CN220172220U - Liquid cooling assembly, heat dissipation box and integrated energy storage system of battery module - Google Patents

Abstract

The embodiment of the utility model provides a liquid cooling assembly of a battery module, a heat dissipation box and a container energy storage system. The liquid cooling assembly comprises a liquid cooling frame plate and a crumple plate; the liquid cooling frame plate is provided with a liquid cooling cavity, a first current collecting cavity, a second current collecting cavity and a placement cavity for placing the battery module, wherein the liquid cooling cavity, the first current collecting cavity and the second current collecting cavity are communicated, the liquid cooling cavity extends along a first direction, and the first current collecting cavity and the second current collecting cavity are respectively arranged at two ends of the liquid cooling cavity; the crumple plate is arranged in the liquid cooling cavity, and is connected between the inner plate and the outer plate of the liquid cooling frame plate so as to divide the liquid cooling cavity into a plurality of runner channels extending along the first direction. Therefore, the liquid cooling assembly provided by the embodiment of the utility model has the advantages of good cooling effect and high safety performance.

Description

Liquid cooling assembly, heat dissipation box and integrated energy storage system of battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a liquid cooling assembly of a battery module, a heat dissipation box with the liquid cooling assembly and a container energy storage system.

Background

The integrated energy storage system generally comprises a box body and a plurality of battery modules arranged in the box body, wherein each battery module comprises a shell and an electric core positioned in the shell. The more the battery cells are integrated, the worse the general heat dissipation effect is, and the service life and the safety of the battery cells are affected by the heat dissipation of the battery modules. In order to improve the radiating effect of the battery module, a radiating component is often arranged on the shell, and the radiating effect of the liquid cooling component is superior to the air cooling radiating effect.

In the related art, in order to improve the cooling uniformity of the liquid cooling assembly, a partition plate is often arranged in the liquid cooling plate of the liquid cooling assembly so as to separate the liquid cooling cavity on the liquid cooling plate into a plurality of liquid cooling channels. But the baffle that sets up can promote the structural strength of liquid cooling board, when the planking body received the striking, because of baffle intensity is great relatively, most impact can pass through the baffle and transmit the inner panel and lead to the fact the inner panel deformation, and then extrudees battery module, easily causes battery module thermal runaway's risk.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. For this reason, the embodiment of the utility model provides a liquid cooling assembly of a battery module. The liquid cooling assembly has the advantages of good cooling effect and high safety performance.

The embodiment of the utility model also provides a radiating box of the battery module.

The embodiment of the utility model also provides a packaging energy storage system.

The liquid cooling assembly of the battery module comprises a liquid cooling frame plate and a crumple plate.

The liquid cooling frame plate is provided with a liquid cooling cavity, a first current collecting cavity, a second current collecting cavity and a placement cavity for placing the battery module, wherein the liquid cooling cavity extends along a first direction, and the first current collecting cavity and the second current collecting cavity are respectively communicated with two ends of the liquid cooling cavity; the crumple plate is arranged in the liquid cooling cavity, and is connected between the inner plate and the outer plate of the liquid cooling frame plate so as to divide the liquid cooling cavity into a plurality of runner channels extending along the first direction.

According to the liquid cooling assembly of the battery module, the liquid cooling cavity, the first current collecting cavity and the second current collecting cavity are arranged in the liquid cooling frame plate, and the crumple plate is arranged in the liquid cooling cavity, so that the liquid cooling cavity can be divided into a plurality of runner channels extending along the first direction by the crumple plate, and the divided runner channels not only improve the uniformity of distribution of liquid cooling agent, but also reduce the impact force transferred from the outer plate to the inner plate. Therefore, the deformation of the inner plate is reduced, and the extrusion force applied to the battery module is reduced, so that the battery module arranged in the liquid cooling assembly is protected. Therefore, the risk of thermal runaway of the battery module is reduced by the liquid cooling assembly.

Therefore, the liquid cooling assembly of the battery module has the advantages of good cooling effect and high safety performance.

In some embodiments, the crush plates have a plurality, the plurality of crush plates being disposed between the inner plate and the outer plate of the liquid cooled frame plate at intervals along a second direction, the second direction being disposed perpendicular to the first direction.

In some embodiments, the spacing between adjacent two of the crush plates is 10cm to 20cm.

In some embodiments, the crush plate has a thickness of 0.8-1.2mm.

In some embodiments, the liquid cooling frame plate comprises a rectangular outer frame body and a rectangular inner frame body, the rectangular inner frame body is internally provided with the placement cavity, the rectangular inner frame body is arranged in the outer frame body so as to form a liquid cooling cavity, a first current collecting cavity and a second current collecting cavity, and the crumple plate is arranged on a part of the liquid cooling cavity, which is positioned between the rectangular outer frame body and the rectangular inner frame body.

In some embodiments, the outer frame has a thickness of 1.5mm to 2.5mm.

The heat dissipation box of the battery module comprises an outer box body and the liquid cooling assembly of the battery module, wherein the liquid cooling assembly is arranged in the outer box body.

In some embodiments, the heat dissipation case of the battery module further includes a first collecting pipe and a second collecting pipe, the liquid cooling assembly has a plurality, and the plurality of liquid cooling assemblies are connected in parallel to each of the first collecting pipe and the second collecting pipe, and the first collecting pipe, the first collecting cavity, the liquid cooling cavity, the second collecting cavity and the second collecting pipe are sequentially connected so as to form a cooling channel.

In some embodiments, each of the first collecting pipeline and the second collecting pipeline comprises a collecting pipe and a main pipe which are communicated, the liquid cooling assembly is provided with a plurality of liquid cooling assemblies, the plurality of liquid cooling assemblies of the battery modules are sequentially arranged along the second direction, a liquid inlet of the first collecting cavity is communicated with the collecting pipe of the first collecting pipeline, and a liquid outlet of the second collecting cavity is communicated with the collecting pipe of the second collecting pipe.

The integrated energy storage system comprises a battery module and any one of the battery module heat dissipation boxes, wherein the battery module is arranged in the battery module heat dissipation box.

In some embodiments, the battery module has adjacent first heat dissipation surface and second heat dissipation surface, the surface area of first heat dissipation surface is greater than the surface area of second heat dissipation surface, first heat dissipation surface with the liquid cooling deckle has the laminating of one side of liquid cooling cavity.

Drawings

Fig. 1 is a perspective view illustrating an assembly of a heat dissipation case and a battery module according to an embodiment of the present utility model.

Fig. 2 is another perspective view illustrating the assembly of the heat dissipation case and the battery module according to the embodiment of the present utility model.

Fig. 3 is a further perspective view of the assembly of the heat dissipation case and the battery module according to the embodiment of the present utility model.

Fig. 4 is a front view of an assembly of a heat dissipation case and a battery module according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view taken along line A-A in fig. 4.

Fig. 6 is a top view illustrating an assembly of a liquid cooling module and a battery module according to an embodiment of the present utility model.

Fig. 7 is a cross-sectional view taken along line A-A of fig. 6.

Fig. 8 is a perspective view of an assembly of a liquid cooling module and a battery module according to an embodiment of the present utility model, with a portion of the battery module omitted.

Reference numerals:

a heat radiation box 1000;

a liquid cooling assembly 100; a battery module 200; an outer case 300;

a liquid cooling frame plate 1;

a rectangular outer frame body 11; a first outer plate 111; a second outer plate 112; a top plate body 113; a base plate 114;

a rectangular inner frame body 12; a first rectangular inner frame body 121; a second rectangular inner frame 122; an upper current collecting plate 123; a lower current collecting plate 124;

a liquid cooling chamber 101; a first manifold 102; a second manifold body 103; a placement cavity 104;

a crush plate 2;

a first header line 31; a second header line 32; a header 301; a main pipe 302.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The liquid cooling assembly 100 of the battery module and the heat dissipating case 1000 and the integrated energy storage system having the same according to the embodiment of the present utility model are described below with reference to fig. 1 to 8.

The liquid cooling assembly 100 of the battery module according to the embodiment of the present utility model includes a liquid cooling frame plate 1 and a crumple plate 2.

The liquid cooling frame plate 1 has a liquid cooling cavity 101, a first manifold 102, a second manifold 103, and a placement cavity 104 for placing the battery module 200, wherein the liquid cooling cavity 101, the first manifold 102, and the second manifold 103 are communicated, the liquid cooling cavity 101 extends in a first direction (e.g., up-down direction shown in fig. 1), and the first manifold 102 and the second manifold 103 are disposed at both ends of the liquid cooling cavity 101, respectively; the crumple plates 2 are disposed within the liquid cooling chamber 101, and the crumple plates 2 are connected between the inner and outer plates of the liquid cooling frame plate 1 so as to divide the liquid cooling chamber 101 into a plurality of flow passage channels extending in the first direction. It will be appreciated that the liquid cooling frame plate 1 has a hollow cavity therein.

According to the liquid cooling assembly 100 of the battery module, the liquid cooling cavity 101, the first manifold 102 and the second manifold 103 are arranged in the liquid cooling frame plate 1, and the crumple plate 2 is arranged in the liquid cooling cavity 101, so that the liquid cooling cavity 101 can be divided into a plurality of runner channels extending along the first direction by the crumple plate 2, and the divided runner channels not only improve the uniformity of distribution of liquid cooling agent, but also reduce the impact force transferred from the outer plate to the inner plate. Therefore, the deformation of the inner plate is reduced, and thus, the pressing force applied to the battery module 200 is reduced, thereby protecting the battery module 200 disposed in the liquid cooling assembly 100. Thereby, the liquid cooling assembly 100 reduces the risk of thermal runaway of the battery module 200.

Therefore, the liquid cooling assembly 100 of the battery module according to the embodiment of the utility model has the advantages of good cooling effect and high safety performance.

Specifically, the battery module 200 formed by a plurality of electric cells is disposed in the placement cavity 104, and the first manifold 102 and the second manifold 103 are disposed at the upper and lower ends of the liquid cooling cavity 101, respectively.

As shown in fig. 5 and 7, the crush plates 2 have a plurality of crush plates 2 provided between the inner and outer plates of the liquid-cooled frame plate 1 at intervals in a second direction (front-rear direction shown in fig. 1) which is provided perpendicular to the first direction. It will be appreciated that a plurality of runner channels are also provided accordingly. For example, the number of crush plates 2 is N, and the number of typical flow channels is n+1.

According to the liquid cooling assembly 100 of the battery module, the plurality of the crumple plates 2 are arranged, so that the structural strength of the liquid cooling frame plate 1 can be optimized, and the uniformity of the distribution of cooling liquid can be further improved. Thus, the liquid cooling assembly 100 has the advantage of optimizing the structural strength and cooling effect of the liquid cooling frame plate 1.

The interval between two adjacent crumple plates 2 is 10cm-20cm. Therefore, the liquid cooling assembly 100 of the battery module of the embodiment of the utility model reasonably sets the interval between the crumple plates 2 within the range of 10cm-20cm, thereby further improving the cooling effect of the liquid cooling assembly 100 and reducing the extrusion force applied to the battery module 200 when the liquid cooling assembly 100 is impacted. Thus, the liquid cooling assembly 100 improves the safety performance of the battery module 200.

Alternatively, the spacing between two adjacent crush plates 2 can be 10cm, 12cm, 13cm, 14cm, 15cm, 15.5cm, 16cm, 17cm, 18cm, 19cm, or 20cm.

The thickness of the crumple plate 2 is 0.8-1.2mm. Therefore, the liquid cooling assembly 100 of the battery module of the embodiment of the utility model sets the thickness of the crumple plate 2 to be 0.8-1.2mm, and the crumple plate 2 with the thickness has certain structural strength to form a relatively stable flow channel, and can also play a role in supporting the inner plate and the outer plate of the liquid cooling frame plate 1 to a certain extent; in addition, the liquid cooling assembly 100 also has the advantage of good collapsing effect.

As shown in fig. 5, 7 and 8, the liquid-cooled frame plate 1 includes a rectangular outer frame body 11 and a rectangular inner frame body 12, a placement chamber 104 is formed in the rectangular inner frame body 12, the rectangular inner frame body 12 is disposed in the outer frame body so as to form a liquid-cooled chamber 101, a first manifold 102 and a second manifold 103, and the crumple plate 2 is disposed in a portion of the liquid-cooled chamber 101 between the rectangular outer frame body 11 and the rectangular inner frame body 12. The inside-outside direction in fig. 4 is referred to as the inside-outside direction of the liquid cooling module 100.

The liquid cooling assembly 100 of the battery module according to the embodiment of the utility model forms the liquid cooling cavity 101, the first manifold 102 and the second manifold 103 by passing between the rectangular outer frame body 11 and the rectangular inner frame body 12 of the liquid cooling frame plate 1, and does not need to additionally provide a manifold to collect the liquid cooling agents in the plurality of flow channel channels. But is realized by a structure in which the rectangular inner frame body 12 is fitted inside the rectangular outer frame body 11. Further, the liquid cooling module 100 of this structure has an advantage of simple structure. In addition, the liquid cooling assembly 100 surrounds the installation cavity 104 on all four sides so as to form a protection surface for the battery module 200. Thus, the liquid cooling assembly 100 has the advantages of good cooling effect and high safety performance.

Specifically, the rectangular outer frame 11 includes a first outer plate 111, a second outer plate 112, a top plate 113, and a bottom plate 114 that are joined end to end, the first outer plate 111 and the second outer plate 112 being disposed opposite to each other in a third direction (front-rear direction shown in fig. 1), the top plate 113 and the bottom plate 114 being disposed opposite to each other in the first direction, and the rectangular inner frame 12 includes a first rectangular inner frame 12112, a second rectangular inner frame 12212, an upper current collecting plate 123, and a lower current collecting plate 124 that are joined end to end. The first outer plate 111 and the first rectangular inner frame 12112 enclose a first liquid cooling cavity 101, the second outer plate 112 and the second rectangular inner frame 12212 enclose a second liquid cooling cavity 101, the upper collecting plate 123 and the top plate 113 form a first collecting cavity 102, the lower collecting plate 124 and the bottom plate 114 form a second collecting cavity 103, and the third direction is perpendicular to the first direction and the second direction.

Further, the liquid cooling frame plate 1 is a liquid cooling frame plate 1 piece formed by extrusion molding of aluminum alloy. Thus, the liquid cooling assembly 100 has the advantages of high structural strength and convenience in processing.

Further, the top plate body 113 and the bottom plate body 114 are fixed to the first outer plate body 111 and the second outer plate body 112 by a plurality of bolts. And can be sealed by arranging sealant at the joint.

The thickness of the outer frame body is 1.5mm-2.5mm. Therefore, the outer frame body with the thickness has the advantage of high structural strength; meanwhile, the problem that the cooling effect is reduced due to the fact that the thickness of the outer frame body is too large and the space of the runner channel is occupied is avoided.

The heat dissipation case 1000 of the battery module according to the embodiment of the present utility model includes an outer case 300 and the liquid cooling assembly 100 of the battery module according to any one of the above-described embodiments, the liquid cooling assembly 100 being disposed in the outer case 300.

Therefore, the heat dissipation case 1000 of the battery module according to the embodiment of the utility model has the advantages of good cooling effect and high safety performance.

As shown in fig. 1 to 4, the heat dissipation case 1000 of the battery module according to the embodiment of the present utility model further includes a first collecting pipe 31 and a second collecting pipe 32, the liquid cooling assembly 100 has a plurality, the plurality of liquid cooling assemblies 100 are connected in parallel to each of the first collecting pipe 31 and the second collecting pipe 32, and the first collecting pipe 31, the first collecting chamber 102, the liquid cooling chamber 101, the second collecting chamber 103 and the second collecting pipe 32 are sequentially connected to form a cooling passage.

According to the heat dissipation box 1000 of the battery module, a plurality of liquid cooling assemblies 100 are arranged, and the plurality of liquid cooling assemblies 100 conduct further flow collection on cooling liquid through the first flow collection pipeline 31 and the second flow collection pipeline 32, so that the heat dissipation box is convenient to butt against an external refrigerant source, and the design of related pipelines is reduced. Thereby, the heat radiation case 1000 of the battery module simplifies the advantage of the connection pipe with the refrigerant source.

As shown in fig. 1 to 4, each of the first collecting pipe 31 and the second collecting pipe 32 includes a header 301 and a main pipe 302 which are connected, the liquid cooling assembly 100 has a plurality of liquid cooling assemblies 100 of a plurality of battery modules sequentially arranged in the second direction, the liquid inlet of the first collecting chamber 102 is connected to the header 301 of the first collecting pipe 31, and the liquid outlet of the second collecting chamber 103 is connected to the header 301 of the second collecting pipe 32.

The heat dissipation case 1000 of the battery module according to the embodiment of the utility model includes the header 301 and the main pipe 302 that are connected to each other by the first header 31 and the second header 32, and is connected to a plurality of headers located on the same side by the header 301 (the liquid inlet of the first header 102 is connected to the header 301 of the first header 31, and the liquid outlet of the second header 103 is connected to the header 301 of the second header 32). Therefore, the heat dissipation case 1000 of the battery module of the embodiment of the utility model has the advantage of simple structure.

Alternatively, the first manifold 102 communicates with the corresponding manifold 301 via a connecting tube, which may be threaded with the manifold 301.

The integrated energy storage system of the embodiment of the utility model comprises a battery module 200 and a heat dissipation case 1000 of the battery module according to any one of the above, wherein the battery module 200 is arranged in the heat dissipation case 1000 of the battery module.

Therefore, the integrated energy storage system provided by the embodiment of the utility model has the advantages of good cooling effect and high safety performance.

As shown in fig. 1 to 4, the battery module 200 has adjacent first and second heat dissipation surfaces, the surface area of the first heat dissipation surface is larger than that of the second heat dissipation surface, and the first heat dissipation surface is attached to the side of the liquid cooling frame plate 1 having the liquid cooling cavity 101.

According to the integrated energy storage system provided by the embodiment of the utility model, the heat exchange efficiency of the battery module 200 is improved by attaching the larger heat dissipation surface of the battery module 200 to one side of the liquid cooling frame plate 1 with the liquid cooling cavity 101. Therefore, the integrated energy storage system has the advantage of good heat exchange effect.

Alternatively, the placement cavity 104 of each liquid cooling assembly 100 may have a plurality of electric cells stacked in the placement cavity 104 along the first direction, and the plurality of electric cells form the battery module 200.

Specifically, the left and right sides of the battery module 200 are respectively provided with a first liquid cooling cavity 101 and a second liquid cooling cavity 101, the bottom and the top of the battery module 200 are respectively provided with a first manifold 102 and a second manifold 103, and the cooling liquid enters the first manifold 102 from the first manifold 31 into each flow channel of the liquid cooling cavity 101 and is discharged from the second manifold 32 after being collected in the second manifold 103.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A liquid cooling assembly of a battery module, comprising:

the liquid cooling frame plate is provided with a liquid cooling cavity, a first current collecting cavity, a second current collecting cavity and a placement cavity for placing the battery module, wherein the liquid cooling cavity extends along a first direction, and the first current collecting cavity and the second current collecting cavity are respectively communicated with two ends of the liquid cooling cavity;

the crumple plate is arranged in the liquid cooling cavity, and is connected between the inner plate and the outer plate of the liquid cooling frame plate so as to divide the liquid cooling cavity into a plurality of runner channels extending along the first direction.

2. The liquid cooling assembly of claim 1, wherein the crush plates are provided in plurality, the plurality of crush plates being disposed between the inner plate and the outer plate of the liquid cooling frame plate at intervals along a second direction, the second direction being disposed perpendicular to the first direction.

3. The liquid cooling assembly of claim 2, wherein the spacing between two adjacent crush plates is 10cm to 20cm;

and/or the thickness of the crumple plate is 0.8-1.2mm.

4. The liquid cooling assembly of the battery module according to claim 1, wherein the liquid cooling frame plate includes a rectangular outer frame body and a rectangular inner frame body in which the seating chamber is formed, the rectangular inner frame body being disposed in the outer frame body so as to form the liquid cooling chamber, the first manifold body, and the second manifold body, the crumple plate being disposed at a portion of the liquid cooling chamber between the rectangular outer frame body and the rectangular inner frame body.

5. The liquid cooling module of claim 4, wherein the outer frame has a thickness of 1.5mm to 2.5mm.

6. A heat dissipation case of a battery module, comprising an outer case and the liquid cooling assembly of the battery module according to any one of claims 1 to 5, the liquid cooling assembly being disposed in the outer case.

7. The heat dissipating case of a battery module of claim 6, further comprising a first manifold and a second manifold, wherein the plurality of liquid cooling assemblies are in parallel communication with each of the first manifold and the second manifold, wherein the first manifold, the liquid cooling chamber, the second manifold, and the second manifold are in sequential communication so as to form a cooling channel.

8. The heat dissipating box of the battery module according to claim 7, wherein each of the first collecting pipe and the second collecting pipe comprises a header pipe and a main pipe which are communicated, the liquid cooling assembly is provided with a plurality of liquid cooling assemblies, the plurality of liquid cooling assemblies of the battery module are sequentially arranged along the second direction, the liquid inlet of the first collecting cavity is communicated with the header pipe of the first collecting pipe, and the liquid outlet of the second collecting cavity is communicated with the header pipe of the second header pipe.

9. A packaged energy storage system comprising a battery module and a heat sink for the battery module according to any one of claims 6-8, the battery module being disposed within the heat sink for the battery module.

10. The packaged energy storage system of claim 9 wherein said battery module has adjacent first and second cooling surfaces, said first cooling surface having a surface area greater than a surface area of said second cooling surface, said first cooling surface being in registry with a side of said liquid cooled frame plate having said liquid cooled cavity.