CN218472025U

CN218472025U - Lithium battery pack convenient for heat dissipation

Info

Publication number: CN218472025U
Application number: CN202222447257.4U
Authority: CN
Inventors: 余天赐; 黄震
Original assignee: Hengdian Group DMEGC Magnetics Co Ltd
Current assignee: Hengdian Group DMEGC Magnetics Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-02-10
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a lithium cell package convenient to heat dissipation belongs to lithium cell package technical field, including the casing, the bottom of casing is connected with at the bottom of the shell, and the top of casing is connected with the upper cover, and the inside of casing is equipped with the battery module, and the battery module includes the electric core support of two relative settings, is equipped with a plurality of electricity core between two electric core supports, and the outside of electric core support is connected with the connection piece, and the outside of two connection pieces is connected with heat conduction silica gel pad respectively. The utility model utilizes the high heat and insulation characteristics of the heat-conducting silica gel to transfer the heat generated by the battery core to the external environment by the arrangement of the heat-conducting silica gel pad, thereby effectively reducing the temperature inside the battery pack; the utility model discloses a setting of heat conduction reed, when guaranteeing the radiating effect, when avoiding battery module and casing assembly, heat conduction silica gel pad and shells inner wall direct contact lead to heat conduction silica gel pad friction to damage.

Description

Lithium battery pack convenient for heat dissipation

Technical Field

The utility model belongs to the technical field of the lithium cell package, concretely relates to lithium cell package convenient to heat dissipation.

Background

With the maturity of lithium ion battery technology and the advantages of high energy density, light weight and the like, the lithium ion battery has gradually replaced lead-acid batteries and gradually becomes the mainstream power supply of two-wheeled electric vehicles. Lithium batteries are very sensitive to temperature, and can greatly reduce the service life of the battery when the lithium battery works in a high-temperature environment for a long time.

At present, a heat dissipation device is not generally designed in a small power lithium battery pack, and heat generated by a battery core is transferred to a shell through air in a gap inside the battery. The main heat-conducting medium in the heat conduction process is air, the heat conduction coefficient is low, and the heat dissipation effect is not obvious.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a lithium cell package convenient to heat dissipation has the heat that can produce electric core and transmits to the shell rapidly, reduces the characteristics of the inside temperature of battery.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a lithium cell package convenient to heat dissipation, includes the casing, and the bottom of casing is connected with at the bottom of the shell, and the top of casing is connected with the upper cover, and the inside of casing is equipped with the battery module, and the battery module includes the electric core support of two relative settings, is equipped with a plurality of electricity core between two electric core supports, and the outside of electric core support is connected with the connection piece, and the outside of two connection pieces is connected with heat conduction silica gel pad respectively.

In order when guaranteeing the radiating effect, when avoiding battery module and casing assembly, heat conduction silica gel pad and shells inner wall direct contact lead to heat conduction silica gel pad friction to damage, furtherly, the outside of heat conduction silica gel pad is equipped with the heat conduction reed. The heat conduction reed is a metal component with high heat conductivity coefficient.

In order to facilitate the connection between the heat conduction spring and the battery cell support, further, the heat conduction spring is connected with the battery cell support through screws, and through holes corresponding to the screws are formed in the heat conduction silica gel pad.

For the concave-convex structure of better matching shell inner wall, further, the heat conduction reed includes middle reed and side reed, and wherein, middle reed is connected at the intermediate position of heat conduction silica gel pad, and the side reed sets up the both sides at middle reed.

In order to have certain elasticity, can carry out certain buffering to the battery module when the lithium cell package falls, further, be equipped with a plurality of arch on the heat conduction reed.

In order to facilitate welding with the extreme end of the battery core, furthermore, the connecting sheet is provided with a plurality of conducting strips, and the conducting strips are provided with open slots.

In order to facilitate the heat dissipation, furthermore, a plurality of heat dissipation holes are also arranged on the conductive sheet.

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

1. the utility model utilizes the high heat and insulation characteristics of the heat-conducting silica gel to transfer the heat generated by the battery core to the external environment by arranging the heat-conducting silica gel pad, thereby effectively reducing the temperature inside the battery pack;

2. the utility model discloses a heat conduction reed sets up, when guaranteeing the radiating effect, when avoiding battery module and casing assembly, heat conduction silica gel pad and casing inner wall direct contact lead to heat conduction silica gel pad friction damage;

3. the utility model discloses heat conduction reed includes middle reed and side reed, wherein, middle reed connects the intermediate position at heat conduction silica gel pad, and the side reed sets up in the both sides of middle reed, the concave-convex structure of the better matching shell inner wall;

4. the utility model discloses it is protruding to be equipped with a plurality of on the heat conduction reed, has certain elasticity, can carry out certain buffering to the battery module when the lithium cell package falls.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an exploded view of the battery module according to the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

fig. 3 is a schematic structural view of the battery module of the present invention;

fig. 4 is a schematic structural view of the heat-conducting silica gel pad of the present invention;

fig. 5 is a schematic cross-sectional structure of the present invention;

FIG. 6 is a schematic view of a partially enlarged structure of the connecting sheet of the present invention;

in the figure: 1. a shell bottom; 2. a battery module; 21. a battery cell bracket; 22. an electric core; 23. connecting sheets; 231. a conductive sheet; 232. an open slot; 233. heat dissipation holes; 3. a housing; 4. an upper cover; 5. a heat-conducting silica gel pad; 51. a through hole; 6. a heat conductive reed; 61. a middle reed; 62. a side spring plate; 63. and (4) protruding.

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 efforts all belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-6, the present invention provides the following technical solutions: the utility model provides a lithium cell package convenient to heat dissipation, including casing 3, the bottom of casing 3 is connected with the shell end 1, the top of casing 3 is connected with upper cover 4, the shell end 1, casing 3 and upper cover 4 are the aluminum alloy material, the inside of casing 3 is equipped with battery module 2, battery module 2 includes the electric core support 21 of two relative settings, be equipped with a plurality of electricity core 22 between two electric core supports 21, the outside of electric core support 21 is connected with connection piece 23, the outside of two connection pieces 23 is connected with thermal silica gel pad 5 respectively.

Through adopting above-mentioned technical scheme, through the setting of heat conduction silica gel pad 5, utilize heat conduction silica gel's high fever and insulating characteristic, with the heat transfer to external environment that electric core 22 produced, the inside temperature of effectual reduction battery package.

Specifically, the outer side of the heat-conducting silica gel pad 5 is provided with a heat-conducting reed 6. The heat conductive spring 6 is made of aluminum alloy or a material with a higher heat conductivity coefficient, such as copper or brass, and is preferably made of aluminum alloy in this embodiment.

Through adopting above-mentioned technical scheme, through the setting of heat conduction reed 6, when guaranteeing the radiating effect, when avoiding battery module 2 and 3 subassemblies of casing, heat conduction

silica gel pad

5 and 3 inner wall direct contacts of casing lead to 5 friction damage of heat conduction silica gel pad.

Specifically, the heat conduction reed 6 is connected with the battery cell support 21 through a screw, and the heat conduction silica gel pad 5 is provided with a through hole 51 corresponding to the screw.

By adopting the technical scheme, the connection between the heat conduction reed 6 and the battery cell support 21 is facilitated.

Example 2

The present embodiment is different from embodiment 1 in that: specifically, heat conduction reed 6 includes middle reed 61 and side reed 62, wherein, middle reed 61 connects in the intermediate position of heat conduction silica gel pad 5, and side reed 62 sets up the both sides at middle reed 61.

Through adopting above-mentioned technical scheme, the concave-convex structure of 3 inner walls of better matching casing.

Example 3

The present embodiment is different from embodiment 1 in that: specifically, the heat conduction reed 6 is provided with a plurality of protrusions 63, and the protrusions 63 are formed by punching.

Through adopting above-mentioned technical scheme, have certain elasticity, can carry out certain buffering to battery module 2 when the lithium cell package falls.

Example 4

The present embodiment is different from embodiment 1 in that: specifically, the connecting sheet 23 is provided with a plurality of conductive sheets 231, and the conductive sheets 231 are provided with open slots 232.

By adopting the above technical solution, the conducting strip 231 is used for welding with the pole end of the battery core 22, and the opening groove 232 is convenient for welding.

Specifically, the conductive sheet 231 is further provided with a plurality of heat dissipation holes 233.

Through adopting above-mentioned technical scheme, be favorable to the giving off of heat.

To sum up, the heat generated by the battery cell 22 is transferred to the external environment by the arrangement of the heat-conducting silica gel pad 5 and by utilizing the high heat and insulation characteristics of the heat-conducting silica gel, so that the temperature inside the battery pack is effectively reduced; the utility model discloses a heat conduction reed 6 setting, when guaranteeing the radiating effect, when avoiding battery module 2 and casing 3 to assemble, heat conduction

silica gel pad

5 and 3 inner wall direct contact lead to heat conduction silica gel pad 5 friction damage; the utility model discloses heat conduction reed 6 includes middle reed 61 and side reed 62, wherein, middle reed 61 connects in the middle position of heat conduction silica gel pad 5, and side reed 62 sets up in the both sides of middle reed 61, the concave-convex structure of the better matching shell 3 inner wall; the utility model discloses be equipped with the protruding 63 of a plurality of on the heat conduction reed 6, have certain elasticity, can carry out certain buffering to battery module 2 when the lithium cell package falls.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lithium cell package convenient to heat dissipation, includes the casing, its characterized in that: the bottom of casing is connected with at the bottom of the shell, and the top of casing is connected with the upper cover, and the inside of casing is equipped with the battery module, and the battery module includes the electric core support of two relative settings, is equipped with a plurality of electricity core between two electric core supports, and the outside of electric core support is connected with the connection piece, and the outside of two connection pieces is connected with heat conduction silica gel pad respectively.

2. The lithium battery pack facilitating heat dissipation of claim 1, wherein: and a heat conduction reed is arranged on the outer side of the heat conduction silica gel pad.

3. The lithium battery pack facilitating heat dissipation of claim 2, wherein: the heat conduction reed is a metal component with high heat conductivity coefficient.

4. The lithium battery pack facilitating heat dissipation as recited in claim 2, wherein: the heat conduction reed is connected with the battery cell support through a screw, and a through hole corresponding to the screw is formed in the heat conduction silica gel pad.

5. The lithium battery pack facilitating heat dissipation of claim 2, wherein: the heat conduction reed includes middle reed and side reed, and wherein, middle reed is connected at the intermediate position of heat conduction silica gel pad, and the side reed sets up the both sides at middle reed.

6. The lithium battery pack facilitating heat dissipation of claim 2, wherein: the heat conduction reed is provided with a plurality of bulges.

7. The lithium battery pack facilitating heat dissipation of claim 1, wherein: the connecting sheet is provided with a plurality of conducting sheets, and the conducting sheets are provided with open slots.

8. The lithium battery pack facilitating heat dissipation as recited in claim 7, wherein: and a plurality of heat dissipation holes are also formed in the conductive sheet.