CN215184183U

CN215184183U - Battery pack with efficient heat dissipation of graphene sheets

Info

Publication number: CN215184183U
Application number: CN202120588943.6U
Authority: CN
Inventors: 章春元
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-12-14
Anticipated expiration: 2031-03-23

Abstract

The utility model provides a battery pack with high-efficient radiating of graphite alkene piece, including the heat dissipation shell that has the installation cavity, install the electric core module and the graphite alkene piece of installation cavity, all negative poles of electric core module all face towards same direction, graphite alkene piece including heat conduction main part and with the heat conduction fin that the heat conduction main part is connected, all negative poles of electric core module all with heat conduction main part heat conduction is connected, heat conduction fin with heat dissipation shell heat conduction is connected. The utility model has the advantages that: on the basis of not increasing the volume of the battery pack, the heat dissipation efficiency of the battery pack is improved.

Description

Battery pack with efficient heat dissipation of graphene sheets

Technical Field

The utility model relates to a battery package especially relates to a battery package with graphite alkene piece is high-efficient radiating.

Background

The battery pack provided by the existing electric bicycle and electric motorcycle has narrow space and requires higher energy, the battery pack can generate a large amount of heat during charging and discharging during working, particularly, the heat is discharged with high multiplying power, the heat cannot be rapidly dissipated after being accumulated, the temperature of the battery is higher and higher, thermal runaway and even fire explosion can be generated after the battery reaches the limit, and the danger is caused to the life and property safety of people.

Therefore, how to improve the heat dissipation efficiency of the battery pack without increasing the volume of the battery pack is an urgent technical problem to be solved by those skilled in the art.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a battery pack with graphite alkene piece is high-efficient radiating.

The utility model provides a battery pack with high-efficient radiating of graphite alkene piece, including the heat dissipation shell that has the installation cavity, install the electric core module and the graphite alkene piece of installation cavity, all negative poles of electric core module all face towards same direction, graphite alkene piece including heat conduction main part and with the heat conduction fin that the heat conduction main part is connected, all negative poles of electric core module all with heat conduction main part heat conduction is connected, heat conduction fin with heat dissipation shell heat conduction is connected.

As a further improvement, all negative poles of the cell module and the heat conduction main body of the graphene sheet are provided with heat conduction grease.

As a further improvement, the heat conducting fins of the graphene sheets and the heat-dissipating shell are provided with a heat-conducting pouring sealant therebetween.

As a further improvement, the heat conducting main body is perpendicular to the positive and negative electrode directions of the cell module.

As a further improvement of the present invention, the heat conducting fins have at least two fins and are distributed around the heat conducting main body.

As a further improvement of the present invention, the heat conducting fins are perpendicular to the heat conducting body.

As a further improvement, the battery cell module has at least two, and is adjacent be equipped with the heat insulating board between the battery cell module.

As a further improvement, the heat dissipation shell includes upper cover, center and drain pan, the upper and lower both ends of center are equipped with the opening of the electric core module of packing into, upper cover, drain pan are installed respectively the upper and lower both ends of center, heat conduction fin with the center heat conduction is connected, be equipped with battery management system on the electric core module.

As a further improvement, establish at the fixed plate on the drain pan, be equipped with module clamping screw around the fixed plate, range upon range of from top to bottom in the electric core module, all positive poles of electric core module are all up, all negative poles of electric core module are all down, be equipped with module fixing hole around the electric core module, module clamping screw passes module fixing hole and with upper cover fixed connection.

As a further improvement, the electric core module includes the electric core monomer that the array was arranged, and is adjacent it has thermal-insulated filling to fill between the electric core monomer to glue.

The utility model has the advantages that: through the scheme, the heat dissipation efficiency of the battery pack is improved on the basis that the size of the battery pack is not increased.

Drawings

Fig. 1 is an exploded view of the battery pack with efficient heat dissipation of graphene sheets of the present invention.

Fig. 2 is a schematic perspective view of the battery pack with efficient heat dissipation of graphene sheets according to the present invention.

Fig. 3 is a schematic diagram of an electric core module of a battery pack with efficient heat dissipation of graphene sheets.

Fig. 4 is the utility model discloses a bottom schematic diagram of electric core module of battery package with high-efficient heat dissipation of graphite alkene piece.

Fig. 5 is an internal schematic view of the battery pack with efficient heat dissipation of graphene sheets according to the present invention.

Fig. 6 is an assembly schematic diagram of an electric core module of a battery pack with efficient heat dissipation of graphene sheets.

Fig. 7 is an internal schematic view of the battery pack with efficient heat dissipation of graphene sheets according to the present invention.

Fig. 8 is a schematic diagram of graphene sheets of a battery pack with efficient heat dissipation of graphene sheets according to the present invention.

Fig. 9 is an internal schematic view of the battery pack with efficient heat dissipation of graphene sheets according to the present invention.

Fig. 10 is a partially enlarged view of fig. 9.

Detailed Description

The present invention will be further described with reference to the following description and embodiments.

As shown in fig. 1 to 10, a battery pack with graphene sheets for efficient heat dissipation includes a heat dissipation housing 1 having an installation cavity, and a battery core module 2 and graphene sheets 5 installed in the installation cavity, all cathodes 21 of the battery core module 2 face downward, all anodes 22 face upward, and are bound in the same direction by using aluminum wires 28 welded in the same direction, and are collected by a bus aluminum bar 26, so that series connection is completed in one direction, and the turnover of the modules in production is reduced. Unlike conventional arrangements, the conventional arrangement has a positive terminal and a negative terminal in one direction.

The graphene sheet 5 includes a heat-conducting main body 51 and a heat-conducting fin 52 connected to the heat-conducting main body 51, all the cathodes 21 of the cell module 2 are connected to the heat-conducting main body 51 in a heat-conducting manner, and the heat-conducting fin 52 is connected to the heat-dissipating housing 1 in a heat-conducting manner.

And heat-conducting grease 71 is arranged between all the cathodes 21 of the cell module 2 and the heat-conducting main body 51 of the graphene sheet 5.

A heat-conducting pouring sealant 72 is arranged between the heat-conducting fins 52 of the graphene sheet 5 and the heat-radiating shell 1.

The heat conduction main body 5 is perpendicular to the positive and negative directions of the battery cell module 2, the battery cell module 2 is arranged up and down, and the heat conduction main body 51 of the heat conduction main body 5 is arranged horizontally.

The heat conducting fins 52 are at least two and are distributed around the heat conducting main body 51.

The heat conductive fins 52 are perpendicular to the heat conductive body 51.

The cell module 2 has two at least, and is adjacent be equipped with heat insulating board 6 between the cell module 2, heat insulating board 6 preferred is the glass fiber board.

The heat dissipation shell 1 comprises an upper cover 11, a middle frame 12 and a bottom shell 13, openings for installing the battery cell modules 2 are formed in the upper end and the lower end of the middle frame 12, the upper cover 11 and the bottom shell 13 are respectively installed at the upper end and the lower end of the middle frame 12, the heat conduction fins 52 are in heat conduction connection with the middle frame 12, and the battery cell modules 2 are provided with a battery management system 3, namely a BMS.

The middle frame 12 is preferably an aluminum middle frame.

Establish on the drain pan 13 at fixed plate 41, be equipped with module clamping screw 42 around fixed plate 41, electric core module 2 stacks from top to bottom, be equipped with module fixing through-hole 27 around electric core module 2, module clamping screw 42 pass module fixing through-hole 27 and with upper cover 11 fixed connection.

The electric core module includes electric core monomer 23, lower carriage 24 and upper bracket 25 that the array was arranged, and is adjacent it has thermal-insulated filling adhesive 29 to fill between the electric core monomer 23, preferably foaming filling adhesive, and the clearance uses foaming filling adhesive between electric core and the electric core, and the primary function is the heat diffusion that arouses when stopping electric core to catch a fire, slows down the speed of heat diffusion and reduces the flame of electric core burning, and secondly the effect is that the wholeness of increasing the module, shock resistance, anti extrusion performance, insulating, it is thermal-insulated, isolated air etc..

In this embodiment, preferably, three cell modules 2 are adopted, a graphene sheet 5 is arranged at the bottom of each module to dissipate heat, the graphene sheet 5 is arranged at the negative electrode 21 of the cell module 2, and the negative electrode 21 of the cell module 2 and the heat-conducting main body 51 of the graphene sheet 5 have a layer of heat-conducting grease 71, so that the heat of the cell module 2 is transferred to the graphene sheet 5 through the heat-conducting grease 71, and the graphene sheet 5 absorbs the heat and is transversely transferred to the heat-conducting potting adhesive 72 in the aluminum middle frame and finally dissipated through the aluminum middle frame.

As is well known, graphene is the highest material in thermal conductivity coefficient so far, and has very good thermal conductivity, namely 5300W/mK (single layer), and 5, the graphene sheet with extremely high transverse thermal conductivity is adopted in the structure, so that heat generated in the charging and discharging process of the battery pack is absorbed and dissipated at the highest speed, the service life of the battery pack is prolonged, and meanwhile, the risk of fire explosion caused by thermal runaway generated due to the fact that the heat cannot be dissipated in the battery pack is reduced.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a battery package with graphite alkene piece is high-efficient radiating which characterized in that: the battery cell module comprises a heat dissipation shell with an installation cavity, an electric core module and a graphene sheet, wherein the electric core module and the graphene sheet are installed in the installation cavity, all negative poles of the electric core module face to the same direction, the graphene sheet comprises a heat conduction main body and a heat conduction fin connected with the heat conduction main body, all negative poles of the electric core module are connected with the heat conduction main body in a heat conduction mode, the heat conduction fin is connected with the heat dissipation shell in a heat conduction mode, the electric core module comprises electric core monomers arranged in an array mode, and heat insulation filling glue is filled between the electric core monomers.

2. The battery pack with efficient heat dissipation of graphene sheets according to claim 1, wherein: and heat conduction grease is arranged between all cathodes of the battery cell module and the heat conduction main body of the graphene sheet.

3. The battery pack with efficient heat dissipation of graphene sheets according to claim 1, wherein: and a heat conduction pouring sealant is arranged between the heat conduction fins of the graphene sheet and the heat dissipation shell.

4. The battery pack with efficient heat dissipation of graphene sheets according to claim 1, wherein: the heat conduction main body is perpendicular to the positive and negative directions of the battery cell module.

5. The battery pack with efficient heat dissipation of graphene sheets according to claim 1, wherein: the heat conduction fins are at least two and are distributed on the periphery of the heat conduction main body.

6. The battery pack with efficient heat dissipation of graphene sheets according to claim 1, wherein: the battery cell module has two at least, and is adjacent be equipped with the heat insulating board between the battery cell module.

7. The battery pack with efficient heat dissipation of graphene sheets according to claim 6, wherein: the heat dissipation shell comprises an upper cover, a middle frame and a bottom shell, wherein openings for installing the battery cell modules are formed in the upper end and the lower end of the middle frame, the upper cover and the bottom shell are respectively installed at the upper end and the lower end of the middle frame, and the heat conduction fins are in heat conduction connection with the middle frame.

8. The battery pack with efficient heat dissipation of graphene sheets according to claim 7, wherein: establish on the drain pan at the fixed plate, be equipped with module fixing screw around the fixed plate, the electricity core module is range upon range of from top to bottom, all positive poles of electricity core module all face up, all negative poles of electricity core module all face down, be equipped with module fixing hole around the electricity core module, module fixing screw pass module fixing hole and with upper cover fixed connection.