CN216288655U

CN216288655U - High-temperature-resistant high-safety lithium battery core

Info

Publication number: CN216288655U
Application number: CN202122663960.4U
Authority: CN
Inventors: 刘传奇
Original assignee: Huainan Shengqi New Energy Technology Co ltd
Current assignee: Huainan Shengqi New Energy Technology Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-12
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a high-temperature-resistant high-safety lithium battery core, and relates to the technical field of lithium batteries. Including casing and electric core body, the top of casing is provided with electric core body, and electric core body's periphery has set gradually the insulating layer that the highland barley paper was made, the heat transfer layer that insulating heat-conducting layer and copper foil were made that the heat conduction silicon rubber material was made from outside-in, and the top of casing is provided with the apron, and the top of apron is provided with utmost point post, and the inner chamber top of casing is provided with the connection piece of connecting utmost point post and electric core body, and one side that electric core body was kept away from to insulating heat-conducting layer is provided with the heat conduction arch. This high temperature resistant high safety type lithium cell electricity core, insulating heat-conducting layer can transmit the heat transfer that electricity core body produced for the heat transfer layer, and the heat transfer layer transmits the heat for the heat conduction stick again, and the heat can be gathered fast in the setting of heat conduction stick, makes it transmit for the heat dissipation layer, and then can be quick for the heat dissipation of electricity core body.

Description

High-temperature-resistant high-safety lithium battery core

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a high-temperature-resistant high-safety lithium battery core.

Background

The lithium ion battery has the advantages of high energy density, high power density, more recycling times, long storage time and the like. Therefore, the battery is widely used in portable electronic devices such as mobile phones, digital video cameras, and portable computers, and has a wide application prospect in large and medium-sized electric devices such as electric vehicles and electric bicycles, and energy storage facilities.

Because lithium belongs to active chemical elements, when the ambient temperature is too high, the battery current is too large or the load power is too high, the safety accident is easily caused by local heat accumulation due to poor heat conduction of the internal structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-temperature-resistant high-safety lithium battery core, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high temperature resistant high safety type lithium cell electricity core, includes casing and electric core body, the top of casing is provided with electric core body, electric core body's periphery has set gradually insulating layer, the insulating heat-conducting layer that heat conduction silicon rubber material was made and the heat transfer layer that the copper foil was made from outside-in, the top of casing is provided with the apron, the top of apron is provided with utmost point post, and the inner chamber top of casing is provided with the connection piece of connecting utmost point post and electric core body.

Furthermore, one side of the insulating heat conduction layer, which is far away from the battery core body, is provided with a heat conduction bulge.

Furthermore, a corrosion-resistant layer made of polytetrafluoroethylene is arranged between the inner wall of the shell and the heat transfer layer.

Furthermore, heat dissipation holes are uniformly formed in the surface of the shell.

Further, be provided with the heat conduction stick that runs through corrosion resistant layer in the louvre, the heat conduction stick penetrates the inside on heat transfer layer, the material of heat conduction stick is carbon fiber material.

Furthermore, a heat dissipation layer for coating the heat conduction rod is arranged on the outer side of the shell, and the heat dissipation layer is made of nickel.

Compared with the prior art, the utility model provides a high-temperature-resistant high-safety lithium battery core, which has the following beneficial effects: this high temperature resistant high safety type lithium cell electricity core, insulating heat-conducting layer can transmit the heat transfer that electricity core body produced for the heat transfer layer, and the heat transfer layer transmits the heat for the heat conduction stick again, and the heat can be gathered fast in the setting of heat conduction stick, makes it transmit for the heat dissipation layer, and then can be quick for the heat dissipation of electricity core body.

Drawings

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

FIG. 2 is a schematic plan view of the present invention;

fig. 3 is an enlarged schematic view of the utility model at a.

In the figure: 1. a housing; 2. a cover plate; 3. a pole column; 4. a cell body; 5. connecting sheets; 6. an insulating layer; 7. an insulating heat-conducting layer; 8. a heat transfer layer; 9. a corrosion-resistant layer; 10. a heat conducting protrusion; 11. a heat conducting rod; 12. and a heat dissipation layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the utility model discloses a high-temperature-resistant high-safety lithium battery cell, which comprises a shell 1 and a cell body 4, wherein the cell body 4 is arranged at the top of the shell 1, an insulating layer 6 made of highland barley paper, an insulating heat-conducting layer 7 made of heat-conducting silicone rubber and a heat-conducting layer 8 made of copper foil are sequentially arranged on the periphery of the cell body 4 from outside to inside, a cover plate 2 is arranged at the top of the shell 1, a terminal 3 is arranged at the top of the cover plate 2, and a connecting sheet 5 for connecting the terminal 3 and the cell body 4 is arranged at the top of an inner cavity of the shell 1.

Specifically, a heat conducting protrusion 10 is arranged on one side of the insulating heat conducting layer 7, which is far away from the cell body 4.

In this embodiment, the heat transfer layer 8 is close to one side of insulating heat transfer layer 7 and is seted up the holding tank that holds heat conduction arch 10, can increase the area of contact between insulating heat transfer layer 7 and the heat transfer layer 8, and improves thermal transfer efficiency, also can play certain atress cushioning effect.

Specifically, a corrosion-resistant layer 9 made of polytetrafluoroethylene is arranged between the inner wall of the shell 1 and the heat transfer layer 8.

In this embodiment, the corrosion-resistant layer 9 has a corrosion-resistant effect, so as to prolong the service life of the cell body 4.

Specifically, the louvre has evenly been seted up on the surface of casing 1, is provided with the heat conduction stick 11 that runs through corrosion-resistant layer 9 in the louvre, heat conduction stick 11 penetrates the inside of heat transfer layer 8, heat conduction stick 11's material is the carbon fiber material.

In this embodiment, the design of this structure can be so that the heat on the heat transfer layer 8 is absorbed to the high efficiency of heat conduction stick 11 to the transmission gives the external world, and then high efficiency gives off the heat that electricity core body 4 produced.

Specifically, a heat dissipation layer 12 covering the heat conduction rod 11 is disposed on the outer side of the housing 1, and the heat dissipation layer 12 is made of nickel.

In this embodiment, the heat dissipation layer 12 coats the heat conduction rod 11, so that the problem of poor sealing performance of the shell 1 is avoided, and the heat dissipation layer 12 made of nickel can efficiently dissipate the heat absorbed by the heat conduction rod 11 and the shell 1.

When the battery is used, the battery core body 4 generates heat, the heat can be efficiently transmitted to the heat transfer layer 8 through the insulating heat conduction layer 7 and the heat conduction protrusions 10, and the heat conduction rods 11 penetrate through the shell 1 and extend into the heat transfer layer 8, so that the heat on the shell 1 and the heat transfer layer 8 can be efficiently gathered, and the heat dissipation layer 12 can efficiently dissipate heat.

To sum up, this high safe type lithium cell electricity core of high temperature resistant, insulating heat-conducting layer 7 can be with the heat transfer that electricity core body 4 produced for heat transfer layer 8, and heat transfer layer 8 gives heat conduction stick 11 with heat transfer again, and the heat can be gathered fast in the setting of heat conduction stick 11, makes it transmit for heat dissipation layer 12, and then can be quick for the heat dissipation of electricity core body.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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

1. The utility model provides a high temperature resistant high safe type lithium cell electricity core, includes casing (1) and electric core body (4), its characterized in that: the top of casing (1) is provided with electric core body (4), the periphery of electric core body (4) has set gradually insulating layer (6) that the highland barley paper was made, insulating heat-conducting layer (7) that heat conduction silicon rubber material was made and heat transfer layer (8) that the copper foil was made from outside-in, the top of casing (1) is provided with apron (2), the top of apron (2) is provided with utmost point post (3), and the inner chamber top of casing (1) is provided with connection piece (5) of connecting utmost point post (3) and electric core body (4).

2. The high-temperature-resistant high-safety lithium battery cell of claim 1, wherein: and a heat conduction bulge (10) is arranged on one side of the insulating heat conduction layer (7) far away from the battery core body (4).

3. The high-temperature-resistant high-safety lithium battery cell of claim 1, wherein: and a corrosion-resistant layer (9) made of polytetrafluoroethylene is arranged between the inner wall of the shell (1) and the heat transfer layer (8).

4. The high-temperature-resistant high-safety lithium battery cell of claim 1, wherein: the surface of the shell (1) is uniformly provided with heat dissipation holes.

5. The high-temperature-resistant high-safety lithium battery cell according to claim 4, wherein: be provided with in the louvre and run through heat conduction stick (11) on corrosion resistant layer (9), heat conduction stick (11) penetrate the inside on heat transfer layer (8), the material of heat conduction stick (11) is carbon fiber material.

6. The high-temperature-resistant high-safety lithium battery cell according to claim 5, wherein: the heat dissipation device is characterized in that a heat dissipation layer (12) covering the heat conduction rod (11) is arranged on the outer side of the shell (1), and the heat dissipation layer (12) is made of nickel.