CN222915012U - Lithium ion battery casing - Google Patents

Abstract

The utility model discloses a lithium ion battery shell in the technical field of lithium ion batteries, which comprises a lower shell, wherein a heat dissipation through hole is fixedly formed in the top surface of the upper shell, a heat dissipation fan is fixedly arranged at the inner side of the heat dissipation through hole, an upper heat conduction silica gel gasket is fixedly arranged below the inner side of the upper shell, the upper heat conduction silica gel gasket and a heat absorption copper plate are in glued connection through a heat conduction silica gel layer, a radiating fin is fixedly connected to the top of the heat absorption copper plate, the heat on the surface of the upper heat conduction silica gel gasket can be conducted through the heat absorption copper plate, the heat conduction rate between the heat absorption copper plate and the upper heat conduction silica gel gasket is improved through the arrangement of the heat conduction silica gel layer, the heat on the surface of the heat absorption copper plate can be absorbed through the radiating fin, and finally the heat on the surface of the radiating fin is discharged to the outside from the inside of the heat dissipation through hole through the heat dissipation fan.

Description

Lithium ion battery shell

Technical Field

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery shell.

Background

A lithium ion battery is a secondary battery (rechargeable battery) that operates mainly by means of lithium ions moving between a positive electrode and a negative electrode. In the charge and discharge process, li+ is inserted and removed back and forth between the two electrodes, li+ is removed from the positive electrode and inserted into the negative electrode through the electrolyte in the charge process, the negative electrode is in a lithium-rich state, and in the discharge process, the opposite is realized, at present, the lithium ion battery shell adopts a single cavity, and the shell thickness of the lithium ion battery is larger than or equal to 45mm, and the capacity of the lithium ion battery is relatively high.

Compared with traditional lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries and the like, the traditional lithium ion batteries have higher energy density and larger charge-discharge multiplying power, so that the heat is serious in the working process, particularly in high-temperature summer, the heat generation is more severe, the capacity and the service life of the batteries are obviously influenced, and even the safety accidents of electric equipment are caused, and therefore, the lithium ion battery shell is provided.

Disclosure of utility model

The utility model aims to provide a lithium ion battery shell to solve the problems that the existing lithium ion battery is serious in heat generation and needs to dissipate heat in the background technology.

In order to achieve the above purpose, the lithium ion battery shell comprises a lower shell, wherein an upper shell is arranged above the lower shell, a heat dissipation through hole is formed in the top end of the upper shell, a dust screen is arranged on the inner side of the heat dissipation through hole, a heat dissipation fan is arranged on the inner side of the heat dissipation through hole, a mounting groove is formed in the inner side of the lower shell, a lower heat conduction silica gel gasket is arranged at the bottom of the lower shell, an upper heat conduction silica gel gasket is arranged below the inner side of the upper shell, a heat absorption copper plate is arranged above the upper heat conduction silica gel gasket, a heat conduction silicone grease layer is arranged at the bottom of the heat absorption copper plate, heat dissipation fins are arranged at the top of the heat absorption copper plate, upper fixing blocks are arranged on two sides of the upper shell, an upper threaded hole is formed in the surface of the upper fixing blocks, a lower threaded hole is formed in the two sides of the lower fixing blocks, and a vent hole is formed in the bottom of the lower shell.

Preferably, a heat dissipation through hole is fixedly formed in the surface of the top end of the upper shell, a dust screen is fixedly arranged at the outer end of the heat dissipation through hole, and a heat dissipation fan is fixedly arranged at the inner side of the heat dissipation through hole.

Preferably, the bottom of the inner side of the lower shell is provided with a plurality of mounting grooves in a sliding manner, the bottom surface of the lower shell is provided with a lower heat conduction silica gel gasket in a fitting manner, and the lower heat conduction silica gel gasket is fixedly arranged below the inner side of the upper shell.

Preferably, the upper heat-conducting silica gel gasket is connected with the heat-absorbing copper plate in a gluing way through a heat-conducting silicone grease layer, and the top of the heat-absorbing copper plate is fixedly connected with a radiating fin.

Preferably, the two sides of the upper shell are fixedly provided with upper fixing blocks, and the surface of each upper fixing block is fixedly provided with an upper threaded hole.

Preferably, the two sides of the lower shell are fixedly provided with lower fixing blocks, the surface of each lower fixing block is fixedly provided with a lower threaded hole, and the bottom of the lower shell is fixedly provided with a plurality of ventilation holes.

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

1. The heat on the surface of the upper heat-conducting silica gel gasket can be conducted through the heat-absorbing copper plate, the heat conduction rate between the heat-absorbing copper plate and the upper heat-conducting silica gel gasket is improved through the heat-conducting silica gel layer, the heat on the surface of the heat-absorbing copper plate can be absorbed through the radiating fin, and finally the heat on the surface of the radiating fin is discharged to the outside from the inside of the radiating through hole through the radiating fan.

2. The heat that is difficult for giving off in top, bottom of lithium ion battery can be made to carry out outside conduction through last heat conduction silica gel gasket, the lower heat conduction silica gel gasket that is equipped with, has increased radiating efficiency, goes up heat conduction silica gel gasket, the peculiar high electrical insulation of lower heat conduction silica gel gasket self and puncture resistance can have fine protection to the group battery simultaneously.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

fig. 3 is a schematic view of the bottom structure of the present utility model.

1, A lower shell; 2, an upper shell, 3, a heat dissipation through hole, 4, a dust screen, 5, a heat dissipation fan, 6, a mounting groove, 7, a lower heat conduction silica gel gasket, 8, an upper heat conduction silica gel gasket, 9, a heat absorption copper plate, 10, a heat conduction silicone grease layer, 11, a heat dissipation plate, 12, an upper fixing block, 13, an upper threaded hole, 14, a lower fixing block, 15, a lower threaded hole, 16 and a vent hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model provides a technical scheme that a lithium ion battery shell comprises a lower shell 1, an upper shell 2 is arranged above the lower shell 1, a heat dissipation through hole 3 is arranged at the top end of the upper shell 2, a dust screen 4 is arranged on the inner side of the heat dissipation through hole 3, a heat dissipation fan 5 is arranged on the inner side of the heat dissipation through hole 3, a mounting groove 6 is arranged on the inner side of the lower shell 1, a lower heat conduction silica gel gasket 7 is arranged at the bottom of the lower shell 1, an upper heat conduction silica gel gasket 8 is arranged below the inner side of the upper shell 2, a heat absorption copper plate 9 is arranged above the upper heat conduction silica gel gasket 8, a heat conduction silicone grease layer 10 is arranged at the bottom of the heat absorption copper plate 9, heat dissipation fins 11 are arranged at the top of the heat absorption copper plate 9, upper fixing blocks 12 are arranged on two sides of the upper shell 2, an upper threaded hole 13 is arranged on the surface of the upper fixing block 12, a lower fixing block 14 is arranged on two sides of the lower shell 1, a lower threaded hole 15 is arranged on the surface of the lower fixing block 14, and a vent 16 is arranged at the bottom of the lower shell 1.

Specifically, the top fixed surface of last casing 2 has seted up heat dissipation through-hole 3, heat dissipation through-hole 3's outer fixed mounting has dust screen 4, heat dissipation fan 5 is installed to heat dissipation through-hole 3's inboard fixed mounting, a plurality of mounting grooves 6 have been seted up to the inboard bottom of lower casing 1, lower heat conduction silica gel gasket 7 is installed in the laminating of lower casing 1's bottom surface, go up heat conduction silica gel gasket 8 is installed to the inboard below fixed mounting of casing 2, go up heat conduction silica gel gasket 8 and carry out the veneer through heat conduction silicone grease layer 10 between the heat absorption copper 9 and connect, the top fixedly connected with fin 11 of heat absorption copper 9, the both sides fixed mounting of last casing 2 has last fixed block 12, the fixed surface of going up fixed block 12 has seted up threaded hole 13, the both sides fixed mounting of casing 1 has down fixed block 14 down, the fixed surface of fixed block 14 has seted up down threaded hole 15 down, a plurality of ventilation holes 16 have been seted up to the fixed bottom of casing 1 down.

In this embodiment, locate the inside of mounting groove 6 with lithium ion battery is vertical, make the top and the bottom of lithium ion battery contact with respectively between last heat conduction silica gel gasket 8, down heat conduction silica gel gasket 7 is connected, let the top of lithium ion battery, the bottom is difficult for radiating heat through last heat conduction silica gel gasket 8, down heat conduction silica gel gasket 7 is to the outside heat dissipation, can conduct the heat on last heat conduction silica gel gasket 8 surface through heat absorption copper plate 9, the setting of heat conduction silicone grease layer 10 has improved the heat conduction rate between heat absorption copper plate 9 and the last heat conduction silica gel gasket 8, can absorb the heat on heat absorption copper plate 9 surface through fin 11, finally discharge the heat on fin 11 surface to the external world from the inside of heat dissipation through the fan 5, heat conduction silica gel gasket 7 can dispel the heat on surface to the surface of casing 1 down, the radiating efficiency of heat conduction silica gel gasket 7 down has been improved through the ventilation hole 16 that is equipped with simultaneously, the inside air flow's of this casing speed has been increased, and through last heat conduction silica gel gasket 8, the peculiar high electrical insulation of lower silica gel gasket 7 self and prevent piercing performance can have fine heat conduction to the group to protect.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The lithium ion battery shell comprises a lower shell body (1), and is characterized in that an upper shell body (2) is arranged above the lower shell body (1), a heat dissipation through hole (3) is formed in the top of the upper shell body (2), a dust screen (4) is arranged on the inner side of the heat dissipation through hole (3), a heat dissipation fan (5) is arranged on the inner side of the heat dissipation through hole (3), a mounting groove (6) is formed in the inner side of the lower shell body (1), a lower heat conduction silica gel gasket (7) is arranged at the bottom of the lower shell body (1), an upper heat conduction silica gel gasket (8) is arranged below the inner side of the upper shell body (2), a heat absorption copper plate (9) is arranged above the upper heat conduction silica gel gasket (8), a heat absorption copper plate (10) is arranged at the bottom of the heat absorption copper plate (9), an upper fixing block (12) is arranged on two sides of the upper fixing block (12), an upper threaded hole (13) is formed in the surface of the upper fixing block (12), a lower fixing block (14) is arranged on the two sides of the lower shell body (1), and a vent hole (16) is formed in the bottom of the lower fixing block (14).

2. The lithium ion battery shell according to claim 1, wherein a heat dissipation through hole (3) is fixedly formed in the top surface of the upper shell (2), a dust screen (4) is fixedly arranged at the outer end of the heat dissipation through hole (3), and a heat dissipation fan (5) is fixedly arranged at the inner side of the heat dissipation through hole (3).

3. The lithium ion battery shell according to claim 1, wherein a plurality of mounting grooves (6) are formed in the inner side bottom of the lower shell (1) in a sliding mode, a lower heat conduction silica gel gasket (7) is mounted on the bottom surface of the lower shell (1) in a fitting mode, and an upper heat conduction silica gel gasket (8) is fixedly mounted below the inner side of the upper shell (2).

4. The lithium ion battery shell according to claim 1, wherein the upper heat-conducting silica gel gasket (8) is in glued connection with the heat-absorbing copper plate (9) through a heat-conducting silicone grease layer (10), and a radiating fin (11) is fixedly connected to the top of the heat-absorbing copper plate (9).

5. The lithium ion battery shell according to claim 1, wherein the two sides of the upper shell (2) are fixedly provided with upper fixing blocks (12), and the surface of each upper fixing block (12) is fixedly provided with an upper threaded hole (13).

6. The lithium ion battery shell according to claim 1, wherein lower fixing blocks (14) are fixedly arranged on two sides of the lower shell (1), lower threaded holes (15) are fixedly formed in the surface of the lower fixing blocks (14), and a plurality of ventilation holes (16) are fixedly formed in the bottom of the lower shell (1).