CN212161908U

CN212161908U - Use cotton structure of safety protection bubble between electricity core

Info

Publication number: CN212161908U
Application number: CN202020887186.8U
Authority: CN
Inventors: 王方敏
Original assignee: Dongguan Taiya Electronic Technology Co ltd
Current assignee: Dongguan Taiya Electronic Technology Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-15
Anticipated expiration: 2030-05-22

Abstract

The utility model provides a use cotton structure of safety protection bubble between electric core, including the cotton layer of bubble that is used for the buffering, locate the thermal-insulated silica gel layer of the cotton two surfaces in layer of bubble, and locate the fine layer of glass of thermal-insulated silica gel layer surface. The glass fiber layer positioned on the outermost side has a fireproof and flame-retardant effect, flame spread of the battery cell is prevented, the heat insulation layer effectively isolates heat, overheating of the foam layer is avoided, the foam layer is used for buffering energy absorption and can absorb thickness tolerance during assembly to form a five-layer structure, the battery cell on any side is out of control, and the battery cell on any side is blocked by the two heat insulation silica gel layers and the two fireproof glass fiber layers, so that accidents can be effectively delayed; the foam layer is combined with the heat insulation silica gel layers and the glass fiber layers on the two sides in a laminated mode, and after different materials are interwoven, electric breakdown resistance is enhanced, tear resistance is enhanced, and safety is high.

Description

Use cotton structure of safety protection bubble between electricity core

Technical Field

The utility model relates to a cotton structure of bubble of buffering usefulness between power battery electricity core.

Background

With the development of the new energy automobile industry, the selection and design of materials in the new energy automobile develop towards multi-functionalization and integration, and meanwhile, with the increase of power of the power battery, the heat productivity of the battery is increased, and the safety requirement of the battery is higher and higher. The heat diffusion test standard of the Ministry of industry and belief, namely safety requirement of power storage batteries for electric vehicles, stipulates a battery pack or system heat diffusion test, and requires that after a battery monomer is out of control due to heat, a battery system does not catch fire or explode within 5 minutes, so that the safety protection of the battery core has important significance.

Generally, a plurality of battery cells in the power battery pack need to be provided with a buffer material therebetween to avoid thermal runaway caused by mutual collision of the battery cells, and the buffer material between the battery cells plays an important role in the safety of the battery. The buffer structure between current electric core adopts the bubble cotton of taking the gum or spouting the glue more, solves the problem of friction and collision between electric core above all, but this kind of buffer material structure has following shortcoming: 1. the foam is not fireproof, and when a certain cell is out of control due to heat, other cells are out of control in succession, so that serious accidents are caused due to combustion and explosion in a short time; 2. the foam is of a porous structure, so that the electrical isolation is poor, and the electrical breakdown is easy to occur; 3. the tearing resistance of foam is poor, the thickness of foam material used for buffering is usually thin, the foam is easy to damage due to friction or tearing between electric cores, the assembly is not easy, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a composite construction that buffering was used between higher power battery electricity core of security performance.

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

the utility model provides a use cotton structure of safety protection bubble between electric core, is located including the cotton layer of bubble that is used for the buffering the thermal-insulated silica gel layer of the cotton two surfaces in bubble, and locate the glass fibre layer of thermal-insulated silica gel layer surface.

Further, the thickness of the foam layer is 0.1-20 mm, the thickness of the heat insulation silica gel layer is 0.01-10 mm, and the thickness of the glass fiber layer is 0.01-2 mm.

Further, the thickness range of the foam layer is 2-20 mm, the thickness range of the heat insulation silica gel layer is 1-10 mm, the thickness range of the glass fiber layer is 0.2-2mm, the thickness of the foam layer is larger than that of the heat insulation silica gel layer, and the thickness of the heat insulation silica gel layer is larger than that of the glass fiber layer.

The beneficial effect of this scheme is: 1. the glass fiber layer positioned on the outermost side has a fireproof and flame-retardant effect, flame spread of the battery cell is prevented, the heat insulation layer effectively isolates heat, the foam cotton layer is prevented from being overheated and ignited, the foam cotton layer is used for buffering and energy absorption, thickness tolerance can be absorbed during assembly, a five-layer structure is formed, the battery cell on any side is out of control, two heat insulation silica gel layers and two fireproof glass fiber layers are arranged for blocking, and accidents can be effectively delayed; 2. the foam layer is combined with the heat insulation silica gel layers and the glass fiber layers on the two sides in a laminated mode, and after different materials are interwoven, electric breakdown resistance is enhanced, tear resistance is enhanced, and safety is high.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of the layered structure of the safety protection foam structure in the embodiment.

Detailed Description

The invention is further explained below with reference to the drawings:

refer to the cotton structure of safety protection bubble for between electric core that fig. 1 shows, including the cotton layer 1 of bubble that is used for the buffering, locate the thermal-insulated silica gel layer 2 of the two surfaces on the cotton layer 1 of bubble, and locate the fine layer 3 of glass of the surface on thermal-insulated silica gel layer 2.

The fine layer 3 of glass that is located the outside has the fire prevention flame retardant action, prevents the flame spread of electric core, and the heat is then effectively kept apart to the insulating layer, avoids steeping cotton layer 1 overheated to get on fire, and steep cotton layer 1 then is used for the buffering energy-absorbing, can absorb thickness tolerance again when the assembly, constitutes five layers of structures, and arbitrary side electric core is out of control, all has two-layer thermal-insulated silica gel layer 2 and the fine layer 3 of glass of two-layer fire prevention to block, can effectively delay the emergence of accident. The foam layer 1 is superposed and combined with the heat insulation silica gel layer 2 and the glass fiber layer 3 on two sides, and after different materials are interwoven, the electric breakdown resistance is enhanced, the tear resistance is enhanced, and the safety is higher.

In a preferred embodiment, the thickness of the foam layer 1 is 0.1-20 mm, the thickness of the heat insulation silica gel layer 2 is 0.01-10 mm, and the thickness of the glass fiber layer 3 is 0.01-2 mm.

The utility model provides a preferred embodiment, 1 thickness scope on the cotton layer of bubble is 2 ~ 20mm, the thickness scope on thermal-insulated silica gel layer 2 is 1 ~ 10mm, the thickness scope on the fine layer 3 of glass is 0.2-2mm, just 1 thickness on the cotton layer of bubble is greater than 2 thickness on thermal-insulated silica gel layer, and 2 thickness on thermal-insulated silica gel layer is greater than 3 thickness on the fine layer of glass. On the whole, 1 thickness on the cotton layer of bubble is the biggest, can guarantee the shock-absorbing capacity of material, and thermal-insulated silica gel layer 2's thickness is relative fine layer 3 of glass is thick, can not only reach better thermal-insulated effect, and the relative fine layer 3 of glass on thermal-insulated silica gel layer 2 is comparatively soft moreover, and fine layer 3 of glass is thinnest for the cotton structure of safe bubble both reaches the security performance requirement on the whole, can keep the flexibility again, accords with buffering energy-absorbing material requirement.

The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a use cotton structure of safety protection bubble between electric core, its characterized in that, including the cotton layer of bubble that is used for the buffering, locates the thermal-insulated silica gel layer of the cotton two surfaces in bubble layer, and locate the fine layer of glass of thermal-insulated silica gel layer surface.

2. The safety protection foam structure used between the battery cores according to claim 1, which is characterized in that: the thickness range of the foam layer is 0.1-20 mm, the thickness range of the heat insulation silica gel layer is 0.01-10 mm, and the thickness range of the glass fiber layer is 0.01-2 mm.

3. The safety protection foam structure for the battery cell of claim 2, wherein: the thickness range of the foam layer is 2-20 mm, the thickness range of the heat insulation silica gel layer is 1-10 mm, the thickness range of the glass fiber layer is 0.2-2mm, the thickness of the foam layer is larger than that of the heat insulation silica gel layer, and the thickness of the heat insulation silica gel layer is larger than that of the glass fiber layer.