WO2023000842A1

WO2023000842A1 - Battery heat dissipation device and battery device

Info

Publication number: WO2023000842A1
Application number: PCT/CN2022/096939
Authority: WO
Inventors: 韦映竹; 杜智; 黄可贤
Original assignee: 上汽通用五菱汽车股份有限公司
Priority date: 2021-07-21
Filing date: 2022-06-02
Publication date: 2023-01-26
Also published as: CN215869544U

Abstract

The present application provides a battery heat dissipation device and a battery device. The battery heat dissipation device comprises an accommodating box, an air inlet and an air outlet. The accommodating box has a first air duct, a second air duct, and an accommodating chamber for placing a battery. The air inlet is disposed on a side wall of the accommodating box. The air outlet is disposed on a side wall of the accommodating box which is not on the side of the air inlet. One end of the first air duct is in communication with the air inlet, and the other end of the first air duct is connected to the bottom surface of the accommodating chamber. One end of the second air duct is in communication with the air outlet, and the other end of the second air duct is connected to the top surface of the accommodating cavity. An air path penetrating through the first air duct, the accommodating chamber and the second air duct is thus formed.

Description

Battery cooling device and battery device

This application claims the priority of Chinese Patent Application No. 202121667414.1 filed on July 21, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application relates to the technical field of battery cooling, in particular to a battery cooling device and a battery device.

Background technique

As a commonly used thermal management system design for batteries, the air-cooled structure generally has the following advantages: light weight, low cost, simple structure, easy maintenance, and no risk of leakage. However, compared with liquid cooling, the heat exchange coefficient with the battery cell Low, average heat transfer capacity, average heating/cooling efficiency. And in the prior art, the way of using air-cooled structure to dissipate heat is usually the way that the fan blows directly on the battery, which can only dissipate heat on the surface of the battery, and cannot exchange heat with the battery cell or the heat exchange area with the battery cell is small , The heat dissipation efficiency is low, resulting in a large temperature difference between the battery cells and affecting the performance and life of the battery.

technical problem

The main purpose of the present application is to provide a battery cooling device and a battery device, aiming to solve the technical problem of low battery cooling efficiency in the prior art.

technical solution

In order to achieve the above purpose, the present application proposes a battery cooling device, which includes a storage box, an air inlet and an air outlet, and the storage box has a first air duct, a second air duct and an accommodation chamber for placing the battery The air inlet is arranged on the side wall of the storage box; the air outlet is arranged on the side wall of the storage box on the side different from the air inlet; one end of the first air duct It communicates with the air inlet, and the other end is connected with the bottom surface of the accommodating cavity; one end of the second air duct communicates with the air outlet, and the other end is connected with the top surface of the accommodating cavity; to form a An air passage passing through the first air passage, the accommodating cavity and the second air passage.

In one embodiment, the first air channel includes a first air guide part and a second air guide part, the first air guide part is arranged along the side wall of the storage box, and the second air guide part Arranged along the bottom wall of the storage box, the first air guide part communicates with the second air guide part, and the first air guide part and the second air guide part are arranged in an "L" shape .

In one embodiment, the battery cooling device further includes several load-bearing beams, the several load-bearing beams are arranged at intervals in the second air guide part, and the load-bearing beams are provided with several ventilation holes.

In one embodiment, the load-bearing beam is integrally formed with the first air duct.

In one embodiment, the second air channel includes a third air guide part and a fourth air guide part, the third air guide part is arranged along the side wall of the storage box, and the fourth air guide part Arranged along the top wall of the storage box, the third air guide part communicates with the fourth air guide part, and the third air guide part and the fourth air guide part are arranged in an "L" shape .

In one embodiment, the air inlet is opposite to the air outlet.

In one embodiment, foam is provided along the edge of the side wall of the first air channel and/or the second air channel.

In one embodiment, the battery cooling device further includes a fan, and the fan is arranged on the air outlet and communicated with the air outlet.

In one embodiment, the accommodating box includes a casing and a cover, and the cover is set on the casing to form the accommodating cavity.

In addition, in order to solve the above problems, the present application also proposes a battery device, which includes a battery and the above-mentioned battery heat sink, and the battery is arranged in an accommodating chamber of the battery heat sink.

Beneficial effect

The technical solution of the present application improves the air channel structure of the battery cooling device, the air flow is blown into the entire accommodating cavity through the first air channel, and the heated air passes through the top of the accommodating cavity. The second air duct is blown out, and the airflow passes through the entire accommodating cavity, so as to increase the heat dissipation area of the battery and improve the heat dissipation efficiency of the battery heat dissipation device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative effort.

Fig. 1 is a schematic cross-sectional structure diagram of a battery cooling device of the present application;

Fig. 2 is a structural schematic diagram of the battery cooling device of the present application;

FIG. 3 is a structural schematic diagram of a load-bearing beam in a battery cooling device of the present application.

Explanation of reference numbers:

标号 label	名称 name	标号 label	名称 name
10 10	第一风道 The first airway	11 11	第一导风部 The first air guide
12 12	第二导风部 The second air guide	20 20	第二风道 second air duct
21 twenty one	第三导风部 The third air guide	22 twenty two	第四导风部 The fourth air guide
30 30	进风口 Inlet	40 40	出风口 air outlet
50 50	承重梁 Bearing beam	51 51	通风孔 Vents
60 60	风机 fan	70 70	盖体 Cover
80 80	壳体 case	90 90	电池 Battery

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relationship between the components in a certain posture (as shown in the figure). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

In addition, the descriptions involving "first", "second" and so on in the present application are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present application.

This application proposes a battery cooling device, please refer to Figures 1 to 3, the battery cooling device includes a storage box, an air inlet 30 and an air outlet 40, the storage box has a first air duct 10, a second air duct Road 20 and an accommodating cavity for placing the battery; the air inlet 30 is arranged on the side wall of the accommodating box; the air outlet 40 is arranged on the side wall of the accommodating box on the side different from the air inlet 30; the first air duct One end of 10 is communicated with the air inlet 30, and the other end is connected with the bottom surface of the accommodating chamber; one end of the second air duct 20 is communicated with the air outlet 40, and the other end is connected with the top surface of the accommodating chamber; An air passage 10 , the accommodating cavity and the air path of the second air passage 20 . The technical solution of the present application improves the air duct structure of the battery cooling device, and the air flow is blown into the entire accommodation chamber through the first air duct 10, and the heated air is blown out from the top of the accommodation chamber through the second air duct 20, and the air flow It runs through the entire accommodating cavity to increase the heat dissipation area of the battery and improve the heat dissipation efficiency.

Both ends of the first air duct 10 have openings, the first side opening of the first air duct 10 communicates with the air inlet 30 , and the air flow enters the first air duct 10 from the air inlet 30 , The second side opening of the first air duct 10 communicates with the accommodating chamber, and the air flow enters the accommodating chamber through the first air duct 10; wherein, the first air duct 10 The size of the first side opening is the same as that of the air inlet 30 to ensure the air intake of the air inlet 30, and the size of the second side opening of the first air channel 10 is the same as that of the accommodating cavity to ensure that the first side opening The airflow in an air duct 10 can cover and blow through the entire accommodating chamber, increasing the heat dissipation area.

Similarly, the two ends of the second air duct 20 also have openings, and the first side opening of the second air duct 20 communicates with the accommodating cavity, and the air flow takes the heat in the accommodating cavity out to the In the second air passage 20 , the second side opening of the second air passage 20 communicates with the air outlet 40 , and the air flows along the second air passage 20 to transfer the heat in the accommodating cavity from the air outlet. 40 is discharged to the outside of the storage box, so as to achieve the effect of heat dissipation.

The housing box includes a housing 80 and a cover 70, the housing 80 is covered on the housing 80 to form the housing chamber, the housing 80 is surrounded by side walls, and the bottom is the bottom , the cover body 70 is a top wall to enclose the accommodating cavity. The air inlet 30 and the air outlet 40 can be arranged on any different side walls of the storage box. In this embodiment, the air inlet 30 and the air outlet 40 are set opposite to each other as an example. The air inlet 30 is set opposite to the air outlet 40 to ensure the smoothness of the airflow during heat dissipation and prevent the battery cooling device from vibrating when the airflow is large.

The technical solution of the present application improves the air channel structure of the battery cooling device, the air flow is blown into the entire accommodating cavity through the first air channel 10, and the heated air flows from the top of the accommodating cavity Blown out through the second air channel 20 , the air flows through the entire accommodating cavity to increase the heat dissipation area of the battery and improve the heat dissipation efficiency of the battery heat dissipation device.

Specifically, the first air channel 10 includes a first air guide part 11 and a second air guide part 12, the first air guide part 11 is arranged along the side wall of the storage box, and the second air guide part The part 12 is arranged along the bottom wall of the storage box, the first wind guide part 11 communicates with the second wind guide part 12, and the first wind guide part 11 and the second wind guide part 12 Set in an "L" shape. The second air channel 20 includes a third air guide part 21 and a fourth air guide part 22, the third air guide part 21 is arranged along the side wall of the storage box, and the fourth air guide part 22 is arranged along the side wall of the storage box. The top wall of the storage box is provided, the third air guide part 21 communicates with the fourth air guide part 22 , and the third air guide part 21 and the fourth air guide part 22 form an "L" " shape settings. In order to simplify the structure, in this embodiment, the first air duct 10 and the second air duct 20 are arranged close to the inner wall of the accommodating cavity, thereby saving the installation space inside the accommodating box and reducing the The volume of the storage box mentioned above.

When the battery cooling device is placed and used normally, the first air guide part 11 goes downward along the inner wall of the storage box, and then the second air guide part 12 runs along the bottom of the storage box. into the accommodating chamber; the fourth air guide part 22 is arranged on the top of the accommodating box, and the heat in the accommodating chamber is blown into the fourth air guide part 22 along with the airflow Finally, through the third air guiding part 21 , the heat-carrying airflow is discharged out of the air outlet 40 along the inner wall of the storage box. Wherein, please refer to FIG. 1 , the flow direction of the airflow is specifically: enter the first air guide part 11 through the air inlet 30, enter the second air guide part 12 from the first air guide part 11, and enter the second air guide part 12 through the air inlet 30. The second air guide part 12 enters into the accommodating chamber, enters into the fourth air guide part 22 from the accommodating chamber, and enters into the third air guide part 22 from the fourth air guide part 22. The air guide part 21 is finally discharged out of the air outlet 40 through the third air guide part 21 .

It should be noted that the position of the first air duct 10 and the position of the second air duct 20 can be replaced with each other. Since in practice, the density of the air decreases after being heated, the gas flows upwards and gathers at the top of the accommodating cavity, so the second air channel 20 is arranged on the top of the accommodating cavity, so that the air flow can The air is discharged from the second air channel 20 to the outside of the air outlet 40 faster to improve heat dissipation efficiency.

Specifically, the battery heat dissipation device further includes several load-bearing beams 50 arranged at intervals in the second air guiding portion 12 , and a plurality of ventilation holes 51 are provided on the load-bearing beams 50 . In order to ensure the overall rigidity of the battery cooling device, and the mass of the battery structure is large, in order to avoid damage to the first air duct 10 at the bottom of the battery structure after a long period of use, the load beam 50 is set to place The battery structure improves the stability of the battery cooling device. It should be noted that, in order to ensure the circulation of airflow, ventilation holes 51 are provided on the bearing beam 50 to facilitate the flow of airflow and avoid the blockage of the first air duct 10 .

The load-bearing beam 50 and the first air duct 10 are integrally formed. Since the first air duct 10 is located at the bottom of the storage box, the load-bearing beam 50 and the first air duct 10 are set to increase the rigidity in the first air duct 10 and avoid deformation.

Further, foam is provided along the edge of the side wall of the first air channel 10 and/or the second air channel 20 . The foam surrounds the inner wall of the first air channel 10 , and is between the first air channel 10 and the air inlet 30 and between the second air channel 20 and the air outlet 40 Foam is arranged between them, and the flexible and light-weight characteristics of the foam are used to reduce the sound wave vibration generated by the air flow during the flow and reduce the noise.

Further, the battery cooling device further includes a fan 60 , the fan 60 is arranged on the air outlet 40 and communicates with the air outlet 40 . It should be noted that the fan 60 can also be arranged at the position of the air inlet 30 , and the flow of the airflow will be accelerated under the action of the fan 60 , thereby further improving the heat dissipation efficiency of the battery cooling device described in this application.

In addition, in order to solve the above problems, the present application also proposes a battery device, the battery device includes a battery 90 and the above-mentioned battery heat sink, and the battery 90 is disposed in the accommodating chamber of the battery heat sink. Both ends of the first air duct 10 have openings, the first side opening of the first air duct 10 communicates with the air inlet 30 , and the air flow enters the first air duct 10 from the air inlet 30 , The second side opening of the first air duct 10 communicates with the accommodating chamber, and the air flow enters the accommodating chamber through the first air duct 10; wherein, the first air duct 10 The size of the first side opening is the same as that of the air inlet 30 to ensure the air intake of the air inlet 30, and the size of the second side opening of the first air channel 10 is the same as that of the accommodating cavity to ensure that the first side opening The airflow in an air duct 10 can cover and blow through the entire accommodating chamber, increasing the heat dissipation area.

The storage box includes a housing 80 and a cover 70. The cover 70 is covered on the housing 80 to form the storage cavity. The surroundings of the housing 80 are side walls, and the bottom is the bottom. , the cover body 70 is a top wall to enclose the accommodating cavity. The air inlet 30 and the air outlet 40 can be arranged on any different side walls of the storage box. In this embodiment, the air inlet 30 and the air outlet 40 are set opposite to each other as an example. The air inlet 30 is set opposite to the air outlet 40 to ensure the smoothness of the airflow during heat dissipation and prevent the battery cooling device from vibrating when the airflow is large.

The above are only optional embodiments of the application, and are not therefore limiting the patent scope of the application. Under the utility model concept of the application, the equivalent structural transformation made by using the description of the application and the contents of the accompanying drawings, or directly/ Indirect application in other relevant technical fields is included in the patent protection scope of the present application.

Claims

A battery cooling device, wherein the battery cooling device includes:

A storage box, the storage box has a first air duct, a second air duct and an accommodation cavity for placing the battery;

an air inlet, the air inlet is arranged on the side wall of the storage box;

an air outlet, the air outlet is arranged on the side wall of the storage box that is different from the side wall of the air inlet;

Wherein, one end of the first air passage communicates with the air inlet, and the other end connects with the bottom surface of the accommodating chamber; one end of the second air passage communicates with the air outlet, and the other end communicates with the accommodating chamber. The top surface of the cavity is connected; to form an air path passing through the first air channel, the accommodating cavity and the second air channel.
The battery cooling device according to claim 1, wherein the first air channel includes a first air guide part and a second air guide part, the first air guide part is arranged along the side wall of the storage box, The second air guide part is arranged along the bottom wall of the storage box, the first air guide part communicates with the second air guide part, and the first air guide part communicates with the second air guide part The part is arranged in an "L" shape.
The battery heat dissipation device according to claim 2, wherein the battery heat dissipation device further comprises several load-bearing beams, the several load-bearing beams are arranged at intervals in the second air guide part, and the load-bearing beams are provided with several ventilation holes .
The battery cooling device according to claim 3, wherein the load-bearing beam is integrated with the first air duct.
The battery cooling device according to claim 1, wherein the second air passage includes a third air guide part and a fourth air guide part, the third air guide part is arranged along the side wall of the storage box, The fourth air guide part is arranged along the top wall of the storage box, the third air guide part communicates with the fourth air guide part, and the third air guide part communicates with the fourth air guide part. The part is arranged in an "L" shape.
The battery cooling device according to claim 1, wherein the air inlet is opposite to the air outlet.
The battery cooling device according to claim 1, wherein foam is provided along the edge of the side wall of the first air channel and/or the second air channel.
The battery cooling device according to claim 1, wherein the battery cooling device further comprises a fan, and the fan is arranged on the air outlet and communicates with the air outlet.
The battery cooling device according to claim 1, wherein the accommodating box comprises a casing and a cover, and the cover is covered on the casing to form the accommodating cavity.
A battery device, wherein the battery device includes a battery and the battery cooling device according to any one of claims 1 to 9, and the battery is arranged in the accommodating cavity of the battery cooling device.