CN209544564U - A kind of power battery module containing thermally conductive plastic structure - Google Patents

Abstract

The utility model relates to a power battery module with a heat-conducting adhesive structure, which includes an electric core and a heat dissipation aluminum plate, the heat dissipation aluminum plate is bonded to the surface of the electric core, and also includes a module arranged at the bottom of the power battery module and connected with the heat dissipation aluminum plate There is a gap between the insulating part, the module insulating part and the bottom of the cell; the module insulating part is provided with one or more glue filling flow holes, and the thermal conductive glue filled into the above gap through the filling flow holes forms a heat conductive glue filling structure. The utility model fills the heat-conducting glue into the gap between the heat-dissipating aluminum plate, the electric core and the module insulating part through the glue-filling flow hole. The thermally conductive adhesive directly exchanges heat with the external heat dissipation structure, which reduces the thermal resistance of the module's heat dissipation path, and at the same time improves the flatness and strength of the bottom of the module.

Description

A power battery module containing a thermally conductive adhesive structure

technical field

The utility model belongs to the field of spare parts of battery packs, in particular to a power battery module with a heat-conducting glue structure.

Background technique

With the development of the new energy industry, the application of electric vehicles is becoming more and more extensive. Due to the advantages of high energy density, small size and high power density of lithium-ion batteries, battery cells composed of lithium-ion batteries are more and more widely used in electric vehicles as energy storage devices. Correspondingly, the cruising range and battery stability of electric vehicles have attracted more and more attention. How to improve the cruising range, increase the energy density of batteries, and improve the safety of power batteries has become the key to the development of electric vehicles in the future.

The power battery module is the core of the electric vehicle energy system. The power battery module needs to have a high energy density so that the electric vehicle can effectively drive a longer distance. It must provide stable and effective power to avoid failures caused by single battery failure problems to ensure the safety and reliability of electric vehicles.

Currently used power battery modules, the bottom of the module is a heat-dissipating aluminum plate plus an insulating film structure. Due to the low strength of the heat-dissipating aluminum plate, the flatness of the bottom of the module is poor, and the rest of the position is air, and the heat dissipation area is relatively small.

Contents of the invention

The purpose of the utility model is to provide a power battery module with a heat-conducting adhesive structure, aiming to solve the technical problems of poor flatness of the bottom of the existing power battery module structure with an open bottom, poor strength of the bottom of the module, and poor thermal conductivity.

In order to solve the above problems, according to one aspect of the utility model, a power battery module with a heat-conducting adhesive structure is provided, including a battery cell and a heat dissipation aluminum plate, the heat dissipation aluminum plate is bonded to the surface of the battery core, and is also provided on the power battery module. There is a gap between the module insulation and the bottom of the cell; the module insulation is provided with one or more glue flow holes, which are filled into the air through the glue flow holes. The thermal conductive adhesive in the above gap forms a thermal conductive adhesive filling structure.

Furthermore, it includes two or two electric cores, the upper part of the heat dissipation aluminum plate is arranged between the surfaces of the two electric cores, the lower part of the heat dissipation aluminum plate is bent, and the bent part is connected to the module insulation part.

According to another aspect of the present invention, there is provided a tooling for filling a thermally conductive glue in a power battery module, including at least one glue groove with an open top that can accommodate the bottom of the power battery module.

In the battery module structure provided by the utility model, a glue filling flow hole is opened at the bottom of the module, and through the glue filling flow hole, the thermal conductive glue is filled into the gap between the heat dissipation aluminum plate, the battery core and the module insulation. The thermally conductive adhesive directly exchanges heat with the external heat dissipation structure, which reduces the thermal resistance of the module's heat dissipation path, and at the same time improves the flatness and strength of the bottom of the module.

Description of drawings

Fig. 1 is a schematic structural view of the power battery module of the present invention.

FIG. 2 is a partially enlarged view of FIG. 1 .

Figure 3 is a combination diagram of the module and glue filling tooling. .

Thermally conductive adhesive; 2-module insulation; 3-heat dissipation aluminum plate; 4-battery core, 5-glue flow hole, 6-glue groove.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 2, according to a typical embodiment of the present invention, a power battery module with a heat-conducting adhesive structure is provided, including a battery cell 4 and a heat-dissipating aluminum plate 3, and the surface of the heat-dissipating aluminum plate 3 and the battery cell 4 Fitting, also includes the module insulator 2 arranged at the bottom of the power battery module and connected to the heat dissipation aluminum plate 3, there is a gap between the module insulator 2 and the bottom of the battery cell 4; the module insulator 2 is provided with a or a plurality of glue filling flow holes 5, through which the thermal conductive glue 1 filled into the above-mentioned gap forms a heat conductive glue filling structure.

According to the above embodiment, by adding the glue filling flow hole 5 on the module insulation part 2 at the bottom of the module, the thermally conductive glue can enter the bottom of the module through the glue filling flow hole 5, and fill the space between the heat dissipation aluminum plate 3 and the battery cell 4 Clearance.

Referring to Figure 1, there is a gap between the battery cell 4 and the heat dissipation aluminum plate 3 after stacking. When the glue is not poured, the heat dissipation method of the battery cell 4 is that the heat of the battery cell is conducted to the heat dissipation aluminum plate 3, and the heat dissipation aluminum plate 3 guides the heat to the module insulation 2 , the module insulator 2 performs heat exchange with the external heat dissipation structure. After filling the thermally conductive adhesive 1, the heat of the battery core can be directly conducted to the thermally conductive adhesive 1, and the thermally conductive adhesive 1 directly exchanges heat with the external heat dissipation structure, which reduces the thermal resistance of the module's heat dissipation path and improves the thermal management efficiency of the module.

In addition, the integrity of the battery module is improved by encapsulating the thermally conductive adhesive at the bottom, the overall structural strength is enhanced, and the problems of poor flatness and poor strength at the bottom of the existing module are significantly improved.

As a preferred technical solution, it includes two or two electric cores 4 , the upper part of the heat dissipation aluminum plate 3 is arranged between the surfaces of the two electric cores 4 , the lower part of the heat dissipation aluminum plate 3 is bent and the bent part is connected to the module insulator 2 .

Another typical implementation of the utility model provides a tooling filled with thermally conductive glue in the power battery module. Referring to FIG. 3 , the tooling includes at least one glue tank with an open top that can accommodate the bottom of the power battery module.

With the help of the external glue filling tool, inject the thermally conductive glue into the glue groove 6 of the glue filling tool in advance, and then sink the power battery module with the glue filling flow hole 5 at the bottom into the glue solution, and wait until the glue solution is completely soaked, After initial curing, the product is taken out of the tooling, and the entire product manufacturing process is completed after the glue is completely cured at room temperature or high temperature, and the thermal conductive glue is filled into the gap between the heat dissipation aluminum plate 3 and the battery cell 4 .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. A power battery module containing a heat-conducting adhesive structure, including a battery cell and a heat-dissipating aluminum plate, and the heat-dissipating aluminum plate is bonded to the surface of the battery cell. Connected module insulation, there is a gap between the module insulation and the bottom of the cell; the module insulation is provided with one or more glue filling flow holes, and the thermal conductive glue filled into the above gaps through the glue flow holes Form a thermally conductive adhesive filled structure. 2. The power battery module with heat-conducting adhesive structure according to claim 1, characterized in that it includes two or more electric cells, the upper part of the heat-dissipating aluminum plate is arranged between the surfaces of the two electric cells, and the lower part of the heat-dissipating aluminum plate Bending and the bending part is connected with the module insulating part. 3. A tool for filling the power battery module with thermally conductive glue according to claim 1 or 2, characterized in that it comprises at least one glue groove with an open top that can accommodate the bottom of the power battery module.