CN218351549U

CN218351549U - Heat dissipation device and battery module

Info

Publication number: CN218351549U
Application number: CN202222444536.5U
Authority: CN
Inventors: 车伏龙; 袁金荣; 赖元华; 陈明胤; 聂鑫
Original assignee: Gree Electric Appliances Inc of Zhuhai; Guochuang Energy Internet Innovation Center Guangdong Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Guochuang Energy Internet Innovation Center Guangdong Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-20
Anticipated expiration: 2032-09-15

Abstract

The utility model provides a heat abstractor and battery module. The heat dissipation device comprises an air inlet shell, wherein an air inlet and a plurality of air outlets are formed in the air inlet shell; and an airflow channel communicated with the air inlet and all the air outlets is formed inside the air inlet shell. The utility model provides a heat abstractor and battery module, the air current that air intake got into carries out the water conservancy diversion through the airflow channel who sets up the flow area and reduce gradually, the velocity of flow that is favorable to reducing the air current is in order to increase pressure, thereby increase the wind pressure of air outlet department, increase the air-out effect of air outlet, simultaneously under airflow channel's guide, the air outlet that lies in furthest apart from the air intake also can have the appropriate amount air current, increase the air-out homogeneity of all air outlets, guarantee the radiating effect to battery module, and then guarantee battery module's reliability.

Description

Heat dissipation device and battery module

Technical Field

The utility model relates to a heat-dissipating equipment technical field, especially a heat abstractor and battery module.

Background

With the reduction of global conventional energy and the increasing global pollution, humans are actively looking for clean energy to improve our living environment. For the energy storage industry, how to use the high-efficient clean energy storage battery to store energy becomes the main research and development direction. The working temperature range of the lithium battery is more suitable to be 10-45 ℃, and when the actual working temperature exceeds the range, especially when the actual working temperature is lower, the lithium battery cannot be charged, so that the service life and the working performance of the lithium battery are seriously influenced. At present, air-conditioning air-cooling heat dissipation devices are mainly adopted in batteries used in container energy storage PACK. For the battery pack with a compact internal structure, the cooling mode is adopted, so that the phenomenon of inconsistent heat dissipation is easy to occur, a good heat dissipation effect cannot be achieved, and the reliability of the battery module is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the reliability of a battery module is influenced by poor heat dissipation efficiency of the battery module in the prior art, the heat dissipation device and the battery module are provided, wherein the heat dissipation device is used for improving the uniformity of air inlet so as to improve the heat dissipation efficiency.

A heat dissipation device, comprising:

the air inlet shell is provided with an air inlet and a plurality of air outlets, and all the air outlets are arranged in parallel along the direction far away from the air inlet;

the air inlet casing's inside form with the air intake with all the airflow channel of air outlet intercommunication, and along keeping away from in the direction of air intake, airflow channel's flow area reduces gradually.

The heat dissipation device comprises a flow guide structure, the flow guide structure is arranged in the air inlet shell, and the airflow channel is formed between the flow guide structure and the inner wall of the air inlet shell.

The air inlet casing has adjacent first curb plate and second curb plate, be provided with the air intake on the first curb plate, be provided with a plurality of air outlets on the second curb plate, just the water conservancy diversion structure with form between the second curb plate airflow channel.

And a wind shield is arranged between every two adjacent air outlets and arranged in the air flow channel, and an over-wind interval is formed between the wind shield and the flow guide structure.

The wind shield is arranged at the edge of the air outlet far away from the air inlet.

All the overfire air spaces are equal.

The plane of the flow guide structure and the plane of the second side plate form an included angle, and the included angle ranges from 3 degrees to 5 degrees.

And all the air outlets are arranged in parallel along the direction far away from the air inlet.

Along keeping away from the direction of air intake, the flow area of air outlet gradually increases.

And a preset interval is formed between every two adjacent air outlets, and all the preset intervals are equal.

The heat dissipation device further comprises heat dissipation fins, the air inlet shell is arranged at an air inlet of the preset structure, and the heat dissipation fins are arranged at an air outlet of the preset structure.

Airflow inlet is located predetermine the bottom of structure, airflow outlet is located predetermine the top of structure, the air inlet casing connect in predetermine the bottom of structure, radiating fin connect in predetermine the top of structure.

The shape of the end face, away from the preset structure, of the radiating fin is an arc, an elliptic arc or a parabola.

The middle part of the circular arc or the middle part of the elliptical arc or the middle part of the parabola is positioned at the airflow outlet.

The ratio range of the length of the circular arc to the radius of the circular arc is 1:1.1 to 1:1.4.

the angle range of the central angle corresponding to the circular arc is 40-60 degrees.

The number of the radiating fins is multiple, and all the radiating fins are arranged in parallel along the width direction of the airflow outlet.

A battery module comprises the heat dissipation device.

The battery module includes the shell, all of air inlet casing the air outlet all with the inside intercommunication of shell.

The battery module is characterized by further comprising a plurality of battery assemblies, wherein the battery assemblies are arranged in the shell in at least one layer, a cooling interval is formed between every two adjacent battery assemblies in the same layer, and the cooling intervals correspond to the air outlets one to one.

The utility model provides a heat abstractor and battery module, the air current that gets into to the air intake carries out the water conservancy diversion through the airflow channel who sets up the flow area that reduces gradually, the velocity of flow that is favorable to reducing the air current is in order to increase pressure, thereby increase the wind pressure of air outlet department, increase the air-out effect of air outlet, simultaneously under airflow channel's guide, it also can have appropriate amount air current to be located the air outlet farthest away from the air intake, increase the air-out homogeneity of all air outlets, guarantee the radiating effect to battery module, and then guarantee battery module's reliability.

Drawings

Fig. 1 is a schematic structural view of a heat dissipation device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of an air outlet direction of the heat dissipation device according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a battery module according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a battery module according to an embodiment of the present invention;

in the figure:

1. an air inlet housing; 11. a first side plate; 12. a second side plate; 13. an air inlet; 14. an air outlet; 2. a flow guide structure; 3. a wind deflector; 31. the air passing interval; 4. a heat dissipating fin; 5. a housing; 6. a battery pack is provided.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The heat sink shown in fig. 1 to 5 includes: the air inlet device comprises an air inlet shell 1, wherein an air inlet 13 and a plurality of air outlets 14 are arranged on the air inlet shell 1; the inside of air inlet casing 1 form with air intake 13 and all the airflow channel of air outlet 14 intercommunication, and along keeping away from in the direction of air intake 13, airflow channel's flow area reduces gradually. Air current that 13 got into of airflow channel through setting up the area of circulation that reduces gradually carries out the water conservancy diversion to the air current, be favorable to reducing the velocity of flow of air current in order to increase pressure, thereby increase the wind pressure of 14 departments of air outlet, increase the air-out effect of air outlet 14, simultaneously under airflow channel's guide, the air outlet 14 that is located farthest away from air inlet 13 also can have appropriate amount of air current, increase the air-out homogeneity of all air outlets 14, guarantee the radiating effect to battery module, and then guarantee battery module's reliability.

Specifically, the heat dissipation device comprises a flow guide structure 2, the flow guide structure 2 is arranged in the air inlet shell 1, and the air flow channel is formed between the flow guide structure 2 and the inner wall of the air inlet shell 1. The flow guide structure 2 can guide the airflow of the air inlet 13, and the purpose that the flow area of the airflow channel is gradually reduced is achieved by utilizing the inclination of the flow guide structure 2.

Preferably, the flow guide structure 2 is a flow guide plate, the side of the flow guide plate facing the air outlet 14 is a windward side, and the airflow flows under the flow guide effect of the windward side.

The air inlet casing 1 is provided with a first side plate 11 and a second side plate 12 which are adjacent to each other, an air inlet 13 is formed in the first side plate 11, a plurality of air outlets 14 are formed in the second side plate 12, and the airflow channel is formed between the flow guide structure 2 and the second side plate 12. The air current is by the air intake 13 inlet port on the first curb plate 11, and its flow direction is to flowing in the inside of air inlet casing 1, and the water conservancy diversion structure 2 leads the air current so that the air current is close to the direction of second curb plate 12 gradually to realize reducing flow area's purpose gradually. Preferably, the second curb plate is located the top of first curb plate 11, and the air current can climb when flowing on water conservancy diversion structure 2 to further reduce the air current velocity of flow and increase gas pressure, guarantee the air-out effect of air outlet.

Preferably, air inlet casing 1 is the cuboid structure, and the cuboid structure has first terminal surface and the second terminal surface along length direction, and the cuboid structure still has the first side that is located between first terminal surface and the second terminal surface, and first terminal surface constitutes first curb plate 11, and first side constitutes second curb plate 12, and all air outlets 14 all are located first side to the interval is arranged in the direction along first terminal surface to second terminal surface. At this time, the airflow enters the air inlet housing 1 from the air inlet 13 and flows under the action of the flow guide structure 2, when the airflow passes through the air outlet 14, a part of the airflow flows out from the air outlet 14, and the rest of the airflow continues to flow along the flow guide structure 2 until the air outlet 14 farthest from the air inlet 13 is reached, and all of the airflow is discharged.

Optionally, an included angle is formed between the plane of the flow guide structure 2 and the plane of the second side plate 12, and the included angle ranges from 3 ° to 5 °. When the angle of contained angle is too big, the thickness grow of air inlet casing 1 causes the heat abstractor and the applied volume increase of predetermineeing the structure of heat abstractor to the angle of climbing of air current is too big, is unfavorable for the air current to flow. When the angle of the included angle is too small, the climbing angle of the air flow is too small, the air outlet uniformity of the air outlet 14 cannot be guaranteed, meanwhile, the speed reduction of the air flow is not obvious, the pressure intensity is not obviously increased, and the air outlet effect is poor.

In one embodiment, all the air outlets 14 are arranged in parallel in a direction away from the air inlet 13.

In order to further improve the air outlet effect of each air outlet 14, a wind shield 3 is arranged between every two adjacent air outlets 14, the wind shield 3 is arranged inside the air flow channel, and an air passing space 31 is formed between the wind shield 3 and the flow guide structure 2. The wind shield 3 is used for guiding airflow, so that the air outlet quantity of each air outlet 14 is ensured, and the flow field can be separated. Most of the cool air will sink, and the air passing space 31 can keep the air flow to continue flowing along the diversion structure 2 to enter the air outlet 14 at the rear. Meanwhile, the air flow velocity can be further reduced by blocking the air flow by the air baffle 3, so that the pressure intensity is further increased, and the air pressure of the air outlet 14 is ensured.

Preferably, the wind deflector 3 is disposed at an edge of the air outlet 14 away from the air inlet 13. The wind shield 3 can guide the airflow to directly enter the air outlet 14 without generating the problems of vortex and the like between the air outlet 14 and the wind shield 3, thereby improving the air outlet effect.

Optionally, all of the overfire air gaps 31 are equal. The air flow blocked by each wind deflector 3 is basically the same, so that the air outlet quantity of each air outlet 14 is basically the same.

As an embodiment, the plane of the edges of all the wind deflectors 3 close to the air guiding structure 2 passes through the lowest end of the air inlet 13 and the edge of the air outlet 14 farthest from the air inlet 13, which is close to the air inlet 13, so as to define the size of all the wind deflectors 3, thereby achieving the best air outlet effect.

A preset distance is formed between every two adjacent air outlets 14, and the specific size of the preset distance can be determined according to actual needs.

Optionally, all the preset spacings are equal. Taking the example of applying the heat dissipation device to the battery module, the battery modules in the battery module are arranged in parallel, and the preset interval and the cooling interval between the battery modules are correspondingly arranged.

The heat dissipation device further comprises heat dissipation fins 4, the air inlet shell 1 is arranged at an air inlet of a preset structure, and the heat dissipation fins 4 are arranged at an air outlet of the preset structure. Airflow for cooling enters the preset structure from the air inlet shell 1 and is discharged from the airflow outlet after heat exchange in the preset structure, and cooling of the preset structure is completed. The heat dissipation fins 4 can increase the gas flow velocity at the gas flow outlet, when the gas flow velocity is high, the pressure of the gas flow is low, and the pressure of the gas flow is smaller than that of the air outlet 14 of the air inlet shell 1, and at the moment, the gas flow entering the preset structure increases the flow velocity under the action of the pressure, so that the cooling effect on the preset structure is further increased.

Airflow inlet is located the bottom of predetermineeing the structure, airflow outlet is located the top of predetermineeing the structure, air inlet casing 1 connect in the bottom of predetermineeing the structure, radiating fin 4 connect in the top of predetermineeing the structure. Because the structural rule of air inlet casing 1, even place the below of predetermineeing the structure, it can not influence the requirement of placing of predetermineeing the structure yet, and the structural strength of fin is not high, and need carry out the air-out by the fin position, sets up the fin and can make the air current discharge predetermine the structure at the top as fast as possible, increases the cooling effect to predetermineeing the structure.

The middle airflow velocity of the preset structure is larger, and the airflow velocities at two ends are smaller, so that the radiating fins 4 are far away from the end face of the preset structure and are in the shape of circular arcs or elliptical arcs or parabolas, and the protruding direction of the radiating fins 4 faces away from one side of the preset structure. The size change of the radiating fins 4 is utilized to match according to the flow velocity of different positions of the airflow outlet, so that the air outlet effect of the airflow outlet is improved. Meanwhile, the circular arc or elliptical arc or parabolic radiating fins 4 can also increase the overall aesthetic degree of the radiating device.

If air outlet is set up at the both ends at the top of predetermineeing the structure, can make the middle part of predetermineeing the structure not have the air current and flow through, the heat concentrates on the middle part of predetermineeing the structure and causes local overheat, can't reach and carry out reliable refrigerated purpose to predetermineeing the structure, consequently, with air outlet setting at the intermediate position of predetermineeing the top of structure.

The middle part of the circular arc or the middle part of the elliptical arc or the middle part of the parabola is positioned at the airflow outlet, so that the uniform heat dissipation effect is realized.

Optionally, the ratio of the length of the circular arc to the radius of the circular arc ranges from 1:1.1 to 1:1.4. the influence of the overlarge maximum size of the arc on the air outlet speed is avoided, and the influence of the undersize maximum size of the arc on the heat dissipation effect of the heat dissipation fins 4 can also be avoided.

Optionally, the angle range of the central angle corresponding to the circular arc is 40 ° to 60 °.

The number of the heat radiating fins 4 is plural, and all the heat radiating fins 4 are arranged in parallel along the width direction of the airflow outlet. The air flow discharged from the air flow outlet can flow out between the heat radiating fins 4.

A battery module comprises the heat dissipation device.

The battery module comprises a shell 5, and all air outlets 14 of the air inlet shell 1 are communicated with the inside of the shell 5. Specifically, the housing 5 is provided with inlets corresponding to the air outlets 14 one to one, and all the inlets form the airflow inlets.

Specifically, the battery module still includes a plurality of battery pack 6, all battery pack 6 is at least one deck and arranges in the shell 5, in same layer, adjacent two form the cooling interval between the battery pack 6, the cooling interval with air outlet 14 one-to-one. The airflow of each air outlet 14 can enter the corresponding cooling space and is finally discharged from the airflow outlet through the heat dissipation fins 4, so that heat dissipation is completed.

When battery pack 6 is arranged in a multilayer manner, a plurality of cooling intervals in each layer are correspondingly communicated, and the airflow of each air outlet 14 can flow along the corresponding cooling intervals, so that heat dissipation of all battery packs 6 is realized.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heat dissipation device is characterized in that: the method comprises the following steps:

the air inlet device comprises an air inlet shell (1), wherein an air inlet (13) and a plurality of air outlets (14) are formed in the air inlet shell (1);

the air inlet casing (1) inside form with air intake (13) and all airflow channel of air outlet (14) intercommunication, and along keeping away from in the direction of air intake (13), airflow channel's flow area reduces gradually.

2. The heat dissipating device of claim 1, wherein: the heat dissipation device comprises a flow guide structure (2), wherein the flow guide structure (2) is arranged in the air inlet shell (1), and the flow guide structure (2) and the inner wall of the air inlet shell (1) form the airflow channel.

3. The heat dissipating device of claim 2, wherein: the air inlet shell (1) is provided with a first side plate (11) and a second side plate (12) which are adjacent to each other, an air inlet (13) is formed in the first side plate (11), a plurality of air outlets (14) are formed in the second side plate (12), and the airflow channel is formed between the diversion structure (2) and the second side plate (12).

4. The heat dissipating device of claim 3, wherein: wind shields (3) are arranged between every two adjacent air outlets (14), the wind shields (3) are arranged in the air flow channel, and wind passing intervals (31) are formed between the wind shields (3) and the flow guide structures (2).

5. The heat dissipating device of claim 4, wherein: the wind shield (3) is arranged at the edge of the air outlet (14) far away from the air inlet (13).

6. The heat dissipating device of claim 4, wherein: all the overfire air spaces (31) are equal.

7. The heat dissipating device of claim 3, wherein: an included angle is formed between the windward side of the flow guide structure (2) and the plane where the second side plate (12) is located, and the included angle ranges from 3 degrees to 5 degrees.

8. The heat dissipating device of claim 1, wherein: and all the air outlets (14) are arranged in parallel along the direction far away from the air inlet (13).

9. The heat dissipating device of claim 1, wherein: and the flow area of the air outlet (14) is gradually increased along the direction far away from the air inlet (13).

10. The heat dissipating device of claim 1, wherein: a preset distance is formed between every two adjacent air outlets (14), and all the preset distances are equal.

11. The heat dissipating device of claim 1, wherein: the heat dissipation device further comprises heat dissipation fins (4), the air inlet shell (1) is arranged at an air inlet of a preset structure, and the heat dissipation fins (4) are arranged at an air outlet of the preset structure.

12. The heat dissipating device of claim 11, wherein: airflow inlet is located the bottom of predetermineeing the structure, airflow outlet is located the top of predetermineeing the structure, air inlet casing (1) connect in the bottom of predetermineeing the structure, radiating fin (4) connect in the top of predetermineeing the structure.

13. The heat dissipating device of claim 11, wherein: the shape of the end face, away from the preset structure, of the radiating fin is an arc, an elliptic arc or a parabola.

14. The heat dissipating device of claim 13, wherein: the middle part of the circular arc or the middle part of the elliptical arc or the middle part of the parabola is positioned at the airflow outlet.

15. The heat dissipating device of claim 13, wherein: the ratio range of the length of the circular arc to the radius of the circular arc is 1:1.1 to 1:1.4.

16. the heat dissipating device of claim 13, wherein: the angle range of the central angle corresponding to the circular arc is 40-60 degrees.

17. The heat dissipating device of claim 11, wherein: the number of the radiating fins (4) is multiple, and all the radiating fins (4) are arranged in parallel along the width direction of the airflow outlet.

18. A battery module, its characterized in that: comprising the heat sink of any one of claims 1 to 17.

19. The battery module according to claim 18, wherein: the battery module comprises a shell (5), and all air outlets (14) of the air inlet shell (1) are communicated with the inside of the shell (5).

20. The battery module according to claim 19, wherein: the battery module further comprises a plurality of battery assemblies (6), wherein all the battery assemblies (6) are arranged in the shell (5) in at least one layer, a cooling interval is formed between every two adjacent battery assemblies (6) in the same layer, and the cooling intervals correspond to the air outlets (14) one to one.