CN212085085U

CN212085085U - Novel lithium battery cell structure

Info

Publication number: CN212085085U
Application number: CN202020744866.4U
Authority: CN
Inventors: 何光明; 罗祎
Original assignee: Sichuan Xianglilai Technology Co ltd
Current assignee: Sichuan Xianglilai Technology Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-04
Anticipated expiration: 2030-05-08

Abstract

The utility model discloses a novel lithium battery cell structure, which comprises a cell shell and a cell core group, wherein the cell core group is arranged in the cell shell, the cell shell comprises an outer shell, the inner wall of the outer shell is coated with a heat-conducting layer, the heat-conducting layer is made of a heat-conducting insulating material, and the outer surface of the outer shell is provided with heat-radiating fins; the electric core group comprises a plurality of electric cores, and a buffer layer is arranged between every two adjacent electric cores. The utility model discloses having add the one deck heat-conducting layer at the shell body inner wall of electricity core casing, can in time be with the heat effluvium that electric core produced, avoid electric core high temperature and impaired, set up the buffer layer simultaneously between the adjacent electric core of electricity core, it is impaired to have avoided electric core structure whole to receive electric core extrusion when assaulting.

Description

Novel lithium battery cell structure

Technical Field

The utility model relates to a lithium cell field specifically is a novel lithium cell electricity core structure.

Background

With the wide application of high-capacity lithium batteries in the fields of power automobiles, energy storage and the like, the structure and the assembly method of the batteries are more and more emphasized. The traditional battery is designed into a single-cell structure, and due to the fact that the thickness of the battery is large, the wettability of a pole piece and electrolyte is poor, the internal resistance is inconsistent, and premature deterioration of the battery is easily caused. Therefore, a plurality of cells are often used to form a cell pack to increase the energy thereof.

At present, the assembly of the battery core group adopts the mode that the periphery is directly wrapped by a sheet metal part after the battery core is contacted with the battery core, and the mode has the following two defects, namely, the heat dissipation effect is poor; and secondly, the electric cores are in direct contact with each other, almost no contact exists between the electric cores, and the electric cores are likely to have expansion deformation due to heating or to be damaged due to external impact force.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a novel lithium battery cell structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel lithium battery core structure comprises a core shell and a core group, wherein the core group is arranged in the core shell, the core shell comprises an outer shell, the inner wall of the outer shell is coated with a heat conduction layer, the heat conduction layer is made of a heat conduction insulating material, and the outer surface of the outer shell is provided with heat dissipation fins; the electric core group comprises a plurality of electric cores, and a buffer layer is arranged between every two adjacent electric cores.

Furthermore, the buffer layer is made of elastic materials.

Further, the thickness of the buffer layer is 0.5-1 mm.

Further, the length of the radiating fin is 1-5 cm.

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

the utility model discloses having add the one deck heat-conducting layer at the shell body inner wall of electricity core casing, can in time be with the heat effluvium that electric core produced, avoid electric core high temperature and impaired, set up the buffer layer simultaneously between the adjacent electric core of electricity core, it is impaired to have avoided electric core structure whole to receive electric core extrusion when assaulting.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a top view of the cell casing of the present invention;

FIG. 3 is a schematic view of the cell assembly of the present invention;

in the figure, 1-cell shell, 101-outer shell, 102-heat conducting layer, 2-cell group, 201-cell, 202-buffer layer.

Detailed Description

In order to clearly understand the technical features, objects and effects of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Examples

As shown in fig. 1, fig. 2 and fig. 3, a novel lithium battery cell structure comprises a cell shell 1 and a cell group 2, wherein the cell group 2 is installed in the cell shell 1, the cell shell 1 comprises an outer shell 101, the inner wall of the outer shell 101 is coated with a heat conducting layer 102, and the heat conducting layer is made of a heat conducting and insulating material, such as XK-F60, DENKA/BFG, KUNZE/KU-BG, and the like, and the outer surface of the outer shell 101 is provided with heat radiating fins 103; the battery cell group 2 is composed of a plurality of battery cells 201, and a buffer layer 202 is arranged between every two adjacent battery cells 201. The utility model discloses coating one deck heat-conducting layer 102 at the inner wall of shell 101, in the use, the electric core generates heat, and this heat-conducting layer 102 absorbs the heat, transmits to shell 101 to through the radiating fin 103 on shell 101 in time dispels the heat, avoid the electric core group high temperature; set up buffer layer 202 between the adjacent electric core of electric core and have the usage in two aspects, electric core structure is whole when receiving the impact, owing to set up buffer layer 202 between adjacent electric core 201, avoid the damage that the extrusion between adjacent electric core 201 caused, in addition, owing to in the use, electric core can generate heat, electric core probably has slight inflation deformation, and because the setting of buffer layer 202, avoided because the extrusion damage to adjacent electric core that electric core inflation deformation leads to, consequently, this application has both realized the timely heat dissipation of battery, electric core extrusion damage has been avoided again.

Further, the buffer layer 202 is made of an elastic material, such as silicon rubber, fluororubber, and other common elastic materials.

Further, the thickness of the buffer layer 202 is 0.5-1 mm. The thickness of the buffer layer 202 is set to 05-1mm, so that the situation that the number of the battery cells 201 is too small due to too large thickness can be avoided on the premise that the buffer effect is guaranteed.

Further, the length of the radiating fin is 1-5 cm. Because the whole occupied volume of the battery is limited in the using process, and the current development trend is that the battery is smaller and smaller, the occupied space of any part needs to be considered, the length of the radiating fin is set to be 1-5cm, and the battery volume is not excessively increased under the condition of ensuring good radiating.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is intended to cover all modifications and equivalents of the claims and the scope of the present invention.

Claims

1. A novel lithium battery cell structure is characterized by comprising a cell shell and a cell core group, wherein the cell core group is arranged in the cell shell, the cell shell comprises an outer shell, the inner wall of the outer shell is coated with a heat conduction layer, and the outer surface of the outer shell is provided with heat dissipation fins; the electric core group comprises a plurality of electric cores, and a buffer layer is arranged between every two adjacent electric cores.

2. The novel lithium battery cell structure of claim 1, wherein the buffer layer is made of an elastic material.

3. The novel lithium battery cell structure of claim 1 or 2, wherein the buffer layer has a thickness of 0.5-1 mm.

4. The novel lithium battery cell structure of claim 1 or 2, wherein the length of the heat dissipation fin is 1-5 cm.

5. The novel lithium battery cell structure of claim 1, wherein the heat conducting layer is made of a heat conducting and insulating material.