seted up to the inside of heat-conducting layer (2), the inside fixed mounting in heat dissipation chamber (6) has lithium cell body (3).

2. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein: fixed frame (10) are rectangular frame, the inside of fixed frame (10) is provided with ventilation hole (9), the one end in ventilation hole (9) is located the outside of fixed frame (10), the other end in ventilation hole (9) passes fixed frame (10) and sets up the outside at inside phase transition heat-conducting layer (5) of device shell (1), and all is provided with five to ten ventilation holes (9) on each face of fixed frame (10).

3. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein: the shape in heat dissipation chamber (6) is the circular recess, fixed mounting has phase transition heat absorption ring (4) on the outer wall in heat dissipation chamber (6), the material of phase transition heat absorption ring (4) is heat conduction phase change material, and the inside fixedly connected with fastening spring (12) of phase transition heat absorption ring (4).

4. The heat dissipation structure of a lithium battery as claimed in claim 3, wherein: one end fixed mounting of fastening spring (12) is on the inner wall of phase transition heat absorption ring (4), the outer end fixedly connected with arc fixed block (11) of fastening spring (12), fastening spring (12) and arc fixed block (11) respectively are provided with four, and four fastening springs (12) and arc fixed block (11) set up respectively on phase transition heat absorption ring (4) inside angle relative position.

5. The heat dissipation structure of a lithium battery as claimed in claim 1, wherein: the outside fixed mounting of heat-conducting layer (2) has phase transition heat-conducting layer (5), the outside fixedly connected with aluminium type notch piece (8) of phase transition heat-conducting layer (5), and the material of phase transition heat-conducting layer (5) also is heat dissipation phase change material.

6. The heat dissipation structure of a lithium battery as claimed in claim 4, wherein: the shape of arc fixed block (11) is quarter arc piece, the outside of arc fixed block (11) is through fastening spring (12) fixed connection on the inner wall of phase transition heat absorption ring (4), and the inside packing of arc fixed block (11) has elastic sponge.