CN219393553U

CN219393553U - Plastic shell of lithium battery

Info

Publication number: CN219393553U
Application number: CN202320422266.XU
Authority: CN
Inventors: 赵光辉; 李桂臣; 朱涛
Original assignee: Shandong Fengyuan Lithium Ion Technology Co ltd
Current assignee: Shandong Fengyuan Lithium Ion Technology Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-21
Anticipated expiration: 2033-03-08

Abstract

The utility model belongs to the technical field of lithium batteries, and particularly relates to a plastic shell of a lithium battery, which comprises a shell and a top cover, wherein the top cover is movably connected to the top of the shell, wiring terminals are symmetrically arranged on the surface of the top cover, a limit groove is formed on the surface of the shell, a fixed frame is arranged in an inner cavity of the limit groove, radiating fins are annularly arranged on the surface of the fixed frame, the radiating fins and the fixed frame are integrally formed, a plug groove is formed on the top of the inner wall of the shell, a plug frame is integrally formed on the lower surface of the top cover, the plug frame and the plug groove are mutually plugged, and embedded grooves are symmetrically formed on two sides of the surface of the shell; the utility model discloses on the heat-conducting plate passes through the spliced pole with heat transfer to fixed frame, can accelerate the heat release to fixed frame through radiating fin, radiating fin tip and electric socket inner wall looks butt simultaneously support through radiating fin, can make casing surface and battery holder inner wall surface not laminate, can effectively promote the radiating effect to the lithium cell.

Description

Plastic shell of lithium battery

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a plastic shell of a lithium battery.

Background

The lithium metal battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses nonaqueous electrolyte solution, and is widely applied to electric bicycle, electric automobile and electric tools, and the lithium battery pack is generally composed of a plurality of 18650 lithium battery cells, wherein the 18650 lithium battery cells are fixed through a plastic shell.

When the existing lithium battery plastic shell is installed in the battery seat, the lithium battery shells are mutually attached to each other between the lithium battery shells and the battery seat, heat can be released when the lithium battery is charged and discharged, the heat can not be released quickly when collected in the shells, the explosion phenomenon of the lithium battery can be caused, the danger in use is greatly increased, and the lithium battery plastic shell is provided for solving the problems.

Disclosure of Invention

Object of the utility model

In order to solve the technical problems in the background art, the utility model provides the lithium battery plastic shell, the heat conducting plate transfers heat to the fixed frame through the connecting column, the heat release on the fixed frame can be accelerated through the radiating fins, meanwhile, the end parts of the radiating fins are abutted against the inner wall of the electric socket, the shell surface is not attached to the inner wall surface of the battery seat through the radiating fins, and the radiating effect on the lithium battery can be effectively improved.

(II) technical scheme

In order to solve the technical problems, the utility model provides a lithium battery plastic shell, which comprises a shell and a top cover, wherein the top cover is movably connected to the top of the shell, wiring terminals are symmetrically arranged on the surface of the top cover, a limiting groove is formed in the surface of the shell, a fixing frame is arranged in an inner cavity of the limiting groove, radiating fins are arranged on the surface of the fixing frame in a ring mode, and the radiating fins and the fixing frame are integrally formed.

Preferably, the top of the inner wall of the shell is provided with a plugging groove, the upper surface of the top cover is integrally formed with a plugging frame, and the plugging frame and the plugging groove are mutually plugged.

Preferably, embedded grooves are symmetrically formed in two sides of the surface of the shell, and the inner cavity of each embedded groove is provided with a penetrating groove in a penetrating mode.

Preferably, the inner cavity of the embedded groove is provided with a heat conducting plate, and the surface of the heat conducting plate is integrally formed with a connecting column.

Preferably, the connecting column is inserted in the through groove, and the end part of the connecting column is fixedly connected with the inner wall of the fixing frame.

Preferably, an insulating paper ring is adhered to the surface of the inner wall of the shell, and a clearance groove is formed in the position corresponding to the embedded groove on the surface of the insulating paper ring.

Preferably, a rubber pad is embedded on the lower surface of the shell, and an adhesive layer is adhered on the lower surface of the rubber pad.

The technical scheme of the utility model has the following beneficial technical effects:

1. according to the lithium battery pack, the shell can be sealed through the top cover, the lithium battery pack is connected through the wiring terminal, electric equipment can be conveniently connected with the lithium battery pack through the wiring terminal, the heat conducting plate is attached to the surface of the lithium battery pack, heat can be released when the lithium battery pack is charged and discharged, the heat is transferred to the heat conducting plate, the heat conducting plate transfers the heat to the fixing frame through the connecting column, the fixing frame is embedded in the limiting groove on the surface of the shell, the surface of the fixing frame is annularly provided with the radiating fins, the heat release on the fixing frame can be accelerated through the radiating fins, meanwhile, the end parts of the radiating fins are abutted against the inner wall of the electric socket, the surface of the shell is not attached to the inner wall surface of the battery seat through the radiating fins, and the radiating effect on the lithium battery can be effectively improved.

2. According to the lithium battery, the rubber pad on the bottom surface of the shell is connected with the bottom of the inner cavity of the battery seat through the adhesive layer, so that the stability of the shell can be improved, the shaking phenomenon of the shell in the battery seat during use is avoided, and the vibration transmitted to the shell can be absorbed through the rubber pad, so that the lithium battery can work more stably.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic diagram of an exploded construction of the present utility model;

fig. 4 is a schematic view of a housing structure of the present utility model.

Reference numerals:

1. a housing; 2. a top cover; 3. a connection terminal; 4. an insulating paper ring; 5. a groove is embedded; 6. a through groove; 7. a limit groove; 8. a heat conductive plate; 9. a connecting column; 10. a fixed frame; 11. a heat radiation fin; 12. a rubber pad; 13. an adhesive layer.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

As shown in fig. 1-4, the plastic shell of the lithium battery provided by the utility model comprises a shell 1 and a top cover 2, wherein the top cover 2 is movably connected to the top of the shell 1, wiring terminals 3 are symmetrically arranged on the surface of the top cover 2, a limiting groove 7 is formed in the surface of the shell 1, a fixing frame 10 is arranged in an inner cavity of the limiting groove 7, radiating fins 11 are annularly arranged on the surface of the fixing frame 10, and the radiating fins 11 and the fixing frame 10 are integrally formed.

It should be noted that, can seal casing 1 through top cap 2, be connected with the lithium cell group through binding post 3, can make things convenient for the consumer to be connected with the lithium cell group through binding post 3, heat conduction board 8 is in the same place with the laminating of lithium cell group surface, the lithium cell group can release the heat when charging and discharging, heat transfer is to on the heat conduction board 8, heat conduction board 8 passes through spliced pole 9 with the heat transfer and fixes on the frame 10, fixed frame 10 inlays and establishes in the spacing groove 7 on casing 1 surface, fixed frame 10 surface ring is equipped with fin 11, can accelerate the heat release to fixed frame 10 through fin 11, fin 11 tip and electric socket inner wall looks butt support simultaneously, support through fin 11, can make casing 1 surface and battery holder inner wall surface non-laminating, can effectively promote the radiating effect to the lithium cell.

As shown in fig. 3, a plugging slot is formed at the top of the inner wall of the housing 1, a plugging frame is integrally formed below the top cover 2, and the plugging frame and the plugging slot are plugged with each other.

It should be noted that, the top cover 2 can be fast fixed by mutually plugging the plugging frame and the plugging slot.

As shown in fig. 4, the two sides of the surface of the housing 1 are symmetrically provided with embedded grooves 5, the inner cavity of each embedded groove 5 is provided with a through groove 6 in a penetrating manner, the inner cavity of each embedded groove 5 is provided with a heat-conducting plate 8, the surface of each heat-conducting plate 8 is integrally formed with a connecting column 9, the connecting columns 9 are inserted into the through grooves 6, and the end parts of the connecting columns 9 are fixedly connected with the inner wall of the fixing frame 10.

The heat conducting plate 8 can be embedded through the embedding groove 5, and the connecting column 9 is inserted into the penetrating groove 6 and connected with the fixing frame 10, so that heat in the inner cavity of the shell 1 can be transferred outwards.

As shown in fig. 2, an insulating paper ring 4 is adhered to the inner wall surface of the housing 1, and a clearance groove is formed in the position corresponding to the embedded groove 5 on the surface of the insulating paper ring 4.

It should be noted that, through insulating paper circle 4 can play insulating effect, on avoiding lithium cell group to take place the electric leakage when transmitting the heat conduction board 8 with the electric current, security when can promote the use.

As shown in fig. 3, a rubber pad 12 is embedded in the lower surface of the housing 1, and an adhesive layer 13 is adhered to the lower surface of the rubber pad 12.

It should be noted that, rubber pad 12 on the bottom surface of casing 1 is connected with the bottom of the inner cavity of the battery holder through adhesive layer 13, so that stability of casing 1 can be improved, shaking phenomenon of casing 1 in the battery holder during use is avoided, and vibration transmitted to casing 1 can be absorbed through rubber pad 12, so that the lithium battery can work more stably.

The working principle and the using flow of the utility model are as follows: lithium cell group is placed at casing 1 inner chamber, insulating paper circle 4 is established to casing 1 inner chamber wall surface, can play insulating group usefulness through insulating paper circle 4, on avoiding lithium cell group to take place electric leakage to heat conduction board 8, the security when can promoting the use, top cap 2 bottom surface is pegged graft each other through the spliced groove at spliced frame and casing 1 inner chamber top, can fix top cap 2, can seal casing 1 through top cap 2, be connected with lithium cell group through binding post 3, can make things convenient for the consumer to be connected with lithium cell group through binding post 3, heat conduction board 8 is in the same place with lithium cell group surface laminating, lithium cell group can release heat when charging and discharging, heat transfer is to on the heat conduction board 8, heat conduction board 8 passes through spliced pole 9 and transmits on the fixed frame 10, fixed frame 10 inlays and establishes in the spacing groove 7 on casing 1 surface, the fixed frame 10 surface is encircleed and is equipped with fin 11, can accelerate the heat release to on the fixed frame 10, fin 11 tip and electric socket inner wall butt simultaneously, can support through fin 11, can make casing 1 surface and battery inner wall laminating and battery holder 3, can not make the electric equipment be convenient for the lithium cell group be connected with lithium cell group battery group surface, can release heat to the heat conduction board 8, can be more stable when the battery 1 is connected with the battery inner chamber 1 through the inner chamber 12, can be used to the battery base 1, and the vibration pad is stable when the vibration pad is taken place to the battery 1, the vibration pad is connected to the battery 1, can be used to the battery 1, and the vibration pad is more stable, the bottom can be connected to the battery 1, and can be used to the battery 1, and can be connected to the bottom at the bottom surface and can be used to the bottom 1.

It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims or the equivalents of such scope and boundary.

Claims

1. The utility model provides a lithium battery plastic housing, includes casing (1) and top cap (2), top cap (2) swing joint is at casing (1) top, its characterized in that, top cap (2) surface symmetry is equipped with binding post (3), spacing groove (7) have been seted up on casing (1) surface, spacing groove (7) inner chamber is equipped with fixed frame (10), fixed frame (10) surface ring is equipped with fin (11), fin (11) and fixed frame (10) integrated into one piece.

2. The plastic shell of the lithium battery according to claim 1, wherein a plugging groove is formed in the top of the inner wall of the shell (1), a plugging frame is integrally formed on the lower surface of the top cover (2), and the plugging frame and the plugging groove are mutually plugged.

3. The plastic shell of the lithium battery according to claim 2, wherein embedded grooves (5) are symmetrically formed on two sides of the surface of the shell (1), and penetrating grooves (6) are formed in the inner cavity of the embedded grooves (5) in a penetrating mode.

4. A plastic lithium battery shell according to claim 3, wherein the inner cavity of the embedded groove (5) is provided with a heat conducting plate (8), and the surface of the heat conducting plate (8) is integrally formed with a connecting column (9).

5. The plastic shell of the lithium battery according to claim 4, wherein the connecting column (9) is inserted into the through groove (6), and the end part of the connecting column (9) is fixedly connected with the inner wall of the fixing frame (10).

6. The plastic shell of the lithium battery according to claim 5, wherein an insulating paper ring (4) is adhered to the inner wall surface of the shell (1), and a clearance groove is formed in the position corresponding to the embedding groove (5) on the surface of the insulating paper ring (4).

7. The plastic shell of the lithium battery according to claim 1, wherein a rubber pad (12) is embedded on the lower surface of the shell (1), and an adhesive layer (13) is adhered on the lower surface of the rubber pad (12).