CN212695225U

CN212695225U - Thermal management structure of battery module of electric automobile

Info

Publication number: CN212695225U
Application number: CN202021779042.7U
Authority: CN
Inventors: 王钲涛; 蒙祥书; 王剑; 孟祥金; 戴凯诚
Original assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Current assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-03-12
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to a heat management structure of electric automobile battery module, battery module includes a plurality of electric core subassemblies, wherein, the global lid of electric core subassembly is equipped with heat conduction shell, a set of side periphery that electric core subassembly is relative is provided with the pcm intermediate layer, the pcm intermediate layer sets up the periphery of keeping away from electric core subassembly at heat conduction shell, be provided with the blotter between pcm intermediate layer and the adjacent heat conduction shell, the other set of side peripheral heat conduction shell that electric core subassembly is relative contacts with the pcm intermediate layer of both sides each other, the pcm intermediate layer is hollow structure, the hollow structure intussuseption is filled with phase change material; the pcm interlayer, the cushion pad and the heat conducting shell are sequentially arranged in a close attaching mode to form a close attaching whole, so that the pcm interlayer, the cushion pad and the heat conducting shell can be always kept in an extrusion attaching state under the working condition of the electric automobile, and the heat conducting efficiency of the phase-change material is ensured; the electricity core module is lived in the parcel of pcm intermediate layer, and balanced module bulk temperature guarantees the uniformity of module heat conduction in-process heat conduction, reduces the electric core difference in temperature, is favorable to delaying electric core life.

Description

Thermal management structure of battery module of electric automobile

Technical Field

The utility model relates to a battery technology field especially relates to electric automobile battery module's thermal management structure.

Background

The heat conduction mode of the battery system of the electric automobile on the market mostly adopts traditional electrical equipment to build the heat source, and through the mode of temperature monitoring, start the heat source when the monitoring temperature reaches certain amount, release or absorb the heat, maintain the battery at a healthy operating temperature, because the influence of heat source rigidity, lead to the heat conduction of group battery inhomogeneous, cause the electric core difference in temperature, influence the life of product. Meanwhile, the working environment of the electric automobile is necessarily affected by vibration, and the normal contact between a heat source and the battery cell is very easily affected.

In the heat conduction system of real-time monitoring electric core temperature and work, the heat source of transform temperature very easily arouses the condensation phenomenon in the twinkling of an eye, influences the incasement environment, probably leads to the embroidery of incasement components and parts to be turbid to scrap, and the long-time overcurrent of pencil generates heat the damage of back insulating layer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat management structure of electric automobile battery module has solved the problem of the electric core difference in temperature that the abnormal contact of heat source and electric core caused among the current battery module.

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

the utility model provides a heat management structure of electric automobile battery module, the battery module includes a plurality of electric core subassemblies, wherein, electric core subassembly's global lid is equipped with the heat conduction shell, a set of side periphery that electric core subassembly is relative is provided with the pcm intermediate layer, the pcm intermediate layer sets up the heat conduction shell is kept away from electric core subassembly's one side, the pcm intermediate layer is with adjacent be provided with the blotter between the heat conduction shell, another group side periphery that electric core subassembly is relative heat conduction shell and both sides the pcm intermediate layer contacts each other, the pcm intermediate layer is hollow structure, the hollow structure intussuseption is filled with phase change material.

Preferably, the shell of the pcm interlayer and the heat conducting shell are both made of metal materials with good heat conducting performance.

Preferably, the surface of the cushion pad has a certain tackiness.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a heat management structure of electric automobile battery module, the battery module has a plurality of electric core subassemblies, heat management structure sets up and is used for the heat transfer of electric core subassembly between a plurality of electric core subassemblies, heat management structure is including setting up the heat conduction shell in the global of electric core subassembly, the relative side periphery of heat conduction shell is provided with the pcm intermediate layer, be provided with the blotter between pcm intermediate layer and the adjacent heat conduction shell, another relative side of heat conduction shell extends to both sides and contacts with the pcm intermediate layer of both sides, the pcm intermediate layer, the blotter is hugged closely with the heat conduction shell in order and is placed, constitute the whole of closely laminating, guarantee under the electric automobile operating mode, also can make the three keep extrusion laminating state all the time, guarantee phase change material's heat conduction efficiency; the electricity core module is lived in the parcel of pcm intermediate layer, and balanced module bulk temperature guarantees the uniformity of module heat conduction in-process heat conduction, reduces the electric core difference in temperature, is favorable to delaying electric core life.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is an internal cross-sectional view of a preferred embodiment of the invention.

Wherein the reference numerals are as follows:

1. a housing; 2. an upper cover; 3. a thermally conductive shell; 4. an electric core assembly, 5, a pcm interlayer; 6. a cushion pad.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments 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 belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the embodiment of the utility model comprises a battery module and a protection frame, the battery module comprises a plurality of cell assemblies 4, the cell assemblies 4 are located in the range limited by the protection frame, the cell assemblies 4 are protected by the protection frame in an all-dimensional manner, the protection frame further comprises a heat management structure, and the protection frame comprises a shell 1 and an upper cover 2.

The heat management structure comprises a heat conduction shell 3 covered on the periphery of an electric core assembly 4, bolt holes are formed in the heat conduction shell 3, screws are inserted into the bolt holes and used for fixing the heat conduction shell on the side face of the electric core assembly 4, pcm interlayers 5 are arranged on the left side face and the right side face of the electric core assembly 4, buffering cushions 6 are arranged between the pcm interlayers 5 and the adjacent heat conduction shell 3, the buffering cushions 6 are generally made of silica gel, the silica gel has certain viscosity and elasticity, the buffering cushions 5 are stuck on the one hand, the disturbance of the electric automobile is prevented, the electric automobile is guaranteed to be under different working conditions, the heat conduction shell 3, the buffering cushions 6 and the pcm interlayers 5 can be kept in an extrusion laminating state all the time, and the heat management efficiency of the electric. On the other hand, elasticity can give certain buffering, prevent to exert oneself violently and lead to the rupture of pcm intermediate layer 5, heat conduction shell 3 of the both sides face in front and back of electric core subassembly 4 extends to both sides, contact with the pcm intermediate layer 5 that sets up at the both ends about electric core subassembly 4, pcm intermediate layer 5 is hollow box-like structure, pcm intermediate layer 5 center has been full of phase change material, this phase change material generally is liquid, the material of shell and the heat conduction shell 3 of pcm intermediate layer 5 is the metal material that heat conductivility is good, generally can select the aluminum product of sexual valence relatively high for use,

during the specific use, the heat that electric core subassembly 4 during operation produced is transferred to the phase change energy storage material of leading in the pcm intermediate layer 5 by heat conduction shell 3, and phase change energy storage material changes the state after the heat absorption and is restricted in the encapsulation space and does not take place to shift, realizes good cooling effect, at this in-process, because the heat is absorbed and can't form the gathering, so greatly reduced the thermal runaway risk of battery. Under the low temperature environment, phase change material balances outside low temperature environment's influence through giving off latent heat to shorten group battery heat time, through the temperature point of adjusting phase transition process, reach to the battery module, last long term even to whole box internal environment temperature, the temperature monitoring of natural drive and regulation use the metal that this kind of heat conductivility of aluminium is good to make phase change material's intermediate layer, on the basis of guaranteeing the heat conduction efficiency, change and place, install, store and change.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an electric automobile battery module's thermal management structure, battery module includes a plurality of electric core subassembly (4), its characterized in that, the global lid of electric core subassembly (4) is equipped with heat conduction shell (3), a set of side periphery that electric core subassembly (4) are relative is provided with pcm intermediate layer (5), pcm intermediate layer (5) set up heat conduction shell (3) are kept away from the one side periphery of electric core subassembly (4), pcm intermediate layer (5) and adjacent be provided with blotter (6) between heat conduction shell (3), another group side periphery that electric core subassembly (4) are relative heat conduction shell (3) and both sides pcm intermediate layer (5) contact each other, pcm intermediate layer (5) are hollow structure, the hollow structure intussuseption is filled with phase change material.

2. The heat management structure of the battery module of the electric vehicle according to claim 1, characterized in that: the shell of the pcm interlayer (5) and the heat conducting shell (3) are made of aluminum materials.

3. The heat management structure of the battery module of the electric vehicle according to claim 1, characterized in that: the surface of the buffer pad (6) has certain viscosity.